%SS_SENDTO

Send bytes through a datagram socket (IPv4)

WTSupported in traditional Synergy on Windows
WNSupported in Synergy .NET on Windows
USupported on UNIX
VSupported on OpenVMS
status = %SS_SENDTO(socket, buf, bytes_sent, in_port, in_addr)

Return value

status

Returns SS_SUCCESS (0) or one of the errors in Error codes returned by %SS_SENDTO below. (n)

Arguments

socket

A descriptor of an open socket created by %SS_SOCKET. (i4)

buf

Buffer containing the data to be sent. (a)

bytes_sent

Returned with the number of bytes sent from buf. (i4)

in_port

Specifies the Internet port of the target socket. (i4)

in_addr

Specifies the IPv4 address of the target socket. (i4)

Discussion

%SS_SENDTO writes outgoing data through a datagram socket to a specified peer address (in_port and in_addr) where there has not been a previous call to %SS_CONNECT. (%SS_CONNECT establishes a permanent peer address.)

Note

Successful completion of %SS_SENDTO does not indicate successful delivery of data.

If the packet data exceeds the maximum IP packet size of the underlying subnets, no data is transmitted and the error SS_EMSGSIZE is returned.

If no buffer space is available within the transport system to hold the data to be transmitted, %SS_SENDTO blocks.

If you call %SS_SENDTO on a stream socket, it functions identically to %SS_SEND.

Error codes returned by %SS_SENDTO

See the Socket Errors table for additional information about these errors.

SS_EACCES

SS_EADDRNOTAVAIL

SS_EBADF

SS_ECONNABORTED

SS_ECONNRESET

SS_EDESTADDRREQ

SS_EFAULT

SS_EINTR

SS_EISCONN

SS_EMSGSIZE

SS_ENETDOWN

SS_ENETRESET

SS_ENETUNREACH

SS_ENOBUFS

SS_ENOTCONN

SS_ENOTSOCK

SS_EUNKNOWN

SS_NOTINITIALISED