Is ICY really listening on localhost:3128 ? If you telnet directly to that, does it work?
On 3/9/11 6:36 PM, David Young wrote:
Hi folks, First-time poster here - we've been working on implementing haproxy to perform load balancing between our backend squid proxies. I stumbled across an issue today when I realized that I can't listen to streaming radio via my haproxy instance, but that it works fine if I direct my request to one of by backend proxies directly. A bit of searching lead me to the issue of HTTP/1.1 vs ICY as the probable cause (http://www.squid-cache.org/Versions/v3/3.1/RELEASENOTES.html#ss2.10). I thought that if I configured haproxy in "mode tcp" instead of "mode http", that it'd behave more like a simple loadbalancer, and just pass the request onto my squid backend verbatim, but that doesn't seem to have worked either. An example URL I'm having trouble with is http://66.225.205.47/;stream.mp3 Even in "mode tcp", if I request that URL through by browser from haproxy, I get a 502 error, whereas if I requested it directly from the backend squid instance which services my request anyway, I get the expected headers and stream. I thought I'd try telnetting to the haproxy / squid ports respectively, to test, and I received differing output (below). Can anybody enlighten me? Many thanks, David -- Relevant haproxy.cfg -- #--------------------------------------------------------------------- # Global settings #--------------------------------------------------------------------- global log 127.0.0.1 local2 log /dev/log local2 chroot /var/lib/haproxy pidfile /var/run/haproxy.pid maxconn 4000 user haproxy group haproxy daemon #--------------------------------------------------------------------- # common defaults that all the 'listen' and 'backend' sections will # use if not designated in their block #--------------------------------------------------------------------- defaults mode http log global option dontlognull option http-server-close option httplog # Log on start of connection, not completion option logasap # log errors separately option log-separate-errors option forwardfor option redispatch timeout connect 10000 # default 10 second time out if a backend is not found timeout client 300000 timeout server 300000 maxconn 60000 retries 3 #--------------------------------------------------------------------- # main frontend which proxys to the backends #--------------------------------------------------------------------- frontend test_frontend *:5001 mode tcp option tcpka default_backend test_backend backend test_backend balance roundrobin server localhost localhost:3128 -- Telnet to haproxy infront of single squid tcp backend -- DavidBook:~ davidy$ telnet webscan-dev.blahblah.net 5001 Trying x.x.x.x... Connected to webscan-dev.blahblah.net. Escape character is '^]'. GET http://66.225.205.47/;stream.mp3 HTTP/1.0 502 Bad Gateway Cache-Control: no-cache Connection: close Content-Type: text/html <html><body><h1>502 Bad Gateway</h1> The server returned an invalid or incomplete response. </body></html> Connection closed by foreign host. DavidBook:~ davidy$ -- Telnet to squid directly -- DavidBook:~ davidy$ telnet webscan-dev.blahblah.net 3128 Trying x.x.x.x... Connected to webscan-dev.blahblah.net. Escape character is '^]'. GET http://66.225.205.47/;stream.mp3 ICY 200 OK Date: Thu, 10 Mar 2011 02:25:55 GMT icy-notice1:<BR>This stream requires<a href="http://www.winamp.com/";>Winamp</a><BR> icy-notice2: SHOUTcast Distributed Network Audio Server/Linux v1.9.8<BR> icy-name: Family Friendly WBGL icy-genre: Contemporary Christian icy-url: http://www.wbgl.org Content-Type: audio/mpeg icy-pub: 1 icy-br: 96 X-Cache: MISS from webscan-dev.blahblah.net X-Cache-Lookup: MISS from webscan-dev.blahblah.net:3128 Via: 0.0 webscan-dev.blahblah.net (squid/3.1.11) Connection: close 00/Ȯt?????sƸD?,?4A?Q`F??BA????B??@(???u??kTC???????<binary stream continues...>
