Run gtest (found in "demo/gtest/normal"), with the following
command line options, to connect to a game server:
gtest -p:IPADR -t:SPECIES -n:DLL
where IPADR is the IP address of the machine running the game server,
SPECIES is the id of the game lobby (if you don't care, just use 1000),
and DLL is the network transport DLL (under Linux, this is ignored unless
you have Loki's transport patch).
(Note: "localhost" will not work for the IP address -- you must use
the public IP address as seen by clients! See
server/README2.txt for more details).