Sabre : Get session RQ

Question

I am trying to create session using SessionCreateRQ soap service. where I have created object using HttpWebRequest https://sws3-crt.cert.sabre.com, and i have add the WSDL to service reference in my program:

 

 

String username = "username";
  String Pass = "Pass";
  String Ippc = "iPseudo";
  String ppc = "pseudo";
  String domain = "DEFAULT";

  DateTime dt = DateTime.UtcNow;
  string tstamp = dt.ToString("s") + "Z";



  sessionRQ.MessageHeader msgheader = new sessionRQ.MessageHeader();

  msgheader.ConversationId = "GetsessionRQ";

  //Message Header message header from //
  sessionRQ.From from = new sessionRQ.From();
  sessionRQ.PartyId frompartid = new sessionRQ.PartyId();
  sessionRQ.PartyId[] frompartidarr = new sessionRQ.PartyId[1];
  frompartid.Value = "";
  frompartidarr[0] = frompartid;
  from.PartyId = frompartidarr;
  msgheader.From = from;

  //message Header, To //
  sessionRQ.To to = new sessionRQ.To();
  sessionRQ.PartyId topartid = new sessionRQ.PartyId();
  sessionRQ.PartyId[] topartidarr = new sessionRQ.PartyId[1];
  topartid.Value = "";
  topartidarr[0] = topartid;
  to.PartyId = topartidarr;
  msgheader.To = to;


  msgheader.CPAId = Ippc;
  msgheader.Action = "SessionCreateRQ";
  sessionRQ.Service services = new sessionRQ.Service();
  services.Value = "SessionCreate";
  msgheader.Service = services;


  sessionRQ.MessageData msgData = new sessionRQ.MessageData();
  msgData.MessageId = "adong";
  msgData.Timestamp = tstamp;
  msgheader.MessageData = msgData;


  sessionRQ.Security security = new sessionRQ.Security();
  sessionRQ.SecurityUsernameToken securityusertoken = new
  sessionRQ.SecurityUsernameToken();
  securityusertoken.Username = username;
  securityusertoken.Password = Pass;
  securityusertoken.Organization = Ippc;
  securityusertoken.Domain = ppc;
  security.UsernameToken = securityusertoken;

  sessionRQ.SessionCreateRQ req = new sessionRQ.SessionCreateRQ();
  sessionRQ.SessionCreateRQPOS pos = new sessionRQ.SessionCreateRQPOS();
  sessionRQ.SessionCreateRQPOSSource source = new
  sessionRQ.SessionCreateRQPOSSource();
  source.PseudoCityCode = Ippc;
  pos.Source = source;
  req.POS = pos;

  sessionRQ.SessionCreateRQService servicesobj = new
  sessionRQ.SessionCreateRQService();
  servicesobj.MessageHeaderValue = msgheader;
  servicesobj.SecurityValue = security;



  sessionRQ.SessionCreateRS resp = new sessionRQ.SessionCreateRS();
  try
  {
      resp = servicesobj.SessionCreateRQ(req);
  }
  catch (Exception ex)
  {
      System.Diagnostics.Debug.WriteLine(ex.ToString());
  }

  string a, b;

  a = msgheader.ConversationId;
  b = security.BinarySecurityToken;

 i got error like this : "The request was aborted: Could not create SSL/TLS secure channel". is there something wrong with my code?. and i have followed this code Consuming Sabre soap services using .net