clojure-jack-in : error in process filter: open-network-stream: make client process failed: Connecti

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本文解决了一个 Clojure Jack-in 启动时遇到的连接错误问题，该问题由于主机名设置为 'localhost' 导致 DNS 解析返回实际网络接口而非回环地址。通过将主机名更改为具体的主机名（如 amitava.local），解决了连接被拒绝的问题。

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clojure-jack-in 启动出错

出错信息如下：

Connecting to Swank on port 65280.. [2 times]
error in process filter: open-network-stream: make client process failed: Connection refused, :name, SLIME Lisp, :buffer, nil, :host, localhost, :service, 65280, :nowait, nil
error in process filter: make client process failed: Connection refused, :name, SLIME Lisp, :buffer, nil, :host, localhost, :service, 65280, :nowait, nil

解决办法如下：

My hostname was set to "localhost" which is why the underlying dns lookup was returning the actual interface, not the loopback. Here's the fix：

localhost:~ amitava$ sudo scutil --set HostName amitava.local
amitava:~ amitava$ scutil --get HostName
amitava.local
amitava:~ amitava$ clj
Clojure 1.3.0
user=> (import 'java.net.InetAddress)
java.net.InetAddress
user=> (InetAddress/getByName "localhost")
#<Inet4Address localhost/127.0.0.1>
user=>

详细见：

https://github.com/technomancy/swank-clojure/issues/68