Posting using POST from C# over https

Answer 1

Hi Martin!

I was battling with the exact same problem a bit earlier (although in compact framework). Here's my question and my own answer to it: http://stackoverflow.com/questions/768641/asynchronous-webrequest-with-post-parameters-in-net-compact-framework

My version is asynchronous, so it's a bit more complex than what you're looking for, but the idea remains.

private string sendRequest(string url, string method, string postdata) {
    WebRequest rqst = HttpWebRequest.Create(url);

    // only needed, if you use HTTP AUTH
    //CredentialCache creds = new CredentialCache();
    //creds.Add(new Uri(url), "Basic", new NetworkCredential(this.Uname, this.Pwd));
    //rqst.Credentials = creds;
    rqst.Method = method;
    if (!String.IsNullOrEmpty(postdata)) {
        //rqst.ContentType = "application/xml";
        rqst.ContentType = "application/x-www-form-urlencoded";

        byte[] byteData = UTF8Encoding.UTF8.GetBytes(postdata);
        rqst.ContentLength = byteData.Length;
        using (Stream postStream = rqst.GetRequestStream()) {
            postStream.Write(byteData, 0, byteData.Length);
            postStream.Close();
        }
    }
    ((HttpWebRequest)rqst).KeepAlive = false;
    StreamReader rsps = new StreamReader(rqst.GetResponse().GetResponseStream());
    string strRsps = rsps.ReadToEnd();
    return strRsps;

}

Answer 2

Hi, see my answer to your other question. I believe your problem may not be your C# code. The web service URL accually returns a 404 with several other tools I used, but it returns the response you indicated if you leave off the trailing slash from the web service URL, so I suggest trying that.

Oddly, it doesn't seem to matter if the trailing URL is there when not doing SSL. Something strange with that web server, I guess.

Answer 3

Hi,

dont know if u already resolved this issue, it´s a post from one year ago. I am Spanish and I am using mensario too.

to send and http request: (this is in ASP but the process is the same one)

Function enviarMsg2
   Dim oHTTP,inicio
   Dim strParametros
   Dim devolver

   Set oHTTP= server.CreateObject("Msxml2.ServerXMLHTTP")
   strParametros = "usuario="&usuario&"&clave="&clave&"&nserie="&nserie&"&     version=01010000&operacion=300&sms=1%0934635035526%0920041231233000%09Clinica+Paz%09Clinica+Paz+le+desea+Feliz+Navidad%2E&sms=2%0934612345678%0920041231233001%09Clinica+Paz%09Clinica+Paz+le+desea+Feliz+Navidad%2E"
'response.Write strParametros
'response.End
'Abrimos la conexión con el método POST, ya que estamos enviando una petición.
oHTTP.open "POST", "https://servicios.mensario.com/enviomasivo/apip", False

'Agregamos encabezados HTTP requeridos...
oHTTP.setRequestHeader "Content-Type", "application/x-www-form-urlencoded"

'Enviamos la petición
oHTTP.send strParametros
devolver = oHTTP.responsetext

'Comprobamos si fue correcto         
inicio = Instr(devolver, "100 BIEN")
'response.Write "--->"&inicio
'response.End    
if inicio <=0 then
  enviarSMS2 = "Ha ocurrido un error en el envío del SMS."
else
  enviarSMS2 = Mid(devolver,inicio+9,len(devolver))
end if

Set oHTTP = Nothing

The only thing i dont have is a user /password for a try :)

Basicaly, when the response is "100 bien" the function returns that, otherwise it returns error.Hope it helps :)