Asp.net and c#

Summary: Get a high-level view of the Windows Communication Foundation (WCF) architecture and its key concepts. Code examples demonstrate WCF contracts, endpoints, and behaviors. (17 printed pages) Introduction This document provides a high-level view of the Windows Communication Foundation (WCF) architecture. It is intended to explain key concepts in WCF and how they fit together. There are a few code examples to further illustrate the concepts, but code is not the emphasis of this document. The rest of this document is organized in two main sections: WCF Fundamentals: Covers key concepts in WCF, terms, and architectural components. Code Examples: Provides a few short code examples intended to illustrate and reify the concepts covered in WCF Fundamentals. WCF Fundamentals A WCF Service is a program that exposes a collection of Endpoint s. Each Endpoint is a portal for communicating with the world. A Client is a program that exchanges messages with one or more Endpoints

This article will demostrate a simple file sharing technique between 2 computers using sockets. A client can search and download a file shared by the server and a server can search and download a file shared by the client SERVER Two computers can transfer file with each other over a socket connection. A server computer opens a socket connection and listens on a pre-defined port for imcoming client connection. Once a connection is establised a client and server can handshake using simple commands to search files and initiate a transfer. To being using sockets in the application , use System.Net namespace using System.Net; using System.Net.Sockets; Create the server socket of the type Stream and using the TCP protocol. serversocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); serversocket.Blocking = true ; Bind the Server to the port and keep listening on the port for client connections ..

Introduction In this article, we will learn the basics of socket programming in .NET Framework using C#. Secondly, we will create a small application consisting of a server and a client, which will communicate using TCP and UDP protocols. Pre-requisites Must be familiar with .NET Framework. Should have good knowledge of C#. Basic knowledge of socket programming. 1.1 Networking basics: Inter-Process Communication i.e. the capability of two or more physically connected machines to exchange data, plays a very important role in enterprise software development. TCP/IP is the most common standard adopted for such communication. Under TCP/IP each machine is identified by a unique 4 byte integer referred to as its IP address (usually formatted as 192.168.0.101). For easy remembrance, this IP address is mostly bound to a user-friendly host name. The program below ( showip.cs ) uses the System.Net.Dns class to display the IP address of the machine whose name is passed in the firs