Session not found after server restart in GHCi

[banacorn]

How to reproduce

1. Fire up a socketio server in ghci
2. Press ctrl-c to interrupt
3. Fire up the server again
4. Connect the server with a client

Then check the log, there should be a warning
... Warn [Connect] Session not found

Cause

Threads not terminated when process got interrupted by a SIGINT.

[banacorn]

#2301 Proper handling of SIGINT/SIGQUIT

Let's see if this issue will be addressed in GHC 7.8.1.