线程同步和线程暂停\恢复
我正在尝试将文件从本地发送到 FTP，因为我在发送文件之前锁定了 TCPClient。文件发送是在另一个线程中进行的。这样主线程就不会受到影响。
当我在解锁之前尝试使用锁定的 TCPClient 时，它会挂起。那么我应该如何继续，以便在发送文件的同时也可以接收文件。（两个函数位于不同的线程中，但锁定同一个 TCPClient 对象）。
我还想暂停第一个线程并执行第二个线程，然后当第二个线程完成时，然后恢复第一个线程。
请帮助，我迷失在线程中。
I am trying to send the files from local to FTP, for that I am locking the TCPClient before sending the file. And that file sending is doing in another thread. So that the main thread doesn't affected.
As when I try to use the locked TCPClient before Unlocking it, it hangs. So how should I proceed, so that at the same time I can send the file also receive the file.(Both function are in different thread but locks the same TCPClient object).
I am also thinking to pause the first thread and perform second one, then when second complete and the after resume the first one.
Please help, I am lost in threads.
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您不应该在不同线程中使用相同的
TcpClient来执行不同的操作 - 它代表单个连接，因此在两个不同线程上发送和接收的数据会相互干扰。 （即使您在一个中“发送”文件并在另一个中“接收”文件，两者都需要发送和接收数据。）我建议您使用两个不同的
TcpClient实例。You shouldn't use the same
TcpClientfrom different threads to do different things - it represents a single connection, so the data sent and received on the two different threads would interfere with each other. (Even if you're "sending" a file in one and "receiving" a file in the other, both will need to send and receive data.)I suggest you use two different
TcpClientinstances.TCP 是一种双向协议。即使您收到文件，您也始终在发送确认。这意味着 TCP 在一个上下文中工作：有一个接收端和一个发送端。
您不应该在一个实例中混合角色。使用 2 个不同的实例。它们可以并行工作。
TCP is a bi-directionnal protocol. Even if you receive a file, you are sending acknowledgment all along. This means TCP works within a context : there is one receiver end, and one sender end.
You should not mix role within an instance. Use 2 different instances. They can work in parallel.