How to use PennySMS in c#.net?

Question

Has anyone used PennySMS's web services? (https://www.pennysms.com/docs) I'm having some difficulty doing a successful HttpPost request.

Update: I'm a n00b to Web Services. I don't even know if I can complete this type of request server-side. I've replaced the actual info in the params with example info.

protected void bText_Click(object sender, EventArgs e)
 {
    string XML = "<?xml version=\"1.0\"?>"
                    +"<methodCall>"
                    +"<methodName>send</methodName>"
                    +"    <params>"
                    +"        <param>"
                    + "            <value><string>MY KEY</string></value>"
                    +"        </param>"
                    +"        <param>"
                    + "            <value><string>[email protected]</string></value>"
                    +"       </param>"
                    +"       <param>"
                    + "           <value><string>555555555</string></value>"
                    +"       </param>"
                    +"       <param>"
                    +"          <value><string>Test Message</string></value>"
                    +"      </param>"
                    +"  </params>"
                    +"</methodCall>";
    SendText("http://api.pennysms.com/xmlrpc", "XML");
}
public void SendText(string _URL, string _parameters)
{
    WebRequest request = WebRequest.Create(_URL);
    request.Method = "POST";
    string postData = _parameters;
    byte[] byteArray = Encoding.UTF8.GetBytes(postData);
    request.ContentType = "text/xml";
    request.ContentLength = byteArray.Length;
    Stream dataStream = request.GetRequestStream();
    dataStream.Write(byteArray, 0, byteArray.Length);
    dataStream.Close();
}

Answer 1

If you're using the XML-RPC API, have you checked your content-type? It should be "text/xml".

Answer 2

The following code works. I've made no attemps to optimize anything. Unless the server restricts outgoing connections, you can use this server-side.

 protected static string DoRequest()
 {
  string XML = "<?xml version=\"1.0\"?>"
   +"<methodCall>"
   +"<methodName>send</methodName>"
   +"    <params>"
   +"        <param>"
   + "            <value><string>MY KEY</string></value>"
   +"        </param>"
   +"        <param>"
   + "            <value><string>[email protected]</string></value>"
   +"       </param>"
   +"       <param>"
   + "           <value><string>555555555</string></value>"
   +"       </param>"
   +"       <param>"
   +"          <value><string>Test Message</string></value>"
   +"      </param>"
   +"  </params>"
   +"</methodCall>";
  return SendText("http://api.pennysms.com/xmlrpc", XML);
 }
 public static string SendText(string _URL, string _parameters)
 {
  WebRequest request = WebRequest.Create(_URL);
  request.Method = "POST";
  string postData = _parameters;
  byte[] byteArray = Encoding.UTF8.GetBytes(postData);
  request.ContentType = "text/xml";
  request.ContentLength = byteArray.Length;
  Stream dataStream = request.GetRequestStream();
  dataStream.Write(byteArray, 0, byteArray.Length);
  dataStream.Close();

  long responseLength = request.GetResponse().ContentLength;
  Stream responseStream = request.GetResponse().GetResponseStream();
  MemoryStream memStream = new MemoryStream((int)responseLength);
  byteArray = new byte[4096];
  int bytesRead = 0;
  bytesRead = responseStream.Read(byteArray, 0, 4096);    
  while(bytesRead > 0)
  {
   memStream.Write(byteArray, 0, bytesRead);
   bytesRead = responseStream.Read(byteArray, 0, 4096);    
  }   
  return Encoding.UTF8.GetString(memStream.ToArray());
 }