Diameter SIP Application AVPs

 This section defines new AVPs used in this Diameter SIP application.
   Applications compliant with this specification MUST implement these
   AVPs.

   Table 2 lists the new AVPs defined in this Diameter SIP application.
   The following abbreviations are used in the Data-Type column:

   o  DURI: DiameterURI
   o  E: Enumerated
   o  G: Grouped
   o  OS: OctetString
   o  UTF8S: UTF8String
   o  U32: Unsigned32

Diameter SIP Application Command Codes

All the Diameter implementations conforming to this specification
   MUST implement and support the list of Diameter commands listed in
   Table 1.

   +-------------------------------------+-------+------+--------------+
   | Command Name                        | Abbr. | Code | Reference    |
   +-------------------------------------+-------+------+--------------+
   | User-Authorization-Request          |  UAR  |  283 | Section 8.1  |
   | User-Authorization-Answer           |  UAA  |  283 | Section 8.2  |
   | Server-Assignment-Request           |  SAR  |  284 | Section 8.3  |
   | Server-Assignment-Answer            |  SAA  |  284 | Section 8.4  |
   | Location-Info-Request               |  LIR  |  285 | Section 8.5  |
   | Location-Info-Answer                |  LIA  |  285 | Section 8.6  |
   | Multimedia-Auth-Request             |  MAR  |  286 | Section 8.7  |
   | Multimedia-Auth-Answer              |  MAA  |  286 | Section 8.8  |
   | Registration-Termination-Request    |  RTR  |  287 | Section 8.9  |
   | Registration-Termination-Answer     |  RTA  |  287 | Section 8.10 |
   | Push-Profile-Request                |  PPR  |  288 | Section 8.11 |
   | Push-Profile-Answer                 |  PPA  |  288 | Section 8.12 |
   +-------------------------------------+-------+------+--------------+

                      Table 1: Defined command codes

The Diameter Sip Application : General 

The Diameter SIP application can be used in a SIP environment where
   an interface to a AAA infrastructure is required to authenticate and
   authorize the usage of SIP resources.  This application provides
   support for SIP User Agents and proxies that implement and use HTTP
   Digest authentication [RFC2617], which is the authentication
   mechanism mandated by SIP [RFC3261].  The application is extensible
   and, if need arises, it can be extended to provide support for other
   authentication mechanisms or extensions to HTTP Digest authentication
   when they occur.

Guide to Network Programming

                Hey! Socket programming got you down? Is this stuff just a little too difficult to figure out from the man pages? You want to do cool Internet programming, but you don't have time to wade through a gob of structs trying to figure out if you have to call bind() before you connect(), etc., etc.

Well, guess what! I've already done this nasty business, and I'm dying to share the information with everyone! You've come to the right place. This document should give the average competent C programmer the edge s/he needs to get a grip on this networking noise.

C++ Exception Handling

This document is intended for those in need of a transparent and nice way to handle program errors. The text will introduce a widely used method for achieving this: exception handling. The described system is available in many programming language such as Java, C++, Modula-3, etc., but here we will focus on C++ exception handling.

There are several good reasons to use exception handling. The most important thing it does is separate error-handling code from your normal code; this greatly clarifies your code. Secondly, it stimulates consequences because errors are being handled in one place and in one manner.