Get Instant Messaging Systems: Cracking the Code PDF

By Dreamtech Software Team

ISBN-10: 0764549537

ISBN-13: 9780764549533

* whole quick messaging functions with layout standards, circulation diagrams and resource code with line-by-line clarification. * comprises 2 diversified Jabber-compliant IM suggestions - Java dependent and .NET dependent with C#. * every one resolution makes heavy use of internet providers. * The IM consumer is prolonged past the machine to incorporate hand held instant units. concerning the CD-ROM CD ROM contains absolutely functioning IM structures in-built the booklet, besides entire resource code and extra third celebration improvement instruments.

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Read e-book online Instant Messaging Systems: Cracking the Code PDF

* entire quick messaging purposes with layout requirements, stream diagrams and resource code with line-by-line clarification. * contains 2 varied Jabber-compliant IM recommendations - Java dependent and . internet dependent with C#. * each one answer makes heavy use of internet providers. * The IM customer is prolonged past the machine to incorporate hand-held instant units.

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Additional info for Instant Messaging Systems: Cracking the Code

Example text

For authentication, this Web service uses two parameters – login name and password – entered by the user while logging in. At the beginning of the validation process, the Login Web service picks the login name entered by the user and consults the appropriate table (member) maintained by the application database. While scrolling the table’s records, if the Web service finds that the user name does not exist, an error is raised by the Web service, and delivered to the server. The server, on receiving such an error, generates the appropriate XML for the client, and the process of authorizing the client stops.

Add to message queue with appropriate user identification. Wait for any response from Jabber Server. Y* Figure 2-3b: Work flow of the local server module (continued) Unregister E* YES Call the appropriate Web service to modify the database and add the response to the message queue. Create appropriate XML for Jabber and send to it. K* NO Quit NO YES Call the appropriate Web service to modify the database and add the response to the message Create appropriate XML for Jabber and send to it. STOP Z* 21 22 Chapter 2: Designing the Instant Messaging Application Read any XML requests from the Client.

The local server, as depicted in the following code, reframes the structure of client request for the roster: - In reply to the roster request, the Jabber server hands over the list to the local server. The roster faced by the local server appears as shown in Listing 2-6. com" subscription="both"> Friends The roster received by the local server is not recognized by the recipient client.

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Instant Messaging Systems: Cracking the Code by Dreamtech Software Team


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