[MonoTouch] 100% NullReferenceException in HttpWebRequest.GetRequestStream()

[Will Stones]

Hi,

Since upgrading to MonoTouch 4.2.2 and MonoDevelop 2.8 I'm experience a 100%
NullReferenceException when making a call to
HttpWebRequest.GetRequestStream() when running on an iOS 3.1.3 device.  I've
pasted the exception trace below.

The code which reproduces the exception is as follows:
    HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(uri);
    request.UserAgent = "MyUserAgent";
    request.Timeout = 15000;
    request.KeepAlive = true;
    request.Method = "POST";
    string requestString = GetQueryString();
    byte[] postBytes = Encoding.ASCII.GetBytes(requestString);
    request.ContentLength = postBytes.Length;
    request.ContentType = "application/x-www-form-urlencoded";
    // Crashes on this line
    request.GetRequestStream().Write(postBytes, 0, postBytes.Length);


The code used to work fine until I upgraded MT and MD (I'm afraid I've lost
the installers for the versions I was using so I can't tell you when the
problem was introduced).

This issue is pretty critical for me...!  Can anyone confirm how long a fix
for an issue like this is likely to take?  If you'd like any more info on
this please let me know.

Will

[0xe374][219] <Notice>: Failed to make API call:
System.NullReferenceException: Object reference not set to an instance of an
object
[0xe374][219] <Notice>:   at
MonoTouch.CoreFoundation.CFProxy.CFProxyTypeToEnum
(MonoTouch.Foundation.NSString type) [0x00000] in <filename unknown>:0 
[0xe374][219] <Notice>:   at MonoTouch.CoreFoundation.CFProxy.get_ProxyType
() [0x00000] in <filename unknown>:0 
[0xe374][219] <Notice>:   at
MonoTouch.CoreFoundation.CFNetwork+CFWebProxy.GetProxy (System.Uri
targetUri) [0x00000] in <filename unknown>:0 
[0xe374][219] <Notice>:   at
MonoTouch.CoreFoundation.CFNetwork+CFWebProxy.IsBypassed (System.Uri
targetUri) [0x00000] in <filename unknown>:0 
[0xe374][219] <Notice>:   at System.Net.ServicePointManager.FindServicePoint
(System.Uri address, IWebProxy proxy) [0x00000] in <filename unknown>:0 
[0xe374][219] <Notice>:   at System.Net.HttpWebRequest.GetServicePoint ()
[0x00000] in <filename unknown>:0 
[0xe374][219] <Notice>:   at System.Net.HttpWebRequest.BeginGetRequestStream
(System.AsyncCallback callback, System.Object state) [0x00000] in <filename
unknown>:0 
[0xe374][219] <Notice>:   at System.Net.HttpWebRequest.GetRequestStream ()
[0x00000] in <filename unknown>:0 


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