[Chameleon] proxy problems..

[uli mueller]

Jeremy

seems this is a similar problem we faced some time ago. We had this only 
with Internet Explorer and only with HTTP1.1 (not with HTTP1.0). I 
attach my last message on this subject.

Cheers, Uli


 > Okay, solved - although I do not quite understand the mechanisms behind!
 >
 > Obviously my problem was similar to the one described here:
 > http://www.maptools.org/bugzilla/show_bug.cgi?id=893. The bug is not
 > resolved but a work-around is proposed:
 >
 > Instead of assigning drawmap.php as an image source we changed the
 > chameleon source code in order to save the image first to a file.  Then
 > we assign the url of the file to the client's image.src.
 >
 > I would still be interested if anyone has an idea why this all
 > happened!? Especially why it happened only in IE and only with HTTP/1.1?
 >
 > Thanks to everyone who contributed!
 >
 > Cheers, Uli

Julien-Samuel Lacroix wrote:
> What did you comment out to make it work?
> 
> When viewed from the web, the drawmap URL works?
> 
> Julien
> 
> Sears, Jeremy wrote:
> 
>> Hi Julien,
>>
>> ok, here are what I get for variables:
>>
>>> From LAN, works:
>>
>> var gMapDHTMLURL =
>> '/myspace/chameleon//common//wrapper/drawmap.php?map_session_mode=1&run_quer 
>>
>> y=0&sid=441ed6567f126&dummy=0.44188400+1142871639';
>>
>>> From WAN, doesnt work:
>>
>> var gMapDHTMLURL =
>> '/myspace/chameleon//common//wrapper/drawmap.php?map_session_mode=1&run_quer 
>>
>> y=0&sid=441ed7059161f&dummy=0.49006900+1142871814';
>>
>> .... they look to be the same?
>>
>> PhP error reporting is on E_ALL, no php errors are being reported ...
>>
>> Also, we noticed that when we comment-out the includes in our phtml file,
>> the mapimage and keymap will finally show up when viewed from the web...
>> eg:
>>
>> include "./tools/includes/cfs_ess_bar.php";  //problem
>>
>> these are including code to draw things like nav bars, headers and 
>> footers
>> on the same page as the map.\
>> It would seem that they are causing the map to fail when viewed from the
>> web. Again, there are no prbs when viewed from LAN.
>>
>> The gMapDHTMLURL var that is given when the map (sans includes in 
>> phtml) is
>> successfully viewed from the web is:
>>
>> '/natdist/chameleon//common//wrapper/drawmap.php?map_session_mode=1&run_quer 
>>
>> y=0&sid=441eda1b8ccef&dummy=0.45470900+1142872604';
>>
>> Thanks
>> Jeremy
>>
>>
>>
>>
>> -----Original Message-----
>> From: chameleon-bounces at lists.maptools.org
>> [mailto:chameleon-bounces at lists.maptools.org]On Behalf Of Julien-Samuel
>> Lacroix
>> Sent: March 20, 2006 10:54 AM
>> To: Sears, Jeremy
>> Cc: 'chameleon at lists.maptools.org'
>> Subject: Re: [Chameleon] proxy problems..
>>
>>
>> Hi,
>> If you do a "View Source" in your browser, you will get the URL to 
>> your drawmap.php in a JS variable.
>> var gMapDHTMLURL = 'http://.../drawmap.php...'
>>
>> If you copy paste that in another window, you will get what is return 
>> by the server. Try it when it works and when it don't. When it don't 
>> work, you will probably get a mapfile error or a session error. We 
>> will try to investigate from there. Don't forget to set you php.ini to 
>> show all errors:
>> error_reporting  =  E_ALL
>>
>> Julien
>>
>> Sears, Jeremy wrote:
>>
>>> Hi all,
>>> This email is related to a couple I posted last week seeking assistance
>>
>>
>> with
>>
>>> my chameleon install behind a proxy... I think the nature of the 
>>> issue (or
>>> at least how I understand it) has changed so I am posting a simmilar
>>> question ....
>>> I have a mapserver/chameleon application installed on one of our 
>>> networked
>>> servers. When I look at my application from behind our LAN, everything
>>
>>
>> works
>>
>>> fine. When I look at it from the web, the mapserver generated images 
>>> dont
>>> show up. A note on web access: Inorder to get to the server from WAN, 
>>> http
>>> requests go through a firewall/ proxy server. Obviously the server has a
>>> different name when one looks at its pages from WAN than from LAN.
>>> My entire ms4w/chameleon install is setup in a directory on the server
>>> simmillar to: d:/proxy/myspace/ms4w/ ..etc ..
>>>
>>> My application files are set up in a dir simmilar to:
>>> d:/proxy/myspace/webappfiles/
>>>
>>> I have made changes to the conf files so that this set-up works (for the
>>> most part).
>>>
>>> Ok, my application doesnt work from the web. However, all of chameleon's
>>> samples work perfectly from the web! My application is not overly
>>> dissimmilar to the chameleon samples. This makes me think that the issue
>>
>>
>> is
>>
>>> a small one, perhaps a line of code im my app, or an incorrectly
>>
>>
>> referenced
>>
>>> file. Can anyone who is more fammilliar with chameleon suggest what 
>>> might
>>
>>
>> be
>>
>>> goin on here? Im assuming that since cham's sample apps work fine, the
>>> problem is not with either of the http servers that a web client must 
>>> pass
>>> to get to the app, and likly in my chameleon setup.
>>> Im going to go line by line through my files, any thoughts on where I
>>
>>
>> should
>>
>>> be checking?
>>>
>>> Many Thanks
>>> Jeremy
>>>
>>>
>>> _______________________________________________
>>> Chameleon mailing list
>>> Chameleon at lists.maptools.org
>>> http://lists.maptools.org/mailman/listinfo/chameleon
>>
>>
>>
> 


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