non-blocking code and EAGAIN

[Matthew Avery <matthewaveryusa@xxxxxxxxx>]

Hi,
How is libssh able to handle non-blocking sockets if errno==EAGAIN isn't
handled specially? Upon lightly examining socket.c it seems like if errno
is < 0 on read or write then the connection goes into an error mode
(data_except is set which subsequently sets the status to SSH_CLOSED_ERROR)

Thanks,
-Matt