Note: If Henrik corrects me on any of this believe him. I'm a little bit fuzzy too. On Tue, 29 Sep 2009 11:50:49 +0800, "wangwen" <wangw330@xxxxxxx> wrote: > Hi All: > > The vport option Confused me for a long time. > what is the meaning of "vport" option in the "http_port"? > Can anyone give me an example to explain it, thank you. > > I did a test. > The Squid.conf as follows： > http_port 192.168.0.164:88 > accel defaultsite=192.168.24.198 > acl all src 0.0.0.0/0.0.0.0 > http_access allow all > cache_peer 192.168.24.198 parent 8088 0 no-query originserver > > When Clients access http://192.168.0.164:88/rdims/index.jsp > HTTP request header which Squid sent to backend server is: > > GET /rdims/index.jsp HTTP/1.0 > Accept: */* > Accept-Language: zh-cn > UA-CPU: x86 > Accept-Encoding: gzip, deflate > User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; SLCC1; .NET > CLR 2.0.50727; InfoPath.1; .NET CLR 3.5.30729; .NET CLR 3.0.30618) > Host: 192.168.24.198 > Via: 1.1 szrd.com:88 (squid/2.6.STABLE21) > X-Forwarded-For: 192.168.12.48 > Cache-Control: max-age=259200 > Connection: keep-alive > > My originserver port is 8088,Why HOST is 192.168.0.164, I think that the > HOST should be 92.168.24.198:8080. "accel defaultsite=192.168.24.198" by itself means... ... 'accelerate' the URL. ... use 192.168.24.198 as the Host: header content if no domain name present (in the URL). Client sent squid: GET /rdims/index.jsp HTTP/1.0 Host: 192.168.0.164:88 ... /rdims/index.jsp contains no domain name, so the defaultsite=192.168.24.198 set "Host: 192.168.24.198" > > I alter HTTP_Port as follow: > http_port 192.168.0.164:88 accel vhost defaultsite=192.168.24.198 vport > When Clients access http://192.168.0.164:88/rdims/index.jsp > HTTP request header which Squid sent to backend server is: > > GET /rdims/index.jsp HTTP/1.0 > Accept: */* > Accept-Language: zh-cn > UA-CPU: x86 > Accept-Encoding: gzip, deflate > User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; SLCC1; .NET > CLR 2.0.50727; InfoPath.1; .NET CLR 3.5.30729; .NET CLR 3.0.30618) > Host: 192.168.24.198:88 > Via: 1.1 szrd.com:88 (squid/2.6.STABLE21) > X-Forwarded-For: 192.168.12.48 > Cache-Control: max-age=259200 > Connection: keep-alive > > Now why the Host is 192.168.0.164:88? "accel vhost defaultsite=192.168.24.198 vport" means ... ... 'accelerate' the URL. ... (vhost) use client-given Host: header when available. ... (vport) use the client-given Host: HTTP port (default the peers listening port if none found). ... (defaultsite=) use 192.168.24.198 if neither of the above give a usable domain/IP. The client sends: Client sent squid: GET /rdims/index.jsp HTTP/1.0 Host: 192.168.0.164:88 So Squid check the URL. Finds /rdims/index.jsp. ... checks the Host: header. Finds 192.168.0.164:88, making URL=http://192.168.0.164:88/rdims/index.jsp ... checks the Host: header port. Finds 88, making URL=http://192.168.0.164:88/rdims/index.jsp ... has a domain '192.168.0.164', so skips defaultsite And passes on: GET /rdims/index.jsp HTTP/1.0 Host: 192.168.0.164:88 > > I alter HTTP_Port again: http_port 192.168.0.164:88 accel vhost > defaultsite=192.168.24.198 vport=8088 > When Clients access http://192.168.0.164:88/rdims/index.jsp > HTTP request header which Squid sent to backend server is: > > GET /rdims/index.jsp HTTP/1.0 > Accept: */* > Accept-Language: zh-cn > UA-CPU: x86 > Accept-Encoding: gzip, deflate > User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; SLCC1; .NET > CLR 2.0.50727; InfoPath.1; .NET CLR 3.5.30729; .NET CLR 3.0.30618) > Host: 192.168.24.198 > Via: 1.1 szrd.com:88 (squid/2.6.STABLE21) > X-Forwarded-For: 192.168.12.48 > Cache-Control: max-age=259200 > Connection: keep-alive > > Why the host is 192.168.0.164:88? ? its not. > I think that the HOST should be > 92.168.24.198:8088. "accel vhost defaultsite=192.168.24.198 vport=8080" means ... ... 'accelerate' the URL. ... (vhost) use client-given Host: header when available. ... (vport=) use the client-given Host: HTTP port (default 8088 if none found). ... (defaultsite=) use 192.168.24.198 if neither of the above give a usable domain/IP. So Squid check the URL. Finds /rdims/index.jsp. ... checks the Host: header. Finds 192.168.0.164:88, making URL=http://192.168.0.164:88/rdims/index.jsp ... checks the Host: header port. Finds 88, making URL=http://192.168.0.164:88/rdims/index.jsp ... has a domain '192.168.0.164', so skips defaultsite I think it should have been: "Host: 192.168.0.164:88" maybe something went wrong and caused defaultsite to be used. Henrik might know. > At last the vport must be used with vhost? I don't think so. Amos
