Re: [squid-users] squid vport from wangwen on 2009-09-29 (squid-users)

From: wangwen <wangw330_at_126.com>
Date: Tue, 29 Sep 2009 15:39:46 +0800

----- Original Message -----
From: "Amos Jeffries" <squid3_at_treenet.co.nz>
To: "wangwen" <wangw330_at_126.com>
Cc: <squid-users_at_squid-cache.org>
Sent: Tuesday, September 29, 2009 12:51 PM
Subject: Re: [squid-users] squid vport

Thanks for your help!

> 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.

Sorry, I made a mistake. Host is the 192.168.24.198:88.

alter HTTP_Port as follow:
http_port 192.168.0.164:88 accel vhost defaultsite=192.168.24.198
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;.NETCLR
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

Now i did not use vport.
Above you said that the 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

In that case,the host should be 192.168.0.164:88
why Host is 192.168.24.198 isn't 192.168.0.164:88 ?

I also tested another two cases:

alter HTTP_Port as follow:
http_port 192.168.0.164:88 accel vport defaultsite=192.168.24.198
When Clients access http://192.168.0.164:88/rdims/index.jsp
HTTP request header which Squid sent to backend server is:

alter HTTP_Port as follow:
http_port 192.168.0.164:88 accel vport=8088 defaultsite=192.168.24.198
When Clients access http://192.168.0.164:88/rdims/index.jsp
HTTP request header which Squid sent to backend server is:

could you explain how the Host is set for me ? thank you.

>
> 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_at_126.com> 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
>
>
>> At last the vport must be used with vhost?
>
> I don't think so.
>
> Amos
>
Received on Tue Sep 29 2009 - 07:39:57 MDT

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