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我正在开发基于Windows的聊天应用程序。当客户端首次发送Command类时,服务器会处理它并通过发送另一个Command类来确认客户端。试图反序列化对象时程序挂起
(I有编号的代码段至斑点程序的流程)
一切顺利,直到服务器发回的确认。当代码在客户端(5.)中运行以反序列化并获取确认的副本时,客户端程序无响应。但服务器中的代码(6.)似乎正在工作 - 它成功地序列化了命令。
任何人都可以指出这里有什么错吗?
在此先感谢。
服务器代码:
//1. Server runs first
try
{
BinaryFormatter binaryFormatter = new BinaryFormatter();
//2. Server is blocked here waiting for an incoming stream
Command newCommand = (Command)binaryFormatter.Deserialize(networkStream);
}
catch (Exception ex)
{
MessageBox.Show("EXCEPTION: " + ex.Message);
Console.WriteLine(ex.Message);
}
Client c = new Client(newCommand.ClientName, endPoint,
clientServiceThread, client);
// ...processing the newCommand object
Command command = new Command(CommandType.LIST);
try
{
TcpClient newTcpClient = new TcpClient(newClient.Sock.RemoteEndPoint
as IPEndPoint);
newTcpClient.Connect(newClient.Sock.RemoteEndPoint as IPEndPoint);
NetworkStream newNetworkStream = newTcpClient.GetStream();
BinaryFormatter binaryFormatter = new BinaryFormatter();
//6. Server serializes an instance of the Command class to be recieved by the client
binaryFormatter.Serialize(newNetworkStream, command);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Error");
Console.WriteLine(ex.Message);
newClient.Sock.Close();
newClient.CLThread.Abort();
}
客户端代码:
//3. Client runs second
TcpClient tcpClient = new TcpClient('localhost', 7777);
NetworkStream networkStream = tcpClient.GetStream();
Command newCommand = new Command(CommandType.CONN);
try
{
BinaryFormatter binaryFormatter = new BinaryFormatter();
//4. Client serializes an instance of a Command class to the NetworkStream
binaryFormatter.Serialize(networkStream, newCommand);
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
BinaryFormatter binaryFormatter = new BinaryFormatter();
//5. Then client is blocked until recieve an instance of command class to deserialize
Command serverResponse = (Command)binaryFormatter.Deserialize(networkStream);
clientForm.updateChatMessages(serverResponse);
//7. Instead of recieving the instance of the Command class, the clients go unresponsive
// and the client program hangs.
嗨,不知道这是问题所在,但是当您通过发送和接收数据时,您必须关闭NetworkStream。关闭TcpClient不会释放NetworkStream。 – Cybermaxs
@Cybermaxs感谢您的评论,但什么“当你通过发送”意味着?每次发送命令后,我是否必须关闭NetworkStream? – manas
你能清楚地陈述你的问题吗? –