Configuring HAProxy for WebSocket

A lot of peoples (including myself at Wordnik) needed to configure HAProxy in order to make WebSocket working. For my Atmosphere Framework project, I’m using:

$ cat /etc/haproxy/haproxy.cfg
global
    maxconn     4096 # Total Max Connections. This is dependent on ulimit
    nbproc      1

defaults
    mode        http

frontend all 0.0.0.0:80
    timeout client 86400000
    default_backend www_backend
    acl is_websocket hdr(Upgrade) -i WebSocket
    acl is_websocket hdr_beg(Host) -i ws

    use_backend socket_backend if is_websocket

backend www_backend
    balance roundrobin
    option forwardfor # This sets X-Forwarded-For
    timeout server 30000
    timeout connect 4000
    server apiserver 127.0.0.1:8080 weight 1 maxconn 1024 check

backend socket_backend
    balance roundrobin
    option forwardfor # This sets X-Forwarded-For
    timeout queue 5000
    timeout server 86400000
    timeout connect 86400000
    server apiserver targetserver:7777 weight 1 maxconn 1024 check

Thanks to Matthias L. Jugel for sharing … see his use of Atmosphere at twimpact.com.

For any questions or to download Atmosphere Client and Server Framework, go to our main site, use our Google Group forum, follow the team or myself and tweet your questions there! You can also checkout the code on Github.

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