[jetty-dev] Setting TOS/DS for WebSocket traffic

[xavier.bruggheman@xxxxxxxxxxxx]

Hi,

I'm using Jetty 9.1.1 as websocket client & server over SSL, and need to 
set the TOS / DF fields (RFC 1349 / RFC 2474) on the generated TCP 
traffic in order for it to be routed with the same level of priority as 
the associated non-websocket traffic it controls (currently Express 
Forwarding, but others might be used depending on the environment).

I've had a look around, but couldn't find an easy way to configure it 
for the socket/channels created by either the Server or the 
WebSocketClient. The nearest thing I've found is the configuration of 
another socket options (lingerTime) for server sockets, but not much of 
the WebSocketPolicy applies to the creation of client sockets.

The only way I currently managed to do that is through rather ugly 
hacks:
- On the server side, subclass oejs.ServerConnector and override 
protected void configure(Socket) in order to call 
socket.setTrafficClass(tos). I could live with that.
- On the client side, subclass oejwci.ConnectionManager, override public 
ConnectPromise connect(WebSocketClient, EventDriver, 
ClientUpgradeRequest), and return a class similar to PhysicalConnect 
which would either call channel.socket().setTrafficClass(tos) or 
channel.setOption(StandardSocketOptions.IP_TOS, tos) before connecting. 
This is much uglier due to the private PhysicalConnect inner class and 
its lack of socket configuration hooks.

Did I miss something ? Is there an easier way to configure that option ?

If not, would you consider making this configurable in a later version ?

Regards,

Xavier BRUGGHEMAN