Initializing NIST JAIN SIP Stack

This tutorial uses NIST SIP JAIN Reference Implementation. Download the NIST source code from here.

public void init() {
try {
// Get the local IP address.
this.ip = InetAddress.getLocalHost().getHostAddress();
// Create the SIP factory and set the path name.
this.sipFactory = SipFactory.getInstance();
this.sipFactory.setPathName("gov.nist");
// Create and set the SIP stack properties.
this.properties = new Properties();
this.properties.setProperty("javax.sip.STACK_NAME", "stack");
this.properties.setProperty("gov.nist.javax.sip.TRACE_LEVEL", "32");

if(proxy != null) {
this.properties.setProperty("javax.sip.OUTBOUND_PROXY", proxy + ':' + port + '/' + protocol);
}

this.properties.setProperty(
"gov.nist.javax.sip.LOG_MESSAGE_CONTENT", "true");
this.properties.setProperty("gov.nist.javax.sip.DEBUG_LOG",
"mss-jsip-debuglog.txt");
this.properties.setProperty("gov.nist.javax.sip.SERVER_LOG",
"mss-jsip-messages.xml");
// Create the SIP stack.
this.sipStack = this.sipFactory.createSipStack(this.properties);
// Create the SIP message factory.
this.messageFactory = this.sipFactory.createMessageFactory();
// Create the SIP header factory.
this.headerFactory = this.sipFactory.createHeaderFactory();
// Create the SIP address factory.
this.addressFactory = this.sipFactory.createAddressFactory();
// Create the SIP listening point and bind it to the local IP
// address, port and protocol.
this.listeningPoint = this.sipStack.createListeningPoint(this.ip,
this.port, this.protocol);
// Create the SIP provider.
this.sipProvider = this.sipStack
.createSipProvider(this.listeningPoint);
// Add our application as a SIP listener.
this.sipProvider.addSipListener(this);
// Create the contact address used for all SIP messages.
this.contactAddress = this.addressFactory.createAddress("sip:" + this.username + "@"
+ this.ip + ";transport=tcp");
// Create the contact header used for all SIP messages.
this.contactHeader = this.headerFactory
.createContactHeader(contactAddress);
// Display the local IP address and port in the text area.
} catch (Exception e) {
e.printStackTrace();
// If an error occurs, display an error message box and exit.
System.exit(-1);
}
}