NAME
send_datagram - send a message on the datagram channel
SYNOPSIS
int send_datagram(string message)
DESCRIPTION
Send a message on the datagram channel of a binary user object. At
least one message must have been received on the same channel before
this function can be used. The return value is the length of the
message if it could be sent, or 0 otherwise.
No more than one datagram can be sent per user object during each task.
ERRORS
An error will result if the current object has no datagram channel.
SEE ALSO