C#Socket(一)

C#Socket基础，欢迎来访！

测试一：

using System;
using System.Collections.Generic;
using System.Text;
using System.Net;
namespace Socket_Learn
{
    /// <summary>
    ///  @author ZJC
    ///  这章主要学习基本的socket一些类的用法，DNS类可以获得主机的名称和ip地址列表
    ///  报文=数据块 。
    ///  报文(message)是网络中交换与传输的数据单元，即站点一次性要发送的数据块。
    ///  报文包含了将要发送的完整的数据信息，其长短很不一致，长度不限且可变。
    ///  报文也是网络传输的单位，传输过程中会不断的封装成分组、包、帧来传输，
    ///  封装的方式就是添加一些信息段，那些就是报文头以一定格式组织起来的数据。
    ///  比如里面有报文类型，报文版本，报文长度，报文实体等等信息。
    /// </summary>
    class Program
    {
        static void Main(string[] args)
        {
            string HostName = Dns.GetHostName();//get this commputer's name
            Console.WriteLine("My computer's name = {0}",HostName);//XX的PC         
            IPHostEntry ipEntry = Dns.GetHostEntry(HostName);//get this conputer's IP address by it's name;
            IPAddress[] addr = ipEntry.AddressList;
            Console.WriteLine("I have get all the addresses in this computer,show it as follows:");
            for (int i = 0; i < addr.Length; i++)
            {
                Console.WriteLine("IP address[{0}]:{1}",i,addr[i].ToString());
                Console.WriteLine("Address's sort:[{0}],{1}",i,addr[i].AddressFamily.ToString());
                //addressfamily:ipv4&ipv6&局域网
            }
                Console.ReadKey();
        }
    }
}

测试二：

using System;
using System.Collections.Generic;
using System.Text;
using System.Net;
using System.Net.Sockets;
namespace SocketLearn2
{
    class Program
    {
        static void Main(string[] args)
        {

            IPAddress ipaddr = IPAddress.Parse("127.0.0.1");                        //IPAddress
            IPEndPoint ipep = new IPEndPoint(ipaddr,8080);                          //creat a IPEndPoint Instance
            Socket test_socket = new Socket(AddressFamily.InterNetwork, 
                                            SocketType.Stream, ProtocolType.Tcp);   //creat a instance of socket

            Console.WriteLine("AddressFamily:{0}",test_socket.AddressFamily);       //print our socket's information
            Console.WriteLine("SocketType:{0}",test_socket.SocketType);
            Console.WriteLine("ProtocolType:{0}",test_socket.ProtocolType);
            Console.WriteLine("Blocking:{0}",test_socket.Blocking);


            test_socket.Blocking = false;                               //change the attriubutes of Socket's instance
            Console.WriteLine("Connected:{0}",test_socket.Connected);

            test_socket.Bind(ipep);                                     //ues Bind() method to connect socket to LocalEndPoint
            IPEndPoint sock_ipe = (IPEndPoint)test_socket.LocalEndPoint;//if not Bind(),will throw a exception.because test_socket.LocalEndPoint = null!
            Console.WriteLine("LocalEndPoint:{0}",sock_ipe.ToString());

            test_socket.Close();                                        //close the socket
            Console.ReadKey();
        }
    }
}