[Tilecache] 502 Proxy Error on localhost

[Gilles Bassière]

Hi Christopher,

Thanks for help. Below is a sample layer from my tilecache.cfg, all 
layers roughly have the same configuration (except layer name).

[orthophoto.png]
bbox=972032.5,144784.796875,982541.6875,152132.25
extension=png
layers=orthophoto
mime_type=image/png
resolutions=14.994802295918367, 7.49740114795918350000, 
3.74870057397959175000, 1.87435028698979587500, 0.93717514349489793750, 
0.46858757174744896875, 0.23429378587372448437, 0.11714689293686224218, 
0.05857344646843112109, 0.02928672323421556054, 0.01464336161710778027, 
0.00732168080855389013, 0.00366084040427694506, 0.00183042020213847253, 
0.00091521010106923626, 0.00045760505053461813
srs=EPSG:27563
type=WMS
url=http://localhost/geoserver/wms?transparent=true

Regards,
Gilles


Christopher Schmidt wrote:
> On Thu, Sep 25, 2008 at 05:18:31PM +0200, Gilles Bassière wrote:
>   
>> Hi list,
>>
>> I face a weird problem with TileCache on windows. The "basic" WMS layer 
>> works fine but I get a "502 Proxy Error" with WMS layers served from 
>> localhost. More details :
>> - The system is Windows XP version 2002 SP3 and Python is 2.5.2.
>> - WMS stream come from Geoserver 1.6.4 installed in Tomcat. Tomcat is 
>> connected to Apache through mod_jk.
>> - TileCache run in CGI mode.
>>
>> I said it's weird for two reasons. First there's no proxy on localhost, 
>> so why Apache complains about a proxy? Second, the WMS request failed on 
>> TileCache but worked great when sent straight to GeoServer, so is there 
>> something unusual in TileCache HTTP request?
>>     
>
> What is the "url" in your type=WMS configuration?
>
>   
>> Below is the stacktrace returned by TileCache when requesting tiles from 
>> local GeoServer :
>> An error occurred: HTTP Error 502: Proxy Error ( The specified network 
>> name is no longer available.  )
>>  File 
>> "C:\WEBMAPPING\apache\cgi-bin\TileCache-2.01\TileCache\Service.py", line 
>> 264, in cgiHandler
>>    format, image = service.dispatchRequest( params, path_info, 
>> req_method, host )
>>  File 
>> "C:\WEBMAPPING\apache\cgi-bin\TileCache-2.01\TileCache\Service.py", line 
>> 182, in dispatchRequest
>>    return self.renderTile(tile, params.has_key('FORCE'))
>>  File 
>> "C:\WEBMAPPING\apache\cgi-bin\TileCache-2.01\TileCache\Service.py", line 
>> 119, in renderTile
>>    data = layer.render(tile)
>>  File "C:\WEBMAPPING\apache\cgi-bin\TileCache-2.01\TileCache\Layer.py", 
>> line 250, in render
>>    image = self.renderMetaTile(metatile, tile)
>>  File "C:\WEBMAPPING\apache\cgi-bin\TileCache-2.01\TileCache\Layer.py", 
>> line 212, in renderMetaTile
>>    data = self.renderTile(metatile)
>>  File 
>> "C:\WEBMAPPING\apache\cgi-bin\TileCache-2.01\TileCache\Layers\WMS.py", 
>> line 20, in renderTile
>>    tile.data, response = wms.fetch()
>>  File 
>> "C:\WEBMAPPING\apache\cgi-bin\TileCache-2.01\TileCache\Client.py", line 
>> 46, in fetch
>>    response = self.client.open(urlrequest)
>>  File "C:\WEBMAPPING\python25\lib\urllib2.py", line 387, in open
>>    response = meth(req, response)
>>  File "C:\WEBMAPPING\python25\lib\urllib2.py", line 498, in http_response
>>    'http', request, response, code, msg, hdrs)
>>  File "C:\WEBMAPPING\python25\lib\urllib2.py", line 425, in error
>>    return self._call_chain(*args)
>>  File "C:\WEBMAPPING\python25\lib\urllib2.py", line 360, in _call_chain
>>    result = func(*args)
>>  File "C:\WEBMAPPING\python25\lib\urllib2.py", line 506, in 
>> http_error_default
>>    raise HTTPError(req.get_full_url(), code, msg, hdrs, fp)
>>
>> Does someone has experience to share regarding this issue?
>> Gilles
>>
>> -- 
>> Gilles Bassiere
>> MAKINA CORPUS
>> 30 rue des Jeuneurs
>> FR-75002 PARIS
>> +33 (0) 1 44 82 00 80
>> http://www.makina-corpus.com
>>
>>     
>
>   
>> begin:vcard
>> fn;quoted-printable:Gilles Bassi=C3=A8re
>> n;quoted-printable:Bassi=C3=A8re;Gilles
>> org:Makina Corpus;GIS
>> adr;quoted-printable:;;30 rue des Je=C3=BBneurs;Paris;;FR-75011;France
>> email;internet:gilles.bassiere at makina-corpus.com
>> title:Web GIS developper
>> tel;work:+33 (0) 1 44 82 00 80
>> x-mozilla-html:FALSE
>> url:http://www.makina-corpus.com
>> version:2.1
>> end:vcard
>>
>>     
>
>   
>> _______________________________________________
>> Tilecache mailing list
>> Tilecache at openlayers.org
>> http://openlayers.org/mailman/listinfo/tilecache
>>     
>
>
>   

-- 
Gilles Bassiere
MAKINA CORPUS
30 rue des Jeuneurs
FR-75002 PARIS
+33 (0) 1 44 82 00 80
http://www.makina-corpus.com

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