93deb52cd6
This complements the "server already started" error introduced in
r35046. It's now easy for the client to detect whether a connection
to the server was successful--it simply connects and waits for the
initial message from the server. The message returned on a successful
connection is:
{"event":"server.connected"}
R=brianwilkerson@google.com
Review URL: https://codereview.chromium.org//239213004
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@35108 260f80e4-7a28-3924-810f-c04153c831b5