On Mon, Jun 22, 2009 at 1:14 AM, André Warnier <a...@ice-sa.com> wrote:
> Dmitri O.Kondratiev wrote: > >> Hello! >> I have the following problem: >> When using apache load balancer with Tomcat, *sometimes* responses get >> truncated , resulting in incomplete HTML of *wrong* encoding. My >> application >> that Tomcat runs always returns responses in utf-8, yet when truncated, >> page >> has a different encoding. >> >> The following combinations work: >> 1) IE -> Tomcat >> 2) IE -> Load Balancer -> Tomcat >> 3) WebLoad -> Tomcat >> >> The following returns truncated HTML: >> 1) WebLoad -> Load Balancer -> Tomcat >> >> Could Apache content negotiation be the reason for this error? >> Any other ideas why this could happen? >> >> Hi. > I can't answer, but just to save time for someone else who would like to > help you, could you specify : > - what platforms is (are) this ? > - what versions of Apache and Tomcat ? > - what do you use to connect Apache and Tomcat (mod_proxy_http, > mod_proxy_ajp, mod_jk, other ?) > - is Apache httpd configured to do any kind of caching ? > - what is "WebLoad" ? > - what do you mean by "page has a different encoding" ? How do you know > that ? Is the HTTP response "Content-type" header different ? Is a <meta> > tag in the page different ? > > (If you do not know the answer to that, search in Google for "Fiddler2". > That is an add-on for IE, which allows you to see exactly what requests go > from IE -> server, and the responses that go server -> IE. Including the > HTTP headers, body etc..). > > Also, to stop you maybe looking in the wrong place, I believe that Apache > content negociation only happens when you specify it explicitly, and it > should only happen for content that Apache itself can serve locally, not for > anything that is proxied somewhere else. > > Also, since according to your data below, it seems to be working fine in > Tomcat itself, and not working fine when Apache httpd is in front of it, you > may want to post this to the Apache httpd users list. > > > André and Martin, thanks for trying to help! Before sending to Tomcat list I asked the same question at Apache httpd users list. No comments so far :( As a guideline for load balancing I used an approach outlined here: http://www.theserverside.com/tt/knowledgecenter/knowledgecenter.tss?l=LoadBalancingTomcatApache Some more context on my problem: - Everything runs on Win32 - apache-tomcat-6.0.18 - Apache2.2 - mod_proxy_balancer - WebLoad - is used as load generation tool http://www.webload.org/ Here is a link<http://rapidshare.com/files/247362496/bad-response-data.zip.html> to a zip file with: - brokren response - appache & tomcat conf - Packets sniffed by WireShark (with and without balancer) http://www.wireshark.org/ I will try to provide more data on the problem later. Thanks!
