title: Possible reason for NGINX 499 error codes
body: <p>I'm getting a lot of 499 NGINX error codes.  I see that this is a client side issue.  It is not a problem with NGINX or my uWSGI stack.  I note the correlation in uWSGI logs  when a get a 499.</p>
  
  <pre><code>address space usage: 383692800 bytes/365MB} {rss usage: 167038976
  bytes/159MB} [pid: 16614|app: 0|req: 74184/222373] 74.125.191.16 ()
  {36 vars in 481 bytes} [Fri Oct 19 10:07:07 2012] POST /bidder/ =&gt;
  generated 0 bytes in 8 msecs (HTTP/1.1 200) 1 headers in 59 bytes (1
  switches on core 1760)
  SIGPIPE: writing to a closed pipe/socket/fd (probably the client
  disconnected) on request /bidder/ (ip 74.125.xxx.xxx) !!!
  Fri Oct 19 10:07:07 2012 - write(): Broken pipe [proto/uwsgi.c line
  143] during POST /bidder/ (74.125.xxx.xxx)
  IOError: write error
  </code></pre>
  
  <p>I'm looking for a more in depth explanation and hoping it is nothing wrong with my NGINX config for uwsgi. I'm taking it on face value. It seems like a client issue.</p>