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< / style >
< / head >
< body >
< pre style = "font-family:monospace;font-size:12pt" >
< a name = "l1" > < / a > < span class = cF0 >
< a name = "l2" > < / a > < / span > < span class = cF1 > U0< / span > < span class = cF0 > TCPGlobalsInit()
< a name = "l3" > < / a > {
< a name = "l4" > < / a > tcp_globals.bound_socket_tree = < / span > < span class = cF3 > NULL< / span > < span class = cF0 > ;
< a name = "l5" > < / a > tcp_globals.next_source_port = < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
< a name = "l6" > < / a > }
< a name = "l7" > < / a >
< a name = "l8" > < / a > < / span > < span class = cF1 > Bool< / span > < span class = cF0 > IsTCPStateSync(CTCPSocket *tcp_socket)
< a name = "l9" > < / a > {
< a name = "l10" > < / a > < / span > < span class = cF1 > switch< / span > < span class = cF0 > (tcp_socket-> state)
< a name = "l11" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l12" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > TCP_STATE_ESTABLISHED:
< a name = "l13" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > TCP_STATE_FIN_WAIT1:
< a name = "l14" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > TCP_STATE_FIN_WAIT2:
< a name = "l15" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > TCP_STATE_CLOSE_WAIT:
< a name = "l16" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > TCP_STATE_CLOSING:
< a name = "l17" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > TCP_STATE_LAST_ACK:
< a name = "l18" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > TCP_STATE_TIME_WAIT:
< a name = "l19" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > < / span > < span class = cF3 > TRUE< / span > < span class = cF0 > ;
< a name = "l20" > < / a > < / span > < span class = cF1 > default< / span > < span class = cF0 > :
< a name = "l21" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > < / span > < span class = cF3 > FALSE< / span > < span class = cF0 > ;
< a name = "l22" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l23" > < / a > }
< a name = "l24" > < / a >
< a name = "l25" > < / a > < / span > < span class = cF2 > // TODO: Merge IPV4Checksum, TCPChecksumPartial, and TCPChecksumFinal into 1.< / span > < span class = cF0 >
< a name = "l26" > < / a > < / span > < span class = cF2 > //< / span > < span class = cF0 > < / span > < span class = cF2 > All use same alg.< / span > < span class = cF0 >
< a name = "l27" > < / a > < / span > < span class = cF9 > U16< / span > < span class = cF0 > TCPChecksumPartial(< / span > < span class = cF9 > U32< / span > < span class = cF0 > sum, < / span > < span class = cF1 > U8< / span > < span class = cF0 > *header, < / span > < span class = cF9 > I64< / span > < span class = cF0 > length)
< a name = "l28" > < / a > { < / span > < span class = cF2 > // same algorithm as IPV4Checksum, except sum is arg. First half.< / span > < span class = cF0 >
< a name = "l29" > < / a > < / span > < span class = cF2 > //todo. make names clearer, and better comments.< / span > < span class = cF0 >
< a name = "l30" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > nleft = length;
< a name = "l31" > < / a > < / span > < span class = cF9 > U16< / span > < span class = cF0 > *w = header;
< a name = "l32" > < / a >
< a name = "l33" > < / a > < / span > < span class = cF1 > while< / span > < span class = cF0 > (nleft > < / span > < span class = cFE > 1< / span > < span class = cF0 > )
< a name = "l34" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l35" > < / a > sum += *w++;
< a name = "l36" > < / a > nleft -= < / span > < span class = cFE > 2< / span > < span class = cF0 > ;
< a name = "l37" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l38" > < / a >
< a name = "l39" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > sum;
< a name = "l40" > < / a > }
< a name = "l41" > < / a >
< a name = "l42" > < / a > < / span > < span class = cF9 > U16< / span > < span class = cF0 > TCPChecksumFinal(< / span > < span class = cF9 > U32< / span > < span class = cF0 > sum, < / span > < span class = cF1 > U8< / span > < span class = cF0 > *header, < / span > < span class = cF9 > I64< / span > < span class = cF0 > length)
< a name = "l43" > < / a > { < / span > < span class = cF2 > // same algorithm as IPV4Checksum, except sum is arg. Both halves.< / span > < span class = cF0 >
< a name = "l44" > < / a > < / span > < span class = cF2 > //todo. make names clearer, and better comments.< / span > < span class = cF0 >
< a name = "l45" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > nleft = length;
< a name = "l46" > < / a > < / span > < span class = cF9 > U16< / span > < span class = cF0 > *w = header;
< a name = "l47" > < / a >
< a name = "l48" > < / a > < / span > < span class = cF1 > while< / span > < span class = cF0 > (nleft > < / span > < span class = cFE > 1< / span > < span class = cF0 > )
< a name = "l49" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l50" > < / a > sum += *w++;
< a name = "l51" > < / a > nleft -= < / span > < span class = cFE > 2< / span > < span class = cF0 > ;
< a name = "l52" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l53" > < / a >
< a name = "l54" > < / a > < / span > < span class = cF2 > // " mop up an odd byte, if necessary" < / span > < span class = cF0 >
< a name = "l55" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (nleft == < / span > < span class = cFE > 1< / span > < span class = cF0 > )
< a name = "l56" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l57" > < / a > sum += *w & < / span > < span class = cFE > 0x00FF< / span > < span class = cF0 > ;
< a name = "l58" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l59" > < / a >
< a name = "l60" > < / a > < / span > < span class = cF2 > // " add back carry outs from top 16 bits to low 16 bits" < / span > < span class = cF0 >
< a name = "l61" > < / a > sum = sum > > < / span > < span class = cFE > 16< / span > < span class = cF0 > + sum & < / span > < span class = cFE > 0xFFFF< / span > < span class = cF0 > ; < / span > < span class = cF2 > // " add hi 16 to low 16" < / span > < span class = cF0 >
< a name = "l62" > < / a > sum += sum > > < / span > < span class = cFE > 16< / span > < span class = cF0 > ; < / span > < span class = cF2 > // add carry< / span > < span class = cF0 >
< a name = "l63" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > ~sum & < / span > < span class = cFE > 0xFFFF< / span > < span class = cF0 > ;
< a name = "l64" > < / a >
< a name = "l65" > < / a > }
< a name = "l66" > < / a >
< a name = "l67" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > TCPPacketAllocate(< / span > < span class = cF1 > U8< / span > < span class = cF0 > **frame_out,
< a name = "l68" > < / a > < / span > < span class = cF9 > U32< / span > < span class = cF0 > source_ip,
< a name = "l69" > < / a > < / span > < span class = cF9 > U16< / span > < span class = cF0 > source_port,
< a name = "l70" > < / a > < / span > < span class = cF9 > U32< / span > < span class = cF0 > destination_ip,
< a name = "l71" > < / a > < / span > < span class = cF9 > U16< / span > < span class = cF0 > destination_port,
< a name = "l72" > < / a > < / span > < span class = cF9 > U32< / span > < span class = cF0 > seq_num,
< a name = "l73" > < / a > < / span > < span class = cF9 > U32< / span > < span class = cF0 > ack_num,
< a name = "l74" > < / a > < / span > < span class = cF1 > U8< / span > < span class = cF0 > flags,
< a name = "l75" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > length)
< a name = "l76" > < / a > {
< a name = "l77" > < / a > < / span > < span class = cF1 > U8< / span > < span class = cF0 > *tcp_frame;
< a name = "l78" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > de_index;
< a name = "l79" > < / a > CTCPHeader *header;
< a name = "l80" > < / a >
< a name = "l81" > < / a > de_index = IPV4PacketAllocate(& tcp_frame,
< a name = "l82" > < / a > IP_PROTOCOL_TCP,
< a name = "l83" > < / a > source_ip,
< a name = "l84" > < / a > destination_ip,
< a name = "l85" > < / a > < / span > < span class = cF1 > sizeof< / span > < span class = cF7 > (< / span > < span class = cF0 > CTCPHeader< / span > < span class = cF7 > )< / span > < span class = cF0 > + length);
< a name = "l86" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (de_index < < / span > < span class = cFE > 0< / span > < span class = cF0 > )
< a name = "l87" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l88" > < / a > NetLog(< / span > < span class = cF6 > " TCP PACKET ALLOCATE: Ethernet Frame Allocate failed." < / span > < span class = cF0 > );
< a name = "l89" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > de_index;
< a name = "l90" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l91" > < / a >
< a name = "l92" > < / a > header = tcp_frame;
< a name = "l93" > < / a >
< a name = "l94" > < / a > header-> source_port = < / span > < span class = cF5 > EndianU16< / span > < span class = cF0 > (source_port);
< a name = "l95" > < / a > header-> destination_port = < / span > < span class = cF5 > EndianU16< / span > < span class = cF0 > (destination_port);
< a name = "l96" > < / a >
< a name = "l97" > < / a > NetDebug(< / span > < span class = cF6 > " TCP PACKET ALLOCATE: Outputting header port src/dest 0x%0X/0x%0X:" < / span > < span class = cF0 > ,
< a name = "l98" > < / a > header-> source_port, header-> destination_port);
< a name = "l99" > < / a >
< a name = "l100" > < / a > header-> seq_num = < / span > < span class = cF5 > EndianU32< / span > < span class = cF0 > (seq_num);
< a name = "l101" > < / a > header-> ack_num = < / span > < span class = cF5 > EndianU32< / span > < span class = cF0 > (ack_num);
< a name = "l102" > < / a > header-> data_offset = (< / span > < span class = cF1 > sizeof< / span > < span class = cF7 > (< / span > < span class = cF0 > CTCPHeader< / span > < span class = cF7 > )< / span > < span class = cF0 > / < / span > < span class = cFE > 4< / span > < span class = cF0 > ) < < < / span > < span class = cFE > 4< / span > < span class = cF0 > ; < / span > < span class = cF2 > // ???< / span > < span class = cF0 >
< a name = "l103" > < / a > header-> flags = flags;
< a name = "l104" > < / a > header-> window_size = < / span > < span class = cF5 > EndianU16< / span > < span class = cF0 > (TCP_WINDOW_SIZE / < / span > < span class = cFE > 2< / span > < span class = cF0 > );< / span > < span class = cF2 > // TODO: What is window size supposed to be ?< / span > < span class = cF0 >
< a name = "l105" > < / a > header-> checksum = < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
< a name = "l106" > < / a > header-> urgent_pointer = < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
< a name = "l107" > < / a >
< a name = "l108" > < / a > *frame_out = tcp_frame + < / span > < span class = cF1 > sizeof< / span > < span class = cF0 > (CTCPHeader);
< a name = "l109" > < / a >
< a name = "l110" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > de_index;
< a name = "l111" > < / a > }
< a name = "l112" > < / a >
< a name = "l113" > < / a > < / span > < span class = cF1 > U0< / span > < span class = cF0 > TCPPacketFinish(< / span > < span class = cF9 > I64< / span > < span class = cF0 > de_index,
< a name = "l114" > < / a > < / span > < span class = cF9 > U32< / span > < span class = cF0 > source_ip,
< a name = "l115" > < / a > < / span > < span class = cF9 > U32< / span > < span class = cF0 > destination_ip,
< a name = "l116" > < / a > < / span > < span class = cF1 > U8< / span > < span class = cF0 > *frame,
< a name = "l117" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > length,
< a name = "l118" > < / a > CTCPAckQueue **send_buffer_out=< / span > < span class = cF3 > NULL< / span > < span class = cF0 > )
< a name = "l119" > < / a > {
< a name = "l120" > < / a > CTCPHeader *header = frame - < / span > < span class = cF1 > sizeof< / span > < span class = cF0 > (CTCPHeader);
< a name = "l121" > < / a > CTCPPseudoHeader *pseudoheader = < / span > < span class = cF5 > CAlloc< / span > < span class = cF0 > (< / span > < span class = cF1 > sizeof< / span > < span class = cF7 > (< / span > < span class = cF0 > CTCPPseudoHeader< / span > < span class = cF7 > )< / span > < span class = cF0 > );
< a name = "l122" > < / a > < / span > < span class = cF9 > U32< / span > < span class = cF0 > checksum;
< a name = "l123" > < / a > CTCPAckQueue *send_buffer;
< a name = "l124" > < / a >
< a name = "l125" > < / a > pseudoheader-> source_address = < / span > < span class = cF5 > EndianU32< / span > < span class = cF0 > (source_ip);
< a name = "l126" > < / a > pseudoheader-> destination_address = < / span > < span class = cF5 > EndianU32< / span > < span class = cF0 > (destination_ip);
< a name = "l127" > < / a > pseudoheader-> zeros = < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
< a name = "l128" > < / a > pseudoheader-> protocol = IP_PROTOCOL_TCP;
< a name = "l129" > < / a > pseudoheader-> tcp_length = < / span > < span class = cF5 > EndianU16< / span > < span class = cF0 > (< / span > < span class = cF1 > sizeof< / span > < span class = cF7 > (< / span > < span class = cF0 > CTCPHeader< / span > < span class = cF7 > )< / span > < span class = cF0 > + length);
< a name = "l130" > < / a >
< a name = "l131" > < / a > checksum = TCPChecksumPartial(< / span > < span class = cFE > 0< / span > < span class = cF0 > , pseudoheader, < / span > < span class = cF1 > sizeof< / span > < span class = cF7 > (< / span > < span class = cF0 > CTCPPseudoHeader< / span > < span class = cF7 > )< / span > < span class = cF0 > );
< a name = "l132" > < / a > header-> checksum = TCPChecksumFinal(checksum, header, < / span > < span class = cF1 > sizeof< / span > < span class = cF7 > (< / span > < span class = cF0 > CTCPHeader< / span > < span class = cF7 > )< / span > < span class = cF0 > + length);
< a name = "l133" > < / a >
< a name = "l134" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (send_buffer_out)
< a name = "l135" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l136" > < / a > send_buffer = < / span > < span class = cF5 > CAlloc< / span > < span class = cF0 > (< / span > < span class = cF1 > sizeof< / span > < span class = cF7 > (< / span > < span class = cF0 > CTCPAckQueue< / span > < span class = cF7 > )< / span > < span class = cF0 > );
< a name = "l137" > < / a >
< a name = "l138" > < / a > send_buffer-> time_sent = < / span > < span class = cF5 > tS< / span > < span class = cF0 > ;
< a name = "l139" > < / a > send_buffer-> retries = < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
< a name = "l140" > < / a > send_buffer-> start_seq_num = < / span > < span class = cF5 > EndianU32< / span > < span class = cF0 > (header-> seq_num);
< a name = "l141" > < / a > send_buffer-> end_seq_num = < / span > < span class = cFE > 0< / span > < span class = cF0 > ; < / span > < span class = cF2 > // must set this upstream< / span > < span class = cF0 >
< a name = "l142" > < / a > send_buffer-> tcp_packet_size = length;
< a name = "l143" > < / a > send_buffer-> tcp_packet = < / span > < span class = cF5 > CAlloc< / span > < span class = cF0 > (< / span > < span class = cF1 > sizeof< / span > < span class = cF7 > (< / span > < span class = cF0 > CTCPHeader< / span > < span class = cF7 > )< / span > < span class = cF0 > + length);
< a name = "l144" > < / a >
< a name = "l145" > < / a > < / span > < span class = cF5 > MemCopy< / span > < span class = cF0 > (send_buffer-> tcp_packet, frame, < / span > < span class = cF1 > sizeof< / span > < span class = cF7 > (< / span > < span class = cF0 > CTCPHeader< / span > < span class = cF7 > )< / span > < span class = cF0 > + length);
< a name = "l146" > < / a >
< a name = "l147" > < / a > *send_buffer_out = send_buffer; < / span > < span class = cF2 > // set output param as new send buffer< / span > < span class = cF0 >
< a name = "l148" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l149" > < / a >
< a name = "l150" > < / a > IPV4PacketFinish(de_index);
< a name = "l151" > < / a > }
< a name = "l152" > < / a >
< a name = "l153" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > TCPSend(< / span > < span class = cF9 > U32< / span > < span class = cF0 > source_ip,
< a name = "l154" > < / a > < / span > < span class = cF9 > U16< / span > < span class = cF0 > source_port,
< a name = "l155" > < / a > < / span > < span class = cF9 > U32< / span > < span class = cF0 > destination_ip,
< a name = "l156" > < / a > < / span > < span class = cF9 > U16< / span > < span class = cF0 > destination_port,
< a name = "l157" > < / a > < / span > < span class = cF9 > U32< / span > < span class = cF0 > seq_num,
< a name = "l158" > < / a > < / span > < span class = cF9 > U32< / span > < span class = cF0 > ack_num,
< a name = "l159" > < / a > < / span > < span class = cF1 > U8< / span > < span class = cF0 > flags)
< a name = "l160" > < / a > { < / span > < span class = cF2 > // send raw unsocketed TCP packet, flags and/or data. Does not store into ACK Queue (Send Buffer).< / span > < span class = cF0 >
< a name = "l161" > < / a >
< a name = "l162" > < / a > < / span > < span class = cF1 > U8< / span > < span class = cF0 > *payload_frame;
< a name = "l163" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > de_index = TCPPacketAllocate(& payload_frame,
< a name = "l164" > < / a > source_ip,
< a name = "l165" > < / a > source_port,
< a name = "l166" > < / a > destination_ip,
< a name = "l167" > < / a > destination_port,
< a name = "l168" > < / a > seq_num,
< a name = "l169" > < / a > ack_num,
< a name = "l170" > < / a > flags,
< a name = "l171" > < / a > < / span > < span class = cFE > 0< / span > < span class = cF0 > );
< a name = "l172" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (de_index < < / span > < span class = cFE > 0< / span > < span class = cF0 > )
< a name = "l173" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l174" > < / a > NetErr(< / span > < span class = cF6 > " TCP SEND: TCP Packet Allocate failed." < / span > < span class = cF0 > );
< a name = "l175" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > de_index;
< a name = "l176" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l177" > < / a >
< a name = "l178" > < / a > TCPPacketFinish(de_index, source_ip, destination_ip, payload_frame, < / span > < span class = cFE > 0< / span > < span class = cF0 > , < / span > < span class = cF3 > NULL< / span > < span class = cF0 > );
< a name = "l179" > < / a >
< a name = "l180" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
< a name = "l181" > < / a > }
< a name = "l182" > < / a >
< a name = "l183" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > TCPSendFlags(CTCPSocket *tcp_socket, < / span > < span class = cF1 > U8< / span > < span class = cF0 > flags)
< a name = "l184" > < / a > { < / span > < span class = cF2 > // send TCP packet, flags only. Stores into ACK Queue (Send Buffer) if flags SYN or FIN.< / span > < span class = cF0 >
< a name = "l185" > < / a >
< a name = "l186" > < / a > < / span > < span class = cF1 > U8< / span > < span class = cF0 > *payload_frame;
< a name = "l187" > < / a > CSocketAddressStorage *dest = & tcp_socket-> destination_address;
< a name = "l188" > < / a > CSocketAddressStorage *source = & tcp_socket-> source_address;
< a name = "l189" > < / a > CSocketAddressIPV4 *dest_ipv4;
< a name = "l190" > < / a > CSocketAddressIPV6 *dest_ipv6;
< a name = "l191" > < / a > CSocketAddressIPV4 *source_ipv4;
< a name = "l192" > < / a > CSocketAddressIPV6 *source_ipv6;
< a name = "l193" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > de_index;
< a name = "l194" > < / a > CTCPAckQueue *send_buffer = < / span > < span class = cF3 > NULL< / span > < span class = cF0 > ;
< a name = "l195" > < / a > CTCPAckQueue **send_buffer_ptr = < / span > < span class = cF3 > NULL< / span > < span class = cF0 > ;
< a name = "l196" > < / a >
< a name = "l197" > < / a > NetDebug(< / span > < span class = cF6 > " TCP SEND FLAGS: Attempting Send using param TCP socket" < / span > < span class = cF0 > );
< a name = "l198" > < / a >
< a name = "l199" > < / a > < / span > < span class = cF1 > switch< / span > < span class = cF0 > (dest-> family)
< a name = "l200" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l201" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_INET:
< a name = "l202" > < / a > dest_ipv4 = dest;
< a name = "l203" > < / a >
< a name = "l204" > < / a > < / span > < span class = cF1 > switch< / span > < span class = cF0 > (source-> family)
< a name = "l205" > < / a > {
< a name = "l206" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_INET:
< a name = "l207" > < / a > source_ipv4 = source;
< a name = "l208" > < / a >
< a name = "l209" > < / a > NetDebug(< / span > < span class = cF6 > " TCP SEND FLAGS: Trying TCP Packet Allocate... port src/dest 0x%0X/0x%0X" < / span > < span class = cF0 > ,
< a name = "l210" > < / a > source_ipv4-> port, dest_ipv4-> port);
< a name = "l211" > < / a >
< a name = "l212" > < / a > de_index = TCPPacketAllocate(& payload_frame,
< a name = "l213" > < / a > source_ipv4-> address.address,
< a name = "l214" > < / a > < / span > < span class = cF5 > EndianU16< / span > < span class = cF7 > (< / span > < span class = cF0 > source_ipv4-> port< / span > < span class = cF7 > )< / span > < span class = cF0 > ,
< a name = "l215" > < / a > dest_ipv4-> address.address,
< a name = "l216" > < / a > < / span > < span class = cF5 > EndianU16< / span > < span class = cF7 > (< / span > < span class = cF0 > dest_ipv4-> port< / span > < span class = cF7 > )< / span > < span class = cF0 > ,
< a name = "l217" > < / a > tcp_socket-> next_send_seq_num,
< a name = "l218" > < / a > tcp_socket-> next_recv_seq_num,
< a name = "l219" > < / a > flags,
< a name = "l220" > < / a > < / span > < span class = cFE > 0< / span > < span class = cF0 > );
< a name = "l221" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (de_index < < / span > < span class = cFE > 0< / span > < span class = cF0 > )
< a name = "l222" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l223" > < / a > NetErr(< / span > < span class = cF6 > " TCP SEND FLAGS: TCP Packet Allocate failed." < / span > < span class = cF0 > );
< a name = "l224" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > de_index;
< a name = "l225" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l226" > < / a >
< a name = "l227" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
< a name = "l228" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_INET6:
< a name = "l229" > < / a > source_ipv6 = source;
< a name = "l230" > < / a > NetErr(< / span > < span class = cF6 > " TCP SEND FLAGS: FIXME, IPV6 not implemented yet" < / span > < span class = cF0 > );
< a name = "l231" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l232" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_UNSPEC:
< a name = "l233" > < / a > NetErr(< / span > < span class = cF6 > " TCP SEND FLAGS: Error, TCP Send from AF_UNSPEC\n" < / span > < span class = cF0 > );
< a name = "l234" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l235" > < / a > }
< a name = "l236" > < / a >
< a name = "l237" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
< a name = "l238" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_INET6:
< a name = "l239" > < / a > dest_ipv6 = dest;
< a name = "l240" > < / a > NetErr(< / span > < span class = cF6 > " TCP SEND FLAGS: FIXME, IPV6 not implemented yet" < / span > < span class = cF0 > );
< a name = "l241" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l242" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_UNSPEC:
< a name = "l243" > < / a > NetErr(< / span > < span class = cF6 > " TCP SEND FLAGS: Error, TCP Send to AF_UNSPEC\n" < / span > < span class = cF0 > );
< a name = "l244" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l245" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l246" > < / a >
< a name = "l247" > < / a > < / span > < span class = cF2 > // at this point, a TCP packet has been allocated.< / span > < span class = cF0 >
< a name = "l248" > < / a > < / span > < span class = cF2 > // TODO: Is there a better way to manage links across different address types?< / span > < span class = cF0 >
< a name = "l249" > < / a >
< a name = "l250" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (< / span > < span class = cF5 > Bt< / span > < span class = cF7 > (< / span > < span class = cF0 > & flags, TCPf_SYN< / span > < span class = cF7 > )< / span > < span class = cF0 > )
< a name = "l251" > < / a > tcp_socket-> next_send_seq_num++;
< a name = "l252" > < / a >
< a name = "l253" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (< / span > < span class = cF5 > Bt< / span > < span class = cF7 > (< / span > < span class = cF0 > & flags, TCPf_FIN< / span > < span class = cF7 > )< / span > < span class = cF0 > )
< a name = "l254" > < / a > tcp_socket-> next_send_seq_num++;
< a name = "l255" > < / a >
< a name = "l256" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (< / span > < span class = cF5 > Bt< / span > < span class = cF7 > (< / span > < span class = cF0 > & flags, TCPf_FIN< / span > < span class = cF7 > )< / span > < span class = cF0 > || < / span > < span class = cF5 > Bt< / span > < span class = cF7 > (< / span > < span class = cF0 > & flags, TCPf_SYN< / span > < span class = cF7 > )< / span > < span class = cF0 > )
< a name = "l257" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l258" > < / a > send_buffer_ptr = & send_buffer;
< a name = "l259" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l260" > < / a >
< a name = "l261" > < / a >
< a name = "l262" > < / a > < / span > < span class = cF1 > switch< / span > < span class = cF0 > (dest-> family)
< a name = "l263" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l264" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_INET:
< a name = "l265" > < / a > dest_ipv4 = dest;
< a name = "l266" > < / a >
< a name = "l267" > < / a > < / span > < span class = cF1 > switch< / span > < span class = cF0 > (source-> family)
< a name = "l268" > < / a > {
< a name = "l269" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_INET:
< a name = "l270" > < / a > source_ipv4 = source;
< a name = "l271" > < / a >
< a name = "l272" > < / a > TCPPacketFinish(de_index,
< a name = "l273" > < / a > source_ipv4-> address.address,
< a name = "l274" > < / a > dest_ipv4-> address.address,
< a name = "l275" > < / a > payload_frame,
< a name = "l276" > < / a > < / span > < span class = cFE > 0< / span > < span class = cF0 > ,
< a name = "l277" > < / a > send_buffer_ptr);
< a name = "l278" > < / a >
< a name = "l279" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (send_buffer)
< a name = "l280" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 > < / span > < span class = cF2 > // modifying ptr should affect our send_buffer variable< / span > < span class = cF0 >
< a name = "l281" > < / a > send_buffer-> end_seq_num = tcp_socket-> next_send_seq_num;
< a name = "l282" > < / a >
< a name = "l283" > < / a > < / span > < span class = cF2 > // append it to the socket, ACK Queue needs to be ready (head)...< / span > < span class = cF0 >
< a name = "l284" > < / a > < / span > < span class = cF5 > QueueInsertRev< / span > < span class = cF0 > (send_buffer, tcp_socket-> ack_queue);
< a name = "l285" > < / a >
< a name = "l286" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l287" > < / a >
< a name = "l288" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
< a name = "l289" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_INET6:
< a name = "l290" > < / a > source_ipv6 = source;
< a name = "l291" > < / a > NetErr(< / span > < span class = cF6 > " TCP SEND FLAGS: FIXME, IPV6 not implemented yet" < / span > < span class = cF0 > );
< a name = "l292" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l293" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_UNSPEC:
< a name = "l294" > < / a > NetErr(< / span > < span class = cF6 > " TCP SEND FLAGS: Error, TCP Send from AF_UNSPEC\n" < / span > < span class = cF0 > );
< a name = "l295" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l296" > < / a > }
< a name = "l297" > < / a >
< a name = "l298" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
< a name = "l299" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_INET6:
< a name = "l300" > < / a > dest_ipv6 = dest;
< a name = "l301" > < / a > NetErr(< / span > < span class = cF6 > " TCP SEND FLAGS: FIXME, IPV6 not implemented yet" < / span > < span class = cF0 > );
< a name = "l302" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l303" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_UNSPEC:
< a name = "l304" > < / a > NetErr(< / span > < span class = cF6 > " TCP SEND FLAGS: Error, TCP Send to AF_UNSPEC\n" < / span > < span class = cF0 > );
< a name = "l305" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l306" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l307" > < / a > }
< a name = "l308" > < / a >
< a name = "l309" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > TCPSendData(CTCPSocket *tcp_socket, < / span > < span class = cF1 > U8< / span > < span class = cF0 > flags, < / span > < span class = cF1 > U8< / span > < span class = cF0 > *data, < / span > < span class = cF9 > I64< / span > < span class = cF0 > length)
< a name = "l310" > < / a > { < / span > < span class = cF2 > // send TCP packet, flags and data. Stores into ACK Queue (Send Buffer).< / span > < span class = cF0 >
< a name = "l311" > < / a >
< a name = "l312" > < / a > < / span > < span class = cF1 > U8< / span > < span class = cF0 > *payload_frame;
< a name = "l313" > < / a > CSocketAddressStorage *dest = & tcp_socket-> destination_address;
< a name = "l314" > < / a > CSocketAddressStorage *source = & tcp_socket-> source_address;
< a name = "l315" > < / a > CSocketAddressIPV4 *dest_ipv4;
< a name = "l316" > < / a > CSocketAddressIPV6 *dest_ipv6;
< a name = "l317" > < / a > CSocketAddressIPV4 *source_ipv4;
< a name = "l318" > < / a > CSocketAddressIPV6 *source_ipv6;
< a name = "l319" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > de_index;
< a name = "l320" > < / a > CTCPAckQueue *send_buffer;
< a name = "l321" > < / a >
< a name = "l322" > < / a > NetDebug(< / span > < span class = cF6 > " TCP SEND DATA: Attempting Send using param TCP socket" < / span > < span class = cF0 > );
< a name = "l323" > < / a >
< a name = "l324" > < / a > < / span > < span class = cF1 > switch< / span > < span class = cF0 > (dest-> family)
< a name = "l325" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l326" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_INET:
< a name = "l327" > < / a > dest_ipv4 = dest;
< a name = "l328" > < / a >
< a name = "l329" > < / a > < / span > < span class = cF1 > switch< / span > < span class = cF0 > (source-> family)
< a name = "l330" > < / a > {
< a name = "l331" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_INET:
< a name = "l332" > < / a > source_ipv4 = source;
< a name = "l333" > < / a >
< a name = "l334" > < / a > NetDebug(< / span > < span class = cF6 > " TCP SEND DATA: Trying TCP Packet Allocate... port src/dest 0x%0X/0x%0X" < / span > < span class = cF0 > ,
< a name = "l335" > < / a > source_ipv4-> port, dest_ipv4-> port);
< a name = "l336" > < / a >
< a name = "l337" > < / a > de_index = TCPPacketAllocate(& payload_frame,
< a name = "l338" > < / a > source_ipv4-> address.address,
< a name = "l339" > < / a > < / span > < span class = cF5 > EndianU16< / span > < span class = cF7 > (< / span > < span class = cF0 > source_ipv4-> port< / span > < span class = cF7 > )< / span > < span class = cF0 > ,
< a name = "l340" > < / a > dest_ipv4-> address.address,
< a name = "l341" > < / a > < / span > < span class = cF5 > EndianU16< / span > < span class = cF7 > (< / span > < span class = cF0 > dest_ipv4-> port< / span > < span class = cF7 > )< / span > < span class = cF0 > ,
< a name = "l342" > < / a > tcp_socket-> next_send_seq_num,
< a name = "l343" > < / a > tcp_socket-> next_recv_seq_num,
< a name = "l344" > < / a > flags,
< a name = "l345" > < / a > length);
< a name = "l346" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (de_index < < / span > < span class = cFE > 0< / span > < span class = cF0 > )
< a name = "l347" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l348" > < / a > NetLog(< / span > < span class = cF6 > " TCP SEND DATA: TCP Packet Allocate failed." < / span > < span class = cF0 > );
< a name = "l349" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > de_index;
< a name = "l350" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l351" > < / a >
< a name = "l352" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
< a name = "l353" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_INET6:
< a name = "l354" > < / a > source_ipv6 = source;
< a name = "l355" > < / a > NetErr(< / span > < span class = cF6 > " TCP SEND DATA: FIXME, IPV6 not implemented yet" < / span > < span class = cF0 > );
< a name = "l356" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l357" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_UNSPEC:
< a name = "l358" > < / a > NetErr(< / span > < span class = cF6 > " TCP SEND DATA: Error, TCP Send from AF_UNSPEC\n" < / span > < span class = cF0 > );
< a name = "l359" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l360" > < / a > }
< a name = "l361" > < / a >
< a name = "l362" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
< a name = "l363" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_INET6:
< a name = "l364" > < / a > dest_ipv6 = dest;
< a name = "l365" > < / a > NetErr(< / span > < span class = cF6 > " TCP SEND DATA: FIXME, IPV6 not implemented yet" < / span > < span class = cF0 > );
< a name = "l366" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l367" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_UNSPEC:
< a name = "l368" > < / a > NetErr(< / span > < span class = cF6 > " TCP SEND DATA: Error, TCP Send to AF_UNSPEC\n" < / span > < span class = cF0 > );
< a name = "l369" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l370" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l371" > < / a >
< a name = "l372" > < / a > < / span > < span class = cF2 > // at this point, a TCP packet has been allocated.< / span > < span class = cF0 >
< a name = "l373" > < / a > < / span > < span class = cF2 > // TODO: Is there a better way to manage links across different address types?< / span > < span class = cF0 >
< a name = "l374" > < / a >
< a name = "l375" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (length)
< a name = "l376" > < / a > < / span > < span class = cF5 > MemCopy< / span > < span class = cF0 > (payload_frame, data, length);
< a name = "l377" > < / a >
< a name = "l378" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (< / span > < span class = cF5 > Bt< / span > < span class = cF7 > (< / span > < span class = cF0 > & flags, TCPf_SYN< / span > < span class = cF7 > )< / span > < span class = cF0 > )
< a name = "l379" > < / a > tcp_socket-> next_send_seq_num++;
< a name = "l380" > < / a >
< a name = "l381" > < / a > tcp_socket-> next_send_seq_num += length;
< a name = "l382" > < / a >
< a name = "l383" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (< / span > < span class = cF5 > Bt< / span > < span class = cF7 > (< / span > < span class = cF0 > & flags, TCPf_FIN< / span > < span class = cF7 > )< / span > < span class = cF0 > )
< a name = "l384" > < / a > tcp_socket-> next_send_seq_num++;
< a name = "l385" > < / a >
< a name = "l386" > < / a > < / span > < span class = cF1 > switch< / span > < span class = cF0 > (dest-> family)
< a name = "l387" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l388" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_INET:
< a name = "l389" > < / a > dest_ipv4 = dest;
< a name = "l390" > < / a >
< a name = "l391" > < / a > < / span > < span class = cF1 > switch< / span > < span class = cF0 > (source-> family)
< a name = "l392" > < / a > {
< a name = "l393" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_INET:
< a name = "l394" > < / a > source_ipv4 = source;
< a name = "l395" > < / a >
< a name = "l396" > < / a > TCPPacketFinish(de_index,
< a name = "l397" > < / a > source_ipv4-> address.address,
< a name = "l398" > < / a > dest_ipv4-> address.address,
< a name = "l399" > < / a > payload_frame,
< a name = "l400" > < / a > length,
< a name = "l401" > < / a > & send_buffer);
< a name = "l402" > < / a >
< a name = "l403" > < / a > send_buffer-> end_seq_num = tcp_socket-> next_send_seq_num;
< a name = "l404" > < / a >
< a name = "l405" > < / a > < / span > < span class = cF2 > // append it to the socket, ACK Queue needs to be ready (head)...< / span > < span class = cF0 >
< a name = "l406" > < / a > < / span > < span class = cF5 > QueueInsertRev< / span > < span class = cF0 > (send_buffer, tcp_socket-> ack_queue);
< a name = "l407" > < / a >
< a name = "l408" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
< a name = "l409" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_INET6:
< a name = "l410" > < / a > source_ipv6 = source;
< a name = "l411" > < / a > NetErr(< / span > < span class = cF6 > " TCP SEND DATA: FIXME, IPV6 not implemented yet" < / span > < span class = cF0 > );
< a name = "l412" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l413" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_UNSPEC:
< a name = "l414" > < / a > NetErr(< / span > < span class = cF6 > " TCP SEND DATA: Error, TCP Send from AF_UNSPEC\n" < / span > < span class = cF0 > );
< a name = "l415" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l416" > < / a > }
< a name = "l417" > < / a >
< a name = "l418" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
< a name = "l419" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_INET6:
< a name = "l420" > < / a > dest_ipv6 = dest;
< a name = "l421" > < / a > NetErr(< / span > < span class = cF6 > " TCP SEND DATA: FIXME, IPV6 not implemented yet" < / span > < span class = cF0 > );
< a name = "l422" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l423" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_UNSPEC:
< a name = "l424" > < / a > NetErr(< / span > < span class = cF6 > " TCP SEND DATA: Error, TCP Send to AF_UNSPEC\n" < / span > < span class = cF0 > );
< a name = "l425" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l426" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l427" > < / a > }
< a name = "l428" > < / a >
< a name = "l429" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > TCPPacketParse(CTCPHeader **header_out,
< a name = "l430" > < / a > < / span > < span class = cF1 > U8< / span > < span class = cF0 > **data_out,
< a name = "l431" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > *length_out,
< a name = "l432" > < / a > CIPV4Packet *packet)
< a name = "l433" > < / a > {
< a name = "l434" > < / a > CTCPHeader *header = packet-> data;
< a name = "l435" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > header_length = (header-> data_offset > > < / span > < span class = cFE > 4< / span > < span class = cF0 > ) * < / span > < span class = cFE > 4< / span > < span class = cF0 > ; < / span > < span class = cF2 > // ?? why< / span > < span class = cF0 >
< a name = "l436" > < / a > < / span > < span class = cF2 > //< / span > < span class = cF0 > < / span > < span class = cF2 > U32< / span > < span class = cF0 > < / span > < span class = cF2 > checksum, sum;< / span > < span class = cF0 >
< a name = "l437" > < / a > < / span > < span class = cF2 > //< / span > < span class = cF0 > < / span > < span class = cF2 > CTCPPseudoHeader *pseudoheader< / span > < span class = cF0 > < / span > < span class = cF2 > = CAlloc(sizeof(CTCPPseudoHeader));< / span > < span class = cF0 >
< a name = "l438" > < / a >
< a name = "l439" > < / a > < / span > < span class = cF2 > // TODO: Validate packet-> length !< / span > < span class = cF0 >
< a name = "l440" > < / a >
< a name = "l441" > < / a > < / span > < span class = cF2 > // Verify Checksum:< / span > < span class = cF0 >
< a name = "l442" > < / a > < / span > < span class = cF2 > /*< / span > < span class = cF0 > < / span > < span class = cF2 > NetWarn(" DEBUG: TCPPACKETPARSE:< / span > < span class = cF0 > < / span > < span class = cF2 > 0x%X = checksum from packet, verifying..." , EndianU16(header-> checksum));< / span > < span class = cF0 >
< a name = "l443" > < / a > < / span > < span class = cF2 > pseudoheader-> source_address< / span > < span class = cF0 > < / span > < span class = cF2 > = EndianU32(packet-> source_ip_address);< / span > < span class = cF0 >
< a name = "l444" > < / a > < / span > < span class = cF2 > pseudoheader-> destination_address< / span > < span class = cF0 > < / span > < span class = cF2 > = EndianU32(packet-> destination_ip_address);< / span > < span class = cF0 >
< a name = "l445" > < / a > < / span > < span class = cF2 > pseudoheader-> zeros< / span > < span class = cF0 > < / span > < span class = cF2 > = 0;< / span > < span class = cF0 >
< a name = "l446" > < / a > < / span > < span class = cF2 > pseudoheader-> protocol< / span > < span class = cF0 > < / span > < span class = cF2 > = IP_PROTOCOL_TCP;< / span > < span class = cF0 >
< a name = "l447" > < / a > < / span > < span class = cF2 > pseudoheader-> tcp_length< / span > < span class = cF0 > < / span > < span class = cF2 > = EndianU16(packet-> length);< / span > < span class = cF0 >
< a name = "l448" > < / a >
< a name = "l449" > < / a > < / span > < span class = cF2 > checksum = TCPChecksumPartial(0, pseudoheader, sizeof(CTCPPseudoHeader));< / span > < span class = cF0 >
< a name = "l450" > < / a > < / span > < span class = cF2 > NetWarn(" DEBUG: TCPPACKETPARSE:< / span > < span class = cF0 > < / span > < span class = cF2 > 0x%X = partial checksum" , checksum);< / span > < span class = cF0 >
< a name = "l451" > < / a >
< a name = "l452" > < / a > < / span > < span class = cF2 > Free(pseudoheader); // No longer needed, discard< / span > < span class = cF0 >
< a name = "l453" > < / a >
< a name = "l454" > < / a > < / span > < span class = cF2 > sum = TCPChecksumFinal(checksum, header, packet-> length);< / span > < span class = cF0 >
< a name = "l455" > < / a >
< a name = "l456" > < / a > < / span > < span class = cF2 > if (sum != EndianU16(header-> checksum))< / span > < span class = cF0 >
< a name = "l457" > < / a > < / span > < span class = cF2 > {< / span > < span class = cF0 >
< a name = "l458" > < / a > < / span > < span class = cF2 > NetErr(" DEBUG: TCPPACKETPARSE:< / span > < span class = cF0 > < / span > < span class = cF2 > 0x%X = NOT MATCH" , sum);< / span > < span class = cF0 >
< a name = "l459" > < / a > < / span > < span class = cF2 > //return -1; // is checksum not being 0 in received header going to mess this up?..< / span > < span class = cF0 >
< a name = "l460" > < / a > < / span > < span class = cF2 > }< / span > < span class = cF0 >
< a name = "l461" > < / a > < / span > < span class = cF2 > // Checksum verified.< / span > < span class = cF0 >
< a name = "l462" > < / a > < / span > < span class = cF2 > */< / span > < span class = cF0 >
< a name = "l463" > < / a >
< a name = "l464" > < / a > *header_out = header;
< a name = "l465" > < / a > *data_out = packet-> data + header_length;
< a name = "l466" > < / a > *length_out = packet-> length - header_length;
< a name = "l467" > < / a >
< a name = "l468" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
< a name = "l469" > < / a > }
< a name = "l470" > < / a >
< a name = "l471" > < / a > < / span > < span class = cF1 > U0< / span > < span class = cF0 > TCPAcknowledgePacket(CTCPSocket *tcp_socket, < / span > < span class = cF9 > U32< / span > < span class = cF0 > segment_ack)
< a name = "l472" > < / a > {
< a name = "l473" > < / a > < / span > < span class = cF1 > F64< / span > < span class = cF0 > time = < / span > < span class = cF5 > tS< / span > < span class = cF0 > ;
< a name = "l474" > < / a > < / span > < span class = cF1 > F64< / span > < span class = cF0 > rtt;
< a name = "l475" > < / a > CTCPAckQueue *send_buffer = tcp_socket-> ack_queue-> next;
< a name = "l476" > < / a > CTCPAckQueue *send_buffer_temp;
< a name = "l477" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > segment_ack_relative;
< a name = "l478" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > send_next_relative;
< a name = "l479" > < / a >
< a name = "l480" > < / a > NetDebug(< / span > < span class = cF6 > " TCP ACKNOWLEDGE PACKET: Looking to see if there are any send buffers" < / span > < span class = cF0 > );
< a name = "l481" > < / a >
< a name = "l482" > < / a > < / span > < span class = cF1 > while< / span > < span class = cF0 > (send_buffer != tcp_socket-> ack_queue)
< a name = "l483" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l484" > < / a > segment_ack_relative = (segment_ack - send_buffer-> end_seq_num) & < / span > < span class = cFE > 0xFFFFFFFF< / span > < span class = cF0 > ;
< a name = "l485" > < / a > send_next_relative = (tcp_socket-> next_send_seq_num - send_buffer-> end_seq_num) & < / span > < span class = cFE > 0xFFFFFFFF< / span > < span class = cF0 > ;
< a name = "l486" > < / a > < / span > < span class = cF2 > // ???< / span > < span class = cF0 >
< a name = "l487" > < / a >
< a name = "l488" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (segment_ack_relative < = send_next_relative)
< a name = "l489" > < / a > {
< a name = "l490" > < / a > NetDebug(< / span > < span class = cF6 > " TCP ACKNOWLEDGE PACKET: Saw send buffer entry with ACK < = next relative send ACK, removing." < / span > < span class = cF0 > );
< a name = "l491" > < / a > rtt = time - send_buffer-> time_sent; < / span > < span class = cF2 > // Round-Trip Time< / span > < span class = cF0 >
< a name = "l492" > < / a >
< a name = "l493" > < / a > tcp_socket-> srtt = (tcp_socket-> srtt * TCP_SRTT_ALPHA) + (< / span > < span class = cF7 > (< / span > < span class = cFE > 1< / span > < span class = cF0 > .< / span > < span class = cFE > 0< / span > < span class = cF0 > - TCP_SRTT_ALPHA< / span > < span class = cF7 > )< / span > < span class = cF0 > * rtt);
< a name = "l494" > < / a > < / span > < span class = cF2 > // Smoothed Round-Trip Time< / span > < span class = cF0 >
< a name = "l495" > < / a >
< a name = "l496" > < / a > < / span > < span class = cF5 > QueueRemove< / span > < span class = cF0 > (send_buffer);
< a name = "l497" > < / a > < / span > < span class = cF5 > Free< / span > < span class = cF0 > (send_buffer-> tcp_packet);
< a name = "l498" > < / a >
< a name = "l499" > < / a > send_buffer_temp = send_buffer-> next; < / span > < span class = cF2 > // QueueRemove doesn't change removed queue's links< / span > < span class = cF0 >
< a name = "l500" > < / a > < / span > < span class = cF5 > Free< / span > < span class = cF0 > (send_buffer);
< a name = "l501" > < / a >
< a name = "l502" > < / a > send_buffer = send_buffer_temp;
< a name = "l503" > < / a >
< a name = "l504" > < / a > }
< a name = "l505" > < / a > < / span > < span class = cF1 > else< / span > < span class = cF0 >
< a name = "l506" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
< a name = "l507" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l508" > < / a > }
< a name = "l509" > < / a >
< a name = "l510" > < / a > < / span > < span class = cF1 > U0< / span > < span class = cF0 > TCPCheckACKQueue(CTCPSocket *tcp_socket)
< a name = "l511" > < / a > {
< a name = "l512" > < / a > < / span > < span class = cF1 > F64< / span > < span class = cF0 > time = < / span > < span class = cF5 > tS< / span > < span class = cF0 > ;
< a name = "l513" > < / a > < / span > < span class = cF1 > F64< / span > < span class = cF0 > rto = TCP_RTO_BETA * tcp_socket-> srtt; < / span > < span class = cF2 > // Retransmission Timeout, Smoothed Round-Trip Time< / span > < span class = cF0 >
< a name = "l514" > < / a > CTCPAckQueue *send_buffer = tcp_socket-> ack_queue-> next;
< a name = "l515" > < / a > CTCPAckQueue *first_buffer = send_buffer;
< a name = "l516" > < / a > < / span > < span class = cF1 > U8< / span > < span class = cF0 > *tcp_frame;
< a name = "l517" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > de_index;
< a name = "l518" > < / a > CSocketAddressStorage *dest = & tcp_socket-> destination_address;
< a name = "l519" > < / a > CSocketAddressStorage *source = & tcp_socket-> source_address;
< a name = "l520" > < / a > CSocketAddressIPV4 *dest_ipv4;
< a name = "l521" > < / a > CSocketAddressIPV6 *dest_ipv6;
< a name = "l522" > < / a > CSocketAddressIPV4 *source_ipv4;
< a name = "l523" > < / a > CSocketAddressIPV6 *source_ipv6;
< a name = "l524" > < / a >
< a name = "l525" > < / a >
< a name = "l526" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (send_buffer == tcp_socket-> ack_queue)
< a name = "l527" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l528" > < / a > < / span > < span class = cF2 > //< / span > < span class = cF0 > < / span > < span class = cF2 > NetWarn(" TCP CHECK ACK QUEUE: ACK Queue empty, bailing early." );< / span > < span class = cF0 >
< a name = "l529" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > ;
< a name = "l530" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l531" > < / a >
< a name = "l532" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (rto < TCP_RTO_MIN)
< a name = "l533" > < / a > rto = TCP_RTO_MIN;
< a name = "l534" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (rto < TCP_RTO_MAX)
< a name = "l535" > < / a > rto = TCP_RTO_MAX;
< a name = "l536" > < / a >
< a name = "l537" > < / a > < / span > < span class = cF1 > do< / span > < span class = cF0 >
< a name = "l538" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l539" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (time > send_buffer-> time_sent + rto)
< a name = "l540" > < / a > {
< a name = "l541" > < / a > NetWarn(< / span > < span class = cF6 > " TCP CHECK ACK QUEUE: Retransmitting TCP packet in ACK Queue." < / span > < span class = cF0 > );
< a name = "l542" > < / a >
< a name = "l543" > < / a > < / span > < span class = cF1 > switch< / span > < span class = cF0 > (dest-> family)
< a name = "l544" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l545" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_INET:
< a name = "l546" > < / a > dest_ipv4 = dest;
< a name = "l547" > < / a >
< a name = "l548" > < / a > < / span > < span class = cF1 > switch< / span > < span class = cF0 > (source-> family)
< a name = "l549" > < / a > {
< a name = "l550" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_INET:
< a name = "l551" > < / a > source_ipv4 = source;
< a name = "l552" > < / a >
< a name = "l553" > < / a > de_index = IPV4PacketAllocate(& tcp_frame,
< a name = "l554" > < / a > IP_PROTOCOL_TCP,
< a name = "l555" > < / a > source_ipv4-> address.address,
< a name = "l556" > < / a > dest_ipv4-> address.address,
< a name = "l557" > < / a > send_buffer-> tcp_packet_size);
< a name = "l558" > < / a >
< a name = "l559" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (de_index < < / span > < span class = cFE > 0< / span > < span class = cF0 > )
< a name = "l560" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l561" > < / a > NetErr(< / span > < span class = cF6 > " TCP CHECK ACK QUEUE: IPV4 Packet Allocate failed." < / span > < span class = cF0 > );
< a name = "l562" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > ;< / span > < span class = cF2 > // de_index;< / span > < span class = cF0 >
< a name = "l563" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l564" > < / a >
< a name = "l565" > < / a > < / span > < span class = cF5 > MemCopy< / span > < span class = cF0 > (& tcp_frame, send_buffer-> tcp_packet, send_buffer-> tcp_packet_size);
< a name = "l566" > < / a >
< a name = "l567" > < / a > IPV4PacketFinish(de_index);
< a name = "l568" > < / a >
< a name = "l569" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
< a name = "l570" > < / a >
< a name = "l571" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_INET6:
< a name = "l572" > < / a > source_ipv6 = source;
< a name = "l573" > < / a > NetErr(< / span > < span class = cF6 > " TCP CHECK ACK QUEUE: FIXME, IPV6 not implemented yet" < / span > < span class = cF0 > );
< a name = "l574" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > ;< / span > < span class = cF2 > // -1;< / span > < span class = cF0 >
< a name = "l575" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_UNSPEC:
< a name = "l576" > < / a > NetErr(< / span > < span class = cF6 > " TCP CHECK ACK QUEUE: Error, TCP Send from AF_UNSPEC\n" < / span > < span class = cF0 > );
< a name = "l577" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > ;< / span > < span class = cF2 > // -1;< / span > < span class = cF0 >
< a name = "l578" > < / a > }
< a name = "l579" > < / a >
< a name = "l580" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
< a name = "l581" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_INET6:
< a name = "l582" > < / a > dest_ipv6 = dest;
< a name = "l583" > < / a > NetErr(< / span > < span class = cF6 > " TCP CHECK ACK QUEUE: FIXME, IPV6 not implemented yet" < / span > < span class = cF0 > );
< a name = "l584" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > ;< / span > < span class = cF2 > // -1;< / span > < span class = cF0 >
< a name = "l585" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_UNSPEC:
< a name = "l586" > < / a > NetErr(< / span > < span class = cF6 > " TCP CHECK ACK QUEUE: Error, TCP Send to AF_UNSPEC\n" < / span > < span class = cF0 > );
< a name = "l587" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > ;< / span > < span class = cF2 > // -1;< / span > < span class = cF0 >
< a name = "l588" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l589" > < / a >
< a name = "l590" > < / a > send_buffer-> time_sent = < / span > < span class = cF5 > tS< / span > < span class = cF0 > ;
< a name = "l591" > < / a >
< a name = "l592" > < / a > < / span > < span class = cF2 > // If it gets here, retransmit was successful.< / span > < span class = cF0 >
< a name = "l593" > < / a >
< a name = "l594" > < / a > < / span > < span class = cF2 > // Move to the END OF THE CHAIN (BACK OF THE QUEUE. SO, REQUEUE.)< / span > < span class = cF0 >
< a name = "l595" > < / a > < / span > < span class = cF5 > QueueRemove< / span > < span class = cF0 > (send_buffer);
< a name = "l596" > < / a > < / span > < span class = cF5 > QueueInsertRev< / span > < span class = cF0 > (send_buffer, tcp_socket-> ack_queue);
< a name = "l597" > < / a >
< a name = "l598" > < / a > send_buffer = tcp_socket-> ack_queue-> next;
< a name = "l599" > < / a >
< a name = "l600" > < / a > }
< a name = "l601" > < / a > < / span > < span class = cF1 > else< / span > < span class = cF0 >
< a name = "l602" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
< a name = "l603" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l604" > < / a > < / span > < span class = cF1 > while< / span > < span class = cF0 > (send_buffer != first_buffer);
< a name = "l605" > < / a > }
< a name = "l606" > < / a >
< a name = "l607" > < / a > CTCPSocket TCPSocket(< / span > < span class = cF9 > U16< / span > < span class = cF0 > domain=AF_UNSPEC)
< a name = "l608" > < / a > {
< a name = "l609" > < / a > < / span > < span class = cF9 > U16< / span > < span class = cF0 > type = SOCKET_STREAM;
< a name = "l610" > < / a > CTCPSocket *tcp_socket = < / span > < span class = cF5 > CAlloc< / span > < span class = cF0 > (< / span > < span class = cF1 > sizeof< / span > < span class = cF7 > (< / span > < span class = cF0 > CTCPSocket< / span > < span class = cF7 > )< / span > < span class = cF0 > );
< a name = "l611" > < / a > CTCPAckQueue *ack_queue = < / span > < span class = cF5 > CAlloc< / span > < span class = cF0 > (< / span > < span class = cF1 > sizeof< / span > < span class = cF7 > (< / span > < span class = cF0 > CTCPAckQueue< / span > < span class = cF7 > )< / span > < span class = cF0 > );
< a name = "l612" > < / a > CTCPAcceptQueue *accept_queue = < / span > < span class = cF5 > CAlloc< / span > < span class = cF0 > (< / span > < span class = cF1 > sizeof< / span > < span class = cF7 > (< / span > < span class = cF0 > CTCPAcceptQueue< / span > < span class = cF7 > )< / span > < span class = cF0 > );
< a name = "l613" > < / a > CSocketAddressIPV4 *ipv4_address;
< a name = "l614" > < / a > CSocketAddressIPV6 *ipv6_address;
< a name = "l615" > < / a >
< a name = "l616" > < / a > tcp_socket-> socket = Socket(domain, type);
< a name = "l617" > < / a > tcp_socket-> state = TCP_STATE_CLOSED;
< a name = "l618" > < / a >
< a name = "l619" > < / a > tcp_socket-> source_address.family = domain; < / span > < span class = cF2 > // INET, INET6, or unspecified< / span > < span class = cF0 >
< a name = "l620" > < / a >
< a name = "l621" > < / a > < / span > < span class = cF1 > switch< / span > < span class = cF0 > (domain)
< a name = "l622" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l623" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_INET:
< a name = "l624" > < / a > ipv4_address = & tcp_socket-> source_address;
< a name = "l625" > < / a >
< a name = "l626" > < / a > ipv4_address-> address.address = IPV4AddressGet;
< a name = "l627" > < / a > < / span > < span class = cF2 > // do we need to set local port? does that only make sense to do later?< / span > < span class = cF0 >
< a name = "l628" > < / a > < / span > < span class = cF2 > // CAlloc will leave it at 0< / span > < span class = cF0 >
< a name = "l629" > < / a >
< a name = "l630" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
< a name = "l631" > < / a >
< a name = "l632" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_INET6:
< a name = "l633" > < / a > ipv6_address = & tcp_socket-> source_address;
< a name = "l634" > < / a > NetErr(< / span > < span class = cF6 > " TCP SOCKET: FIXME, IPV6 not implemented yet" < / span > < span class = cF0 > );
< a name = "l635" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > < / span > < span class = cF3 > NULL< / span > < span class = cF0 > ;
< a name = "l636" > < / a >
< a name = "l637" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_UNSPEC:
< a name = "l638" > < / a > NetErr(< / span > < span class = cF6 > " TCP SOCKET: Error TCP Socket to AF_UNSPEC" < / span > < span class = cF0 > );
< a name = "l639" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > < / span > < span class = cF3 > NULL< / span > < span class = cF0 > ;
< a name = "l640" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l641" > < / a >
< a name = "l642" > < / a > < / span > < span class = cF5 > QueueInit< / span > < span class = cF0 > (ack_queue); < / span > < span class = cF2 > // init send buffer queue head< / span > < span class = cF0 >
< a name = "l643" > < / a > tcp_socket-> ack_queue = ack_queue;
< a name = "l644" > < / a >
< a name = "l645" > < / a > < / span > < span class = cF5 > QueueInit< / span > < span class = cF0 > (accept_queue); < / span > < span class = cF2 > // init pending connection queue< / span > < span class = cF0 >
< a name = "l646" > < / a > tcp_socket-> accept_queue = accept_queue;
< a name = "l647" > < / a >
< a name = "l648" > < / a > tcp_socket-> receive_buffer_size = TCP_WINDOW_SIZE;
< a name = "l649" > < / a > tcp_socket-> receive_buffer = < / span > < span class = cF5 > CAlloc< / span > < span class = cF0 > (TCP_WINDOW_SIZE);
< a name = "l650" > < / a >
< a name = "l651" > < / a > tcp_socket-> max_segment_size = TCP_MSS;
< a name = "l652" > < / a >
< a name = "l653" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > tcp_socket;
< a name = "l654" > < / a > }
< a name = "l655" > < / a >
< a name = "l656" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > TCPSocketBind(CTCPSocket *tcp_socket, CSocketAddressStorage *address)
< a name = "l657" > < / a > { < / span > < span class = cF2 > // Binds a TCP socket to address, which contains the local port and remote address to use.< / span > < span class = cF0 >
< a name = "l658" > < / a > CTCPTreeNode *head = tcp_globals.bound_socket_tree;
< a name = "l659" > < / a > CTCPTreeNode *temp_node;
< a name = "l660" > < / a > CSocketAddressIPV4 *ipv4_address;
< a name = "l661" > < / a > CSocketAddressIPV4 *ipv4_destination;
< a name = "l662" > < / a > CSocketAddressIPV4 *ipv4_source;
< a name = "l663" > < / a > CSocketAddressIPV6 *ipv6_address;
< a name = "l664" > < / a > CSocketAddressIPV6 *ipv6_destination;
< a name = "l665" > < / a > < / span > < span class = cF9 > U16< / span > < span class = cF0 > port;
< a name = "l666" > < / a >
< a name = "l667" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (!SocketBind< / span > < span class = cF7 > (< / span > < span class = cF0 > tcp_socket-> socket< / span > < span class = cF7 > )< / span > < span class = cF0 > )
< a name = "l668" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l669" > < / a > NetErr(< / span > < span class = cF6 > " TCP SOCKET BIND: Failed, Socket state-machine must be in READY state." < / span > < span class = cF0 > );
< a name = "l670" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l671" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l672" > < / a >
< a name = "l673" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (tcp_socket-> state != TCP_STATE_CLOSED)
< a name = "l674" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l675" > < / a > NetErr(< / span > < span class = cF6 > " TCP SOCKET BIND: Failed, TCP Socket must be in CLOSED state." < / span > < span class = cF0 > );
< a name = "l676" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l677" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l678" > < / a >
< a name = "l679" > < / a > < / span > < span class = cF1 > switch< / span > < span class = cF0 > (address-> family)
< a name = "l680" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l681" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_INET:
< a name = "l682" > < / a >
< a name = "l683" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (tcp_socket-> source_address.family == AF_INET6)
< a name = "l684" > < / a > {
< a name = "l685" > < / a > NetErr(< / span > < span class = cF6 > " TCP SOCKET BIND: FIXME, IPV6-> IPV4 TCP BIND" < / span > < span class = cF0 > );
< a name = "l686" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l687" > < / a > }
< a name = "l688" > < / a >
< a name = "l689" > < / a > ipv4_address = address;
< a name = "l690" > < / a > ipv4_destination = & tcp_socket-> destination_address;
< a name = "l691" > < / a >
< a name = "l692" > < / a > ipv4_destination-> family = AF_INET;
< a name = "l693" > < / a > ipv4_destination-> address.address = ipv4_address-> address.address; < / span > < span class = cF2 > // bind socket to address in parameter.< / span > < span class = cF0 >
< a name = "l694" > < / a > < / span > < span class = cF2 > //< / span > < span class = cF0 > < / span > < span class = cF2 > ipv4_destination-> port< / span > < span class = cF0 > < / span > < span class = cF2 > = ipv4_address-> port; // ... consistency would say keep in Big Endian ...< / span > < span class = cF0 >
< a name = "l695" > < / a >
< a name = "l696" > < / a > ipv4_source = & tcp_socket-> source_address;
< a name = "l697" > < / a >
< a name = "l698" > < / a > ipv4_source-> port = ipv4_address-> port;
< a name = "l699" > < / a >
< a name = "l700" > < / a > port = < / span > < span class = cF5 > EndianU16< / span > < span class = cF0 > (ipv4_address-> port); < / span > < span class = cF2 > // port member should be Big Endian, so now we're going L.E (?)< / span > < span class = cF0 >
< a name = "l701" > < / a >
< a name = "l702" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
< a name = "l703" > < / a >
< a name = "l704" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_INET6:
< a name = "l705" > < / a >
< a name = "l706" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (tcp_socket-> source_address.family == AF_INET)
< a name = "l707" > < / a > {
< a name = "l708" > < / a > NetErr(< / span > < span class = cF6 > " TCP SOCKET BIND: Incompatible Address type." < / span > < span class = cF0 > );
< a name = "l709" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l710" > < / a > }
< a name = "l711" > < / a >
< a name = "l712" > < / a > ipv6_address = address;
< a name = "l713" > < / a > ipv6_destination = & tcp_socket-> destination_address;
< a name = "l714" > < / a > < / span > < span class = cF2 > // ...< / span > < span class = cF0 >
< a name = "l715" > < / a > < / span > < span class = cF2 > // ...< / span > < span class = cF0 >
< a name = "l716" > < / a >
< a name = "l717" > < / a > port = < / span > < span class = cF5 > EndianU16< / span > < span class = cF0 > (ipv6_address-> port); < / span > < span class = cF2 > // port member should be Big Endian, so now we're going L.E (?)< / span > < span class = cF0 >
< a name = "l718" > < / a >
< a name = "l719" > < / a > NetErr(< / span > < span class = cF6 > " TCP SOCKET BIND: FIXME, IPV6 TCP BIND" < / span > < span class = cF0 > );
< a name = "l720" > < / a >
< a name = "l721" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
< a name = "l722" > < / a >
< a name = "l723" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_UNSPEC:
< a name = "l724" > < / a > NetErr(< / span > < span class = cF6 > " TCP SOCKET BIND: Error, AF_UNSPEC TCP BIND -- param family" < / span > < span class = cF0 > );
< a name = "l725" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
< a name = "l726" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l727" > < / a >
< a name = "l728" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (head)
< a name = "l729" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l730" > < / a > < / span > < span class = cF2 > // look for our port.< / span > < span class = cF0 >
< a name = "l731" > < / a > temp_node = TCPTreeNodeFind(port, head);
< a name = "l732" > < / a >
< a name = "l733" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (temp_node)
< a name = "l734" > < / a > { < / span > < span class = cF2 > // if we find we have bound sockets at port, check address before adding to queue< / span > < span class = cF0 >
< a name = "l735" > < / a > < / span > < span class = cF1 > switch< / span > < span class = cF0 > (address-> family)
< a name = "l736" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l737" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_INET:
< a name = "l738" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (TCPTreeNodeQueueIPV4Find< / span > < span class = cF7 > (< / span > < span class = cF0 > ipv4_destination-> address.address, temp_node, < / span > < span class = cF3 > TRUE< / span > < span class = cF7 > )< / span > < span class = cF0 > )
< a name = "l739" > < / a > {
< a name = "l740" > < / a > NetErr(< / span > < span class = cF6 > " TCP SOCKET BIND: Address already in Bound Socket Tree !" < / span > < span class = cF0 > );
< a name = "l741" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l742" > < / a > }
< a name = "l743" > < / a > < / span > < span class = cF1 > else< / span > < span class = cF0 >
< a name = "l744" > < / a > { < / span > < span class = cF2 > // if no address match, free to add socket to the node queue< / span > < span class = cF0 >
< a name = "l745" > < / a > NetDebug(< / span > < span class = cF6 > " TCP SOCKET BIND: No address match, adding socket to node queue" < / span > < span class = cF0 > );
< a name = "l746" > < / a > TCPTreeNodeQueueAdd(tcp_socket, temp_node);
< a name = "l747" > < / a > }
< a name = "l748" > < / a >
< a name = "l749" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
< a name = "l750" > < / a >
< a name = "l751" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_INET6:
< a name = "l752" > < / a > NetErr(< / span > < span class = cF6 > " TCP SOCKET BIND: FIXME, IPV6 TCP BIND" < / span > < span class = cF0 > );
< a name = "l753" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
< a name = "l754" > < / a >
< a name = "l755" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_UNSPEC:
< a name = "l756" > < / a > NetErr(< / span > < span class = cF6 > " TCP SOCKET BIND: Error, AF_UNSPEC TCP BIND -- found in bound tree" < / span > < span class = cF0 > );
< a name = "l757" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
< a name = "l758" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l759" > < / a > }
< a name = "l760" > < / a > < / span > < span class = cF1 > else< / span > < span class = cF0 >
< a name = "l761" > < / a > { < / span > < span class = cF2 > // if we get no node back from port search, we didn't find it and are free to add a new node.< / span > < span class = cF0 >
< a name = "l762" > < / a > temp_node = TCPTreeNodeParamAdd(port, head); < / span > < span class = cF2 > // add new node with port, return its *.< / span > < span class = cF0 >
< a name = "l763" > < / a > TCPTreeNodeQueueAdd(tcp_socket, temp_node);
< a name = "l764" > < / a > }
< a name = "l765" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l766" > < / a > < / span > < span class = cF1 > else< / span > < span class = cF0 > < / span > < span class = cF2 > // if no bound sockets, we init the tree as a new node< / span > < span class = cF0 >
< a name = "l767" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l768" > < / a > tcp_globals.bound_socket_tree = head = TCPTreeNodeParamInit(port); < / span > < span class = cF2 > //... shouuuld be in L.E .. ?< / span > < span class = cF0 >
< a name = "l769" > < / a > TCPTreeNodeQueueAdd(tcp_socket, head); < / span > < span class = cF2 > // add the tcp socket to the port queue< / span > < span class = cF0 >
< a name = "l770" > < / a > < / span > < span class = cF2 > // maybe more checks to do before this, dunno rn.< / span > < span class = cF0 >
< a name = "l771" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l772" > < / a >
< a name = "l773" > < / a >
< a name = "l774" > < / a > < / span > < span class = cF2 > // do we need to do anything else after bind add to tree? ...< / span > < span class = cF0 >
< a name = "l775" > < / a >
< a name = "l776" > < / a >
< a name = "l777" > < / a > < / span > < span class = cF1 > switch< / span > < span class = cF0 > (tcp_socket-> socket-> state)
< a name = "l778" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l779" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > SOCKET_STATE_BIND_REQ: < / span > < span class = cF2 > //< / span > < span class = cF0 > < / span > < span class = cF2 > if BIND request success, set BOUND.< / span > < span class = cF0 >
< a name = "l780" > < / a > tcp_socket-> socket-> state = SOCKET_STATE_BOUND;
< a name = "l781" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
< a name = "l782" > < / a >
< a name = "l783" > < / a > < / span > < span class = cF1 > default< / span > < span class = cF0 > :
< a name = "l784" > < / a > NetErr(< / span > < span class = cF6 > " TCP SOCKET BIND: Failed, Misconfigured Socket state-machine." < / span > < span class = cF0 > );
< a name = "l785" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l786" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l787" > < / a >
< a name = "l788" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
< a name = "l789" > < / a > }
< a name = "l790" > < / a >
< a name = "l791" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > TCPSocketClose(CTCPSocket *tcp_socket)
< a name = "l792" > < / a > {
< a name = "l793" > < / a > CTCPTreeNode *head = tcp_globals.bound_socket_tree;
< a name = "l794" > < / a > CTCPTreeNode *node;
< a name = "l795" > < / a > CTCPTreeQueue *queue;
< a name = "l796" > < / a > CTCPAckQueue *send_buffer;
< a name = "l797" > < / a > CTCPAcceptQueue *pending;
< a name = "l798" > < / a > CSocketAddressIPV4 *address = & tcp_socket-> source_address;
< a name = "l799" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > timeout;
< a name = "l800" > < / a >
< a name = "l801" > < / a > SocketClose(tcp_socket-> socket); < / span > < span class = cF2 > // TODO: testing on closing a socket while another task is using it< / span > < span class = cF0 >
< a name = "l802" > < / a >
< a name = "l803" > < / a > < / span > < span class = cF1 > switch< / span > < span class = cF0 > (tcp_socket-> state)
< a name = "l804" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l805" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > TCP_STATE_ESTABLISHED:
< a name = "l806" > < / a > < / span > < span class = cF1 > while< / span > < span class = cF0 > (TCPSendFlags< / span > < span class = cF7 > (< / span > < span class = cF0 > tcp_socket, TCPF_FIN | TCPF_ACK< / span > < span class = cF7 > )< / span > < span class = cF0 > < < / span > < span class = cFE > 0< / span > < span class = cF0 > )
< a name = "l807" > < / a > {
< a name = "l808" > < / a > TCPCheckACKQueue(tcp_socket);
< a name = "l809" > < / a > < / span > < span class = cF5 > Sleep< / span > < span class = cF0 > (< / span > < span class = cFE > 1< / span > < span class = cF0 > );
< a name = "l810" > < / a > }
< a name = "l811" > < / a >
< a name = "l812" > < / a > tcp_socket-> state = TCP_STATE_FIN_WAIT1;
< a name = "l813" > < / a >
< a name = "l814" > < / a > < / span > < span class = cF2 > // Shrine has TODOs:< / span > < span class = cF0 > < / span > < span class = cF2 > - What states are allowed here?< / span > < span class = cF0 >
< a name = "l815" > < / a > < / span > < span class = cF2 > //< / span > < span class = cF0 > < / span > < span class = cF2 > - This can block forever if our recv buffer fills up< / span > < span class = cF0 >
< a name = "l816" > < / a > < / span > < span class = cF2 > //< / span > < span class = cF0 > < / span > < span class = cF2 > < / span > < span class = cF0 > < / span > < span class = cF2 > but remote insists on sending more.< / span > < span class = cF0 >
< a name = "l817" > < / a > < / span > < span class = cF2 > // Implementing timeout here to force close.< / span > < span class = cF0 >
< a name = "l818" > < / a > timeout = < / span > < span class = cFB > counts< / span > < span class = cF0 > .jiffies + tcp_socket-> timeout * < / span > < span class = cF3 > JIFFY_FREQ< / span > < span class = cF0 > / < / span > < span class = cFE > 1000< / span > < span class = cF0 > ;
< a name = "l819" > < / a >
< a name = "l820" > < / a > < / span > < span class = cF1 > while< / span > < span class = cF0 > (tcp_socket-> state == TCP_STATE_FIN_WAIT1 & &
< a name = "l821" > < / a > tcp_socket-> first_unacked_seq != tcp_socket-> next_send_seq_num & &
< a name = "l822" > < / a > < / span > < span class = cFB > counts< / span > < span class = cF0 > .jiffies < timeout)
< a name = "l823" > < / a > {
< a name = "l824" > < / a > TCPCheckACKQueue(tcp_socket);
< a name = "l825" > < / a > < / span > < span class = cF5 > Sleep< / span > < span class = cF0 > (< / span > < span class = cFE > 1< / span > < span class = cF0 > );
< a name = "l826" > < / a > }
< a name = "l827" > < / a >
< a name = "l828" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (tcp_socket-> state == TCP_STATE_FIN_WAIT1)
< a name = "l829" > < / a > tcp_socket-> state = TCP_STATE_FIN_WAIT2;
< a name = "l830" > < / a >
< a name = "l831" > < / a > timeout = < / span > < span class = cFB > counts< / span > < span class = cF0 > .jiffies + tcp_socket-> timeout * < / span > < span class = cF3 > JIFFY_FREQ< / span > < span class = cF0 > / < / span > < span class = cFE > 1000< / span > < span class = cF0 > ;
< a name = "l832" > < / a > < / span > < span class = cF1 > while< / span > < span class = cF0 > (tcp_socket-> state == TCP_STATE_FIN_WAIT2 & & < / span > < span class = cFB > counts< / span > < span class = cF0 > .jiffies < timeout)
< a name = "l833" > < / a > < / span > < span class = cF5 > Sleep< / span > < span class = cF0 > (< / span > < span class = cFE > 1< / span > < span class = cF0 > );
< a name = "l834" > < / a >
< a name = "l835" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
< a name = "l836" > < / a >
< a name = "l837" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > TCP_STATE_CLOSE_WAIT:
< a name = "l838" > < / a > < / span > < span class = cF1 > while< / span > < span class = cF0 > (TCPSendFlags< / span > < span class = cF7 > (< / span > < span class = cF0 > tcp_socket, TCPF_FIN | TCPF_ACK< / span > < span class = cF7 > )< / span > < span class = cF0 > < < / span > < span class = cFE > 0< / span > < span class = cF0 > )
< a name = "l839" > < / a > {
< a name = "l840" > < / a > TCPCheckACKQueue(tcp_socket);
< a name = "l841" > < / a > < / span > < span class = cF5 > Sleep< / span > < span class = cF0 > (< / span > < span class = cFE > 1< / span > < span class = cF0 > );
< a name = "l842" > < / a > }
< a name = "l843" > < / a >
< a name = "l844" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (tcp_socket-> state == TCP_STATE_CLOSE_WAIT)
< a name = "l845" > < / a > tcp_socket-> state = TCP_STATE_LAST_ACK;
< a name = "l846" > < / a >
< a name = "l847" > < / a > timeout = < / span > < span class = cFB > counts< / span > < span class = cF0 > .jiffies + tcp_socket-> timeout * < / span > < span class = cF3 > JIFFY_FREQ< / span > < span class = cF0 > / < / span > < span class = cFE > 1000< / span > < span class = cF0 > ;
< a name = "l848" > < / a > < / span > < span class = cF1 > while< / span > < span class = cF0 > (tcp_socket-> state == TCP_STATE_LAST_ACK & &
< a name = "l849" > < / a > tcp_socket-> first_unacked_seq != tcp_socket-> next_send_seq_num & &
< a name = "l850" > < / a > < / span > < span class = cFB > counts< / span > < span class = cF0 > .jiffies < timeout)
< a name = "l851" > < / a > {
< a name = "l852" > < / a > TCPCheckACKQueue(tcp_socket);
< a name = "l853" > < / a > < / span > < span class = cF5 > Sleep< / span > < span class = cF0 > (< / span > < span class = cFE > 1< / span > < span class = cF0 > );
< a name = "l854" > < / a > }
< a name = "l855" > < / a >
< a name = "l856" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
< a name = "l857" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l858" > < / a >
< a name = "l859" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (IsTCPStateSync< / span > < span class = cF7 > (< / span > < span class = cF0 > tcp_socket< / span > < span class = cF7 > )< / span > < span class = cF0 > )
< a name = "l860" > < / a > TCPSendFlags(tcp_socket, TCPF_RST);
< a name = "l861" > < / a >
< a name = "l862" > < / a > < / span > < span class = cF2 > // remove from bound list, free associated allocs< / span > < span class = cF0 >
< a name = "l863" > < / a >
< a name = "l864" > < / a > node = TCPTreeNodeFind(< / span > < span class = cF5 > EndianU16< / span > < span class = cF7 > (< / span > < span class = cF0 > address-> port< / span > < span class = cF7 > )< / span > < span class = cF0 > , head);
< a name = "l865" > < / a >
< a name = "l866" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (node)
< a name = "l867" > < / a > queue = TCPTreeNodeQueueSocketFind(tcp_socket, node);
< a name = "l868" > < / a > < / span > < span class = cF1 > else< / span > < span class = cF0 >
< a name = "l869" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l870" > < / a > < / span > < span class = cF5 > Debug< / span > < span class = cF0 > (< / span > < span class = cF6 > " TODO: Didn't find node at socket during TCPSocketClose!\n" < / span > < span class = cF0 > );
< a name = "l871" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l872" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l873" > < / a >
< a name = "l874" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (queue)
< a name = "l875" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l876" > < / a > TCPTreeNodeQueueSocketSinglePop(tcp_socket, node);
< a name = "l877" > < / a >
< a name = "l878" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (node-> queue == node-> queue-> next)
< a name = "l879" > < / a > { < / span > < span class = cF2 > // if we popped the only queue on the node, remove the node.< / span > < span class = cF0 >
< a name = "l880" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (node == head)
< a name = "l881" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 > < / span > < span class = cF2 > // head is the global. if node is the global, change it and add branches.< / span > < span class = cF0 >
< a name = "l882" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (node-> left)
< a name = "l883" > < / a > {
< a name = "l884" > < / a > tcp_globals.bound_socket_tree = head = node-> left;
< a name = "l885" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (node-> right)
< a name = "l886" > < / a > TCPTreeNodeAdd(node-> right, head);
< a name = "l887" > < / a > }
< a name = "l888" > < / a > < / span > < span class = cF1 > else< / span > < span class = cF0 > < / span > < span class = cF1 > if< / span > < span class = cF0 > (node-> right)
< a name = "l889" > < / a > tcp_globals.bound_socket_tree = node-> right;
< a name = "l890" > < / a > < / span > < span class = cF1 > else< / span > < span class = cF0 >
< a name = "l891" > < / a > tcp_globals.bound_socket_tree = < / span > < span class = cF3 > NULL< / span > < span class = cF0 > ;
< a name = "l892" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l893" > < / a > < / span > < span class = cF1 > else< / span > < span class = cF0 > < / span > < span class = cF2 > // if node is not the global, just pop it from the tree< / span > < span class = cF0 >
< a name = "l894" > < / a > TCPTreeNodeSinglePop(node-> value, head);
< a name = "l895" > < / a >
< a name = "l896" > < / a > < / span > < span class = cF5 > Free< / span > < span class = cF0 > (node);
< a name = "l897" > < / a > }
< a name = "l898" > < / a >
< a name = "l899" > < / a > < / span > < span class = cF5 > Free< / span > < span class = cF0 > (tcp_socket-> socket);
< a name = "l900" > < / a >
< a name = "l901" > < / a > NetWarn(< / span > < span class = cF6 > " TCP SOCKET CLOSE: Freeing socket, ACK queue, accept() queue, & receive buffer." < / span > < span class = cF0 > );
< a name = "l902" > < / a > < / span > < span class = cF5 > Free< / span > < span class = cF0 > (tcp_socket-> receive_buffer);
< a name = "l903" > < / a >
< a name = "l904" > < / a > send_buffer = tcp_socket-> ack_queue-> next;
< a name = "l905" > < / a > < / span > < span class = cF1 > while< / span > < span class = cF0 > (send_buffer != tcp_socket-> ack_queue)
< a name = "l906" > < / a > {
< a name = "l907" > < / a > NetWarn(< / span > < span class = cF6 > " TCP SOCKET CLOSE: Freeing send buffer @ 0x%0X" < / span > < span class = cF0 > , send_buffer);
< a name = "l908" > < / a > < / span > < span class = cF5 > QueueRemove< / span > < span class = cF0 > (send_buffer);
< a name = "l909" > < / a > < / span > < span class = cF5 > Free< / span > < span class = cF0 > (send_buffer-> tcp_packet);
< a name = "l910" > < / a > < / span > < span class = cF5 > Free< / span > < span class = cF0 > (send_buffer);
< a name = "l911" > < / a > send_buffer = tcp_socket-> ack_queue-> next;
< a name = "l912" > < / a > }
< a name = "l913" > < / a >
< a name = "l914" > < / a > pending = tcp_socket-> accept_queue-> next;
< a name = "l915" > < / a > < / span > < span class = cF1 > while< / span > < span class = cF0 > (pending != tcp_socket-> accept_queue)
< a name = "l916" > < / a > {
< a name = "l917" > < / a > NetWarn(< / span > < span class = cF6 > " TCP SOCKET CLOSE: Freeing pending connection @ 0x%0X" < / span > < span class = cF0 > , pending);
< a name = "l918" > < / a > < / span > < span class = cF5 > QueueRemove< / span > < span class = cF0 > (pending);
< a name = "l919" > < / a > < / span > < span class = cF5 > Free< / span > < span class = cF0 > (pending);
< a name = "l920" > < / a > pending = tcp_socket-> accept_queue-> next;
< a name = "l921" > < / a > }
< a name = "l922" > < / a >
< a name = "l923" > < / a >
< a name = "l924" > < / a > < / span > < span class = cF5 > Free< / span > < span class = cF0 > (tcp_socket);
< a name = "l925" > < / a > < / span > < span class = cF5 > Free< / span > < span class = cF0 > (queue);
< a name = "l926" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l927" > < / a > < / span > < span class = cF1 > else< / span > < span class = cF0 >
< a name = "l928" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l929" > < / a > < / span > < span class = cF5 > Debug< / span > < span class = cF0 > (< / span > < span class = cF6 > " TODO: Didn't find queue at socket during TCPSocketClose!\n" < / span > < span class = cF0 > );
< a name = "l930" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l931" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l932" > < / a >
< a name = "l933" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
< a name = "l934" > < / a >
< a name = "l935" > < / a > }
< a name = "l936" > < / a >
< a name = "l937" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > TCPSocketConnect(CTCPSocket *tcp_socket, CSocketAddressStorage *address)
< a name = "l938" > < / a > { < / span > < span class = cF2 > // Bind and connect a socket to the destination address and port in address param, local port automatic.< / span > < span class = cF0 >
< a name = "l939" > < / a > < / span > < span class = cF9 > U16< / span > < span class = cF0 > source_port = < / span > < span class = cF5 > EndianU16< / span > < span class = cF0 > (< / span > < span class = cFE > 0x8000< / span > < span class = cF0 > + tcp_globals.next_source_port++ & < / span > < span class = cFE > 0x7FFF< / span > < span class = cF0 > );
< a name = "l940" > < / a > CTCPTreeNode *head = tcp_globals.bound_socket_tree;
< a name = "l941" > < / a > CTCPTreeNode *temp_node;
< a name = "l942" > < / a > CSocketAddressIPV4 *ipv4_address;
< a name = "l943" > < / a > CSocketAddressIPV4 *ipv4_destination;
< a name = "l944" > < / a > CSocketAddressIPV4 *ipv4_source;
< a name = "l945" > < / a > CSocketAddressIPV6 *ipv6_address;
< a name = "l946" > < / a > CSocketAddressIPV6 *ipv6_destination;
< a name = "l947" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > timeout;
< a name = "l948" > < / a > < / span > < span class = cF9 > U16< / span > < span class = cF0 > port;
< a name = "l949" > < / a >
< a name = "l950" > < / a >
< a name = "l951" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (!SocketConnect< / span > < span class = cF7 > (< / span > < span class = cF0 > tcp_socket-> socket< / span > < span class = cF7 > )< / span > < span class = cF0 > )
< a name = "l952" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l953" > < / a > NetErr(< / span > < span class = cF6 > " TCP SOCKET CONNECT: Failed, Socket state-machine must be in READY state." < / span > < span class = cF0 > );
< a name = "l954" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l955" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l956" > < / a >
< a name = "l957" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (tcp_socket-> state != TCP_STATE_CLOSED)
< a name = "l958" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l959" > < / a > NetErr(< / span > < span class = cF6 > " TCP SOCKET CONNECT: TCP Socket must be in CLOSED state." < / span > < span class = cF0 > );
< a name = "l960" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l961" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l962" > < / a >
< a name = "l963" > < / a > < / span > < span class = cF1 > switch< / span > < span class = cF0 > (address-> family)
< a name = "l964" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l965" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_INET:
< a name = "l966" > < / a >
< a name = "l967" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (tcp_socket-> source_address.family == AF_INET6)
< a name = "l968" > < / a > {
< a name = "l969" > < / a > NetErr(< / span > < span class = cF6 > " TCP SOCKET CONNECT: FIXME, IPV6-> IPV4 TCP CONNECT" < / span > < span class = cF0 > );
< a name = "l970" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l971" > < / a > }
< a name = "l972" > < / a >
< a name = "l973" > < / a > ipv4_address = address;
< a name = "l974" > < / a > ipv4_destination = & tcp_socket-> destination_address;
< a name = "l975" > < / a >
< a name = "l976" > < / a > ipv4_destination-> family = AF_INET;
< a name = "l977" > < / a > ipv4_destination-> address.address = ipv4_address-> address.address; < / span > < span class = cF2 > // bind socket to address in parameter.< / span > < span class = cF0 >
< a name = "l978" > < / a > ipv4_destination-> port = ipv4_address-> port; < / span > < span class = cF2 > // ... consistency would say keep in Big Endian ...< / span > < span class = cF0 >
< a name = "l979" > < / a >
< a name = "l980" > < / a > ipv4_source = & tcp_socket-> source_address;
< a name = "l981" > < / a >
< a name = "l982" > < / a > ipv4_source-> port = source_port;
< a name = "l983" > < / a >
< a name = "l984" > < / a > port = < / span > < span class = cF5 > EndianU16< / span > < span class = cF0 > (source_port); < / span > < span class = cF2 > // port member should be Big Endian, so now we're going L.E (?)< / span > < span class = cF0 >
< a name = "l985" > < / a >
< a name = "l986" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
< a name = "l987" > < / a >
< a name = "l988" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_INET6:
< a name = "l989" > < / a >
< a name = "l990" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (tcp_socket-> source_address.family == AF_INET)
< a name = "l991" > < / a > {
< a name = "l992" > < / a > NetErr(< / span > < span class = cF6 > " TCP SOCKET CONNECT: Incompatible Address type." < / span > < span class = cF0 > );
< a name = "l993" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l994" > < / a > }
< a name = "l995" > < / a >
< a name = "l996" > < / a > ipv6_address = address;
< a name = "l997" > < / a > ipv6_destination = & tcp_socket-> destination_address;
< a name = "l998" > < / a > < / span > < span class = cF2 > // ...< / span > < span class = cF0 >
< a name = "l999" > < / a > < / span > < span class = cF2 > // ...< / span > < span class = cF0 >
< a name = "l1000" > < / a >
< a name = "l1001" > < / a > port = < / span > < span class = cF5 > EndianU16< / span > < span class = cF0 > (source_port); < / span > < span class = cF2 > // port member should be Big Endian, so now we're going L.E (?)< / span > < span class = cF0 >
< a name = "l1002" > < / a >
< a name = "l1003" > < / a > NetErr(< / span > < span class = cF6 > " TCP SOCKET CONNECT: FIXME, IPV6 TCP CONNECT" < / span > < span class = cF0 > );
< a name = "l1004" > < / a >
< a name = "l1005" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
< a name = "l1006" > < / a >
< a name = "l1007" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_UNSPEC:
< a name = "l1008" > < / a > NetErr(< / span > < span class = cF6 > " TCP SOCKET CONNECT: Error, AF_UNSPEC TCP CONNECT -- param family" < / span > < span class = cF0 > );
< a name = "l1009" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
< a name = "l1010" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l1011" > < / a >
< a name = "l1012" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (head)
< a name = "l1013" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l1014" > < / a > < / span > < span class = cF2 > // look for our port.< / span > < span class = cF0 >
< a name = "l1015" > < / a > temp_node = TCPTreeNodeFind(port, head);
< a name = "l1016" > < / a >
< a name = "l1017" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (temp_node)
< a name = "l1018" > < / a > { < / span > < span class = cF2 > // if we find we have bound sockets at port, check address before adding to queue< / span > < span class = cF0 >
< a name = "l1019" > < / a > < / span > < span class = cF1 > switch< / span > < span class = cF0 > (address-> family)
< a name = "l1020" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l1021" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_INET:
< a name = "l1022" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (TCPTreeNodeQueueIPV4Find< / span > < span class = cF7 > (< / span > < span class = cF0 > ipv4_destination-> address.address, temp_node, < / span > < span class = cF3 > TRUE< / span > < span class = cF7 > )< / span > < span class = cF0 > )
< a name = "l1023" > < / a > {
< a name = "l1024" > < / a > NetErr(< / span > < span class = cF6 > " TCP SOCKET CONNECT: Address already in Bound Socket Tree !" < / span > < span class = cF0 > );
< a name = "l1025" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l1026" > < / a > }
< a name = "l1027" > < / a > < / span > < span class = cF1 > else< / span > < span class = cF0 >
< a name = "l1028" > < / a > { < / span > < span class = cF2 > // if no address match, free to add socket to the node queue< / span > < span class = cF0 >
< a name = "l1029" > < / a > NetDebug(< / span > < span class = cF6 > " TCP SOCKET CONNECT: No address match, adding socket to node queue" < / span > < span class = cF0 > );
< a name = "l1030" > < / a > TCPTreeNodeQueueAdd(tcp_socket, temp_node);
< a name = "l1031" > < / a > }
< a name = "l1032" > < / a >
< a name = "l1033" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
< a name = "l1034" > < / a >
< a name = "l1035" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_INET6:
< a name = "l1036" > < / a > NetErr(< / span > < span class = cF6 > " TCP SOCKET CONNECT: FIXME, IPV6 TCP CONNECT" < / span > < span class = cF0 > );
< a name = "l1037" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
< a name = "l1038" > < / a >
< a name = "l1039" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_UNSPEC:
< a name = "l1040" > < / a > NetErr(< / span > < span class = cF6 > " TCP SOCKET CONNECT: Error, AF_UNSPEC TCP CONNECT -- found in bound tree" < / span > < span class = cF0 > );
< a name = "l1041" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
< a name = "l1042" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l1043" > < / a > }
< a name = "l1044" > < / a > < / span > < span class = cF1 > else< / span > < span class = cF0 >
< a name = "l1045" > < / a > { < / span > < span class = cF2 > // if we get no node back from port search, we didn't find it and are free to add a new node.< / span > < span class = cF0 >
< a name = "l1046" > < / a > temp_node = TCPTreeNodeParamAdd(port, head); < / span > < span class = cF2 > // add new node with port, return its *.< / span > < span class = cF0 >
< a name = "l1047" > < / a > TCPTreeNodeQueueAdd(tcp_socket, temp_node);
< a name = "l1048" > < / a > }
< a name = "l1049" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l1050" > < / a > < / span > < span class = cF1 > else< / span > < span class = cF0 > < / span > < span class = cF2 > // if no bound sockets, we init the tree as a new node< / span > < span class = cF0 >
< a name = "l1051" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l1052" > < / a > tcp_globals.bound_socket_tree = head = TCPTreeNodeParamInit(port); < / span > < span class = cF2 > //... shouuuld be in L.E .. ?< / span > < span class = cF0 >
< a name = "l1053" > < / a > TCPTreeNodeQueueAdd(tcp_socket, head); < / span > < span class = cF2 > // add the tcp socket to the port queue< / span > < span class = cF0 >
< a name = "l1054" > < / a > < / span > < span class = cF2 > // maybe more checks to do before this, dunno rn.< / span > < span class = cF0 >
< a name = "l1055" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l1056" > < / a >
< a name = "l1057" > < / a > tcp_socket-> connection_time = < / span > < span class = cF5 > tS< / span > < span class = cF0 > ;
< a name = "l1058" > < / a > tcp_socket-> receive_window = TCP_WINDOW_SIZE;
< a name = "l1059" > < / a >
< a name = "l1060" > < / a > tcp_socket-> state = TCP_STATE_SYN_SENT;
< a name = "l1061" > < / a > TCPSendFlags(tcp_socket, TCPF_SYN);
< a name = "l1062" > < / a >
< a name = "l1063" > < / a > timeout = < / span > < span class = cFB > counts< / span > < span class = cF0 > .jiffies + tcp_socket-> timeout * < / span > < span class = cF3 > JIFFY_FREQ< / span > < span class = cF0 > / < / span > < span class = cFE > 1000< / span > < span class = cF0 > ;
< a name = "l1064" > < / a > < / span > < span class = cF1 > while< / span > < span class = cF0 > (< / span > < span class = cFB > counts< / span > < span class = cF0 > .jiffies < timeout)
< a name = "l1065" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l1066" > < / a > < / span > < span class = cF1 > switch< / span > < span class = cF0 > (tcp_socket-> state)
< a name = "l1067" > < / a > {
< a name = "l1068" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > TCP_STATE_ESTABLISHED:
< a name = "l1069" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > TCP_STATE_CLOSED:
< a name = "l1070" > < / a > timeout = < / span > < span class = cFE > 0< / span > < span class = cF0 > ; < / span > < span class = cF2 > // break out of while loop< / span > < span class = cF0 >
< a name = "l1071" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
< a name = "l1072" > < / a >
< a name = "l1073" > < / a > < / span > < span class = cF1 > default< / span > < span class = cF0 > :
< a name = "l1074" > < / a > < / span > < span class = cF5 > Sleep< / span > < span class = cF0 > (< / span > < span class = cFE > 1< / span > < span class = cF0 > );
< a name = "l1075" > < / a > }
< a name = "l1076" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l1077" > < / a >
< a name = "l1078" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (tcp_socket-> state != TCP_STATE_ESTABLISHED)
2021-11-05 09:06:09 +00:00
< a name = "l1079" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l1080" > < / a > NetErr(< / span > < span class = cF6 > " TCP SOCKET CONNECT: Failed to establish TCP Socket connection." < / span > < span class = cF0 > );
< a name = "l1081" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l1082" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l1083" > < / a >
< a name = "l1084" > < / a > < / span > < span class = cF1 > switch< / span > < span class = cF0 > (tcp_socket-> socket-> state)
< a name = "l1085" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l1086" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > SOCKET_STATE_CONNECT_REQ: < / span > < span class = cF2 > //< / span > < span class = cF0 > < / span > < span class = cF2 > if CONNECT request success, set OPEN.< / span > < span class = cF0 >
< a name = "l1087" > < / a > tcp_socket-> socket-> state = SOCKET_STATE_OPEN;
< a name = "l1088" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
< a name = "l1089" > < / a >
< a name = "l1090" > < / a > < / span > < span class = cF1 > default< / span > < span class = cF0 > :
< a name = "l1091" > < / a > NetErr(< / span > < span class = cF6 > " TCP SOCKET CONNECT: Failed, Misconfigured Socket state-machine." < / span > < span class = cF0 > );
< a name = "l1092" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l1093" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
2021-07-05 01:12:38 +01:00
< a name = "l1094" > < / a >
2021-11-05 09:06:09 +00:00
< a name = "l1095" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
< a name = "l1096" > < / a > }
< a name = "l1097" > < / a >
< a name = "l1098" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > TCPSocketListen(CTCPSocket *tcp_socket, < / span > < span class = cF9 > I64< / span > < span class = cF0 > backlog_size)
< a name = "l1099" > < / a > { < / span > < span class = cF2 > // Set a bound socket to Listen for incoming connections. Backlog size is max amount of waiting connections allowed< / span > < span class = cF0 >
< a name = "l1100" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (!SocketListen< / span > < span class = cF7 > (< / span > < span class = cF0 > tcp_socket-> socket< / span > < span class = cF7 > )< / span > < span class = cF0 > )
< a name = "l1101" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l1102" > < / a > NetErr(< / span > < span class = cF6 > " TCP SOCKET LISTEN: Socket state-machine must be in BOUND state." < / span > < span class = cF0 > );
< a name = "l1103" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l1104" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l1105" > < / a >
< a name = "l1106" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (tcp_socket-> state != TCP_STATE_CLOSED)
< a name = "l1107" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l1108" > < / a > NetErr(< / span > < span class = cF6 > " TCP SOCKET LISTEN: TCP Socket must be in CLOSED state." < / span > < span class = cF0 > );
< a name = "l1109" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l1110" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
2021-07-05 01:12:38 +01:00
< a name = "l1111" > < / a >
2021-11-05 09:06:09 +00:00
< a name = "l1112" > < / a > tcp_socket-> state = TCP_STATE_LISTEN;
< a name = "l1113" > < / a > tcp_socket-> accept_queue_limit = backlog_size;
< a name = "l1114" > < / a >
< a name = "l1115" > < / a > < / span > < span class = cF1 > switch< / span > < span class = cF0 > (tcp_socket-> socket-> state)
< a name = "l1116" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l1117" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > SOCKET_STATE_LISTEN_REQ: < / span > < span class = cF2 > //< / span > < span class = cF0 > < / span > < span class = cF2 > if LISTEN request success, set BOUND.< / span > < span class = cF0 >
< a name = "l1118" > < / a > tcp_socket-> socket-> state = SOCKET_STATE_LISTENING;
< a name = "l1119" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
< a name = "l1120" > < / a >
< a name = "l1121" > < / a > < / span > < span class = cF1 > default< / span > < span class = cF0 > :
< a name = "l1122" > < / a > NetErr(< / span > < span class = cF6 > " TCP SOCKET BIND: Failed, Misconfigured Socket state-machine." < / span > < span class = cF0 > );
< a name = "l1123" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l1124" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
2021-07-05 01:12:38 +01:00
< a name = "l1125" > < / a >
2021-11-05 09:06:09 +00:00
< a name = "l1126" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
< a name = "l1127" > < / a > }
< a name = "l1128" > < / a >
< a name = "l1129" > < / a > CTCPSocket *TCPSocketAccept(CTCPSocket *tcp_socket)
< a name = "l1130" > < / a > { < / span > < span class = cF2 > // Accepts & creates a new socket, uses timeout inherited from Listening socket.< / span > < span class = cF0 >
< a name = "l1131" > < / a > CTCPAcceptQueue *pending;
< a name = "l1132" > < / a > CTCPSocket *new_socket;
< a name = "l1133" > < / a > CSocketAddressIPV4 *temp_addr;
< a name = "l1134" > < / a > CSocketAddressIPV4 ipv4_address;
< a name = "l1135" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > timeout;
< a name = "l1136" > < / a >
< a name = "l1137" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (!SocketAccept< / span > < span class = cF7 > (< / span > < span class = cF0 > tcp_socket-> socket< / span > < span class = cF7 > )< / span > < span class = cF0 > )
< a name = "l1138" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l1139" > < / a > NetErr(< / span > < span class = cF6 > " TCP SOCKET ACCEPT: Failed, Socket state-machine must be in LISTENING state." < / span > < span class = cF0 > );
< a name = "l1140" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > < / span > < span class = cF3 > NULL< / span > < span class = cF0 > ;
< a name = "l1141" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l1142" > < / a >
< a name = "l1143" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (tcp_socket-> state != TCP_STATE_LISTEN)
< a name = "l1144" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l1145" > < / a > NetErr(< / span > < span class = cF6 > " TCP SOCKET LISTEN: TCP Socket must be in LISTEN state." < / span > < span class = cF0 > );
< a name = "l1146" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > < / span > < span class = cF3 > NULL< / span > < span class = cF0 > ;
< a name = "l1147" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l1148" > < / a >
< a name = "l1149" > < / a > timeout = < / span > < span class = cFB > counts< / span > < span class = cF0 > .jiffies + tcp_socket-> timeout * < / span > < span class = cF3 > JIFFY_FREQ< / span > < span class = cF0 > / < / span > < span class = cFE > 1000< / span > < span class = cF0 > ;
< a name = "l1150" > < / a > < / span > < span class = cF1 > while< / span > < span class = cF0 > (< / span > < span class = cF7 > (< / span > < span class = cF0 > pending = tcp_socket-> accept_queue-> next< / span > < span class = cF7 > )< / span > < span class = cF0 > == tcp_socket-> accept_queue)
< a name = "l1151" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l1152" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (< / span > < span class = cFB > counts< / span > < span class = cF0 > .jiffies > timeout)
< a name = "l1153" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > < / span > < span class = cF3 > NULL< / span > < span class = cF0 > ;
< a name = "l1154" > < / a > < / span > < span class = cF1 > else< / span > < span class = cF0 >
< a name = "l1155" > < / a > < / span > < span class = cF5 > Sleep< / span > < span class = cF0 > (< / span > < span class = cFE > 1< / span > < span class = cF0 > );
< a name = "l1156" > < / a > < / span > < span class = cF2 > // Yield;< / span > < span class = cF0 >
< a name = "l1157" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l1158" > < / a >
< a name = "l1159" > < / a > < / span > < span class = cF5 > QueueRemove< / span > < span class = cF0 > (pending); < / span > < span class = cF2 > // whether successful accept() or not, remove pending connection.< / span > < span class = cF0 >
2021-07-05 01:12:38 +01:00
< a name = "l1160" > < / a >
2021-11-05 09:06:09 +00:00
< a name = "l1161" > < / a > < / span > < span class = cF2 > // TODO: rework accept logic to handle IPV6 addresses< / span > < span class = cF0 >
< a name = "l1162" > < / a > new_socket = TCPSocket(AF_INET);
< a name = "l1163" > < / a >
< a name = "l1164" > < / a > new_socket-> next_recv_seq_num = ++pending-> segment_seq_num;
< a name = "l1165" > < / a > new_socket-> connection_time = < / span > < span class = cF5 > tS< / span > < span class = cF0 > ;
< a name = "l1166" > < / a > new_socket-> receive_window = TCP_WINDOW_SIZE;
< a name = "l1167" > < / a > new_socket-> timeout = tcp_socket-> timeout;
< a name = "l1168" > < / a >
< a name = "l1169" > < / a > temp_addr = & tcp_socket-> source_address;
< a name = "l1170" > < / a >
< a name = "l1171" > < / a > ipv4_address.family = AF_INET;
< a name = "l1172" > < / a > < / span > < span class = cF2 > //< / span > < span class = cF0 > < / span > < span class = cF2 > ipv4_address.port< / span > < span class = cF0 > < / span > < span class = cF2 > = pending-> port;< / span > < span class = cF0 >
< a name = "l1173" > < / a > ipv4_address.port = temp_addr-> port;
< a name = "l1174" > < / a > ipv4_address.address.address = pending-> ipv4_address;
2021-07-05 01:12:38 +01:00
< a name = "l1175" > < / a >
2021-11-05 09:06:09 +00:00
< a name = "l1176" > < / a > NetDebug(< / span > < span class = cF6 > " TCP SOCKET ACCEPT: Attempting to Bind to pending connection %0X @ src/dst ports %d,%d." < / span > < span class = cF0 > ,
< a name = "l1177" > < / a > pending-> ipv4_address, ipv4_address.port, pending-> port);
< a name = "l1178" > < / a >
< a name = "l1179" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (TCPSocketBind< / span > < span class = cF7 > (< / span > < span class = cF0 > new_socket, & ipv4_address< / span > < span class = cF7 > )< / span > < span class = cF0 > == -< / span > < span class = cFE > 1< / span > < span class = cF0 > )
< a name = "l1180" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l1181" > < / a > < / span > < span class = cF5 > Free< / span > < span class = cF0 > (pending);
< a name = "l1182" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > < / span > < span class = cF3 > NULL< / span > < span class = cF0 > ;
< a name = "l1183" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l1184" > < / a >
< a name = "l1185" > < / a > temp_addr = & new_socket-> destination_address;
< a name = "l1186" > < / a >
< a name = "l1187" > < / a > temp_addr-> port = pending-> port;
< a name = "l1188" > < / a >
< a name = "l1189" > < / a > new_socket-> state = TCP_STATE_SYN_RECEIVED;
2021-07-05 01:12:38 +01:00
< a name = "l1190" > < / a >
2021-11-05 09:06:09 +00:00
< a name = "l1191" > < / a > NetDebug(< / span > < span class = cF6 > " TCP SOCKET ACCEPT: Attempting Send Flags SYN ACK back to requester." < / span > < span class = cF0 > );
< a name = "l1192" > < / a > TCPSendFlags(new_socket, TCPF_SYN | TCPF_ACK);
< a name = "l1193" > < / a >
< a name = "l1194" > < / a > timeout = < / span > < span class = cFB > counts< / span > < span class = cF0 > .jiffies + new_socket-> timeout * < / span > < span class = cF3 > JIFFY_FREQ< / span > < span class = cF0 > / < / span > < span class = cFE > 1000< / span > < span class = cF0 > ;
< a name = "l1195" > < / a > < / span > < span class = cF1 > while< / span > < span class = cF0 > (< / span > < span class = cFB > counts< / span > < span class = cF0 > .jiffies < timeout)
< a name = "l1196" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l1197" > < / a > < / span > < span class = cF1 > switch< / span > < span class = cF0 > (new_socket-> state)
< a name = "l1198" > < / a > {
< a name = "l1199" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > TCP_STATE_ESTABLISHED:
< a name = "l1200" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > TCP_STATE_CLOSED:
< a name = "l1201" > < / a > timeout = < / span > < span class = cFE > 0< / span > < span class = cF0 > ; < / span > < span class = cF2 > // break out of while loop< / span > < span class = cF0 >
< a name = "l1202" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
< a name = "l1203" > < / a >
< a name = "l1204" > < / a > < / span > < span class = cF1 > default< / span > < span class = cF0 > :
< a name = "l1205" > < / a > < / span > < span class = cF5 > Sleep< / span > < span class = cF0 > (< / span > < span class = cFE > 1< / span > < span class = cF0 > );
< a name = "l1206" > < / a > }
< a name = "l1207" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l1208" > < / a >
< a name = "l1209" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (new_socket-> state != TCP_STATE_ESTABLISHED)
< a name = "l1210" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l1211" > < / a > TCPSocketClose(new_socket);
< a name = "l1212" > < / a > < / span > < span class = cF5 > Free< / span > < span class = cF0 > (pending);
< a name = "l1213" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > < / span > < span class = cF3 > NULL< / span > < span class = cF0 > ;
< a name = "l1214" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l1215" > < / a >
< a name = "l1216" > < / a > < / span > < span class = cF5 > Free< / span > < span class = cF0 > (pending);
< a name = "l1217" > < / a >
< a name = "l1218" > < / a > new_socket-> socket-> state = SOCKET_STATE_OPEN;
2021-07-05 01:12:38 +01:00
< a name = "l1219" > < / a >
2021-11-05 09:06:09 +00:00
< a name = "l1220" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > new_socket;
< a name = "l1221" > < / a > }
< a name = "l1222" > < / a >
< a name = "l1223" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > TCPSocketReceive(CTCPSocket *tcp_socket, < / span > < span class = cF1 > U8< / span > < span class = cF0 > *buffer, < / span > < span class = cF9 > I64< / span > < span class = cF0 > length)
< a name = "l1224" > < / a > {
< a name = "l1225" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > read_position;
< a name = "l1226" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > write_position;
< a name = "l1227" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > read_total = < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
< a name = "l1228" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > step;
< a name = "l1229" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > timeout;
< a name = "l1230" > < / a >
< a name = "l1231" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (!SocketReceive< / span > < span class = cF7 > (< / span > < span class = cF0 > tcp_socket-> socket< / span > < span class = cF7 > )< / span > < span class = cF0 > )
< a name = "l1232" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l1233" > < / a > NetErr(< / span > < span class = cF6 > " TCP SOCKET RECEIVE: Failed, Socket state-machine must be in OPEN or BOUND state." < / span > < span class = cF0 > );
< a name = "l1234" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > < / span > < span class = cF3 > NULL< / span > < span class = cF0 > ;
< a name = "l1235" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l1236" > < / a >
< a name = "l1237" > < / a > timeout = < / span > < span class = cFB > counts< / span > < span class = cF0 > .jiffies + tcp_socket-> timeout * < / span > < span class = cF3 > JIFFY_FREQ< / span > < span class = cF0 > / < / span > < span class = cFE > 1000< / span > < span class = cF0 > ;
< a name = "l1238" > < / a >
2021-11-30 04:50:05 +00:00
< a name = "l1239" > < / a > < / span > < span class = cF1 > while< / span > < span class = cF0 > (< / span > < span class = cF7 > (< / span > < span class = cF0 > tcp_socket-> state == TCP_STATE_ESTABLISHED ||
< a name = "l1240" > < / a > tcp_socket-> state == TCP_STATE_FIN_WAIT1 ||
< a name = "l1241" > < / a > tcp_socket-> state == TCP_STATE_CLOSE_WAIT< / span > < span class = cF7 > )< / span > < span class = cF0 > & & < / span > < span class = cF2 > // allowing receive during closing state< / span > < span class = cF0 >
< a name = "l1242" > < / a > tcp_socket-> read_position == tcp_socket-> write_position)
< a name = "l1243" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l1244" > < / a > TCPCheckACKQueue(tcp_socket);
< a name = "l1245" > < / a > < / span > < span class = cF5 > Sleep< / span > < span class = cF0 > (< / span > < span class = cFE > 1< / span > < span class = cF0 > );
< a name = "l1246" > < / a >
< a name = "l1247" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (< / span > < span class = cFB > counts< / span > < span class = cF0 > .jiffies > timeout)
< a name = "l1248" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
< a name = "l1249" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l1250" > < / a >
< a name = "l1251" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (< / span > < span class = cF7 > (< / span > < span class = cF0 > tcp_socket-> state != TCP_STATE_ESTABLISHED || tcp_socket-> state == TCP_STATE_FIN_WAIT1< / span > < span class = cF7 > )< / span > < span class = cF0 > & &
< a name = "l1252" > < / a > tcp_socket-> read_position == tcp_socket-> write_position || length == < / span > < span class = cFE > 0< / span > < span class = cF0 > )
< a name = "l1253" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
2021-11-05 09:06:09 +00:00
< a name = "l1254" > < / a >
2021-11-30 04:50:05 +00:00
< a name = "l1255" > < / a >
< a name = "l1256" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (< / span > < span class = cFB > counts< / span > < span class = cF0 > .jiffies > timeout)
< a name = "l1257" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l1258" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (tcp_socket-> timeout != < / span > < span class = cFE > 0< / span > < span class = cF0 > ) < / span > < span class = cF2 > // Don't flood NetLog on non-blocking receives.< / span > < span class = cF0 >
< a name = "l1259" > < / a > NetErr(< / span > < span class = cF6 > " TCP SOCKET RECEIVE: Timed out." < / span > < span class = cF0 > );
< a name = "l1260" > < / a >
< a name = "l1261" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l1262" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l1263" > < / a >
< a name = "l1264" > < / a >
< a name = "l1265" > < / a > read_position = tcp_socket-> read_position;
< a name = "l1266" > < / a > write_position = tcp_socket-> write_position;
2021-07-05 01:12:38 +01:00
< a name = "l1267" > < / a >
2021-11-30 04:50:05 +00:00
< a name = "l1268" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (write_position < read_position)
< a name = "l1269" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l1270" > < / a > step = tcp_socket-> receive_buffer_size - read_position;
2021-07-05 01:12:38 +01:00
< a name = "l1271" > < / a >
2021-11-30 04:50:05 +00:00
< a name = "l1272" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (step > length)
< a name = "l1273" > < / a > step = length;
2021-11-05 09:06:09 +00:00
< a name = "l1274" > < / a >
2021-11-30 04:50:05 +00:00
< a name = "l1275" > < / a > < / span > < span class = cF5 > MemCopy< / span > < span class = cF0 > (buffer, tcp_socket-> receive_buffer + read_position, step);
< a name = "l1276" > < / a > buffer += step;
< a name = "l1277" > < / a > length -= step;
< a name = "l1278" > < / a > < / span > < span class = cF2 > //< / span > < span class = cF0 > < / span > < span class = cF2 > read_position = (read_position + step) & (tcp_socket-> receive_buffer_size - 1);< / span > < span class = cF0 >
< a name = "l1279" > < / a > read_position = (read_position + step) % tcp_socket-> receive_buffer_size;
< a name = "l1280" > < / a > read_total += step;
< a name = "l1281" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l1282" > < / a >
< a name = "l1283" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (length > < / span > < span class = cFE > 0< / span > < span class = cF0 > )
< a name = "l1284" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l1285" > < / a > step = write_position - read_position;
< a name = "l1286" > < / a >
< a name = "l1287" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (step > length)
< a name = "l1288" > < / a > step = length;
2021-11-05 09:06:09 +00:00
< a name = "l1289" > < / a >
2021-11-30 04:50:05 +00:00
< a name = "l1290" > < / a > < / span > < span class = cF5 > MemCopy< / span > < span class = cF0 > (buffer, tcp_socket-> receive_buffer + read_position, step);
< a name = "l1291" > < / a > buffer += step;
< a name = "l1292" > < / a > length -= step;
< a name = "l1293" > < / a > read_position += step;
< a name = "l1294" > < / a > read_total += step;
< a name = "l1295" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
2021-11-05 09:06:09 +00:00
< a name = "l1296" > < / a >
2021-11-30 04:50:05 +00:00
< a name = "l1297" > < / a > tcp_socket-> read_position = read_position;
< a name = "l1298" > < / a >
< a name = "l1299" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > read_total;
< a name = "l1300" > < / a > }
< a name = "l1301" > < / a >
< a name = "l1302" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > TCPSocketReceiveLine(CTCPSocket *tcp_socket, < / span > < span class = cF1 > U8< / span > < span class = cF0 > *buffer, < / span > < span class = cF9 > I64< / span > < span class = cF0 > size)
< a name = "l1303" > < / a > {
< a name = "l1304" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > received = < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
2021-07-05 01:12:38 +01:00
< a name = "l1305" > < / a >
2021-11-30 04:50:05 +00:00
< a name = "l1306" > < / a > < / span > < span class = cF1 > while< / span > < span class = cF0 > (received + < / span > < span class = cFE > 1< / span > < span class = cF0 > < size)
< a name = "l1307" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l1308" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (TCPSocketReceive< / span > < span class = cF7 > (< / span > < span class = cF0 > tcp_socket, buffer + received, < / span > < span class = cFE > 1< / span > < span class = cF7 > )< / span > < span class = cF0 > < = < / span > < span class = cFE > 0< / span > < span class = cF0 > )
< a name = "l1309" > < / a > {
< a name = "l1310" > < / a > NetErr(< / span > < span class = cF6 > " TCP SOCKET RECEIVE LINE: Failed at TCPSocketReceive." < / span > < span class = cF0 > );
< a name = "l1311" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l1312" > < / a > }
< a name = "l1313" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (buffer[received] == < / span > < span class = cF6 > '\n'< / span > < span class = cF0 > )
< a name = "l1314" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
< a name = "l1315" > < / a > < / span > < span class = cF1 > else< / span > < span class = cF0 > < / span > < span class = cF1 > if< / span > < span class = cF0 > (buffer[received] != < / span > < span class = cF6 > '\r'< / span > < span class = cF0 > )
< a name = "l1316" > < / a > received++;
< a name = "l1317" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l1318" > < / a >
< a name = "l1319" > < / a > < / span > < span class = cF2 > // Shrine has 'FIXME: safe but incorrect behavior on overflow'< / span > < span class = cF0 >
< a name = "l1320" > < / a > buffer[received] = < / span > < span class = cFE > 0< / span > < span class = cF0 > ; < / span > < span class = cF2 > // terminate string< / span > < span class = cF0 >
< a name = "l1321" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > received;
< a name = "l1322" > < / a > }
< a name = "l1323" > < / a >
< a name = "l1324" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > TCPSocketSend(CTCPSocket *tcp_socket, < / span > < span class = cF1 > U8< / span > < span class = cF0 > *buffer, < / span > < span class = cF9 > I64< / span > < span class = cF0 > length)
< a name = "l1325" > < / a > {
< a name = "l1326" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > sent_total = < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
< a name = "l1327" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > timeout = < / span > < span class = cFB > counts< / span > < span class = cF0 > .jiffies + tcp_socket-> timeout * < / span > < span class = cF3 > JIFFY_FREQ< / span > < span class = cF0 > / < / span > < span class = cFE > 1000< / span > < span class = cF0 > ;
< a name = "l1328" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > send_length;
< a name = "l1329" > < / a >
< a name = "l1330" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (!SocketSend< / span > < span class = cF7 > (< / span > < span class = cF0 > tcp_socket-> socket< / span > < span class = cF7 > )< / span > < span class = cF0 > )
< a name = "l1331" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l1332" > < / a > NetErr(< / span > < span class = cF6 > " TCP SOCKET SEND: Failed, Socket state-machine must be in OPEN state." < / span > < span class = cF0 > );
< a name = "l1333" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > -< / span > < span class = cFE > 1< / span > < span class = cF0 > ;
< a name = "l1334" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l1335" > < / a >
< a name = "l1336" > < / a > < / span > < span class = cF1 > while< / span > < span class = cF0 > (< / span > < span class = cF7 > (< / span > < span class = cF0 > tcp_socket-> state == TCP_STATE_ESTABLISHED || tcp_socket-> state == TCP_STATE_CLOSE_WAIT< / span > < span class = cF7 > )< / span > < span class = cF0 > & &
< a name = "l1337" > < / a > length)
2021-11-05 09:06:09 +00:00
< a name = "l1338" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
2021-11-30 04:50:05 +00:00
< a name = "l1339" > < / a > send_length = (tcp_socket-> first_unacked_seq + tcp_socket-> send_window - tcp_socket-> next_send_seq_num) & < / span > < span class = cFE > 0xFFFFFFFF< / span > < span class = cF0 > ;
< a name = "l1340" > < / a >
< a name = "l1341" > < / a > < / span > < span class = cF2 > // Shrine has TODO: Keep trying, tie to timeout: RFC 793 " Managing The Window" < / span > < span class = cF0 >
2021-07-05 01:12:38 +01:00
< a name = "l1342" > < / a >
2021-11-30 04:50:05 +00:00
< a name = "l1343" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (send_length == < / span > < span class = cFE > 0< / span > < span class = cF0 > )
< a name = "l1344" > < / a > {
< a name = "l1345" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (sent_total > < / span > < span class = cFE > 0< / span > < span class = cF0 > )
< a name = "l1346" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
< a name = "l1347" > < / a > < / span > < span class = cF1 > else< / span > < span class = cF0 >
< a name = "l1348" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l1349" > < / a > TCPCheckACKQueue(tcp_socket);
< a name = "l1350" > < / a > < / span > < span class = cF5 > Sleep< / span > < span class = cF0 > (< / span > < span class = cFE > 1< / span > < span class = cF0 > );
< a name = "l1351" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l1352" > < / a > }
< a name = "l1353" > < / a > < / span > < span class = cF1 > else< / span > < span class = cF0 >
< a name = "l1354" > < / a > {
< a name = "l1355" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (send_length > length)
< a name = "l1356" > < / a > send_length = length;
< a name = "l1357" > < / a >
< a name = "l1358" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (send_length > tcp_socket-> max_segment_size)
< a name = "l1359" > < / a > send_length = tcp_socket-> max_segment_size;
< a name = "l1360" > < / a >
< a name = "l1361" > < / a > NetDebug(< / span > < span class = cF6 > " TCP SOCKET SEND: Trying TCPSendData() of %d bytes." < / span > < span class = cF0 > , send_length);
< a name = "l1362" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (TCPSendData< / span > < span class = cF7 > (< / span > < span class = cF0 > tcp_socket, TCPF_ACK, buffer, send_length< / span > < span class = cF7 > )< / span > < span class = cF0 > < < / span > < span class = cFE > 0< / span > < span class = cF0 > )
< a name = "l1363" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 > < / span > < span class = cF2 > // Stall until outgoing data acknowledged.< / span > < span class = cF0 >
< a name = "l1364" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (sent_total > < / span > < span class = cFE > 0< / span > < span class = cF0 > )
< a name = "l1365" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
< a name = "l1366" > < / a > < / span > < span class = cF1 > else< / span > < span class = cF0 >
< a name = "l1367" > < / a > {
< a name = "l1368" > < / a > TCPCheckACKQueue(tcp_socket);
< a name = "l1369" > < / a > < / span > < span class = cF5 > Sleep< / span > < span class = cF0 > (< / span > < span class = cFE > 1< / span > < span class = cF0 > );
< a name = "l1370" > < / a > }
< a name = "l1371" > < / a >
< a name = "l1372" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l1373" > < / a > < / span > < span class = cF1 > else< / span > < span class = cF0 >
< a name = "l1374" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l1375" > < / a > buffer += send_length;
< a name = "l1376" > < / a > length -= send_length;
< a name = "l1377" > < / a > sent_total += send_length;
< a name = "l1378" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l1379" > < / a > }
< a name = "l1380" > < / a >
< a name = "l1381" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (< / span > < span class = cFB > counts< / span > < span class = cF0 > .jiffies > timeout)
< a name = "l1382" > < / a > {
< a name = "l1383" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (tcp_socket-> timeout != < / span > < span class = cFE > 0< / span > < span class = cF0 > ) < / span > < span class = cF2 > // Don't flood NetLog on non-blocking sends.< / span > < span class = cF0 >
< a name = "l1384" > < / a > NetErr(< / span > < span class = cF6 > " TCP SOCKET SEND: Timed out." < / span > < span class = cF0 > );
< a name = "l1385" > < / a >
< a name = "l1386" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
< a name = "l1387" > < / a > }
< a name = "l1388" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l1389" > < / a >
< a name = "l1390" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > sent_total;
< a name = "l1391" > < / a > }
2021-11-05 09:06:09 +00:00
< a name = "l1392" > < / a >
2021-11-30 04:50:05 +00:00
< a name = "l1393" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > TCPSocketSendAll(CTCPSocket *tcp_socket, < / span > < span class = cF1 > U8< / span > < span class = cF0 > *buffer, < / span > < span class = cF9 > I64< / span > < span class = cF0 > length)
< a name = "l1394" > < / a > {
< a name = "l1395" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > total = < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
< a name = "l1396" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > sent = < / span > < span class = cFE > 0< / span > < span class = cF0 > ;
< a name = "l1397" > < / a >
< a name = "l1398" > < / a > < / span > < span class = cF1 > while< / span > < span class = cF0 > (length)
< a name = "l1399" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l1400" > < / a > sent = TCPSocketSend(tcp_socket, buffer, length);
< a name = "l1401" > < / a >
< a name = "l1402" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (sent > < / span > < span class = cFE > 0< / span > < span class = cF0 > )
< a name = "l1403" > < / a > {
< a name = "l1404" > < / a > buffer += sent;
< a name = "l1405" > < / a > total += sent;
< a name = "l1406" > < / a > length -= sent;
< a name = "l1407" > < / a > }
< a name = "l1408" > < / a > < / span > < span class = cF1 > else< / span > < span class = cF0 >
< a name = "l1409" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
< a name = "l1410" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l1411" > < / a >
< a name = "l1412" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > total;
< a name = "l1413" > < / a > }
< a name = "l1414" > < / a >
< a name = "l1415" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > TCPSocketSendString(CTCPSocket *tcp_socket, < / span > < span class = cF1 > U8< / span > < span class = cF0 > *string)
< a name = "l1416" > < / a > {
< a name = "l1417" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > TCPSocketSendAll(tcp_socket, string, < / span > < span class = cF5 > StrLen< / span > < span class = cF7 > (< / span > < span class = cF0 > string< / span > < span class = cF7 > )< / span > < span class = cF0 > );
< a name = "l1418" > < / a > }
< a name = "l1419" > < / a >
< a name = "l1420" > < / a > CTCPSocket *TCPConnectionCreate(< / span > < span class = cF1 > U8< / span > < span class = cF0 > *hostname, < / span > < span class = cF9 > U16< / span > < span class = cF0 > port)
< a name = "l1421" > < / a > {
< a name = "l1422" > < / a > CSocketAddressIPV4 socket_addr;
< a name = "l1423" > < / a > CAddressInfo *current;
< a name = "l1424" > < / a > CAddressInfo *info = < / span > < span class = cF3 > NULL< / span > < span class = cF0 > ;
< a name = "l1425" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > error = DNSAddressInfoGet(hostname, < / span > < span class = cF3 > NULL< / span > < span class = cF0 > , & info);
< a name = "l1426" > < / a > CTCPSocket *result;
< a name = "l1427" > < / a >
< a name = "l1428" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (error < < / span > < span class = cFE > 0< / span > < span class = cF0 > )
< a name = "l1429" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l1430" > < / a > NetErr(< / span > < span class = cF6 > " TCP CONNECTION CREATE: Failed at DNSAddressInfoGet." < / span > < span class = cF0 > );
< a name = "l1431" > < / a > AddressInfoFree(info);
< a name = "l1432" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > < / span > < span class = cF3 > NULL< / span > < span class = cF0 > ;
< a name = "l1433" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
2021-11-05 09:06:09 +00:00
< a name = "l1434" > < / a >
2021-11-30 04:50:05 +00:00
< a name = "l1435" > < / a > socket_addr.family = AF_INET;
< a name = "l1436" > < / a > socket_addr.port = < / span > < span class = cF5 > EndianU16< / span > < span class = cF0 > (port);
< a name = "l1437" > < / a > socket_addr.address.address = INADDR_ANY;
< a name = "l1438" > < / a >
< a name = "l1439" > < / a > current = info;
< a name = "l1440" > < / a > < / span > < span class = cF1 > while< / span > < span class = cF0 > (current)
< a name = "l1441" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l1442" > < / a >
< a name = "l1443" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (current-> family == AF_INET & & < / span > < span class = cF7 > (< / span > < span class = cF0 > current-> socket_type == < / span > < span class = cFE > 0< / span > < span class = cF0 > || current-> socket_type == SOCKET_STREAM< / span > < span class = cF7 > )< / span > < span class = cF0 > )
< a name = "l1444" > < / a > { < / span > < span class = cF2 > // TODO: IPV6 support !< / span > < span class = cF0 >
< a name = "l1445" > < / a > socket_addr.address.address = < / span > < span class = cF5 > EndianU32< / span > < span class = cF0 > (current-> address< / span > < span class = cF7 > (< / span > < span class = cF0 > CSocketAddressIPV4 *< / span > < span class = cF7 > )< / span > < span class = cF0 > -> address.address); < / span > < span class = cF2 > // ?? why are bits flipped here< / span > < span class = cF0 >
< a name = "l1446" > < / a > AddressInfoFree(info);
< a name = "l1447" > < / a >
< a name = "l1448" > < / a > result = TCPSocket(AF_INET);
< a name = "l1449" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (!result)
< a name = "l1450" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l1451" > < / a > NetErr(< / span > < span class = cF6 > " TCP CONNECTION CREATE: Failed to create new TCP Socket." < / span > < span class = cF0 > );
< a name = "l1452" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > < / span > < span class = cF3 > NULL< / span > < span class = cF0 > ;
< a name = "l1453" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l1454" > < / a > result-> timeout = TCP_TIMEOUT * < / span > < span class = cFE > 3< / span > < span class = cF0 > ; < / span > < span class = cF2 > // generous< / span > < span class = cF0 >
< a name = "l1455" > < / a > error = TCPSocketConnect(result, & socket_addr);
< a name = "l1456" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (error < < / span > < span class = cFE > 0< / span > < span class = cF0 > )
2021-11-05 09:06:09 +00:00
< a name = "l1457" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
2021-11-30 04:50:05 +00:00
< a name = "l1458" > < / a > NetErr(< / span > < span class = cF6 > " TCP CONNECTION CREATE: Failed to connect TCP Socket to address." < / span > < span class = cF0 > );
< a name = "l1459" > < / a > TCPSocketClose(result);
< a name = "l1460" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > error;
< a name = "l1461" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l1462" > < / a >
< a name = "l1463" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > result;
< a name = "l1464" > < / a > }
< a name = "l1465" > < / a >
< a name = "l1466" > < / a > current = current-> next;
< a name = "l1467" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l1468" > < / a >
< a name = "l1469" > < / a > NetErr(< / span > < span class = cF6 > " TCP CONNECTION CREATE: Failed to find a suitable address." < / span > < span class = cF0 > );
< a name = "l1470" > < / a >
< a name = "l1471" > < / a > AddressInfoFree(info);
< a name = "l1472" > < / a > < / span > < span class = cF1 > return< / span > < span class = cF0 > < / span > < span class = cF3 > NULL< / span > < span class = cF0 > ;
< a name = "l1473" > < / a >
< a name = "l1474" > < / a > }
2021-11-05 09:06:09 +00:00
< a name = "l1475" > < / a >
2021-11-30 04:50:05 +00:00
< a name = "l1476" > < / a > < / span > < span class = cF1 > U0< / span > < span class = cF0 > TCPTreeNodeRep(CTCPTreeNode *node)
< a name = "l1477" > < / a > {
< a name = "l1478" > < / a > CTCPTreeQueue *queue = node-> queue-> next;
< a name = "l1479" > < / a > CTCPSocket *socket;
< a name = "l1480" > < / a > CSocketAddressIPV4 *ipv4_addr;
< a name = "l1481" > < / a > CSocketAddressIPV6 *ipv6_addr;
< a name = "l1482" > < / a > < / span > < span class = cF1 > U8< / span > < span class = cF0 > *string;
< a name = "l1483" > < / a > CTCPAcceptQueue *pending;
< a name = "l1484" > < / a >
< a name = "l1485" > < / a >
< a name = "l1486" > < / a > < / span > < span class = cF6 > " Local Port $YELLOW$%d$FG$ (TCP Node @ $CYAN$0x%X$FG$):\n" < / span > < span class = cF0 > , node-> value, node;
< a name = "l1487" > < / a >
< a name = "l1488" > < / a > < / span > < span class = cF1 > while< / span > < span class = cF0 > (queue != node-> queue)
< a name = "l1489" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l1490" > < / a >
< a name = "l1491" > < / a > socket = queue-> socket;
2021-11-05 09:06:09 +00:00
< a name = "l1492" > < / a >
2021-11-30 04:50:05 +00:00
< a name = "l1493" > < / a > < / span > < span class = cF1 > switch< / span > < span class = cF0 > (socket-> destination_address.family)
< a name = "l1494" > < / a > {
< a name = "l1495" > < / a >
< a name = "l1496" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_UNSPEC:
< a name = "l1497" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
< a name = "l1498" > < / a >
< a name = "l1499" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_INET:
< a name = "l1500" > < / a > ipv4_addr = & socket-> destination_address;
< a name = "l1501" > < / a > string = < / span > < span class = cF5 > MStrPrint< / span > < span class = cF0 > (< / span > < span class = cF6 > " %d.%d.%d.%d" < / span > < span class = cF0 > ,
< a name = "l1502" > < / a > ipv4_addr-> address.address.u8[< / span > < span class = cFE > 3< / span > < span class = cF0 > ],
< a name = "l1503" > < / a > ipv4_addr-> address.address.u8[< / span > < span class = cFE > 2< / span > < span class = cF0 > ],
< a name = "l1504" > < / a > ipv4_addr-> address.address.u8[< / span > < span class = cFE > 1< / span > < span class = cF0 > ],
< a name = "l1505" > < / a > ipv4_addr-> address.address.u8[< / span > < span class = cFE > 0< / span > < span class = cF0 > ]); < / span > < span class = cF2 > // todo: kludge, endianness...< / span > < span class = cF0 >
< a name = "l1506" > < / a >
< a name = "l1507" > < / a > < / span > < span class = cF6 > " < / span > < span class = cF0 > < / span > < span class = cF6 > $BROWN$%s$FG$ Destination Port $YELLOW$%d$FG$ (TCP Tree Queue @ $CYAN$0x%X$FG$):\n" < / span > < span class = cF0 > ,
< a name = "l1508" > < / a > string, < / span > < span class = cF5 > EndianU16< / span > < span class = cF0 > (ipv4_addr-> port), queue;
< a name = "l1509" > < / a > < / span > < span class = cF5 > Free< / span > < span class = cF0 > (string);
< a name = "l1510" > < / a >
< a name = "l1511" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
< a name = "l1512" > < / a >
< a name = "l1513" > < / a > < / span > < span class = cF1 > case< / span > < span class = cF0 > AF_INET6:
< a name = "l1514" > < / a > ipv6_addr = & socket-> destination_address;
< a name = "l1515" > < / a >
< a name = "l1516" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
2021-07-05 01:12:38 +01:00
< a name = "l1517" > < / a >
2021-11-30 04:50:05 +00:00
< a name = "l1518" > < / a > < / span > < span class = cF1 > default< / span > < span class = cF0 > :
< a name = "l1519" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
< a name = "l1520" > < / a >
< a name = "l1521" > < / a > }
2021-11-05 09:06:09 +00:00
< a name = "l1522" > < / a >
2021-11-30 04:50:05 +00:00
< a name = "l1523" > < / a > < / span > < span class = cF6 > " < / span > < span class = cF0 > < / span > < span class = cF6 > Timeout: %dms\n" < / span > < span class = cF0 > , socket-> timeout;
2021-11-05 09:06:09 +00:00
< a name = "l1524" > < / a >
2021-11-30 04:50:05 +00:00
< a name = "l1525" > < / a > pending = socket-> accept_queue-> next;
< a name = "l1526" > < / a >
< a name = "l1527" > < / a > < / span > < span class = cF1 > while< / span > < span class = cF0 > (pending != socket-> accept_queue-> next)
< a name = "l1528" > < / a > {
< a name = "l1529" > < / a > < / span > < span class = cF6 > " < / span > < span class = cF0 > < / span > < span class = cF6 > Pending connection from $BROWN$%d.%d.%d.%d$FG$:" < / span > < span class = cF0 > ,
< a name = "l1530" > < / a > pending-> ipv4_address.u8[< / span > < span class = cFE > 3< / span > < span class = cF0 > ],
< a name = "l1531" > < / a > pending-> ipv4_address.u8[< / span > < span class = cFE > 2< / span > < span class = cF0 > ],
< a name = "l1532" > < / a > pending-> ipv4_address.u8[< / span > < span class = cFE > 1< / span > < span class = cF0 > ],
< a name = "l1533" > < / a > pending-> ipv4_address.u8[< / span > < span class = cFE > 0< / span > < span class = cF0 > ]; < / span > < span class = cF2 > //todo: kludge, endianness?< / span > < span class = cF0 >
< a name = "l1534" > < / a >
< a name = "l1535" > < / a > pending = pending-> next;
< a name = "l1536" > < / a > }
< a name = "l1537" > < / a >
< a name = "l1538" > < / a >
< a name = "l1539" > < / a > queue = queue-> next;
< a name = "l1540" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
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< a name = "l1541" > < / a >
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< a name = "l1542" > < / a > < / span > < span class = cF6 > " \n" < / span > < span class = cF0 > ;
< a name = "l1543" > < / a > }
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< a name = "l1544" > < / a >
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< a name = "l1545" > < / a > < / span > < span class = cF1 > U0< / span > < span class = cF0 > TCPRep()
< a name = "l1546" > < / a > {
< a name = "l1547" > < / a > CTCPTreeNode *node = tcp_globals.bound_socket_tree;
< a name = "l1548" > < / a > CTCPRepEntry *head;
< a name = "l1549" > < / a > CTCPRepEntry *entry;
< a name = "l1550" > < / a > CTCPRepEntry *temp_entry;
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< a name = "l1551" > < / a >
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< a name = "l1552" > < / a > < / span > < span class = cF6 > " $LTBLUE$TCP Report:$FG$\n\n" < / span > < span class = cF0 > ;
< a name = "l1553" > < / a >
< a name = "l1554" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (node)
< a name = "l1555" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l1556" > < / a > head = < / span > < span class = cF5 > CAlloc< / span > < span class = cF0 > (< / span > < span class = cF1 > sizeof< / span > < span class = cF7 > (< / span > < span class = cF0 > CTCPRepEntry< / span > < span class = cF7 > )< / span > < span class = cF0 > );
< a name = "l1557" > < / a > < / span > < span class = cF5 > QueueInit< / span > < span class = cF0 > (head); < / span > < span class = cF2 > // no QueueRemove the head< / span > < span class = cF0 >
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< a name = "l1558" > < / a >
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< a name = "l1559" > < / a > entry = < / span > < span class = cF5 > CAlloc< / span > < span class = cF0 > (< / span > < span class = cF1 > sizeof< / span > < span class = cF7 > (< / span > < span class = cF0 > CTCPRepEntry< / span > < span class = cF7 > )< / span > < span class = cF0 > );
< a name = "l1560" > < / a > entry-> node = node;
< a name = "l1561" > < / a > < / span > < span class = cF5 > QueueInsert< / span > < span class = cF0 > (entry, head);
< a name = "l1562" > < / a >
< a name = "l1563" > < / a > < / span > < span class = cF2 > // perform depth-first-search while Entry Queue has nodes not fully visited.< / span > < span class = cF0 >
< a name = "l1564" > < / a > < / span > < span class = cF1 > while< / span > < span class = cF0 > (entry != head)
< a name = "l1565" > < / a > {
< a name = "l1566" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (entry-> node-> left)
< a name = "l1567" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 > < / span > < span class = cF2 > // if node has one, add an Entry for the left branch, continue loop.< / span > < span class = cF0 >
< a name = "l1568" > < / a > temp_entry = < / span > < span class = cF5 > CAlloc< / span > < span class = cF0 > (< / span > < span class = cF1 > sizeof< / span > < span class = cF7 > (< / span > < span class = cF0 > CTCPRepEntry< / span > < span class = cF7 > )< / span > < span class = cF0 > );
< a name = "l1569" > < / a > temp_entry-> node = entry-> node-> left;
< a name = "l1570" > < / a > < / span > < span class = cF5 > QueueInsertRev< / span > < span class = cF0 > (temp_entry, head);
< a name = "l1571" > < / a >
< a name = "l1572" > < / a > < / span > < span class = cF2 > // if left branch, but no right: toss early, now fully traveled.< / span > < span class = cF0 >
< a name = "l1573" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (!entry-> node-> right)
< a name = "l1574" > < / a > {
< a name = "l1575" > < / a > < / span > < span class = cF5 > QueueRemove< / span > < span class = cF0 > (entry);
< a name = "l1576" > < / a > TCPTreeNodeRep(entry-> node);
< a name = "l1577" > < / a > < / span > < span class = cF5 > Free< / span > < span class = cF0 > (entry);
< a name = "l1578" > < / a > }
< a name = "l1579" > < / a >
< a name = "l1580" > < / a > entry = temp_entry;
< a name = "l1581" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l1582" > < / a > < / span > < span class = cF1 > else< / span > < span class = cF0 > < / span > < span class = cF1 > if< / span > < span class = cF0 > (entry-> node-> right)
< a name = "l1583" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 > < / span > < span class = cF2 > // if no left, but right: add right to queue, pop Entry, Rep, set entry to right.< / span > < span class = cF0 >
< a name = "l1584" > < / a > temp_entry = < / span > < span class = cF5 > CAlloc< / span > < span class = cF0 > (< / span > < span class = cF1 > sizeof< / span > < span class = cF7 > (< / span > < span class = cF0 > CTCPRepEntry< / span > < span class = cF7 > )< / span > < span class = cF0 > );
< a name = "l1585" > < / a > temp_entry-> node = entry-> node-> right;
< a name = "l1586" > < / a > < / span > < span class = cF5 > QueueInsertRev< / span > < span class = cF0 > (temp_entry, head);
< a name = "l1587" > < / a >
< a name = "l1588" > < / a > < / span > < span class = cF5 > QueueRemove< / span > < span class = cF0 > (entry);
< a name = "l1589" > < / a > TCPTreeNodeRep(entry-> node);
< a name = "l1590" > < / a > < / span > < span class = cF5 > Free< / span > < span class = cF0 > (entry);
< a name = "l1591" > < / a >
< a name = "l1592" > < / a > entry = temp_entry;
< a name = "l1593" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l1594" > < / a > < / span > < span class = cF1 > else< / span > < span class = cF0 >
< a name = "l1595" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 > < / span > < span class = cF2 > // pop Entry, Rep, if last Entry in Queue has right add it, pop & Rep travelled Entry, entry = right.< / span > < span class = cF0 >
< a name = "l1596" > < / a > < / span > < span class = cF5 > QueueRemove< / span > < span class = cF0 > (entry);
< a name = "l1597" > < / a > TCPTreeNodeRep(entry-> node);
< a name = "l1598" > < / a > < / span > < span class = cF5 > Free< / span > < span class = cF0 > (entry);
< a name = "l1599" > < / a >
< a name = "l1600" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (head-> last != head)
< a name = "l1601" > < / a > {
< a name = "l1602" > < / a > temp_entry = head-> last;
< a name = "l1603" > < / a >
< a name = "l1604" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (temp_entry-> node-> right)
< a name = "l1605" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l1606" > < / a > entry = temp_entry;
< a name = "l1607" > < / a >
< a name = "l1608" > < / a > temp_entry = < / span > < span class = cF5 > CAlloc< / span > < span class = cF0 > (< / span > < span class = cF1 > sizeof< / span > < span class = cF7 > (< / span > < span class = cF0 > CTCPRepEntry< / span > < span class = cF7 > )< / span > < span class = cF0 > );
< a name = "l1609" > < / a > temp_entry-> node = entry-> node-> right;
< a name = "l1610" > < / a > < / span > < span class = cF5 > QueueInsertRev< / span > < span class = cF0 > (temp_entry, head);
< a name = "l1611" > < / a >
< a name = "l1612" > < / a > < / span > < span class = cF5 > QueueRemove< / span > < span class = cF0 > (entry);
< a name = "l1613" > < / a > TCPTreeNodeRep(entry-> node);
< a name = "l1614" > < / a > < / span > < span class = cF5 > Free< / span > < span class = cF0 > (entry);
< a name = "l1615" > < / a >
< a name = "l1616" > < / a > entry = temp_entry;
< a name = "l1617" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l1618" > < / a > < / span > < span class = cF1 > else< / span > < span class = cF0 >
< a name = "l1619" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l1620" > < / a > < / span > < span class = cF5 > QueueRemove< / span > < span class = cF0 > (temp_entry);
< a name = "l1621" > < / a > TCPTreeNodeRep(temp_entry-> node);
< a name = "l1622" > < / a > < / span > < span class = cF5 > Free< / span > < span class = cF0 > (temp_entry);
< a name = "l1623" > < / a >
< a name = "l1624" > < / a > entry = head-> last;
< a name = "l1625" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l1626" > < / a > }
< a name = "l1627" > < / a > < / span > < span class = cF1 > else< / span > < span class = cF0 >
< a name = "l1628" > < / a > < / span > < span class = cF1 > break< / span > < span class = cF0 > ;
< a name = "l1629" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l1630" > < / a > }
< a name = "l1631" > < / a >
< a name = "l1632" > < / a > < / span > < span class = cF5 > Free< / span > < span class = cF0 > (head);
< a name = "l1633" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l1634" > < / a > < / span > < span class = cF1 > else< / span > < span class = cF0 >
< a name = "l1635" > < / a > < / span > < span class = cF6 > " No TCP Sockets currently bound.\n\n" < / span > < span class = cF0 > ;
< a name = "l1636" > < / a > }
< a name = "l1637" > < / a >
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< a name = "l1638" > < / a >
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< a name = "l1639" > < / a > TCPGlobalsInit;
< / span > < / pre > < / body >
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< / html >
