The protocol design has to take care of tracking pending requests and identifying which request the response corresponds to.
协议设计必须考虑跟踪挂起的请求，并确定某个响应对应于哪个请求。
But instead of sending any response to the client as a result of the exception, the request is held in a queue of pending Continuations, and the HTTP connection is kept open.
但是发生该异常之后并没有将响应发送给客户机，请求被放到处于等待状态的Continuation队列中，而HTTP连接仍然保持打开状态。
The second, known as piggyback, doesn't create any connections to the server. Instead, it waits until another DWR service call occurs and piggybacks pending events onto this request's response.
第二种称为piggyback，这种机制并不创建任何到服务器的连接，相反，将一直等待直至发生另一个DWR服务，piggybacks使事件等待该请求的响应。
In response, FIFA suspended the ban pending further studies.
作为回复，FIFA将这个禁令暂停以待后续研究。
In this case, the receiver of the request subaction generates a 'pending acknowledge' to signal the requester node that the message has been well received, and that a response subaction will follow.
这样，请求子处理的接收者生成一个“未决回应”通知请求节点消息已经收到，随后跟一个响应子处理。
In this case, the receiver of the request subaction generates a 'pending acknowledge' to signal the requester node that the message has been well received, and that a response subaction will follow.
这样，请求子处理的接收者生成一个“未决回应”通知请求节点消息已经收到，随后跟一个响应子处理。
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