基本顺序是服务器(应用程序)启动，等待客户端发出请求。
The basic sequence is that a server (application) is started, which waits for the client to make a request.
然而，如果服务器没有任何信息，它将保持请求并等待客户端可用的更新信息。
However, if the server does not have any information, it holds the request and waits for an update to be available for the client.
SQS主要用于分布式系统间的通讯，把消息发送并存储到队列中，等待客户端使用。
SQS is used by distributed applications to communicate by sending messages to queues where they are stored awaiting to be consumed by clients.
包含TCPIPServer Input节点的消息流将侦听端口，等待客户端应用程序的连接尝试。
A message flow that contains a TCPIPServer Input node listens on a port, waiting for a client application to try to connect.
FinchSync的PC端作为服务端，等待客户端(Pocket PC)的连接并开始进行同步。
The PC side of FinchSync ACTS as server, waiting for a client (the Pocket PC) to connect and start the synchronization process.
当缺少一种机制来通知你的应用程序所发生的这种情况：“连接已经建立了，正在等待客户端数据”，这将意味着有可能出现客户端只发出连接请求，但是不发送数据。
However, the application is not notified that a connection has been accepted before data is received. That means a client could connect to your server and not send any data.
当缺少一种机制来通知你的应用程序所发生的这种情况：“连接已经建立了，正在等待客户端数据”，这将意味着有可能出现客户端只发出连接请求，但是不发送数据。
However, the application is not notified that a connection has been accepted before data is received. That means a client could connect to your server and not send any data.
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