Timeout on HttpWebRequest.GetRequestStream()

  • Thread starter Thread starter Gilberto Araya
  • Start date Start date
G

Gilberto Araya

I have the following code that invokes a web service:

HttpWebRequest request = (HttpWebRequest)WebRequest.Create(wftUrl);
request.Method = "POST";
request.ContentType = "application/x-www-form-urlencoded";

// Prepare the request stream
StringBuilder requestContent = new StringBuilder("WFTXMLFEED=");
requestContent.Append(HttpUtility.UrlEncode(document.OuterXml));
byte[] encodedRequest = Encoding.UTF8.GetBytes(requestContent.ToString());
request.ContentLength = encodedRequest.Length;

using (Stream requestStream = request.GetRequestStream())
{
requestStream.Write(encodedRequest, 0, encodedRequest.Length);
requestStream.Close();
}



The previous code works fine most of the time, but every once in a while a
WebException indicating a timeout is thrown in the GetRequestStream() call.
A similar application using XMLHTTP (COM interfaces) never causes a timeout,
so I doubt it is a problem on the web service side...

Anyone who has an explanation for why this might be happening, or more
importantly, a solution for this problem, I would appreciate it if it is
posted here...

Thanks,

Gilberto Araya
 
"Gilberto Araya" spoke:
I have the following code that invokes a web service:

HttpWebRequest request = (HttpWebRequest)WebRequest.Create(wftUrl);
request.Method = "POST";
request.ContentType = "application/x-www-form-urlencoded";

// Prepare the request stream
StringBuilder requestContent = new StringBuilder("WFTXMLFEED=");
requestContent.Append(HttpUtility.UrlEncode(document.OuterXml));
byte[] encodedRequest =
Encoding.UTF8.GetBytes(requestContent.ToString());
request.ContentLength = encodedRequest.Length;

using (Stream requestStream = request.GetRequestStream())
{
requestStream.Write(encodedRequest, 0, encodedRequest.Length);
requestStream.Close();
}



The previous code works fine most of the time, but every once in a
while a WebException indicating a timeout is thrown in the
GetRequestStream() call. A similar application using XMLHTTP (COM
interfaces) never causes a timeout, so I doubt it is a problem on
the web service side...

Anyone who has an explanation for why this might be happening, or
more importantly, a solution for this problem, I would appreciate it
if it is posted here...
Click to expand...

Maybe HttpWebRequest and XMLTHTTP use different default timeouts. You
can set HttpWebRequest.Timeout to Timeout.Infinite and check if that
solves the problem.

Cheers,
 
It's not a problem with the timeout interval. I've set ridiculously high
timeouts to my example, and result is the same (just takes longer for the
exception to be thrown).


Joerg Jooss said:
"Gilberto Araya" spoke:
I have the following code that invokes a web service:

HttpWebRequest request = (HttpWebRequest)WebRequest.Create(wftUrl);
request.Method = "POST";
request.ContentType = "application/x-www-form-urlencoded";

// Prepare the request stream
StringBuilder requestContent = new StringBuilder("WFTXMLFEED=");
requestContent.Append(HttpUtility.UrlEncode(document.OuterXml));
byte[] encodedRequest =
Encoding.UTF8.GetBytes(requestContent.ToString());
request.ContentLength = encodedRequest.Length;

using (Stream requestStream = request.GetRequestStream())
{
requestStream.Write(encodedRequest, 0, encodedRequest.Length);
requestStream.Close();
}



The previous code works fine most of the time, but every once in a
while a WebException indicating a timeout is thrown in the
GetRequestStream() call. A similar application using XMLHTTP (COM
interfaces) never causes a timeout, so I doubt it is a problem on
the web service side...

Anyone who has an explanation for why this might be happening, or
more importantly, a solution for this problem, I would appreciate it
if it is posted here...
Click to expand...

Maybe HttpWebRequest and XMLTHTTP use different default timeouts. You
can set HttpWebRequest.Timeout to Timeout.Infinite and check if that
solves the problem.

Cheers,
Click to expand...
 
Hi Gilberto,

There is a known issue where the timeout setting does not take for this
part of the request. The workaround is to override the GetWebRequest
method as follows:

public class Service1Proxy : SoapHttpClientProtocol
{
protected override WebRequest GetWebRequest(Uri uri)
{
WebRequest request = base.GetWebRequest(uri);
request.Timeout = this.Timeout;
}
}

I look forward to your result.

Have a nice day!

Regards,

HuangTM
Microsoft Online Partner Support
MCSE/MCSD

Get Secure! ¨C www.microsoft.com/security
This posting is provided ¡°as is¡± with no warranties and confers no rights.
 
Back
Top