arash rajaei arash rajaei - 4 months ago 61
Vb.net Question

System.Net.WebException: The operation has timed out

I have a complex code , in one section I send a rest webrequest to a web service and get its response for rest of job , the response have variant size , some times its heavy , on IIS Express on VS there isn't any problem but when going live on IIS it throw System.Net.WebException: The operation has timed out. and this is the code I use :

Dim req As HttpWebRequest = TryCast(WebRequest.Create("http://www.somedomain.com/service.svc"), HttpWebRequest)
Using TryCast(req, IDisposable)
req.Proxy = Nothing
req.ServicePoint.ConnectionLimit = 100
req.ServicePoint.MaxIdleTime = 3000000
req.Method = "POST"
req.Headers("Accept-Encoding") = "gzip,deflate"
req.ContentType = "application/soap+xml; charset=UTF-8"

If compressionRequested = True Then
'' if you want to receive compressed response

req.Headers.Add("Accept-Encoding", "gzip, deflate")
End If
Dim stOut As New StreamWriter(req.GetRequestStream(), System.Text.Encoding.ASCII)

stOut.Write(xml.ToString)
stOut.Close()


Using resp As HttpWebResponse = DirectCast(req.GetResponse(), HttpWebResponse)
If resp.ContentEncoding = "gzip" Then


Dim st As Stream = resp.GetResponseStream()
If resp.ContentEncoding.ToLower().Contains("gzip") Then
st = New System.IO.Compression.GZipStream(st, System.IO.Compression.CompressionMode.Decompress)
ElseIf resp.ContentEncoding.ToLower().Contains("deflate") Then
st = New System.IO.Compression.DeflateStream(st, System.IO.Compression.CompressionMode.Decompress)
End If
Dim bfst As BufferedStream = New BufferedStream(st)
Using stIn As New StreamReader(bfst, Encoding.[Default])
respXml = stIn.ReadToEnd()


stIn.Close()
End Using

Else
Using stIn As New StreamReader(resp.GetResponseStream())
respXml = stIn.ReadToEnd()

stIn.Close()
End Using
End If
End Using

End Using


also in web.config I configured this :

<system.net>
<connectionManagement>
<add address="*" maxconnection="100" />
</connectionManagement>
<settings>
<servicePointManager expect100Continue="true" />
</settings>
</system.net>


Is there any suggest where is the problem and how to solve ?

Answer

By Adding a GC.Collect() before this code every thing works fine ,