Re: [squid-users] Did Anyone used ESI with squid ?

[Michal Pietrusinski <michal.pietrusinski@xxxxxxx>]

Nitesh,

I looked at the ESI specification and it says nothing about 
"set_rediredt" - it seems that "set_redirect" is an Akamai extension.

I looked at the source code of squid and found support only for the 
variables from the ESI specification:


from ESIVarState.cc:
    addVariable ("HTTP_ACCEPT_LANGUAGE", 20, new ESIVariableLanguage);
    addVariable ("HTTP_COOKIE", 11, new ESIVariableCookie);
    addVariable ("HTTP_HOST", 9, new ESIVariableHost);
    addVariable ("HTTP_REFERER", 12, new ESIVariableReferer);
    addVariable ("HTTP_USER_AGENT", 15, new ESIVariableUserAgent(*this));
    addVariable ("QUERY_STRING", 12, new ESIVariableQuery(uri));


Regards,
Michal



Nitesh Naik napisaÅ(a):
> Michal,
>
> Here is ESI code that I used .
>
> <table>
> <tr>
> <td colspan="2">
> <esi:try>
> <esi:attempt>
> <esi:include src="http://www.yahoo.com"/>
> </esi:attempt>
> <esi:except>
> <!--esi This spot is reserved for your company.s advertising. For more info
> <a href="www.yahoo.com"> click here </a> -->
> </esi:except>
> </esi:try>
> </td> </tr>
> </table>
> <esi:assign name="date_string" value="This is test"/>
> <esi:vars> $(date_string) </esi:vars>
>
>
> In access log of squid I get following error.
>
> 1110289050.099      0 255.255.255.255 TCP_DENIED/403 0 GET
> http://www.yahoo.com - NONE/- text/html
>
> Enabled access to all in squid.conf now I am getting following error.
>
> 1110351386.705    541 255.255.255.255 TCP_MISS/403 0 GET
> http://www.yahoo.com - ANY_PARENT/<originserver> text/html
>
>
> Is <esi:vars>$set_redirect('http://www.yahoo.com')</esi:vars> works for you
> ?
>
> Regards
> Nitesh Naik
>
>
>
>
> ----- Original Message ----- 
> From: "Michal Pietrusinski" <michal.pietrusinski@xxxxxxx>
> To: "Nitesh Naik" <nitesh@xxxxxxxx>
> Cc: <squid-users@xxxxxxxxxxxxxxx>
> Sent: Tuesday, March 08, 2005 8:34 PM
> Subject: Re: [squid-users] Did Anyone used ESI with squid ?
>
>
>
> > Hi Nitesh,
> >
> > I don't know if squid supports all ESI tags. I try to use only the basic
> > <esi:include> tag and have problems.
> >
> > Could you, please, check, if <esi:include> works with your installation?
> >
> > If it works fine, you should see the page properly composed, and in the
> > squid_installation/var/logs/access.log there should be entries, that the
> > template and included pages where taken from the cache.
> >
> > I would be very gratefull if you could do that test.
> >
> > Regards,
> > Michal
> >
> > Nitesh Naik napisaÅ(a):
> >
> > > Michal,
> > >
> > > Thanks for your suggestion.
> > >
> > > Changed parser to custom and used following sample ESI code.
> > >
> > > <esi:assign name="test_string" value="This is test"/>
> > > <esi:vars> $(test_string) </esi:vars>
> > >
> > > Its Working perfectly fine.  Is squid not supporting all ESI tags ?
> > >
> > > Regards
> > > Nitesh Naik
> > >
> > >
> > > ----- Original Message ----- 
> > > From: "Michal Pietrusinski" <michal.pietrusinski@xxxxxxx>
> > > To: "Nitesh Naik" <nitesh@xxxxxxxx>
> > > Cc: <squid-users@xxxxxxxxxxxxxxx>
> > > Sent: Tuesday, March 08, 2005 5:57 PM
> > > Subject: Re: [squid-users] Did Anyone used ESI with squid ?
> > >
> > >
> > >
> > >
> > > > Dear Nitesh,
> > > >
> > > > It looks like the header is ok, since ESI processing started. I also had
> > > > problems with parser 'libxml2' - it was constantly reporting some
> > > > parsing errors even on simple pages which were validated with W3C
> > >
> > > validator.
> > >
> > >
> > > > So finally I changed to 'custom' and 'expat' parsers.
> > > >
> > > > I suggest you first try some really simple ESI constructs with 'custom'
> > > > parser.
> > > >
> > > > Regards,
> > > > Michal
> > > >
> > > >
> > > >
> > > > Nitesh Naik napisaÅ(a):
> > > >
> > > >
> > > > > Dear Michal,
> > > > >
> > > > > Thanks for your reply.
> > > > >
> > > > > Let me send you some more information about settings that I am using.
> > > > >
> > > > > We are using squid squid-3.0-PRE3-20041220 for parsing ESI.  squid is
> > > > > compiled with esi ( --enable-esi ) but for some reason esi is not
> > >
> > > getting
> > >
> > >
> > > > > parsed and we get following error in the browser.
> > > > >
> > > > > The following error was encountered:
> > > > >
> > > > > ESI Processing failed.
> > > > > The ESI processor returned:
> > > > > esiProcess: Parse error at line 2: junk after document element
> > > > > This means that:
> > > > > The surrogate was not able to process the ESI template. Please report
> > >
> > > this
> > >
> > >
> > > > > error to the webmaster
> > > > >
> > > > > ESI example used
> > > > > <esi:assign name="date_string" value="$strftime($time(), '%a, %d %B %Y
> > > > > %H:%M:%S %Z')"/>
> > > > > <esi:vars>
> > > > > $(date_string)
> > > > > </esi:vars>
> > > > >
> > > > >
> > > > > squid.conf settings
> > > > >
> > > > >   httpd_accel_surrogate_id unset-id
> > > > >   http_accel_surrogate_remote on
> > > > >   esi_parser libxml2
> > > > >   cache_peer xyz.com parent 80 0 no-query originserver
> > > > >
> > > > > Apache configuration at origin server
> > > > >  <Directory /esi/>
> > > > >    Header add Surrogate-Control max-age=60,content="ESI/1.0"
> > > > >    ExpiresActive On
> > > > >    ExpiresByType text/html "now plus 1 minutes"
> > > > > </Directory>
> > > > >
> > > > >
> > > > > When we hit origin server the Surrogate-Control is added to header
> > > > >
> > > > > HTTP/1.1 200 OK
> > > > > Date: Fri, 04 Mar 2005 13:30:03 GMT
> > > > > Surrogate-Control: max-age=60,content="ESI/1.0"
> > > > > P3P: CP="NOI DSP COR CURa ADMa DEVa PSDa OUR BUS UNI COM NAV OTC",
> > > > > policyref="/w3c/p3p.xml"
> > > > > Last-Modified: Fri, 04 Mar 2005 12:50:06 GMT
> > > > > ETag: "13c8a1-133-4228597e"
> > > > > Accept-Ranges: bytes
> > > > > Content-Length: 307
> > > > > Connection: close
> > > > > Content-Type: text/html
> > > > >
> > > > > Regards
> > > > > Nitesh Naik
> > > > >
> > > > >
> > > > >
> > > > > ----- Original Message ----- 
> > > > > From: "Michal Pietrusinski" <michal.pietrusinski@xxxxxxx>
> > > > > To: <squid-users@xxxxxxxxxxxxxxx>
> > > > > Sent: Tuesday, March 08, 2005 5:26 PM
> > > > > Subject: Re: [squid-users] Did Anyone used ESI with squid ?
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > > > Dear Nitesh,
> > > > > >
> > > > > > I'm also trying to use ESI with squid - I installed Squid 3, (remember
> > > > > > to use --enable-esi with configure) and pages are composed fine (I use
> > > > > > <esi:include>), but templates and fragments are not cached.
> > > > > >
> > > > > > Remember that your pages must have appropriate HTTP headers in order
>
> to
>
> > > > > > make squid parsing it as ESI templates.
> > > > > >
> > > > > > I hope you are more lucky and will have your pages cached.
> > > > > >
> > > > > > Regards,
> > > > > > Michal Pietrusinski
> > > > > >
> > > > > >
> > > > > >
> > > > > > Nitesh Naik napisaÅ(a):
> > > > > >
> > > > > >
> > > > > >
> > > > > > > Hi,
> > > > > > >
> > > > > > > I am having problem with configuring squid with ESI parsing. Did
>
> anyone
>
> > > > > > > implemented it ?
> > > > > > >
> > > > > > >
> > > > > > > Regards
> > > > > > > Nitesh Naik