This function writes a block of data to a connected stream.
It exists to have a portable way to send the data to the sound server
that does not depend on the underlying operating system.
PARAMETERS
fh
The stream file handle connected to the server.
This must be opend using muroar_stream(3).
buf
A pointer to the block of data that should be written.
len
The total length in byte of the data that should be written.
RETURN VALUE
On success this call return the number of successful written bytes.
On error, -1 is returned.
NOTES
This function calls the underlying write function in a loop.
If this returns less than the given length you should not re-try
directly but wait at least some milisecunds.
HISTORY
This function first appeared in muRoar version 0.1beta0.