A client connects to the server, usually on TCP port 80, and makes a simple request using the HTTP protocol.

客户机连接服务器(通常通过TCP端口80)，使用HTTP协议发出一个简单的请求。

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XMPP is a relatively simple protocol that occurs over TCP sockets using XML messages.

XMPP是一个相对简单的协议，它通过XML消息出现在tcp套接字上。

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By default, there is support for in-process, IPC, multicast, and TCP, and switching between all of them is as simple as changing the prefix on your connection string.

缺省情况下支持进程内通讯、IPC、广播和TCP。此外，协议间切换非常简单，仅需更改连接字符串的前缀即可。

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