Cannot connect after compile

[olleharstedt]

I successfully compile the chat example, but when trying to connect, I get a console error:

Firefox can’t establish a connection to the server at ws://localhost:3000/.

Using sockstat, the port looks like it's actually 2816:

rock64   a.out                8763     tcp4   127.0.0.1:2816            *:*                       LISTEN

But connecting to this port does not work either. Any tips?