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* tcp_in.c: Fix for bug #19953 - correct TCP state machine when

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* receiving FIN+ACK in SYN_RECV state
This commit is contained in:
kieranm 2007-08-16 15:57:31 +00:00
parent 40ef282982
commit a6ca9aa306
1 changed files with 8 additions and 2 deletions
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10
src/core/tcp_in.c
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@ -568,14 +568,20 @@ tcp_process(struct tcp_pcb *pcb)
old_cwnd = pcb->cwnd; old_cwnd = pcb->cwnd;
/* If there was any data contained within this ACK, /* If there was any data contained within this ACK,
* we'd better pass it on to the application as well. */ * we'd better pass it on to the application as well. */
tcp_receive(pcb); accepted_inseq = tcp_receive(pcb);
pcb->cwnd = ((old_cwnd == 1) ? (pcb->mss * 2) : pcb->mss); pcb->cwnd = ((old_cwnd == 1) ? (pcb->mss * 2) : pcb->mss);
if ((flags & TCP_FIN) && accepted_inseq) {
tcp_ack_now(pcb);
pcb->state = CLOSE_WAIT;
}
} }
/* incorrect ACK number */ /* incorrect ACK number */
else { else {
/* send RST */ /* send RST */
tcp_rst(ackno, seqno + tcplen, &(iphdr->dest), &(iphdr->src), tcp_rst(ackno, seqno + tcplen, &(iphdr->dest), &(iphdr->src),
tcphdr->dest, tcphdr->src); tcphdr->dest, tcphdr->src);
} }
} }
break; break;