port-utils alternatives and similar packages
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Popular Comparisons
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postgresql-simple-sopvsargon2
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ansi-escape-codesvsbase-unicode-symbols
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README
port-utils
openFreePort
This is another version of warp's openFreePort function. This function has fewer dependencies than the warp version.
openFreePort returns a socket on a random port and the port it has been bound to.
openFreePort :: IO (Int, Socket)
wait
wait will attempt to connect to a host and port until it is successful. Between each unsuccessful attempt, it sleeps for 10 ms.
Here is an example of the primary function:
import Network.Socket.Wait (wait)
void $ forkIO $ Warp.run 7000 app
-- Wait for the server to start listening on the socket
wait "127.0.0.1" 7000
-- Communicate with the server
...
In bash one could write:
while ! nc -z localhost 7000 ; do sleep 0.01 ; done
The bash script above was copied from this stackoverflow answer https://stackoverflow.com/a/50008755