* I'm doing a nonblocking connect and for this I need to select
on writable and the first thing I need to do is to check the
SOL_SOCKET SO_ERROR state. I realize this by setting a different
cb on the embedded bfd during setup and then go back to the real
implementation.
The write queue can be a dropin replacement for the bsc_fd. It
is featuring two callbacks. One for ready read and one for ready
write. Whenever there is a message in the queue the write_queue
will set the BSC_FD_WRITE flag and then call the write callback.
It will make sure to delete the msgb after the write function
has been called. This class is intended to be be used in the
osmocom, layer2, bsc_msc_ip, bsc_hack and other applications.
Holger Hans Peter Freyther