Instant Messenger Architecture

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Instant Messenger Project

The system is intended for internal corporate exchange of messages, files and multimedia in real time. In addition, it can be used as a base for creation of various secure distributed systems for corporate clients.

Instant Messenger Project

Main features:

  • Exchange of text messages, URLs, files;
  • High-stability encryption algorithms;
  • Storage of detailed user information, search by different criteria;
  • Full authorization of access and contact, extended contacts management functionality;
  • Broadcast messaging function;
  • Support of offline messages;
  • Peer-to-peer connection between users;
  • Server scalability;
  • Possibility of remote server administration;
  • Unlimited possibilities of functionality modification and extension by means of plug-ins (for example, use of SMS services, conventional paging, instant messengers such as ICQ, AIM, MSN, etc.);
  • Possibility of working within LAN or using dial-up/broadband connection;
  • User-friendly customizable interface.

The system consists of client and server parts and a special administrator application.

CIM is implemented as a demo version for corporate clients in need of secure and extendable data exchange/document circulation solutions using dial-up/cable connection or working within LAN.

Possible applications: data exchange between head office and subsidiaries, organization of online meetings/conferences, distributed alerting and/or document delivery service. CIM-based solutions can be used for teaching, testing, working time management purposes, etc.

System requirements

Client application: Windows 95/98/ME/NT/2000, 2 mB+ hard disk space. No installation required.

Server application: MS Windows NT 4.0/2000, 2 mB+ hard disk space. No installation required. 128 mB+ RAM. Can be implemented as a stand-alone application or service.


IM-based distributed solutions

Any geographically distributed corporation or company allowing its employees to work remotedly/from home or using a CRM (Customer Relation Management) system requires a secure virtual network.

An obvious solution would be MS Windows2000. However, it has some limitations. Another alternative is the development of a dedicated distributed application that would provide secure access to corporate resources using global internet connections.

The existing demo version of CIM can be used as a network base for such applications.

CIM supports the following functions:

  • maintenance of user database on server level;
  • access authorization;
  • exchange of arbitrary data using dedicated inner protocol;
  • traffic encryption;
  • remote administration of the server.

Extended functionality was the main feature of CIM project from the very beginning. Messaging itself is a plug-in that demonstrates workability of the application, i.e. the core of the application is the tool, which can be used as a basis for development of dedicated distributed systems.

Such systems can be built in several ways depending on the features required, number of users, traffic density, etc.

If the customer needs to add some new communicative functions, it is implemented by developing special plug-ins to the core. A plug-in for the client application can be developed for any user interface task based on the list of clients or services.

The same is true for server part of the application if there is no considerable increase of traffic density (for example, for support of ICQ or MSN messengers or SMS messaging). In this case the number of users should not exceed several hundreds.

If server functionality needs considerable extension, the solution can be arranged as a server application/service. In this case the main server will be used only for authorization of users and dispatch of extra servers. Users will be redirected to a specialized server and work with it. The same redirecting will occur if the number of users exceeds one thousand or in case of considerable traffic density.

Finally, for the very special situations when the general logic of client interface is not based on the list of clients or services, a dedicated client application can be developed. Such client applications will use the same data exchange protocol as the main application.

The existing version uses UDP as the base protocol, but TCP protocol can be added without modification of the core logic.

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