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ssh-tunnel

Small library that allows to create SSH tunnel (SOCKS proxy) from Haskell and proxy http-client.

Tunnel is created with:

ssh -f -N -M -S <master-socket> -i <pemfile> -L <localport>:127.0.0.1:<remoteport> <user>@<host>

Note: that the tunnel is created in background (-f) without a shell on remote host (-N) and (-M -S ) defines special socket that is used to terminate the tunnel.

How to use in your code:

import Control.Monad.Managed
import Control.SSH.Tunnel
import Network.HTTP.Client
import Network.HTTP.Client.TLS

with (openSshTunnel config tlsManagerSettings) $ \settings -> do
 manager <- newManager settings
 -- do things with manager
 -- as soon you live the scope, tunnel will be down

Also, you can find addFingerprints function useful for adding fingerprints to known hosts on first connect.