what is HTTP_VIA?

[PepperPepsi]

hi,<br><br>does anyone know what is HTTP_VIA? i only know that it is one of the ALL_HTTP Variable<br><br><br>thanks<br>PepperPepsi

 

[Karl Blessing]

are you sure, otherwise it would have been listed in the MSDN. under ServerVariables <p>Karl<br><a href=mailto:kb244@kb244.com>kb244@kb244.com</a><br><a href=

http://kb244.com>

</a><br>Experienced in : C++(both VC++ and Borland),VB1(dos) thru VB6, Delphi 3 pro, HTML, Visual InterDev 6(ASP(WebProgramming/Vbscript)<br>

http://www.brainbench.com/transcript.jsp?pid=629151

 

[jfriestman]

This code will generate a list of all the Server Variables.&nbsp;&nbsp;I don't see any mention of an HTTP_VIA and I've never heard of this variable.<br><br>&lt;TABLE border=1 width=&quot;100%&quot;&gt;<br>&lt;TR&gt;&lt;TD&gt;&lt;B&gt;Server Variable&lt;/B&gt;&lt;/TD&gt;&lt;TD&gt;&lt;B&gt;Value&lt;/B&gt;&lt;/TD&gt;&lt;/TR&gt;<br>&lt;% For Each name In Request.ServerVariables %&gt; <br>&lt;TR&gt;&lt;TD&gt; &lt;%= name %&gt; &lt;/TD&gt;&lt;TD&gt;&nbsp;&nbsp;&lt;%= Request.ServerVariables(name) %&gt; &lt;/TD&gt;&lt;/TR&gt;<br>&lt;% Next %&gt; <br>&lt;/TABLE&gt;<br><br>This url on your IIS 4.0 server will give you a list of all the variables along with their meanings.&nbsp;&nbsp;And again, HTTP_VIA isn't mentioned.<br><br><A HREF="

http://localhost/iishelp/iis/htm/asp/intr5vsj.htm"

TARGET="_new">

http://localhost/iishelp/iis/htm/asp/intr5vsj.htm</A><br><br>

<p> Jeff Friestman<br><a href=mailto: > </a><br><a href=

http://www.brainbench.com/transcript.jsp?pid=61192>

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[PepperPepsi]

Hi, this is what appear in one of my visitor's ALL_HTTP<br><br>HTTP_ACCEPT:image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, image/png, */* HTTP_ACCEPT_LANGUAGE:de HTTP_CONNECTION:keep-alive HTTP_HOST:<A HREF="

http://www.gefmus.com"

TARGET="_new">

http://www.gefmus.com</A>

HTTP_USER_AGENT:Mozilla/4.7 [de] (WinNT) HTTP_VIA:1.0 proxy1.gefm.eur.deuba.com:3128 (Squid/2.2.STABLE5/db2.0), 1.0 proxy.gate.eur.deuba.com:3128 (Squid/2.2.4) HTTP_ACCEPT_ENCODING:gzip HTTP_X_FORWARDED_FOR:unknown, unknown HTTP_CACHE_CONTROL:max-age=259200 <br><br>as you can see the HTTP_VIA: 1.0 proxy1.gefm.eur.debuba.com:3128<br>is that a domain name or something?<br><br>thanks<br>Chiu

 

[Karl Blessing]

What version of IIS are you using? <p>Karl<br><a href=mailto:kb244@kb244.com>kb244@kb244.com</a><br><a href=

http://kb244.com>

</a><br>Experienced in : C++(both VC++ and Borland),VB1(dos) thru VB6, Delphi 3 pro, HTML, Visual InterDev 6(ASP(WebProgramming/Vbscript)<br>

http://www.brainbench.com/transcript.jsp?pid=629151

 

[PepperPepsi]

Karl,<br><br>I'm using IIS version 5<br><br>Chiu

 

[Karl Blessing]

Have you tried looking in your own MSDN, or MSDN online? <p>Karl<br><a href=mailto:kb244@kb244.com>kb244@kb244.com</a><br><a href=

http://kb244.com>

</a><br>Experienced in : C++(both VC++ and Borland),VB1(dos) thru VB6, Delphi 3 pro, HTML, Visual InterDev 6(ASP(WebProgramming/Vbscript)<br>

http://www.brainbench.com/transcript.jsp?pid=629151

 

[jfriestman]

I searched several sites on the Internet and this is what I came up with<br><br>&nbsp;- HTTP_VIA seems to be information regarding proxy servers that forward the client's request along the wire.<br><br>&nbsp;- It becomes different in the case of multiple hops - the VIA field is supposed to have an entry from each proxy along the way, like a netnews Path: header.<br><br>&nbsp;- If the web browser proxies are setup it is the name and version of the web cache.<br><br>&nbsp;- Basically, if you see this environment variable in the ALL_HTTP, then you know your client/user is using a Proxy server.&nbsp;&nbsp;The name of the proxy server will show up here.<br><br>Hope this helps.<br> <p> Jeff Friestman<br><a href=mailto: > </a><br><a href=

http://www.brainbench.com/transcript.jsp?pid=61192>

View my Brainbench transcript</a><br>Brainbench 'Most Valuable Professional' for ASP<br>
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