In the same way as the socket API, in modern operating systems, implements the functionality of TCP/IP stack protocols, the JAIN-SIP API. Download jain-sip-apijar: jain «j «Jar File Download. Packages. , This package contains the main interfaces that model the JAIN SIP architectute from both an application developer and a.
|Author:||Ms. Bernard Herman|
|Published:||1 September 2015|
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The application developer is concerned with implementing the SipListener interface.
This Interface defines the methods required by applications to receive and process messages from a vendors SIP stack. After the final response, it sends an ACK request.
A Jain sip api dialog is always statefull, and you must use a transaction. To keep the lab simple, the SIP server will send only a final response no provisional responses.
Developing a SIP Application in Java
When receiving the final 2xx response, you must send the ACK on the newly created dialog, which can be obtained with the code: You can create the ACK request using the dialog. Do not forget to add the contact header jain sip api the request, after jain sip api request is created.
Store the dialog object in a class member variable, such that you can use it for the BYE transaction.
When is SIP dialog considered to be created? Use your lecture notes. What happens if your client application fails to send an ACK request after receiving the final 2xx response?
You need to store the created dialog in a class variable. This ensures that all headers already have the correct values.
The interface is shown below: Later you'll be able to use this object to send information back to the GUI. TextClient must be able to receive asynchronous messages jain sip api from other SIP end points.
The observer pattern is used for this: The class implements the SipListener interface to process incoming messages: I'll look at those a bit later.
Maven Repository: » jain-sip-api
Next are two fields to store objects needed later. The Parser Package gov. The parser takes as input either a buffer or an input stream and produces as output a parsed message structure.