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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TcpClient(server, servPort); Console.WriteLine("Connected to server... sending echo string"); netStream = client.GetStream(); // Send the encoded string to the server netStream.Write(byteBuffer, 0, byteBuffer.Length); Console.WriteLine("Sent {0} bytes to server...", byteBuffer.Length); int totalBytesRcvd = 0; int bytesRcvd = 0; // Total bytes received so far // Bytes received in last read // Receive the same string back from the server while (totalBytesRcvd < byteBuffer.Length) { if ((bytesRcvd
class for reading and writing character input/output. Base class of StreamReader/Writer and StringReader/Writer. Stream StreamReader/StreamWriter StringReader/StringWriter TextReader/TextWriter Table 3.1: .NET I/O Classes 3.3 Framing and Parsing Converting data to wire format is, of course, only half the story; the original information must be recovered at the receiver from the transmitted sequence of bytes. Application protocols typically deal with discrete messages, which are viewed as
Programs that exchange information over the network, however, do not interact directly with routers and generally remain blissfully unaware of their existence. By information we here mean a sequences of bytes that are constructed and interpreted by programs. In the context of computer networks these byte sequences are generally called packets. A packet contains control information that the network uses to do its job and sometimes also includes user data. An example is information about the
implementation Closed Returns instance 157 158 Chapter 5: Under the Hood ■ Call Socket.Bind (new EPEndPoint Call Listen() program Application (IPAddress.Any, Q)) Call TcpListener (IPAddress.Any, Q) Returns instance implementation Closed Underlying Call Start() Create structure Returns instance Fill in local port, set state Listening Local port Local port Q Local IP Local IP * Remote port Remote port * Remote IP Remote IP * Figure 5.7: Server-side socket setup.
