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Re: [lwip-users] TCP 2.0.2 pcb->snd_nxt is not updated somewhere?
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From: |
basi |
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Subject: |
Re: [lwip-users] TCP 2.0.2 pcb->snd_nxt is not updated somewhere? |
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Date: |
Sat, 19 Aug 2017 22:41:35 -0700 (MST) |
Hi Simonas,
Did you find the cause of this issue?
I'm also getting the same failure with lwIP 2.0.2 + FreeRTOS + netconn APIs
for implementing a webserver.
The first connection is successful and subsequent connections are failing at
following at check TCP_SEQ_BETWEEN in tcp_process.
case SYN_RCVD:
if (flags & TCP_ACK) {
/* expected ACK number? */
if (TCP_SEQ_BETWEEN(ackno, pcb->lastack+1, pcb->snd_nxt)) {
The wireshark trace shows that, even for the first connection, the ACK for
'GET HTTP/1.1' is coming out of order; i mean after FIN/ACK from client.
Trace file attached..
01_g55.pcapng <http://lwip.100.n7.nabble.com/file/n30514/01_g55.pcapng>
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