Using C # to implement Sslsocket encrypted communication Https

Original link
http://blog.csdn.net/wuyb_2004/article/details/51393290

Using System;
Using System.Collections;
Using System.Net.Security;
Using System.Net.Sockets;
Using System.Security.Authentication;
Using System.Text;
Using System.Security.Cryptography.X509Certificates;

Namespace examples.system.net{public class Ssltcpclient {private static Hashtable certificateerrors = new H        Ashtable ();        The following method is invoked by the remotecertificatevalidationdelegate.              public static bool Validateservercertificate (object sender, X509Certificate certificate, X509chain chain, sslpolicyerrors sslpolicyerrors) {if (sslpolicyerrors = = Sslpolicy            Errors.none) return true;            Console.WriteLine ("Certificate error: {0}", sslpolicyerrors);            Do not allow the this client to communicate with unauthenticated servers.        return false;            } public static void Runclient (string machinename) {//Create a TCP/IP client socket.            MachineName is the host running the server application.            TcpClient client = new TcpClient (machinename, 901);    Console.WriteLine ("Client connected.");        Create an SSL stream, that would close the client ' s stream. SslStream SslStream = new SslStream (client.            GetStream (), False, new Remotecertificatevalidationcallback (validateservercertificate), null);            The server name must match the name on the server certificate.            X509store store = new X509store (storename.root); Store.            Open (Openflags.readwrite); Retrieve certificate X509Certificate2Collection certs = store.                            Certificates.find (X509findtype.findbysubjectname, "TestClient", false);            try {sslstream.authenticateasclient ("TestServer", Certs, Sslprotocols.tls, false);                 } catch (Authenticationexception e) {Console.WriteLine ("Exception: {0}", e.message); if (e.innerexception! = null) {Console.WriteLine ("Inner exception: {0}"                , e.innerexception.message); } CoNsole.                WriteLine ("Authentication failed-closing the connection."); Client.                Close ();            Return            }//Encode a test message into a byte array.            Signal the end of the message using the "<EOF>".            byte[] messsage = Encoding.UTF8.GetBytes ("Hello from the Client.<eof>");             Send Hello message to the server.            Sslstream.write (messsage);            Sslstream.flush ();            Read message from the server.            String servermessage = Readmessage (SslStream);            Console.WriteLine ("Server says: {0}", servermessage);            Messsage = Encoding.UTF8.GetBytes ("Exit");            Sslstream.write (messsage);            Sslstream.flush ();            Close the client connection. Client.            Close ();        Console.WriteLine ("Client closed.");    } static string Readmessage (SslStream SslStream) {//Read the message sent by the server.        The end of the message is signaled using the//"<EOF>" marker.            byte[] buffer = new byte[2048];            StringBuilder messagedata = new StringBuilder ();            int bytes =-1; do {bytes = sslstream.read (buffer, 0, buffer.                Length);                Use Decoder class to convert from bytes to UTF8//In case a character spans and buffers.                Decoder Decoder = Encoding.UTF8.GetDecoder (); char[] chars = new Char[decoder.                GetCharCount (buffer, 0, bytes)]; Decoder.                GetChars (buffer, 0, bytes, chars, 0);                Messagedata.append (chars);                Check for EOF. if (messagedata.tostring ().                IndexOf ("<EOF>")! =-1) {break;            }} while (bytes! = 0);        return messagedata.tostring (); } private static void Displayusage () {Console.WriteLine ("To start the client specify:");            Console.WriteLine ("Clientsync MachineName [ServerName]");        Environment.exit (1);            public static void Main (string[] args) {string machinename = NULL;            MachineName = "192.168.1.25";            try {runclient (machinename); } catch (Exception ex) {Console.WriteLine (ex.            Message);        } console.readline (); }    }}

Using C # to implement Sslsocket encrypted communication Https