Hi ,
I'm trying to use CUMI API for sending Message to Unity Connection.
I'm following DocWiki example,but all the time get Response  from Unity:The remote server returned an error 400 Bad Request
Here is the Code:
private void button1_Click(object sender, EventArgs e)
        {
            string str;
            HttpWebRequest req = (HttpWebRequest)WebRequest.Create("https://10.0.0.201:8443/vmrest/messages");
            System.Net.ServicePointManager.CertificatePolicy = new TrustAllCertificatePolicy();
            byte[] bytes = Encoding.UTF8.GetBytes("******:*******");
            string base64 = Convert.ToBase64String(bytes);
            req.Method = "Post";
            req.Accept = "application/xml";
            req.ProtocolVersion = System.Net.HttpVersion.Version11;
            req.ContentType = "multipart/mixed";
            req.Headers.Add("Authorization", "Basic " + base64);
            byte[] sentData = Check();
            req.ContentLength = sentData.Length;
            Stream sendStream = req.GetRequestStream();
            sendStream.Write(sentData, 0, sentData.Length);
            sendStream.WriteTimeout = 10;
            sendStream.Close();
            try
            {
                WebResponse res = req.GetResponse();
                StreamReader readl = new StreamReader(res.GetResponseStream());
                str = readl.ReadLine();
                MessageBox.Show(str);
                readl.Close();//
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }

public byte[] Check()
        {
           
            string data;
            TextReader tr = new StreamReader(File.OpenRead("c:\\1.txt"));
            Chilkat.Mime mime = new Chilkat.Mime();
            bool success;
            success = mime.UnlockComponent("Anything for 30-day trial");
            if (success == false)
            {
                MessageBox.Show("Failed to unlock component");
                return mime.GetMimeBytes();
            }
            //  Initialize this MIME object as a multipart/mixed:
            success = mime.NewMultipartMixed();
            mime.ContentType = "multipart/mixed";
            //  Now insert some files:
            data = tr.ReadLine();
            Chilkat.Mime textBody = new Chilkat.Mime();
            textBody.SetBodyFromPlainText(data);
            textBody.ContentType = "application/json";
            success = mime.AppendPart(textBody);
            if (success == false)
            {
                MessageBox.Show(mime.LastErrorText);
                return  mime.GetMimeBytes();
            }
            data = tr.ReadLine();
            Chilkat.Mime textBody1 = new Chilkat.Mime();
            textBody1.SetBodyFromPlainText(data);
            textBody1.ContentType = "application/json";
            success = mime.AppendPart(textBody1);
            if (success == false)
            {
                MessageBox.Show(mime.LastErrorText);
                return mime.GetMimeBytes();
            }
            
            /*
            Chilkat.Mime textBody2 = new Chilkat.Mime();
            textBody2.SetBodyFromFile("C://2020.wav");
            textBody2.ContentType = "audio/wav";
            success = mime.AppendPart(textBody2);
            if (success == false)
            {
                MessageBox.Show(mime.LastErrorText);
                return mime.GetMimeBytes();
            }
            */      
      
            return mime.GetMimeBytes();
        }

DATA Of Message Sent To Server in JSON
{"Subject":"subscriber send message test","ArrivalTime":"0","FromSub":"false"}
{"Recipient":{"Type":"TO","Address":{"ObjectId":"fae5a39d-2ef3-490b-8750-e4a54193cd73","Type":"SUBSCRIBER"}}}
 
The response from EchoServer is:
POST / HTTP/1.1
Accept: application/xml
Content-Type: multipart/mixed
Authorization: Basic ********
Host: 127.0.0.1:8081
Content-Length: 580
Expect: 100-continue
Connection: Keep-Alive

Content-Type: multipart/mixed;
        boundary="------------070200000807000300060601"

This is a multi-part message in MIME format.

--------------070200000807000300060601
Content-Transfer-Encoding: 7bit
Content-Type: application/json

{"Subject":"subscriber send message test","ArrivalTime":"0","FromSub":"false"}
--------------070200000807000300060601
Content-Transfer-Encoding: 7bit
Content-Type: application/json 

 {"Recipient":{"Type":"TO","Address":{"ObjectId":"fae5a39d-2ef3-490b-8750-e4a541
93cd73","Type":"SUBSCRIBER"}}}
--------------070200000807000300060601--

Any Help or Example?
Thanks

A 400 error usually has content along with the HTTP header that gives more detail on the error.  If that doesn't provide enough information, I would suggest setting the VMREST micro traces to debug, reproduce the error and take a look at the connection tomcat diagnostic logs.
 
-Dave