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标题不重要,看图!
source link: https://www.oschina.net/question/2915446_2320629
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标题不重要,看图! - OSCHINA
程进凯
46分钟前
内网主轮询一个key(设置TTL),不存在时正常业务,存在则拒绝所有连接。 ABCD成功连接外网就给该key设置一个值并更新TTL,ABCD长时间连不上外网时,key过期,内网主又恢复工作。
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