SYN_ACK issue as r-proxy with SSL and non SSL vhosts

[espierre]

Hello,

  I have a reverse proxy serving both SSL and non SSL.

  When I serve a HTTPS host, SSL termination and forwarding works well. 

  When I serve a HTTP host, forwarding is lost in missing SYN_ACK.

  I've added default backlog=1024 on every listen to no success.

  Any hint ? idea ? 

O.S.: raspberry with debian, cubieboard2 with cubian
nginx: raspi: 1.2.1 / cubie: 1.6.0
http hosts behind: perl dancer, domoticz...

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,252020,252020#msg-252020