Question

C# 客户端与服务器 控制台代码

用C#控制台编写，要求，服务器可以同时处理多个客户端的请求，一个客户端可以同时分多个线程给服务器发送请求。我要代码和解释！！！写的好加分！！！急！

Answer 1

private TcpClient client = null;
private TcpListener server = null;

private bool stopped = false;
private void button1_Click(object sender, EventArgs e)
{
//IPAddress localIp = Dns.GetHostAddresses("localhost")[0];
server = new TcpListener(12345);
server.Start();
showInfo("服务端启动 ..");

Thread thServer = new Thread(serverHandler) { IsBackground = true};
thServer.Start(server);

client = new TcpClient();
client.Connect("127.0.0.1", 12345);
if (client.Connected)
showInfo("客户端已经连接: " + client.Client.RemoteEndPoint.ToString());
else
showInfo("未连接上服务端.");
if (client.Connected)
{
Thread th = new Thread(clientHandler) { IsBackground = true };
th.Start(client);
}
}

private void serverHandler(object obj)
{
TcpListener svr = (TcpListener)obj;
while (!stopped)
{
try
{
TcpClient tcpClient=null;
if (svr.Pending())
{
tcpClient = svr.AcceptTcpClient();
Thread th = new Thread(serverClientHandler) { IsBackground = true };
th.Start(tcpClient);
showInfo("服务端接收连接, 并开始通讯: " + tcpClient.Client.RemoteEndPoint.ToString());
}
else
{
showInfo("暂时无连接请求:");
Thread.Sleep(60000);
}
}
catch(Exception ex)
{
showInfo("服务端监听连接异常: " + ex.Message);
Thread.Sleep(1000);
}
}

}

// 服务端处理连接
private void serverClientHandler(object obj)
{
byte[] buf = new byte[1024];
TcpClient client = (TcpClient)obj;
while (!stopped && client.Connected)
{
try
{
showInfo("等待客户端指令 ..");
int count = client.Client.Receive(buf);
if (count > 0)
{
//parse
string cmd = Encoding.Default.GetString(buf, 0, count);
showInfo("收到客户端指令: " +cmd);

switch (cmd)
{
case "OK":
client.Client.Send(Encoding.Default.GetBytes(cmd));
break;
default:
break;
}
}
}
catch (Exception ex)
{
showInfo("接收客户端指令超时: " + ex.Message);
}
}
}

// 客户端处理连接
private void clientHandler(object obj)
{
byte[] buf = new byte[1024];
TcpClient client = (TcpClient)obj;
client.Client.Send(Encoding.Default.GetBytes("OK"));
while (!stopped && client.Connected)
{
try
{
int count = client.Client.Receive(buf);
if (count > 0)
{
//parse
}
}
catch (Exception ex)
{
showInfo("接收服务端数据超时: " + ex.Message);
}
}

}

Answer 2

这个就是：private TcpClient client = null;
private TcpListener server = null;

private bool stopped = false;
private void button1_Click(object sender, EventArgs e)
{
server = new TcpListener(12345);
server.Start();
showInfo("服务端启动 ..");

Thread thServer = new Thread(serverHandler) { IsBackground = true};
thServer.Start(server);

client = new TcpClient();
client.Connect("127.0.0.1", 12345);
if (client.Connected)
showInfo("客户端已经连接: " + client.Client.RemoteEndPoint.ToString());
else
showInfo("未连接上服务端.");
if (client.Connected)
{
Thread th = new Thread(clientHandler) { IsBackground = true };
th.Start(client);
}
}

private void serverHandler(object obj)
{
TcpListener svr = (TcpListener)obj;
while (!stopped)
{
try
{
TcpClient tcpClient=null;
if (svr.Pending())
{
tcpClient = svr.AcceptTcpClient();
Thread th = new Thread(serverClientHandler) { IsBackground = true };
th.Start(tcpClient);
showInfo("服务端接收连接, 并开始通讯: " + tcpClient.Client.RemoteEndPoint.ToString());
}
else
{
showInfo("暂时无连接请求:");
Thread.Sleep(60000);
}
}
catch(Exception ex)
{
showInfo("服务端监听连接异常: " + ex.Message);
Thread.Sleep(1000);
}
}

}

// 服务端处理连接
private void serverClientHandler(object obj)
{
byte[] buf = new byte[1024];
TcpClient client = (TcpClient)obj;
while (!stopped && client.Connected)
{
try
{
showInfo("等待客户端指令 ..");
int count = client.Client.Receive(buf);
if (count > 0)
{
//parse
string cmd = Encoding.Default.GetString(buf, 0, count);
showInfo("收到客户端指令: " +cmd);

switch (cmd)
{
case "OK":
client.Client.Send(Encoding.Default.GetBytes(cmd));
break;
default:
break;
}
}
}
catch (Exception ex)
{
showInfo("接收客户端指令超时: " + ex.Message);
}
}
}

// 客户端处理连接
private void clientHandler(object obj)
{
byte[] buf = new byte[1024];
TcpClient client = (TcpClient)obj;
client.Client.Send(Encoding.Default.GetBytes("OK"));
while (!stopped && client.Connected)
{
try
{
int count = client.Client.Receive(buf);
if (count > 0)
{
//parse
}
}
catch (Exception ex)
{
showInfo("接收服务端数据超时: " + ex.Message);
}
}

}

Answer 3

下面这个大牛的博客有详细的讲解，你可以去看看，研究一下，比直接看代码会有收获。有两篇文章，下面这个是part1，还一个part2在博客底部下一篇中能看到。