[Mono-bugs] [Bug 692461] New: HttpWebRequest is throwing ArgumentOutOfRange exception randomly

[bugzilla_noreply at novell.com]

https://bugzilla.novell.com/show_bug.cgi?id=692461

https://bugzilla.novell.com/show_bug.cgi?id=692461#c0


           Summary: HttpWebRequest is throwing ArgumentOutOfRange
                    exception randomly
    Classification: Mono
           Product: Mono: Class Libraries
           Version: 2.10.x
          Platform: x86-64
        OS/Version: Linux
            Status: NEW
          Severity: Normal
          Priority: P5 - None
         Component: System
        AssignedTo: mono-bugs at lists.ximian.com
        ReportedBy: novell at pasichnyk.net
         QAContact: mono-bugs at lists.ximian.com
          Found By: ---
           Blocker: ---


User-Agent:       Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/534.24
(KHTML, like Gecko) Chrome/11.0.696.60 Safari/534.24

Here is the error_log content:

Handling exception type ArgumentOutOfRangeException
Message is Non-negative number required.
Parameter name: srcOffset
IsTerminating is set to True
System.ArgumentOutOfRangeException: Non-negative number required.
Parameter name: srcOffset
  at System.Buffer.BlockCopy (System.Array src, Int32 srcOffset, System.Array
dst, Int32 dstOffset, Int32 count) [0x00000] in <filename unknown>:0
  at System.Net.WebConnectionStream.ReadAll () [0x00000] in <filename
unknown>:0
  at System.Net.WebConnectionStream.CheckResponseInBuffer () [0x00000] in
<filename unknown>:0
  at (wrapper remoting-invoke-with-check)
System.Net.WebConnectionStream:CheckResponseInBuffer ()
  at System.Net.WebConnection.ReadDone (IAsyncResult result) [0x00000] in
<filename unknown>:0
[Sun May 08 14:38:30 2011] [error] (70014)End of file found: read_data failed
[Sun May 08 14:38:30 2011] [error] Command stream corrupted, last command was 1
[Sun May 08 14:38:30 2011] [error] (70014)End of file found: read_data failed
[Sun May 08 14:38:30 2011] [error] Command stream corrupted, last command was 1
[Sun May 08 14:38:30 2011] [error] (70014)End of file found: read_data failed
[Sun May 08 14:38:30 2011] [error] Command stream corrupted, last command was 1
[Sun May 08 14:38:30 2011] [error] (104)Connection reset by peer: read_data
failed
[Sun May 08 14:38:30 2011] [error] Command stream corrupted, last command was
-1
[Sun May 08 14:38:30 2011] [error] (70014)End of file found: read_data failed
[Sun May 08 14:38:30 2011] [error] Command stream corrupted, last command was 1



Example code that exhibits the issue from time to time (no clear repro):

{
                        HttpWebRequest request =
(HttpWebRequest)WebRequest.Create(Url);
                        request.Method = Method;
                        request.Timeout = 60000;
                        request.ReadWriteTimeout = 60000;
                        request.KeepAlive = false;
                        request.Proxy = null;

                        if (AllowGzip)
                           
request.Headers.Add(HttpRequestHeader.AcceptEncoding, "gzip");

                        string responseJson = string.Empty;


                        HttpWebResponse response =
(HttpWebResponse)request.GetResponse();
                        if (response.StatusCode == HttpStatusCode.OK)
                        {
                            using (System.IO.Stream stream =
response.GetResponseStream())
                            {
                                responseJson = ReadAndUnzipStream(stream,
response.ContentEncoding);
                            }
                            return responseJson;
                        }

 private static string ReadAndUnzipStream(System.IO.Stream stream, string
encoding)
        {
            if (encoding == "gzip")
            {
                using (ICSharpCode.SharpZipLib.GZip.GZipInputStream gzipStream
= new ICSharpCode.SharpZipLib.GZip.GZipInputStream(stream))
                {
                    using (System.IO.StreamReader sr = new
System.IO.StreamReader(gzipStream))
                    {
                        return sr.ReadToEnd();
                    }
                }
            }
            else
            {
                using (System.IO.StreamReader sr = new
System.IO.StreamReader(stream))
                {
                    return sr.ReadToEnd();
                }
            }
        }





Reproducible: Always

Steps to Reproduce:
1. Make calls to externally hosted JSON service
2. Occasionally observe exception being thrown
3.
Actual Results:  
App crashes even if i catch(Exception) ???

Expected Results:  
no exception is thrown

Is this occurring when the call times out? 

Url called is like this:  

http://ax.itunes.apple.com/WebObjects/MZStoreServices.woa/wa/wsLookup?id=418478743&country=US

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