NGINX send metrics for each location to statsd using Lua and UDP

nginx_lua_statsd.conf

location /test {

  set $service_name test;
  content_by_lua_block {
    --ngx.say("Let's send some stuff to statsd")
    local sock = ngx.socket.udp()
    local ok, err = sock:setpeername("127.0.0.1", 8125)
    if not ok then
      --ngx.say("failed to connect to udpserv: ", err)
      return
    end
    --ngx.say("successfully connected to udpserv!")

    local sendok, senderr = sock:send("test.nginx.requests:1|c")
    if not sendok then
      --ngx.say("Well.. This is embarrasing. Send failed.")
      return
    end
    --ngx.say("Send successful")
    sock:close()
  }
}