WSASetUdpSendMessageSize function (ws2tcpip.h)

Sets the segmentation message size on a UDP socket.

Syntax

INT WSASetUdpSendMessageSize(
  [in] SOCKET Socket,
  [in] DWORD  MsgSize
);

Parameters

[in] Socket

A descriptor that identifies a UDP socket.

[in] MsgSize

Type: DWORD

The message size to be set on the socket for UDP segmentation.

Return value

On success, the function returns 0. Otherwise, a value of SOCKET_ERROR is returned, and you can retrieve a specific error code by calling WSAGetLastError.

Remarks

UDP send segmentation is supported through the UDP_SEND_MSG_SIZE socket option. WSASetUdpSendMessageSize is a type-safe wrapper for setting this socket option, and we recommend it over setsockopt.

Requirements