[Haskell-cafe] HTTP package freezes on Windows 7

[Phil]

On 16/03/2010 01:05, Phil wrote:
> Scrap my original query - the problem isn't as black & white as I 
> thought.
>
> The below works fine - I've changed the response type from json to 
> xml.... strange, but for some reason downloading json doesn't work.... 
> it's fine on Linux.
>
> I'm guessing this is more likely to be a Windows issue rather than a 
> Haskell issue - any ideas?

A bit more testing - this is not a Windows issue per se.  It seems to be 
a limitation of the HTTP library running on Windows.

I've ran what I consider to be identical commands (in terms of 
functional use, both perform a HTTP GET on the location given) in 
Haskell and Python from each of their consoles on the same computer.  
The Python one correctly returns exactly what the Haskell one does on 
Linux.  The Haskell on Windows just hangs.....

However as mentioned earlier SOME http requests do work from Haskell so 
I don't think it's a problem with my build of HTTP or Network libs.  The 
simplest example is to replace 'json' with 'xml' in the below query.  
The best guess I can make is that XML is deemed renderable, but for some 
reason JSON is considered to be binary/file data?

Can anyone confirm this behaviour.... I only have one 1 Windows PC, so I 
can't test on another machine.  If it is a wide problem, I reckon it 
warrants a bug ticket on the library.....

Logs from console below,

Phil

*Haskell / GHCI:*
Prelude Network.HTTP> do x <- (simpleHTTP $ getRequest 
"http://maps.google.com/maps/api/geocode/json?address=London&sensor=false") 
 >>= getResponseBody; print x
Loading package bytestring-0.9.1.5 ... linking ... done.
Loading package Win32-2.2.0.1 ... linking ... done.
Loading package array-0.3.0.0 ... linking ... done.
Loading package syb-0.1.0.2 ... linking ... done.
Loading package base-3.0.3.2 ... linking ... done.
Loading package mtl-1.1.0.2 ... linking ... done.
Loading package parsec-2.1.0.1 ... linking ... done.
Loading package network-2.2.1.7 ... linking ... done.
Loading package old-locale-1.0.0.2 ... linking ... done.
Loading package old-time-1.0.0.3 ... linking ... done.
Loading package HTTP-4000.0.9 ... linking ... done.

--- Just sits here chewing up processor time and memory.....

*Python:*
 >>> print 
urllib.urlopen("http://maps.google.com/maps/api/geocode/json?address=London&sensor=false").read()
{
   "status": "OK",
   "results": [ {
     "types": [ "locality", "political" ],
     "formatted_address": "Westminster, London, UK",
     "address_components": [ {
       "long_name": "London",
       "short_name": "London",
       "types": [ "locality", "political" ]
     }, {
       "long_name": "Westminster",
       "short_name": "Westminster",
       "types": [ "administrative_area_level_3", "political" ]
     }, {
       "long_name": "Greater London",
       "short_name": "Gt Lon",
       "types": [ "administrative_area_level_2", "political" ]
     }, {
       "long_name": "England",
       "short_name": "England",
       "types": [ "administrative_area_level_1", "political" ]
     }, {
       "long_name": "United Kingdom",
       "short_name": "GB",
       "types": [ "country", "political" ]
     } ],
     "geometry": {
       "location": {
         "lat": 51.5001524,
         "lng": -0.1262362
       },
       "location_type": "APPROXIMATE",
       "viewport": {
         "southwest": {
           "lat": 51.4862583,
           "lng": -0.1582510
         },
         "northeast": {
           "lat": 51.5140423,
           "lng": -0.0942214
         }
       },
       "bounds": {
         "southwest": {
           "lat": 51.4837180,
           "lng": -0.1878940
         },
         "northeast": {
           "lat": 51.5164655,
           "lng": -0.1099780
         }
       }
     }
   } ]
}

 >>>








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