By Michael J. Donahoo, Kenneth L. Calvert
"TCP/IP sockets in C# is a superb publication for somebody attracted to writing community purposes utilizing Microsoft .Net frameworks. it's a distinct mixture of good written concise textual content and wealthy conscientiously chosen set of operating examples. For the newbie of community programming, it is a stable beginning e-book; nevertheless execs make the most of first-class convenient pattern code snippets and fabric on issues like message parsing and asynchronous programming."
Adarsh Khare, SDT, .Net Frameworks workforce, Microsoft Corporation
The approval for the C# language and the .NET framework is ever emerging as a result of its ease of use, the vast classification libraries to be had within the .NET Framework, and the ubiquity of the Microsoft home windows working approach, to call a number of merits. TCP/IP Sockets in C# makes a speciality of the Sockets API, the de facto normal for writing community purposes in any programming language. beginning with easy customer and server courses that use TCP/IP (the net protocol suite), scholars and practitioners fast study the fundamentals and circulation directly to firsthand event with complex subject matters together with non-blocking sockets, multiplexing, threads, asynchronous programming, and multicasting. Key community programming innovations akin to framing, functionality and deadlocks are illustrated via hands-on examples. utilizing an in depth but transparent, concise strategy, this publication contains a variety of code examples and concentrated discussions to supply a pretty good realizing of programming TCP/IP sockets in C#.
*Tutorial-based guideline in key sockets programming ideas complemented by way of a variety of code examples all through
*Discussion strikes speedy into the C# Sockets API definition and code examples, fascinating when you are looking to get up-to-speed quickly
*Important insurance of "under the hood" info that builders will locate valuable while developing and utilizing a socket or the next point TCP classification that makes use of sockets
*Includes end-of-chapter workouts to facilitate studying, in addition to pattern code on hand for obtain on the book’s significant other site
*Tutorial-based guideline in key sockets programming concepts complemented through a number of code examples all through
*Discussion strikes quick into the C# Sockets API definition and code examples, fascinating should you are looking to get up-to-speed quickly
*Important insurance of "under the hood" information that builders will locate beneficial whilst developing and utilizing a socket or a better point TCP classification that makes use of sockets
*Includes end-of-chapter routines to facilitate studying, in addition to pattern code on hand for obtain on the book's significant other website
Read or Download TCP/IP Sockets in C#: Practical Guide for Programmers (The Practical Guides) PDF
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Extra info for TCP/IP Sockets in C#: Practical Guide for Programmers (The Practical Guides)
12: Demultiplexing with a number of matching sockets. ﬁlled in. different sockets belong to different lively connections. Now contemplate a packet with resource IP tackle 172. sixteen. 1. 10, resource port 56789, vacation spot IP deal with 10. 1. 2. three, and vacation spot port ninety nine. will probably be dropped at the socket linked to constitution 1, simply because that one fits with the fewest wildcards. whilst a software makes an attempt to create a socket with a specific neighborhood port quantity, the present sockets are checked to ensure that no socket is already utilizing that neighborhood port. A Socket Bind() will throw an exception if any socket suits the neighborhood port and native IP tackle (if any) speciﬁed. this may reason difficulties within the following situation: 1. a shopper software creates a Socket with a speciﬁc neighborhood port quantity, say, P, and makes use of it to speak with a server. 2. the customer closes the Socket, and the underlying constitution is going into the Time-Wait country. three. the customer software terminates and is instantly restarted. If the recent incarnation of the customer makes an attempt to exploit an identical neighborhood port quantity, the Socket will throw an SocketException with an ErrorCode of 10048 (address already in use), as a result of the different constitution within the Time-Wait nation. 2 a method to bypass this challenge is to attend till the underlying constitution leaves the Time-Wait country. besides the fact that, . web additionally allows overriding this habit through environment the ReuseAddress socket choice, yet this can be simply available through the Socket type and never any of the better point sessions: sock. SetSocketOption(SocketOptionLevel. Socket, SocketOptionName. ReuseAddress, 1); So what determines the local/foreign address/port? For a TcpListener, all constructors require that the neighborhood port be speciﬁed. The neighborhood tackle should be speciﬁed to the undefined; another way, the neighborhood deal with is the wildcard (∗ ) tackle. The overseas handle 2 one other state of affairs that doesn't require a convergence of a number of occasions to come across this challenge is a number of multicast receiver consumers working at the related host. ■ five. 6 routines 167 and port for a TcpListener are constantly wildcards. For a TcpClient, all constructors require speciﬁcation of the international tackle and port. The neighborhood tackle and/or port could be speciﬁed to the undefined. three in a different way, the neighborhood handle is the handle of the community interface in which the relationship to the server is demonstrated, and the neighborhood port is a randomly chosen, unused port quantity more than 1023. For a Socket or TcpClient example again by way of an Accept(), AcceptSocket(), or AcceptTcpClient() name, the neighborhood handle is the vacation spot tackle from the preliminary handshake message from the customer, the neighborhood port is the neighborhood port of the server (Socket or TcpListener), and the overseas address/port is the neighborhood address/port of the buyer. For a UdpClient, the neighborhood deal with and/or port will be speciﬁed to the undefined. another way, the neighborhood handle is the wildcard tackle, and the neighborhood port is a randomly chosen, unused port quantity more than 1023. The international deal with and port are at first either wildcards and stay that manner except the Connect() approach is invoked to specify specific values.