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[lwip-devel] [bug #45161] tcp.c / tcp_abandon / pcb->local_port set to z
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From: |
Dipl. Ing. Bernhard Weber |
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Subject: |
[lwip-devel] [bug #45161] tcp.c / tcp_abandon / pcb->local_port set to zero but needed later for tcp_rst |
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Date: |
Thu, 21 May 2015 12:36:18 +0000 |
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User-agent: |
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:38.0) Gecko/20100101 Firefox/38.0 |
Follow-up Comment #2, bug #45161 (project lwip):
the call stack is:
my software -> tcp_abort -> tcp_abandon -> tcp_rst
snipnet from tcp.c / void tcp_abandon(struct tcp_pcb *pcb, int reset)
if (send_rst) {
LWIP_DEBUGF(TCP_RST_DEBUG, ("tcp_abandon: sending RSTn"));
tcp_rst(seqno, ackno, &pcb->local_ip, &pcb->remote_ip, pcb->local_port,
pcb->remote_port);
}
The reason for calling this sequence ist another big problem, but i cannot
track it down to generate a good description.
It feels like: send big data chunks to a win7 x64 pc, 64k window and no data
is commited for at least 700ms -> calling tcp_abort (see above), wait for
reconnect from pc (7-10 ms later with valid local port number, duration
without valid local port: 200-1000ms) and resend all data to pc.
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