[websockets] ce/dispatcher bind/connect constants

This makes it easier to change protocols, ports etc.
Status Job ID Name Coverage
  Cabal
failed #13416
cabal

 
  Stack
skipped #13417
stack
 
  Bench
skipped #13418
allowed to fail manual
bench
 
  Test
skipped #13419
test
 
Name Stage Failure
failed
cabal Cabal There has been a timeout failure or the job got stuck. Check your timeout limits or try again
No job trace