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Ch3-Net-Prog - an end-of-file to terminate communication...

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CECS 474 Computer Network Interoperability CHAPTER 3 Network Programming and Applications Central Theme of Chapter A programmer can create Internet application software without understanding the underlying network technology or communication protocols. Client-Server Computing Defn : A server is an application program that waits for contact from another application. Defn : A client is an application program that initiates contact with a server. Dr. Tracy Bradley Maples (Fall 2009)
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Communication Paradigm Most Internet applications follow the same basic sequence of operations when they communicate. The server application starts first, and waits for contact from a client. The client contacts the server by specifying its location and requesting communication. The client and server exchange messages. After they finish sending data, the client and server each send
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Unformatted text preview: an end-of-file to terminate communication. Application Program Interface Defn : An Application Program Interface (API) is a set of high-level operations available for use by an application programmer. The API specifies the arguments for each operation as well as the semantics. Most client-server applications are written using API’s that are written specifically for network communication. Dr. Tracy Bradley Maples (Fall 2009) Peer-To-Peer Interactions Peer-to-Peer (p2p) architectures are created to avoid the bottlenecks that are often created in Client/Server networks. In p2p networks, the data is distributed evenly among a set of N servers, with each server providing 1/N of the data. See Figures 3.5 and 3.5. Dr. Tracy Bradley Maples (Fall 2009)...
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