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lwip: fix socket close crash issue

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When lwip_close free the socket resource (netconn etc), any work
related to these resource (netconn etc) must be aborted.
This commit is contained in:
Liu Zhi Fu
2017-11-07 20:10:02 +08:00
committed by bot
parent e64b9ecaf4
commit 48ca949fd4
4 changed files with 58 additions and 12 deletions
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2
components/lwip/core/tcp_in.c
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@@ -721,6 +721,7 @@ tcp_process(struct tcp_pcb *pcb)
/* Do different things depending on the TCP state. */
switch (pcb->state) {
case SYN_SENT:
if (pcb->unacked) {
LWIP_DEBUGF(TCP_INPUT_DEBUG, ("SYN-SENT: ackno %"U32_F" pcb->snd_nxt %"U32_F" unacked %"U32_F"\n", ackno,
pcb->snd_nxt, ntohl(pcb->unacked->tcphdr->seqno)));
/* received SYN ACK with expected sequence number? */
@@ -752,6 +753,7 @@ tcp_process(struct tcp_pcb *pcb)
rseg = pcb->unacked;
pcb->unacked = rseg->next;
tcp_seg_free(rseg);
}
/* If there's nothing left to acknowledge, stop the retransmit
timer, otherwise reset it to start again */