UCMA Send File & File Transfer Sample

问题

There are no samples using for UCMA to send file from applicationendpoint to userendpoint or vice versa.

I've tried below sample but it didn't work. See code and error:

        if (e.State == MediaFlowState.Active)
        {
            byte[] fileBytes = null;
            using (FileStream fs = File.OpenRead(_fileToSend))
            {
                fileBytes = new byte[fs.Length];
                fs.Read(fileBytes, 0, fileBytes.Length);
            }

            ContentType ct = new ContentType("text/x-msmsgsinvite");
            ct.CharSet = "UTF-8";
            StringBuilder sb = new StringBuilder();
            sb.Append("Application-Name: File Transfer\r\n");
            sb.Append("Application-GUID: {5D3E02AB-6190-11d3-BBBB-00C04F795683}\r\n");
            sb.Append("Invitation-Command: INVITE\r\n");
            sb.Append("Invitation-Cookie: 33267\r\n");
            sb.Append("Application-File: Readme.txt\r\n");
            sb.Append("Application-FileSize: " + fileBytes.Length.ToString() + "\r\n");
            sb.Append("Connectivity: N\r\n\r\n");
            string s = sb.ToString();
            byte[] bytes1 = Encoding.UTF8.GetBytes(s);

            try
            {
                _instantMessagingFlow.BeginSendInstantMessage(ct, bytes1, result1 =>
                {
                    _instantMessagingFlow.EndSendInstantMessage(result1);
                }, null);

                WriteLog.AddLine("File sent to: " + _coachSipAddress + " from: " + _userSipAddress + " the file: " + _fileToSend);
            }
            catch (Exception ex)
            {
                WriteLog.AddLine("File couldn't sent " + ex.StackTrace);
            }
        }

11:16 sip:emre@dev-adoptuc.com said: Invitation-Command: CANCEL Invitation-Cookie: 33267 Cancel-Code: FAIL

Can anybody help or give any sample for sending file in UCMA for file transfer?

来源：https://stackoverflow.com/questions/32267114/ucma-send-file-file-transfer-sample