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GHC 9.10.3 · lts/ghc-9.10.x · c74966e · 2026-09-27

Moduleport-utils-0.2.1.0Haskell2010

Network.Socket.Free

  • 2 values
valueopenFreePort :: IO (Int, Socket)
#

Open a TCP socket on a random free port. This is like warp's openFreePort.

Since 0.0.0.1

valuegetFreePort :: IO Int
#

Open a TCP socket, get its port and close the socket. Useful when you have an external service that needs a fresh port.

There is a small race condition present: It's possible to get a free port only for it to be bound by some other process or thread before used

Since 0.2.1