netwrite - send a message on a socket
int netwrite (int s, char *buf, int nbytes);
ssize_t netwrite_timeout (int s, void *buf, size_t nbytes, int
netwrite sends a message on a socket.
This routine returns the number of bytes if the operation was
successful, 0 if the connection was closed by the remote end or -1 if
the operation failed. In the latter case, serrno is set appropriately.
EINTR The function was interrupted by a signal.
EBADF s is not a valid descriptor.
EAGAIN The socket is non-blocking and there is no space available
in the system buffers for the message.
EFAULT buf is not a valid pointer.
EINVAL nbytes is negative or zero.
ENOTSOCK s is not a socket.
SECONNDROP Connection closed by remote end.
SETIMEDOUT Timed out.
LCG Grid Deployment Team