title: Haproxy cant bind [0.0.0.0:80] - CentOS 6.5
body: <p>im running on CentOS 6.5 and actually trying to follow this tutorial (<a href="http://socketo.me/docs/deploy" rel="noreferrer">http://socketo.me/docs/deploy</a>) on Websocket which says that I need to install Haproxy and run the following linux command : </p>
  
  <pre><code>sudo haproxy -f /etc/haproxy.cfg -p /var/run/haproxy.pid -D
  </code></pre>
  
  <p>The problem is that I get this message : </p>
  
  <pre><code>[ALERT] 015/013939 (22640) : Starting frontend public: cannot bind socket [0.0.0.0:80]
  </code></pre>
  
  <p>My "netstat -nat | grep 80 | grep LISTEN" returns : </p>
  
  <pre><code>tcp        0      0 212.227.96.81:80            0.0.0.0:*                   LISTEN
  tcp        0      0 0.0.0.0:8880                0.0.0.0:*                   LISTEN
  tcp        0      0 2001:8d8:86c:6e00::14:3b:80 :::*                        LISTEN
  tcp        0      0 :::8880                     :::*                        LISTEN
  tcp        0      0 :::7080                     :::*                        LISTEN
  </code></pre>
  
  <p>PS : 212.227.96.81 is the IP adress that pings on my domain name.
  What should I do exactly to resolve this ? Is it apache ? Because I restarted it and nothing.
  Thank you.</p>