首页 \ 问答 \ 地址已经在使用 - bind（2）（Errno :: EADDRINUSE）(Address already in use - bind(2) (Errno::EADDRINUSE))

地址已经在使用 - bind（2）（Errno :: EADDRINUSE）(Address already in use - bind(2) (Errno::EADDRINUSE))

 我正在尝试使用Puma Web服务器部署Rails应用程序。 当尝试使用配置文件bundle exec puma -C config/puma.rb启动Puma服务器bundle exec puma -C config/puma.rb我收到一个错误，该地址已被使用。 
 

 有人知道如何解决这个问题吗？ 
 

bundle exec puma -C config/puma.rb
[23699] Puma starting in cluster mode...
[23699] * Version 2.11.3 (ruby 2.0.0-p353), codename: Intrepid Squirrel
[23699] * Min threads: 5, max threads: 5
[23699] * Environment: development
[23699] * Process workers: 2
[23699] * Preloading application
Jdbc-MySQL is only for use with JRuby
[23699] * Listening on tcp://0.0.0.0:3000
/.rvm/gems/ruby-2.0.0-p353/gems/puma-2.11.3/lib/puma/binder.rb:210:in `initialize': Address already in use - bind(2) (Errno::EADDRINUSE)
    from /.rvm/gems/ruby-2.0.0-p353/gems/puma-2.11.3/lib/puma/binder.rb:210:in `new'
    from /Users/lexi87/.rvm/gems/ruby-2.0.0-p353/gems/puma-2.11.3/lib/puma/binder.rb:210:in `add_tcp_listener'
    from /.rvm/gems/ruby-2.0.0-p353/gems/puma-2.11.3/lib/puma/binder.rb:96:in `block in parse'
    from /.rvm/gems/ruby-2.0.0-p353/gems/puma-2.11.3/lib/puma/binder.rb:82:in `each'
    from /.rvm/gems/ruby-2.0.0-p353/gems/puma-2.11.3/lib/puma/binder.rb:82:in `parse'
    from /.rvm/gems/ruby-2.0.0-p353/gems/puma-2.11.3/lib/puma/runner.rb:119:in `load_and_bind'
    from /.rvm/gems/ruby-2.0.0-p353/gems/puma-2.11.3/lib/puma/cluster.rb:302:in `run'
    from /.rvm/gems/ruby-2.0.0-p353/gems/puma-2.11.3/lib/puma/cli.rb:216:in `run'
    from /rvm/gems/ruby-2.0.0-p353/gems/puma-2.11.3/bin/puma:10:in `<top (required)>'
    from /.rvm/gems/ruby-2.0.0-p353/bin/puma:23:in `load'
    from /.rvm/gems/ruby-2.0.0-p353/bin/puma:23:in `<main>'
    from /.rvm/gems/ruby-2.0.0-p353/bin/ruby_executable_hooks:15:in `eval'
    from /.rvm/gems/ruby-2.0.0-p353/bin/ruby_executable_hooks:15:in `<main>'


I am trying to deploy Rails app with the Puma web server. When trying to start Puma server with a config file bundle exec puma -C config/puma.rb I get an error that the address is already in use.
 

Does someone know how to fix this?
 

bundle exec puma -C config/puma.rb
[23699] Puma starting in cluster mode...
[23699] * Version 2.11.3 (ruby 2.0.0-p353), codename: Intrepid Squirrel
[23699] * Min threads: 5, max threads: 5
[23699] * Environment: development
[23699] * Process workers: 2
[23699] * Preloading application
Jdbc-MySQL is only for use with JRuby
[23699] * Listening on tcp://0.0.0.0:3000
/.rvm/gems/ruby-2.0.0-p353/gems/puma-2.11.3/lib/puma/binder.rb:210:in `initialize': Address already in use - bind(2) (Errno::EADDRINUSE)
    from /.rvm/gems/ruby-2.0.0-p353/gems/puma-2.11.3/lib/puma/binder.rb:210:in `new'
    from /Users/lexi87/.rvm/gems/ruby-2.0.0-p353/gems/puma-2.11.3/lib/puma/binder.rb:210:in `add_tcp_listener'
    from /.rvm/gems/ruby-2.0.0-p353/gems/puma-2.11.3/lib/puma/binder.rb:96:in `block in parse'
    from /.rvm/gems/ruby-2.0.0-p353/gems/puma-2.11.3/lib/puma/binder.rb:82:in `each'
    from /.rvm/gems/ruby-2.0.0-p353/gems/puma-2.11.3/lib/puma/binder.rb:82:in `parse'
    from /.rvm/gems/ruby-2.0.0-p353/gems/puma-2.11.3/lib/puma/runner.rb:119:in `load_and_bind'
    from /.rvm/gems/ruby-2.0.0-p353/gems/puma-2.11.3/lib/puma/cluster.rb:302:in `run'
    from /.rvm/gems/ruby-2.0.0-p353/gems/puma-2.11.3/lib/puma/cli.rb:216:in `run'
    from /rvm/gems/ruby-2.0.0-p353/gems/puma-2.11.3/bin/puma:10:in `<top (required)>'
    from /.rvm/gems/ruby-2.0.0-p353/bin/puma:23:in `load'
    from /.rvm/gems/ruby-2.0.0-p353/bin/puma:23:in `<main>'
    from /.rvm/gems/ruby-2.0.0-p353/bin/ruby_executable_hooks:15:in `eval'
    from /.rvm/gems/ruby-2.0.0-p353/bin/ruby_executable_hooks:15:in `<main>'


原文：https://stackoverflow.com/questions/31039998
更新时间：2022-08-20 14:08

最满意答案

 首先看时间= 0秒，因此，它可能/可能不会导致执行，可能是第0次机会（没机会）浏览器应该在0秒内重新加载当前页面 
 

 以及使用元刷新标签的一些缺点 
 

 元刷新标签有一些缺点： 
 


 垃圾邮件发送者使用元刷新重定向来欺骗搜索引擎。 因此搜索引擎会从其数据库中删除这些网站。 如果您使用大量元刷新标记来重定向页面，搜索引擎可能会决定您的网站是垃圾邮件并将其从索引中删除。 最好使用301服务器重定向。 

 如果重定向很快发生（少于2-3秒），使用旧版浏览器的读者无法点击“返回”按钮。 这是一个可用性问题。 
 如果重定向很快发生并转到不存在的页面，您的读者可能会陷入循环而不会看到除404页面之外的任何内容。 当这种情况发生时，大多数人只是放弃而不是试图找出你试图把它们拿走的地方。 
 刷新当前页面可能会让人感到困惑。 如果他们没有请求重新加载，有些人可能会担心安全问题。 
 

 为什么wint你使用javascript超时？ 
 

    <script language=”javascript” type=”text/javascript”>
   setTimeout(function () {
       window.location.href = "tea.html"; //will redirect to your blog page (an ex:                  tea.html)
    }, 2000); //will call the function after 2 secs.
    </script>


firstly look time=0 seconds,so, it may/may not cause an execute , probably 0th chance (No chance) the browser should reload the current page in 0 seconds
 

and some Drawbacks to Using Meta Refresh Tags
 

Meta refresh tags have some drawbacks:
 


Meta refresh redirects have been used by spammers to fool search engines. So search engines remove those sites from their database. If you use a lot of meta refresh tags to redirect pages, the search engines may decide your site is spam and delete it from their index. It’s better to use a 301 Server Redirect instead.
 
If the redirect happens quickly (less than 2-3 seconds), readers with older browsers can’t hit the “Back” button. This is a usability problem. 
If the redirect happens quickly and goes to a non-existant page, your readers may get stuck in a loop without seeing any content other than a 404 page. When this happens, most people simply give up and leave rather than trying to figure out where you were trying to take them. 
Refreshing the current page can confuse people. If they didn’t request the reload, some people can get concerned about security.
 

why wint you use javascript with a time out?
 

    <script language=”javascript” type=”text/javascript”>
   setTimeout(function () {
       window.location.href = "tea.html"; //will redirect to your blog page (an ex:                  tea.html)
    }, 2000); //will call the function after 2 secs.
    </script>

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