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C#通过socket 套接字进行客户端与服务器数据传输;
static void SendMessage()
{
try
{
while (true)
{
Console.WriteLine("等待发送信息,回车->发送,close->断开连接");
string s = Console.ReadLine();
foreach (Socket client in clients.Values)
{
client.Send(Encoding.Default.GetBytes(s));
}
Console.WriteLine("发送成功!\n");
if (s == "close")
{
client.Close();
break;
}
}
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
}
static void CreateServer()
{
server = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
IPAddress iPAddress = IPAddress.Any;
int port = 9003;
EndPoint endPoint = new IPEndPoint(iPAddress, port);
server.Bind(endPoint);
server.Listen(8);
Console.WriteLine("tcp端口已经打开,192.144.215.243:9003");
DisplayAllClients();
}
static void Accept(Object obj)
{
Socket socket = (Socket)obj;
while (true)
{
client = socket.Accept();
string ip = client.RemoteEndPoint.ToString();
if (!clients.ContainsKey(ip))
{
clients.Add(ip, client);
Console.WriteLine(ip "已连接");
DisplayAllClients();
}
new Thread(() =>
{
try
{
Recieve(client);
}
catch (Exception e)
{
Console.WriteLine(e.Message);
clients.Remove(ip);
}
})
{ IsBackground = true }.Start();
}
}
static void Recieve(Object obj)
{
Socket client = (Socket)obj;
while (true)
{
try
{
byte[] buffer = new byte[1024 * 1024 * 8];
int length = client.Receive(buffer);
string message = Encoding.Default.GetString(buffer, 0, length);
Console.WriteLine(client.RemoteEndPoint.ToString() ":" message);
if (message == null || message.Length == 0 || message == "close")
{
string ip = client.RemoteEndPoint.ToString();
Console.WriteLine(ip "连接断开!");
clients.Remove(ip);
DisplayAllClients();
break;
}
}
catch (Exception e)
{
Console.WriteLine(e.Message);
clients.Remove(client.RemoteEndPoint.ToString());
DisplayAllClients();
break;
}
}
}
///显示所有连接客户端
static void DisplayAllClients()
{
if (clients.Values.Count == 0)
{
Console.WriteLine("目前无连接");
Console.WriteLine("等待新的连接");
}
else
{
Console.WriteLine("目前所有连接");
Console.WriteLine(" ========== ");
foreach (Socket client in clients.Values)
{
Console.WriteLine(client.RemoteEndPoint.ToString());
}
Console.WriteLine(" ========== ");
Console.WriteLine();
}
}
}