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Networking in C#
The .NET Framework has a layered, extensible, and managed implementation of networking services. You can easily integrate them into your applications. Use the System.Net; namespace.
Let us see how to acess the Uri class:.In C#, it provides object representation of a uniform resource identifier (URI) −
Uri uri = new Uri("http://www.example.com/"); WebRequest w = WebRequest.Create(uri);
Let us now see the System.Net class. This is used to encorypt connections using using the Secure Socket Layer (SSL). If the URI begins with "https:", SSL is used; if the URI begins with "http:", an unencrypted connection is used.
The following is an example. For SSL with FTP, set the EnableSsl property to true before calling the GetResponse() method.
String uri = "https://www.example.com/"; WebRequest w = WebRequest.Create(uri); String uriServer = "ftp://ftp.example.com/new.txt" FtpWebRequest r = (FtpWebRequest)WebRequest.Create(uriServer); r.EnableSsl = true; r.Method = WebRequestMethods.Ftp.DeleteFile;
The following is an example showing the usage of System.Net namespace and using the Dns.GetHostEntry, Dns.GetHostName methods and IPHostEntry property AddressList −
Example
using System; using System.Net; class Program { static void Main() { String hostName = string.Empty; hostName = Dns.GetHostName(); Console.WriteLine("Hostname: "+hostName); IPHostEntry myIP = Dns.GetHostEntry(hostName); IPAddress[] address = myIP.AddressList; for (int i = 0; i < address.Length; i++) { Console.WriteLine("IP Address {1} : ",address[i].ToString()); } Console.ReadLine(); } }