[Mono-bugs] [Bug 429200] New: Cannot re-call start of asynchronous method... Error

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https://bugzilla.novell.com/show_bug.cgi?id=429200


           Summary: Cannot re-call start of asynchronous method... Error
           Product: Mono: Class Libraries
           Version: 2.0
          Platform: All
        OS/Version: Windows XP
            Status: NEW
          Severity: Normal
          Priority: P5 - None
         Component: System
        AssignedTo: mono-bugs at lists.ximian.com
        ReportedBy: andrew at coupesonline.com
         QAContact: mono-bugs at lists.ximian.com
          Found By: DeveloperNet


Description of Problem:
System.InvalidOperationException: Cannot re-call start of asynchronous method
while a previous call is still in progress.  Error occurs when:

 System.Net.HttpWebRequest.BeginGetRequestStream (System.AsyncCallback
callback, System.Object state) [0x00000]
  at System.Net.HttpWebRequest.GetRequestStream () 

The code shown below has been running perfectly for months under Net 2.0. 
The code uploads a file to a web service using the REST framework.  The REST
libs are well tested and work fine under Mono -  except when I upload a file
using the code below.

int bytesRead = 0;
while ((bytesRead = bufferedInput.Read(buf, 0, 1024)) > 0)
{
contentLength += bytesRead;
request.GetRequestStream().Write( buf, 0, bytesRead );
}
request.GetRequestStream().Close();


Robert Jordan (robertj at gmx.net)suggested following work around, which worked.

Stream reqStm = request.GetRequestStream();
int bytesRead = 0;
while ((bytesRead = bufferedInput.Read(buf, 0, 1024)) > 0)
{
contentLength += bytesRead;
reqStm.Write( buf, 0, bytesRead );
}
reqStm.Close();




Steps to reproduce the problem:
1. 
2. 


Actual Results:


Expected Results:


How often does this happen? 


Additional Information:


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