title: Set default_socket_timeout to infinity?
body: <p>I know that in <code>/etc/php5/fpm/php.ini</code> there is a setting called <code>default_socket_timeout</code> which in practice terminates connections that have not had a response pushed to them for a specific amount of time. 
  I'm running a RabbitMQ-based AJAX "listener", which opens a connection and waits until it receives a response, if at all, then restarts itself. </p>
  
  <p>The problem is that it may not receive a response for a long time - sometimes even up to 2 hours. When that happens the listener dies because it received <code>504 Gateway Timeout</code>. I know the average load - it's an in-house system, only accessible to a certain office - so too many sockets won't be a problem.
  Is there any way to set <code>default_socket_timeout</code> to "no limits"? I tried <code>default_socket_timeout=0</code>, but that just reverts it to the default of 60 seconds.</p>