It appears from reading https://api.libssh.org/stable/libssh_tutor_forwarding.html that in order to implement reverse port forwarding one must continually call ssh_channel_accept_forward() in order to accept any possible connections from the remote side. Is this correct?
It presents a couple challenges: * It's a very inefficient method - polling vs. event driven * It can generate a huge amount of log messages as ssh_channel_accept() logs an error every time it is called and there is nothing to accept: [2023/04/10 12:17:34.044502, 1] ssh_channel_accept: No channel request of this type from server See also https://bugs.x2go.org/cgi-bin/bugreport.cgi?bug=1421 So: * If polling is indeed the only mechanism available here, libssh should not be emitting an error in this case. Possibly a DEBUG or TRACE level message instead, but honestly enabling it for anything like x2goclient that does continual polling will just swamp the logs. * Is there a possibility of implementing a callback method to accept remote connections? Thanks, Orion -- Orion Poplawski IT Systems Manager 720-772-5637 NWRA, Boulder/CoRA Office FAX: 303-415-9702 3380 Mitchell Lane or...@nwra.com Boulder, CO 80301 https://www.nwra.com/
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