@brief SSH channel signal callback. Called when a channel has received a signal
@param session Current session handler
@param channel the actual channel
@param signal the signal name (without the SIG prefix)
@param userdata Userdata to be passed to the callback function.
@brief SSH channel signal callback. Called when a channel has received a signal @param session Current session handler @param channel the actual channel @param signal the signal name (without the SIG prefix) @param userdata Userdata to be passed to the callback function.