In my first case: Squid request: -MGET /cgi-bin/upload_status.cgi?uid=060950223627&files=:iso-27001-router-security-audit-checklist.xls&ok=1 HTTP/1.1 Accept: text/html, application/xhtml+xml, */* Referer: http://xyz/ Accept-Language: de-DE User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like Gecko Accept-Encoding: gzip, deflate Host: xyz X-Forwarded-For: unknown, unknown Cache-Control: max-age=0 Connection: keep-alive Webserver answer: [-MHTTP/1.1 200 OK Date: Mon, 25 Nov 2013 12:48:57 GMT Server: Apache/2.2.22 (Linux/SUSE) Expires: Mon, 26 Jul 1997 05:00:00 GMT Pragma: no-cache Keep-Alive: timeout=15, max=100 Connection: Keep-Alive Transfer-Encoding: chunked Content-Type: text/html > Squid send the first request again and again. Direct request without squid: Gm/GET /cgi-bin/upload_status.cgi?uid=318568766743&files=:aukirche.JPG&ok=1 HTTP/1.1 Accept: text/html, application/xhtml+xml, */* Referer: http://xyz/ Accept-Language: de-DE User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like Gecko Accept-Encoding: gzip, deflate Host: xyz DNT: 1 Connection: Keep-Alive Webserver answer: GmHTTP/1.1 200 OK Date: Tue, 26 Nov 2013 10:36:25 GMT Server: Apache/2.2.22 (Linux/SUSE) Expires: Mon, 26 Jul 1997 05:00:00 GMT Pragma: no-cache Keep-Alive: timeout=15, max=100 Connection: Keep-Alive Transfer-Encoding: chunked Content-Type: text/html >Website gets displayed. In my second case: Squid request: SGET / HTTP/1.1 Accept: text/html, application/xhtml+xml, */* Accept-Language: de-DE User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like Gecko Accept-Encoding: gzip, deflate If-Modified-Since: Tue, 26 Nov 2013 10:52:01 GMT DNT: 1 Host: xyz Pragma: no-cache X-Forwarded-For: unknown, unknown Cache-Control: max-age=259200 Connection: keep-alive > No answer from Host Direct request without squid: S GET / HTTP/1.1 Accept: text/html, application/xhtml+xml, */* Accept-Language: de-DE User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like Gecko Accept-Encoding: gzip, deflate Host: xyz If-Modified-Since: Tue, 26 Nov 2013 10:52:01 GMT DNT: 1 Connection: Keep-Alive > successful answer from Webserver. Kind regards marc -----Ursprüngliche Nachricht----- Von: Grooz, Marc (regio iT) [mailto:Marc.Grooz@xxxxxxxxxx] Gesendet: Dienstag, 26. November 2013 11:55 An: Kinkie Cc: squid-users@xxxxxxxxxxxxxxx Betreff: ##palin AW: [squid-users] #Can't access certain webpages Hi Kinkie, yes i made a capture but don't see the cause. I send you my traces. Kind regards. Marc -----Ursprüngliche Nachricht----- Von: Kinkie [mailto:gkinkie@xxxxxxxxx] Gesendet: Montag, 25. November 2013 15:45 An: Grooz, Marc (regio iT) Cc: squid-users@xxxxxxxxxxxxxxx Betreff: Re: #Can't access certain webpages On Mon, Nov 25, 2013 at 3:21 PM, Grooz, Marc (regio iT) <Marc.Grooz@xxxxxxxxxx> wrote: > Hi, > > Currently I use Squid 3.3.8 and I can't use/access two webservers thru squid. If I bypass squid this websites work great. > > One of this websites is a fileupload/download website with a generated downloadlink. When I upload a file I receive the following Squidlog Entrys: > > TCP_MISS/200 398 GET http://w.y.x.z/cgi-bin/upload_status.cgi? > . > . > TCP_MISS_ABORTED/000 0 GET http:// w.y.x.z/cgi-bin/upload_status.cgi? > TCP_MISS/200 398 GET http://w.y.x.z/cgi-bin/upload_status.cgi? > > And the downloadlink never gets generated. > > > In the second case you never get a webpage back from squid. If I use lynx from the commandline of the squid system the Webpage gets loaded. > With a tcpdump I see that if squid makes the request then the Webserver didn't answer. Well, this is consistent with the behavior in squid's logs. Have you tried accessing the misbehaving server from a client running on the squid box, and comparing the differences in the network traces? -- /kinkie
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