MonoTouch HTTPS Post

gistfile1.cs

using System; 
using MonoTouch.Foundation; 
using MonoTouch.CoreFoundation; 
using MonoTouch.UIKit; 
using MonoTouch.ObjCRuntime; 

namespace MyProject 
{ 
  public class Http 
  { 
    public static string HttpsPost(string url, string postData) 
    { 
      //Instantiate a NSMutableURLRequest 
      IntPtr nsMutableRequestPtr = Messaging.IntPtr_objc_msgSend(new Class("NSMutableURLRequest").Handle, 
        new Selector("new").Handle); 

      //Since NSMutableURLRequest subclasses NSUrlRequest, we can use NSURLRequest to work with 
      NSUrlRequest req = (NSUrlRequest)Runtime.GetNSObject(nsMutableRequestPtr); 

      //Set the url of the request 
      Messaging.void_objc_msgSend_IntPtr(req.Handle, new Selector("setURL:").Handle,
        new NSUrl(url).Handle); 

      //Set the HTTP Method (POST) 
      Messaging.void_objc_msgSend_IntPtr(req.Handle, 
        new Selector("setHTTPMethod:").Handle, 
        new NSString("POST").Handle); 

      //Make a selector to be used twice 
      Selector selSetValueForHttpHeaderField = new Selector("setValue:forHTTPHeaderField:"); 

      //Set the Content-Length HTTP Header 
      Messaging.void_objc_msgSend_IntPtr_IntPtr(req.Handle, 
        selSetValueForHttpHeaderField.Handle, 
        new NSString(postData.Length.ToString()).Handle, 
        new NSString("Content-Length").Handle); 

      //Set the Content-Type HTTP Header 
      Messaging.void_objc_msgSend_IntPtr_IntPtr(req.Handle, 
        selSetValueForHttpHeaderField.Handle, 
        new NSString("application/x-www-form-urlencoded").Handle, 
        new NSString("Content-Type").Handle); 

      //Make our c# string into a NSString of our post data 
      NSString sData = new NSString(postData); 

      //Now get NSData from that string using ASCII Encoding 
      NSData pData = new NSData(Messaging.IntPtr_objc_msgSend_int_int(sData.Handle, 
        new Selector("dataUsingEncoding:allowLossyConversion:").Handle, 1, 1)); 

      //Set the HTTPBody, which is our POST data 
      Messaging.void_objc_msgSend_IntPtr(req.Handle, 
        new Selector("setHTTPBody:").Handle, 
        pData.Handle); 

      //Need to pass in a reference to the urlResponse object for the next method 
      IntPtr urlRespHandle = IntPtr.Zero; 

      //Send our request Synchronously 
      NSData dataResult = new NSData(Messaging.IntPtr_objc_msgSend_IntPtr_IntPtr_IntPtr(
        new Class("NSURLConnection").Handle, 
        new Selector("sendSynchronousRequest:returningResponse:error:").Handle, 
        req.Handle, urlRespHandle, IntPtr.Zero)); 

      //Get the urlResponse object 
      // Get this if you need it 
      //NSUrlResponse urlResp = (NSUrlResponse)Runtime.GetNSObject(urlRespHandle); 

      //Get ourselves a new NSString alloc'd, but not init'd 
      IntPtr resultStrHandle = Messaging.IntPtr_objc_msgSend(new Class("NSString").Handle, 
        new Selector("alloc").Handle); 

      //Init the NSString with our response data, and UTF8 encoding 
      resultStrHandle = Messaging.IntPtr_objc_msgSend_IntPtr_int(resultStrHandle, 
        new Selector("initWithData:encoding:").Handle, dataResult.Handle, 4); 

      //Finally, get our string result 

      return new NSString(resultStrHandle); 
    } 
  } 
}