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The Design and Realization of IM System Based on P2P-SIP

Author: WangBoYang
Tutor: MaYan
School: Beijing University of Posts and Telecommunications
Course: Computer Science and Technology
Keywords: Instant messaging Kademlia Session Initiation Protocol Peer-to-peer network
CLC: TP393.02
Type: Master's thesis
Year: 2011
Downloads: 48
Quote: 0
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Abstract


The mainstream of today's instant messaging protocol SIMPLE extensions to the SIP protocol is based on the SIP protocol has a flexible , simple and scalable , and has become the mainstream of signaling protocols to build real - time communication system . However , traditional SIP service is based on a client / server architecture , with the rapid growth of the number of users , the \P2P technology is relative to another network information exchange and the client / server model , P2P network node status are equal , there is no longer a client , the server of the points , because of the failure of a single node will not affect the entire network . In some respects , the SIP and P2P complementary. Study how P2P and SIP combined to establish a P2P-SIP architecture - based instant messaging system , has a very important practical significance . Taking into account the integrity of the application , the system not only to support communications online case scenarios , but also to be considered a scene of the communication parties not online , in order to improve the user 's application experience . This thesis are briefly introduced instant messaging , P2P and P2P-SIP Research , after a summary of the introduction of the SIP protocol to do , and then from the SIP functional entities , the three aspects of the realization of the message type and status messages for SIP the protocol for in-depth analysis . P2P technology introduced after classification , compare the pros and cons of the various technologies , and that the better the Kademlia technology of the basic operation and routing lookup mechanism detailed description , choose as the underlying P2P network . In the overall design and P2P SIP two main modules detailed design for the system on the basis of the above theoretical knowledge , and the system in the Windows environment . Finally , test and analysis system . Features and innovations of this paper is mainly reflected in the following aspects : the system is considered when the user is not online , offline message storage , forwarding strategy and implementation , extended the application of this system scene , has a very important practical significance . Modular programming , extend original Kadernlia module for P2P-SIP applications and packaging , to reduce the degree of coupling between the code and improve system reusability .

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Computer network > General issues > Computer network architecture and design
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