apmailist@xxxxxxx wrote:
Hi, I encounter An "invalid Response" on a particular site. This is what I get from squid : -------------------------- The requested URL could not be retrieved While trying to process the request: GET /nms/jsp/webForm.jsp?fo=bl&id=S7Nn7isL2GdroOkABgb1B35boKb4Z2SiMGMFGb/VEkJUIAIA HTTP/1.1 Host: somesite.com User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.9) Gecko/20071025 Firefox/2.0.0.9 Accept: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5 Accept-Language: en,en-us;q=0.7,fr-fr;q=0.3 Accept-Encoding: gzip,deflate Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7 Keep-Alive: 300 Proxy-Connection: keep-alive Proxy-Authorization: Basic Y<snip>8= -------------------------- relaxed_header_parser value is at "warning". I had a look at the headers, but couldn't find anything peculiar. But I'm not an expert in this field. Cache.log has said (I'm not 200% sure if it is related or not : 2007/11/05 16:11:53| ctx: enter level 30: '!ê«@' 2007/11/05 16:11:53| ctx: enter level 31: 'http://somesite.com/favicon.ico' 2007/11/05 16:11:53| ctx: enter level 32: 'http://somesite.com/favicon.ico' 2007/11/05 16:11:53| # ctx: suspiciously deep (32) nesting: With Log_mime_headers on , I have 1194278039.445 135 10.7.85.46 TCP_MISS/502 1996 GET http://somesite.com/nms/jsp/webForm.jsp? user-andrew DIRECT/213.139.xxx.xxx text/html [Host: somesite.com\r\nUser-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.9) Gecko/20071025 Firefox/2.0.0.9\r\nAccept: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5\r\nAccept-Language: en,en-us;q=0.7,fr-fr;q=0.3\r\nAccept-Encoding: gzip,deflate\r\nAccept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7\r\nKeep-Alive: 300\r\nProxy-Connection: keep-alive\r\nProxy-Authorization: Basic YXsnipcm8=\r\nPragma: no-cache\r\nCache-Control: no-cache\r\n] [HTTP/1.0 502 Bad Gateway\r\nServer: squid\r\nDate: Mon, 05 Nov 2007 15:53:59 GMT\r\nContent-Type: text/html\r\nContent-Length: 1740\r\nExpires: Mon, 05 Nov 2007 15:53:59 GMT\r\nX-Squid-Error: ERR_INVALID_RESP 0\r\n\r] Two tcpdumps, one from the squid server, another one from another internet access point, show strange characters just between the headers and the html stanza. See the "5ea" , then the "1" , and the "0". But this is through Wireshark and I'm not sure about the exactness.
Wireshark is exact to the bit.
-------------------------- GET /nms/jsp/webForm.jsp?fo=bl&id=S7Nn9L2GdroOkABgb1B35boKb4Z2SiMGMFGb/VEkJUIAIA HTTP/1.1 Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */* Accept-Language: fr UA-CPU: x86 Accept-Encoding: gzip, deflate User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.0.3705; .NET CLR 1.1.4322; Media Center PC 4.0; .NET CLR 2.0.50727) Host: somesite.com Connection: Keep-Alive HTTP/1.1 200 OK Date: Tue, 06 Nov 2007 04:42:03 GMT Server: Apache/2.0.52 (Red Hat) Transfer-Encoding: chunked
For starters the server is broken and throwing object that squid can't handle back at squid. Chunked encoding must not be sent to a HTTP/1.0 client. IIRC there was one aborted 2.6 release of squid that tried to cope, but that was reverted out from main due to problems. Henrik would know more on that.
Check you are running a recent 2.6 stable. Amos
