MSEND(3) libdill Library Functions MSEND(3) NAME msend - sends a message SYNOPSIS #include <libdill.h> int msend( int s, const void* buf, size_t len, int64_t deadline); DESCRIPTION This function sends a message to a socket. It is a blocking operation that unblocks only after entire message is sent. There is no such thing as par- tial send. If a problem, including timeout, occurs while sending the mes- sage error is returned to the user and the socket cannot be used for send- ing from that point on. s: The socket to send the message to. buf: Message to send. len: Size of the message, in bytes. deadline: A point in time when the operation should time out, in millisec- onds. Use the now function to get your current point in time. 0 means im- mediate timeout, i.e., perform the operation if possible or return without blocking if not. -1 means no deadline, i.e., the call will block forever if the operation cannot be performed. RETURN VALUE In case of success the function returns 0. In case of error it returns -1 and sets errno to one of the values below. ERRORS * EBADF: Invalid handle. * EBUSY: The handle is currently being used by a different coroutine. * ECANCELED: Current coroutine was canceled. * ECONNRESET: Broken connection. * EINVAL: Invalid argument. * EMSGSIZE: The message is too long. * ENOTSUP: The handle does not support this operation. * EPIPE: Closed connection. * ETIMEDOUT: Deadline was reached. EXAMPLE int rc = msend(s, "ABC", 3, -1); SEE ALSO mrecv(3) mrecvl(3) msendl(3) now(3) libdill MSEND(3)
NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | EXAMPLE | SEE ALSO
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