Since HTTP is a request-response protocol, the chat server cannot push new messages to the client.

因为HTTP是一个请求-响应协议，所以聊天服务器不能把新消息发给客户。

youdao

Since HTTP is a request-response protocol, the chat server cannot push new messages to the client.

因为HTTP是一个请求-响应协议，所以聊天服务器不能把新消息发给客户。

youdao