C#网络中的同步
我有一个简单的tcp服务器类C#网络中的同步,c#,tcp,tcpclient,tcpserver,C#,Tcp,Tcpclient,Tcpserver,我有一个简单的tcp服务器类 class Server { private TcpListener tcpListener; private Thread listenThread; public Server() { this.tcpListener = new TcpListener(IPAddress.Parse("127.0.0.1"), 3000); this.listenThread = new Thread(new
class Server
{
private TcpListener tcpListener;
private Thread listenThread;
public Server()
{
this.tcpListener = new TcpListener(IPAddress.Parse("127.0.0.1"), 3000);
this.listenThread = new Thread(new ThreadStart(ListenForClients));
this.listenThread.Start();
Console.WriteLine("Hello");
}
private void ListenForClients()
{
this.tcpListener.Start();
while (true)
{
//blocks until a client has connected to the server
TcpClient client = this.tcpListener.AcceptTcpClient();
//create a thread to handle communication
//with connected client
Thread clientThread = new Thread(new ParameterizedThreadStart(HandleClientComm));
Console.WriteLine("New connexion");
clientThread.Start(client);
}
}
private void HandleClientComm(object client)
{
TcpClient tcpClient = (TcpClient)client;
NetworkStream clientStream = tcpClient.GetStream();
Console.WriteLine("Got Stream");
byte[] message = new byte[4096];
int bytesRead;
Console.WriteLine("Initializing..");
while (true)
{
bytesRead = 0;
try
{
//blocks until a client sends a message
Console.WriteLine("Reading..");
bytesRead = clientStream.Read(message, 0, 4096);
Console.WriteLine("Received something");
}
catch
{
//a socket error has occured
break;
}
if (bytesRead == 0)
{
//the client has disconnected from the server
break;
}
//message has successfully been received
ASCIIEncoding encoder = new ASCIIEncoding();
Console.WriteLine(encoder.GetString(message, 0, bytesRead));
}
tcpClient.Close();
}
}
我只是在main函数中这样调用它:
Server server = new Server();
在一个单独的客户端程序中,我有这个类
class TheClient
{
public void ConnectV2()
{
TcpClient client = new TcpClient();
IPEndPoint serverEndPoint = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 3000);
client.Connect(serverEndPoint);
NetworkStream clientStream = client.GetStream();
ASCIIEncoding encoder = new ASCIIEncoding();
for (int i = 0; i < 20; i++)
{
byte[] buffer = encoder.GetBytes("Hello Server! " + i.ToString() + " ");
Console.WriteLine("Processing..");
clientStream.Write(buffer, 0, buffer.Length);
clientStream.Flush();
Console.WriteLine("Hello Server sent");
}
}
}
我的问题是服务器程序似乎比客户端慢,在客户端发出13或更多消息之前,他不会做出反应:
[由于声誉问题,我无法发布图片]
它一次读取前十几条消息,然后逐个读取其他消息
如果我让服务器先发出消息,客户端会收到消息,但它们都会停止,就像两个都在等待另一个发送消息一样
有人能给我解释一下这种行为吗?我如何控制和同步它?这是因为您的客户端AP始终在发送数据,但您的服务器AP无法立即接收这些数据。所以,这些数据堆叠在缓冲区中,然后服务器AP一次接收所有数据 您可以尝试:
TCP不是基于消息的。它提供一个字节流。您有责任将信息分开。还要注意的是,在一次
Read
呼叫中,您可能只收到消息的一部分
这里有一个简单的方法:将消息作为单独的行发送。可能使用StreamWriter
。使用StreamReader.ReadLine()
接收消息
这样,您还可以使用更合理的编码,例如encoding.UTF8
除此之外,您的代码实际上是良好的和可行的。在堆栈溢出上几乎看不到工作的TCP代码。大多数代码都被严重破坏了。祝贺您。值得一提的是,“每个连接的客户端1个线程”的扩展性不太好。我不能接受它的优点,我是从网上的一个教程中获得的,我只是玩了一点来理解它。这一定是web上第一个展示漂亮套接字代码的教程。你有链接吗?我刚试过,它像沙姆一样工作。您犯了一个小错误,它是
StreamReader.ReadLine()
而不是StreamWriter.ReadLine()
。谢谢
TheClient tc = new TheClient();
tc.ConnectV2();