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rpc主动拒绝有哪些可能导致的

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rpc主动拒绝有哪些可能导致的

我本地可以请求，但是拉到服务器上就拒绝请求了，这是为什么，我对应的端口也开了
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by (71.8m points)

看报错是connection refused，像是服务端没有监听。
确保服务正常启动，监听ip地址是外部可访问的吗（别是127.0.0.1）？
防火墙禁止了端口，或者配置了白名单或者黑名单？线上服务器通常对外只开放部分端口。本地telnet试试端口是否通的？


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