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Google Talk是如何工作的?当我连接到我的朋友谈话时,什么充当中间人来转移我的声音?那是它背后的谷歌服务器(充当中间人?还是它提供点对点协议?
他们使用 XMPP ( jabber )
可扩展消息传递和存在协议 (XMPP)
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