wcf rest starter kit HttpStageProcessingException - GetResponse timed out

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wcf rest starter kit HttpStageProcessingException - GetResponse timed out

Last post 06-04-2009 7:05 AM by ksirg. 2 replies.

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wcf rest starter kit HttpStageProcessingException - GetResponse timed out

05-20-2009, 4:10 PM

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8 point Member
ksirg
Member since 05-08-2007, 5:18 PM
Posts 6

Hi I have communication problem, I use HttpClient and send periodically (every 60 second) HttpGet message asynchronusly. But I get (to often) exception HttpStageProcessingException with message GetResponse timed out and I don't know why? The other strange thing is that when I open fiddler it starts working and this exception nerer occure

.My code Send Message

m_HttpClient.BeginSend(
                new HttpRequestMessage("GET", query), new AsyncCallback(AfterUserDashboardSince), m_HttpClient);

calback AfterUserDashboardSince looks :

1    private void AfterUserDashboardSince(IAsyncResult result)
2            {
3                
4                var client = result.AsyncState as HttpClient;
5    
6                
7                HttpResponseMessage resp=null;
8    
9                try
10               {
11                   
12                   using (resp = client.EndSend(result))
13                   {
14   
15                       resp.EnsureStatusIsSuccessful();
16   
17                       
18                       if (resp.Content.GetLength() > 2)
19                       {
20                           var statuses = resp.Content.ReadAsJsonDataContract<StatusesList>();
21   
22                          
23                           if ((statuses.Count > 0) && (StatusesUpdated != null))
24                           {
25                               //rise event
26                               StatusesUpdated(this, new StatusesLoadingEventArgs(statuses));
27                           }
28                       }
29                   }
30               }
31               catch (ArgumentOutOfRangeException aorEx)
32               {
33                   //rise event
34                   if (CommunicationError != null)
35                   {
36                       CommunicationError(this, new CommunicationErrorEventArgs(resp.StatusCode));
37                   }
38               }
39               catch (HttpStageProcessingException timeEx)
40               {
41                   
42                  //wtf
43               }
44               catch (Exception ex)
45               {
46                   //todo
47               }
48               
49           }

Filed under: exception HttpStageProcessingException wcf rest

Re: wcf rest starter kit HttpStageProcessingException - GetResponse timed out

05-28-2009, 4:32 PM

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90 point Member
randallt
Member since 02-11-2009, 4:53 PM
Posts 30

It's hard to say what is happening here without more details about the server. As a side note, if you're using this in a WinForms or WPF application, using SendAsync() and SendCompleted += handler might be easier than BeginSend.

Re: wcf rest starter kit HttpStageProcessingException - GetResponse timed out

06-04-2009, 7:05 AM

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8 point Member
ksirg
Member since 05-08-2007, 5:18 PM
Posts 6

I resolve this by locking the HttpClient object, when retrive response, and it worked

 var client = result.AsyncState as HttpClient;
HttpResponseMessage resp = null;
try
{
     lock (httpClientLock)
     {
          resp = client.EndSend(result);
     }

//code 
}

Filed under: wcf REST HttpStageProcessingException lock

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