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我怎么知道 juliet@verona.it/balkony(完整的 JID!)在线/仍然可以通过 smack 获得?
订阅juliet@verona.it的存在,通过发送您自己的存在来上网,看看您是否收到了一个存在节。查询存在实际上并没有多大意义。把它想象成在某个时间点进入朱丽叶的存在之流。
juliet@verona.it