socket简单demo

Server、Client端分别在两个项目中

 

Server端：

try
{
int port = 4000;
string host = "127.0.0.1";
IPAddress ipa = IPAddress.Parse(host);//将IP字符串转换为IP地址的实例
IPEndPoint ipe = new IPEndPoint(IPAddress.Any, port);//将网络端点表示为ip地址和端口号 允许任意IP
Socket s = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);//创建一个socket类
s.Bind(ipe);//绑定端口号
s.Listen(0);//开始监听
Console.WriteLine("wait for connect");
Socket tmp = s.Accept();//为新连接创建新的socket
Console.WriteLine("get a connect");
while (true)
{
string recvStr = "";
byte[] recvBytes = new byte[1024];
int bytes;
bytes = tmp.Receive(recvBytes, recvBytes.Length, 0);//从客户端接收信息
recvStr += Encoding.ASCII.GetString(recvBytes, 0, bytes);
Console.WriteLine("get message:{0}", recvStr);//把从客户端传来的信息显示出来
string sendStr = "Yeah! Client send message sucessful";
byte[] bs = Encoding.ASCII.GetBytes(sendStr);
tmp.Send(bs, bs.Length, 0);//返回客户端成功信息
//tmp.Close(); 
//s.Close();
}
}
catch (ArgumentNullException ex)
{
Console.WriteLine(ex);

}
catch (SocketException ex)
{ Console.WriteLine(ex); }

Console.WriteLine("press enter to exit");
Console.ReadLine();

 

Client端：

try

            {
                int port = 4000;
                string host = "127.0.0.1";
                IPAddress ipa = IPAddress.Parse(host);
                IPEndPoint ipe = new IPEndPoint(ipa, port);//把ip和端口转化为ipendpoint实例
                Socket s = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);//创建一个socket
                Console.WriteLine("connecting.....");
                s.Connect(ipe);//连接到服务器

                while (true)
                {
                    Console.WriteLine("请输入要发送的信息:");
                    string sendStr = Console.ReadLine();
                    byte[] bs = Encoding.ASCII.GetBytes(sendStr);
                    Console.WriteLine("SendMessage");
                    s.Send(bs, bs.Length, 0);//发送测试信息
                    string recvStr = "";
                    byte[] recvBytes = new byte[1024];
                    int bytes;
                    bytes = s.Receive(recvBytes, recvBytes.Length, 0);//从服务器端接收返回信息
                    recvStr += Encoding.ASCII.GetString(recvBytes, 0, bytes);
                    Console.WriteLine("ClientGetMessage:{0}/r/n/r/n", recvStr);//显示服务器返回信息
                    //s.Close();            

                }
            }
            catch (ArgumentNullException ex)
            { Console.WriteLine(ex); }
            catch (SocketException ex)
            { Console.WriteLine(ex); }
            Console.WriteLine("press enter to exit");
            Console.ReadLine();