Add optional access logging for the stream server

nginx.conf

@@ -21,6 +21,15 @@ events {
 # We use the 'stream' service, which is essentially just a TCP proxy with
 # some bells and whistles.
 stream {
+    # You may want to enable the next few lines in order to get access logs.
+    # I've disabled them by default; if you enable logging make sure you
+    # point the log file to a directory that 1) exists and 2) is writable
+    # by the nginx worker processes.
+    #log_format basic '$remote_addr [$time_local] '
+    #                 '$protocol $status $bytes_sent $bytes_received '
+    #                 '$session_time';
+    #access_log /var/log/nginx/stream.log basic;
+
     # Make sure TCP_NODELAY is set; this prevents unnecessary waits in order
     # to fill data segments prior to sending. This is an interactive service
     # so any delay would make it seem like a slower BBS/phone line than it