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Ingress TCP keep-alive with garbage byte support.

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likewise 2004-08-17 09:32:31 +00:00
parent 515fb5a3fd
commit b9ebcd7738
1 changed files with 6 additions and 1 deletions
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7
src/core/tcp_in.c
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@ -1162,6 +1162,11 @@ tcp_receive(struct tcp_pcb *pcb)
#endif /* TCP_QUEUE_OOSEQ */
}
} else {
if (TCP_SEQ_GT(pcb->rcv_nxt, seqno) ||
TCP_SEQ_GEQ(seqno, pcb->rcv_nxt + pcb->rcv_wnd)) {
tcp_ack_now(pcb);
}
}
} else {
/* Segments with length 0 is taken care of here. Segments that
@ -1201,7 +1206,7 @@ tcp_parseopt(struct tcp_pcb *pcb)
++c;
/* NOP option. */
} else if (opt == 0x02 &&
opts[c + 1] == 0x04) {
opts[c + 1] == 0x04) {
/* An MSS option with the right option length. */
mss = (opts[c + 2] << 8) | opts[c + 3];
pcb->mss = mss > TCP_MSS? TCP_MSS: mss;