TCP/IP Sockets in C#: Practical Guide for Programmers (The Practical Guides)
Michael J. Donahoo, Kenneth L. Calvert
Language: English
Pages: 175
ISBN: 0124660517
Format: PDF / Kindle (mobi) / ePub
"TCP/IP sockets in C# is an excellent book for anyone interested in writing network applications using Microsoft .Net frameworks. It is a unique combination of well written concise text and rich carefully selected set of working examples. For the beginner of network programming, it's a good starting book; on the other hand professionals could also take advantage of excellent handy sample code snippets and material on topics like message parsing and asynchronous programming."
Adarsh Khare, SDT, .Net Frameworks Team, Microsoft Corporation
The popularity of the C# language and the .NET framework is ever rising due to its ease of use, the extensive class libraries available in the .NET Framework, and the ubiquity of the Microsoft Windows operating system, to name a few advantages. TCP/IP Sockets in C# focuses on the Sockets API, the de facto standard for writing network applications in any programming language. Starting with simple client and server programs that use TCP/IP (the Internet protocol suite), students and practitioners quickly learn the basics and move on to firsthand experience with advanced topics including non-blocking sockets, multiplexing, threads, asynchronous programming, and multicasting. Key network programming concepts such as framing, performance and deadlocks are illustrated through hands-on examples. Using a detailed yet clear, concise approach, this book includes numerous code examples and focused discussions to provide a solid understanding of programming TCP/IP sockets in C#.
Features
*Tutorial-based instruction in key sockets programming techniques complemented by numerous code examples throughout
*Discussion moves quickly into the C# Sockets API definition and code examples, desirable for those who want to get up-to-speed quickly
*Important coverage of "under the hood" details that developers will find useful when creating and using a socket or a higher level TCP class that utilizes sockets
*Includes end-of-chapter exercises to facilitate learning, as well as sample code available for download at the book’s companion web site
*Tutorial-based instruction in key sockets programming techniques complemented by numerous code examples throughout
*Discussion moves quickly into the C# Sockets API definition and code examples, desirable for those who want to get up-to-speed quickly
*Important coverage of "under the hood" details that developers will find useful when creating and using a socket or a higher level TCP class that utilizes sockets
*Includes end-of-chapter exercises to facilitate learning, as well as sample code available for download at the book's companion web site
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Timelimit, output the echoed byte length and close the client socket. ■ Exception handling: lines 78–86 If we hit a timeout limit, output the appropriate message. Close the client socket and allow the receive loop to continue and handle more clients. 4.1.3 Nonblocking Sockets One solution to the problem of undesirable blocking is to change the behavior of the socket so that all calls are nonblocking. For such a socket, if a requested operation can be completed immediately the call’s return.
Entry.Add("Client address and port = " + clntSock.RemoteEndPoint); entry.Add("Thread = " + Thread.CurrentThread.GetHashCode()); 20 21 22 23 24 25 try { // Receive until client closes connection, indicated by a SocketException int recvMsgSize; // Size of received message int totalBytesEchoed = 0; // Bytes received from client byte[] rcvBuffer = new byte[BUFSIZE]; // Receive buffer 26 27 28 29 30 31 32 33 34 35 36 // Receive untl client closes connection, indicated by 0 return code try { while.
ThreadStart constructor, which in turn is passed to the Thread constructor. The new thread will execute the handleclient() method of EchoProtocol when Start() is invoked. The GetHashCode() method of the static Thread.CurrentThread property returns a unique id number for the new thread. ■ Handle exception from AcceptSocket(): lines 29–31 If some I/O error occurs, AcceptSocket() throws a SocketException. In our earlier iterative echo server (TcpEchoServer.cs), the exception is not handled, and.
Network stream and command-line input bytes to be sent. 5. Call BeginWrite: lines 84–88 Call BeginWrite() with the standard Write() arguments plus a user-defined callback method of WriteCallback() (wrapped in an AsyncCallback delegate instance) and a state object reference to the user-defined ClientState. 6. Perform asynchronous processing, then block: lines 90–92 Call doOtherStuff() to simulate asynchronous processing, then use the AsyncWaitHandle property of the IAsyncResult to call WaitOne(),.