Attach XML content in UDP socket

[irsalina]

Hai everybody,

I write a method to send a SIP message to a server by using UDP Socket. The problem arrives when I have to attached an xml file as the Content, the server dont receive the xml file and detect the Content-Length = 0. Thank you for giving me a hint on how to do this in UDP socket. Here is my method:

public static void sendNotify(){
final String notifyRequest = "NOTIFY sip:irsa@192.168.1.100:5064 SIP/2.0\r\n"+
"Via: SIP/2.0/UDP 192.168.1.101:5060;branch=z9hG4bK-393234-a9a4694bf5565e11365831f58ba0b522\r\n"+
"CSeq: 2 NOTIFY\r\n"+
"Call-ID: 0ha0isnda977644900765@10.0.0.1\r\n"+
"From: <sip:alice@open-ims.test>;tag=37d2721c\r\n"+
"To: <sip:irsa@open-ims.test>;tag=1026\r\n"+
"Call-ID: 0a11aced29850e7ccea884a679f0d888@192.168.1.100\r\n "+
"Contact: <sip:192.168.1.101:5060;transport=udp>\r\n"+
"Route: <sip:mo@scscf.open-ims.test:6060;lr>,<sip:mo@pcscf.open-ims.test:4060;lr>\r\n"+
"Event: presence\r\n" +
"Max-Forwards: 70\r\n" +
"Subscription-State: active;expires=3583\r\n" +
"Content-Type: application/pidf+xml\r\n" +
"P-Charging-Vector: icid-value=z9hG4bK-393234-6e5fcdf8a6da1a0c3f2923a42f6608c51308226155111;orig-ioi=mobicents.org\r\n" +
"Content-Length: 459\r\n"+
"<?xml version=\"1.0\" encoding=\"UTF-8\"?><presence xmlns=\"urn:ietf:params:xml:ns:pidf\" xmlns:dm=\"urn:ietf:params:xml:ns:pidf:data-model\" xmlns:op=\"urn:oma:xml:prs:pidf:oma-pres\" xmlns:opd=\"urn:oma:xml:pde:pidf:ext\" xmlns:rpidf=\"urn:ietf:params:xml:ns:pidf:rpid\" entity=\"sip:alice@open-ims.test\"><tuple id=\"com1\"><status><basic>open</basic></status></tuple><dm:person id=\"per123\"><rpidf:activities id=\"act1\"><rpidf:busy/></rpidf:activities></dm:person></presence> ";

byte[] notifyRequestBytes = notifyRequest.getBytes();

try {
localhost = InetAddress.getByName("10.193.193.46");
DatagramSocket socket = new DatagramSocket(33276, localhost);
socket.send(new DatagramPacket(notifyRequestBytes,notifyRequestByt es.length,localhost, 5060));
} catch (SocketException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (UnknownHostException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}

Thank you!

[Norm]

What code on the server is receiving the Datagram?

detect the Content-Length = 0

Where does "Content-Length" come from with Datagrams?

[irsalina]

I use application server Mobicents (which will receive my Sip message), So, I dont know exactly which code
I thought Content-Length comes from the length of the xml character/data that I put below the header?

[Norm]

The string: Content-Length looks like a field in a HTTP request header.
If you are using Datagrams there wouldn't be a HTTP request header.
What protocols does your server use at the port you are using? Is it expecting a HTTP request?
Or does it receive a Datagram?

[irsalina]

in sip protocol I saw that they use also content-length if I attache an xml. My server listens to UDP in port 5060. It is expecting SIP messages, actually.
Could you give me some hint?
Thanks!

[Norm]

Sorry, I have no idea what a SIP message is or how a server processes it.
Google it and see if you are formatting the data correctly.

[Norm]

Another idea: In HTTP there is a blank line between the header and the data. Does SIP have this? You could need:

"Content-Length: 459\r\n\r\n" +

[irsalina]

Another idea: In HTTP there is a blank line between the header and the data. Does SIP have this? You could need:

"Content-Length: 459\r\n\r\n" +

Thank you! It was right, I should put another blank line and it works.