libssh2_session_free (3) - Linux Man Pages
libssh2_session_free: frees resources associated with a session instance
libssh2_session_free - frees resources associated with a session instance
Frees all resources associated with a session instance. Typically called after
Return 0 on success or negative on failure. It returns
LIBSSH2_ERROR_EAGAIN when it would otherwise block. While
LIBSSH2_ERROR_EAGAIN is a negative number, it isn't really a failure per se.