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'cider-jack-in'中止“协议系列不可用”

[英]`cider-jack-in' aborts with 'Protocol family unavailable'

原文 2017-08-12 22:20:34 0 1 emacs/ clojure/ cider

When I run cider-jack-in I get a SocketException with Protocol family unavailable as the exception message. 当我运行cider-jack-in我得到一个SocketException其中Protocol family unavailable可用作异常消息。

lein repl runs fine on the command line. lein repl在命令行上运行正常。

I've web-searched and found no matches containing both 'cider' and 'SocketException', which is always worrying. 我进行了网络搜索，发现没有包含'cider'和'SocketException'的匹配，这总是令人担忧。 Nothing obvious came up in a search of the github project nor in the list of possibly-related questions presented here by StackOverflow as I'm writing this. 在我写这篇文章的过程中，在搜索github项目时，以及StackOverflow在此处提供的可能相关问题列表中都没有显而易见的事情。

I get the same error whether I have a project file loaded or not. 无论是否加载了项目文件，我都会得到同样的错误。

My Emacs session tends to be extremely long-running (months) but I've checked and the problem still recurs identically after a restart. 我的Emacs会话往往是非常长时间运行（几个月），但我已经检查过，重启后问题仍然相同。

Things I thought of that might be at play but I think I can discount: 我想到的事情可能在起作用，但我想我可以打折：

AFAIK no hosts on the subnet (this host among them) have IPv6 configured on any interface. AFAIK子网上没有主机（其中的主机）在任何接口上都配置了IPv6。
This Emacs is running on the same host as a Squid proxy server, but (getenv "no_proxy") returns a comma-delimited string that includes both localhost and 127.0.0.0/16 , so no connection to the proxy server should be requested as part of connecting to an nrepl server on the same host. 此Emacs与Squid代理服务器在同一主机上运行，但(getenv "no_proxy")返回逗号分隔的字符串，其中包含localhost和127.0.0.0/16 ，因此不应请求与代理服务器的连接作为部分连接到同一主机上的nrepl服务器。
This host has a heavily customized /etc/hosts file, but no IPv6 address mappings are enabled. 此主机具有大量自定义的/etc/hosts文件，但未启用IPv6地址映射。

In other words it should be a "pure" IPv4 host. 换句话说，它应该是一个“纯粹的”IPv4主机。

emacs-version : 24.5.1 emacs-version ：24.5.1

cider-version : 0.15.1-snapshot cider-version ：0.15.1快照

OS: Linux this-host 4.8.0-2-amd64 #1 SMP Debian 4.8.11-1 (2016-12-02) x86_64 GNU/Linux 操作系统：Linux本主机4.8.0-2-amd64＃1 SMP Debian 4.8.11-1（2016-12-02）x86_64 GNU / Linux

Stack trace header: 堆栈跟踪头：

error in process sentinel: nrepl-server-sentinel: Could not start nREPL server: Exception in thread "main" java.net.SocketException: Protocol family unavailable, compiling:(/tmp/form-init7765774181037314573.clj:1:73)

What's wrong? 怎么了？

1 个解决方案

I doubt that cider knows or cares whether your system is purely ipv4; 我怀疑苹果酒是否知道或关心你的系统是否纯粹是ipv4; it still seems to default to attempting use ipv6, shown in cider's startup messaging as lein ... repl ... :host :: (the :: being ipv6 equivalent notation to localhost). 它似乎仍然默认尝试使用IPv6，苹果酒的启动消息显示为lein ... repl ... :host :: （该::是的IPv6相当于符号为localhost）。 For my situation, it was simple enough to just enable ipv6 on my system, but you could instead follow suggestions in this issue to set cider-lein-parameters to repl :headless :host localhost . 对于我的情况，在我的系统上启用ipv6很简单，但你可以按照这个问题中的建议来设置cider-lein-parameters to repl :headless :host localhost 。