Hi, We have been trying to get the new keep-alive functionality, with the http-server-close option, to work with our Jetty back-end web servers. There seems to be something in the response from the Jetty servers that makes HaProxy always add a Connection: close header in the response to the client though.
Running the same HaProxy configuration with an Apache backend works fine. I've included examples below showing the requests and responses when going directly to the backend server, bypassing haproxy, and then the same request going through haproxy, for the Apache and Jetty backends. One obvious difference in the response from the Apache server is that it includes explicit keep-alive headers, but if I understand the matrix in the connection-header.txt (included in doc/internals) that shouldn't matter - as long as the Jetty server doesn't send a Connection: Close, includes a Content-Length header and both client and server use http/1.1 HaProxy should not add a Connection: Close header in the response to the client. Any ideas what might be causing our problems? Thank you, Patrik --------------- JETTY backend. --------------- Direct: ------- *Request* GET /res/jalogo.png HTTP/1.1 Host: jetty.jalbum.test User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.2) Gecko/20100115 Firefox/3.6 GTB6 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-us,en;q=0.5 Accept-Encoding: gzip,deflate Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7 Keep-Alive: 115 Connection: keep-alive Pragma: no-cache Cache-Control: no-cache *Response* HTTP/1.1 200 OK Date: Mon, 29 Mar 2010 15:32:10 GMT Expires: Tue, 30 Mar 2010 15:32:10 GMT Content-Type: image/png Cache-Control: max-age=86400 Last-Modified: Tue, 16 Mar 2010 10:55:16 GMT Accept-Ranges: bytes Content-Length: 7491 Server: Jetty(6.1.21) Through HaProxy: ---------------- *Request* GET /res/jalogo.png HTTP/1.1 Host: jalbum.test User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.2) Gecko/20100115 Firefox/3.6 GTB6 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-us,en;q=0.5 Accept-Encoding: gzip,deflate Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7 Keep-Alive: 115 Connection: keep-alive Pragma: no-cache Cache-Control: no-cache *Response* HTTP/1.1 200 OK Date: Mon, 29 Mar 2010 15:34:42 GMT Expires: Tue, 30 Mar 2010 15:34:42 GMT Cache-Control: max-age=86400 Content-Type: image/png Last-Modified: Tue, 16 Mar 2010 10:55:16 GMT Accept-Ranges: bytes Connection: close Server: Jetty(6.1.21) --------------- APACHE backend. --------------- Direct: ------- *Request* GET /gifs/green.gif HTTP/1.1 Host: apache.jalbum.test User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.2) Gecko/20100115 Firefox/3.6 GTB6 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-us,en;q=0.5 Accept-Encoding: gzip,deflate Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7 Keep-Alive: 115 Connection: keep-alive Pragma: no-cache Cache-Control: no-cache *Response* HTTP/1.1 200 OK Date: Mon, 29 Mar 2010 15:37:15 GMT Server: Apache/2.2.10 (Linux/SUSE) Last-Modified: Wed, 27 May 2009 15:02:43 GMT Etag: "de39-76-46ae622a36ac0" Accept-Ranges: bytes Content-Length: 118 Keep-Alive: timeout=15, max=100 Connection: Keep-Alive Content-Type: image/gif Through HaProxy: ---------------- *Request* GET /gifs/green.gif HTTP/1.1 Host: jalbum.test User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.2) Gecko/20100115 Firefox/3.6 GTB6 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-us,en;q=0.5 Accept-Encoding: gzip,deflate Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7 Keep-Alive: 115 Connection: keep-alive Pragma: no-cache Cache-Control: no-cache *Response* HTTP/1.1 200 OK Date: Mon, 29 Mar 2010 15:26:17 GMT Server: Apache/2.2.10 (Linux/SUSE) Last-Modified: Wed, 27 May 2009 15:02:43 GMT Etag: "de39-76-46ae622a36ac0" Accept-Ranges: bytes Content-Length: 118 Content-Type: image/gif
