<p></p>
<p>You are right, this is an inbound connection.<br>
details in attached PCAP.<br>
<a href="https://github.com/kamailio/kamailio/files/6083218/haproxy-stuck.pcapng.gz">haproxy-stuck.pcapng.gz</a></p>
<p>What is strange here</p>
<ol>
<li>after packet <code>#2</code> must be <code>TCP/ACK</code> packet. This packet does not exist. We have a half-open TCP connection.</li>
<li>packet <code>#7</code> has RST flag (client want reset connection), <code>ACK</code> - flag (connection established now), Sequence number: 1361    - the client sent data in unseen packets (this not received).</li>
<li>And there no more packets from the client.</li>
</ol>

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