In normal HTTP communication, the client always initiates the data transfer by opening a connection to the server and sending a request.
在普通HTTP通信中，客户端始终通过打开到服务器的连接并发送请求来发起数据传输。
In normal HTTP communication, the client always initiates the data transfer by opening a connection to the server and sending a request.
在普通HTTP通信中，客户端始终通过打开到服务器的连接并发送请求来发起数据传输。
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