using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Net.Sockets; using Sy... ...
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Net.Sockets; using System.IO; using System.Net; namespace ConsoleApp396 { class Program { private static Socket ConnectSocket(string server,int port) { Socket s = null; IPHostEntry hostEntry = null; //Get host related information hostEntry = Dns.GetHostEntry(server); foreach(IPAddress address in hostEntry.AddressList) { IPEndPoint ipe = new IPEndPoint(address, port); Socket tempSocket = new Socket(ipe.AddressFamily, SocketType.Stream, ProtocolType.Tcp); tempSocket.Connect(ipe); if (tempSocket.Connected) { s = tempSocket; break; } else { continue; } } return s; } private static string SocketSendReceive(string server,int port) { string request = "GET / HTTP/1.1\r\nHost: " + server + "\r\nConnection:Close\r\n\r\n"; byte[] bytesSent = Encoding.ASCII.GetBytes(request); byte[] bytesReceived = new byte[256]; string page = ""; using(Socket s = ConnectSocket(server, port)) { if(s==null) { return ("Connection failed!"); } s.Send(bytesSent, bytesSent.Length, 0); int bytes = 0; page = "Default HTML page on " + server + ":\r\n"; do { bytes = s.Receive(bytesReceived, bytesReceived.Length, 0); page = page + Encoding.ASCII.GetString(bytesReceived, 0, bytes); } while (bytes > 0); } return page; } public static void Main(string[] args) { string host; int port = 80; if(args.Length==0) { host = Dns.GetHostName(); } else { host = args[0]; } string result = SocketSendReceive(host, port); Console.WriteLine(result); Console.ReadLine(); } } }