我正在尝试做一个通过套接字进行通信的客户端服务器应用程序,并且使用BinaryFormatter将其消息序列化并反序列化。我的代码被冻结,并且在进行反序列化时绝对不执行任何操作,而且我也不例外,因为我也没有例外。我也无法介入调试器,一切都冻结了。这是我的代码:
public class Serializer
{
public static MemoryStream ToStream(object obj)
{
var stream = new MemoryStream();
var formatter = new BinaryFormatter();
formatter.Serialize(stream, obj);
return stream;
}
public static object FromStream(MemoryStream stream)
{
Console.WriteLine("Starting from stream");
var formatter = new BinaryFormatter();
stream.Seek(0, SeekOrigin.Begin);
object rez = formatter.Deserialize(stream); //NEVER GOES OVER THIS
Console.WriteLine("Starting deserialization" + rez);
return formatter.Deserialize(stream);
}
}
public class Connection
{
private Socket socket;
public Connection(Socket socket)
{
this.socket = socket;
Console.WriteLine($"Connected to client: {socket.RemoteEndPoint}");
Task.Factory.StartNew(() => Execute(socket));
}
private void Execute(Socket socket)
{
while (true)
{
var buffer = new byte[2048];
var bytesCount = socket.Receive(buffer);
if(bytesCount != 0)
{
var msgReceived = (Message)Serializer.FromStream(new MemoryStream(buffer, 0, buffer.Length));
Console.WriteLine($"Received msg: {msgReceived.Content}");
}
/* var msg = new Message { Content = "Hello World2!" };
Console.WriteLine($"Sending msg with content: {msg.Content}");
MemoryStream stream = Serializer.ToStream(msg);
var bytesSent = socket.Send(stream.GetBuffer());*/
Console.WriteLine("Trying again");
Thread.Sleep(500);
}
}
客户代码:
var host = Dns.GetHostEntry("localhost");
var ipAddress = host.AddressList.First();
var serverEndpoint = new IPEndPoint(ipAddress, 9000);
Socket serverSocket = new Socket(ipAddress.AddressFamily, SocketType.Stream, ProtocolType.Tcp);
serverSocket.Connect(serverEndpoint);
Console.WriteLine($"Successfully connected to server on: {serverSocket.RemoteEndPoint}");
while (true)
{
var msg = new Message { Content = "Hello World!" };
Console.WriteLine($"Sending msg with content: {msg.Content}");
MemoryStream stream = Serializer.ToStream(msg);
var bytesSent = serverSocket.Send(stream.GetBuffer());
Console.WriteLine("Waiting to receive");
var buffer = new byte[2048];
int bytesReceived = serverSocket.Receive(buffer);
if (bytesReceived != 0)
{
var receivedMessage = (Message)Serializer.FromStream(new MemoryStream(buffer));
Console.WriteLine($"Received message: {receivedMessage.Content}");
}
Console.WriteLine("Received done");
}
服务器代码:
var host = Dns.GetHostEntry("localhost");
var ipAddress = host.AddressList.First();
var localEndPoint = new IPEndPoint(ipAddress, 9000);
var serverSocket = new Socket(ipAddress.AddressFamily, SocketType.Stream, ProtocolType.Tcp);
serverSocket.Bind(localEndPoint);
serverSocket.Listen(1);
while (true)
{
Console.WriteLine("Waiting for client");
Socket clientSocket = serverSocket.Accept();
var connection = new Connection(clientSocket);
}
我还检查了byteCount,它们正到达服务器,缓冲区也不为空,我不明白为什么反序列化什么也不做。
您两次调用反序列化,我认为这里有问题:
我认为您可以使用类似的方法:
另外,发送/接收方法是同步的,它们会阻止线程执行。
The description of the asynchronous option is here https://docs.microsoft.com/en-us/dotnet/framework/network-programming/using-an-asynchronous-client-socket
Only one piece of code can run at the same time. While that infinute loop
while (true)
runs, no other code will ever be able to run.您将需要向该项目添加一些多任务处理。每个字处理器所需的最小数量。但是,您似乎也正在控制台中进行编程。从我的经验来看,控制台和多任务处理并不能很好地融合在一起。您需要保持程序运行,而不阻塞输入。
我对学习多任务处理的建议是Windows窗体中的BackgroundWorker。 BGW是过时的,在这里不需要使用线程,因此不应在生产代码中使用。但这也许是我了解的用于多任务和线程处理的最佳“训练轮”。