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WSASend.md

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Function name : WSASend

Group: Windows Sockets 2 (Winsock) - Library: ws2_32

Sends data on a connected socket.

Code examples:

Winsock: connecting to a news server (NNTP, port 119)

Declaration:

int WSASend(
  SOCKET s,
  LPWSABUF lpBuffers,
  DWORD dwBufferCount,
  LPDWORD lpNumberOfBytesSent,
  DWORD dwFlags,
  LPWSAOVERLAPPED lpOverlapped,
  LPWSAOVERLAPPED_COMPLETION_ROUTINE lpCompletionRoutine
);

FoxPro declaration:

DECLARE INTEGER WSASend IN ws2_32;
	INTEGER s,;
	STRING @lpBuffers,;
	LONG dwBufferCount,;
	LONG @lpNumberOfBytesSent,;
	LONG dwFlags,;
	INTEGER lpOverlapped,;
	INTEGER lpCompletionRoutine

Parameters:

s [in] A descriptor that identifies a connected socket.

lpBuffers [in] A pointer to an array of WSABUF structures. Each WSABUF structure contains a pointer to a buffer and the length, in bytes, of the buffer.

dwBufferCount [in] Number of WSABUF structures in the lpBuffers array.

lpNumberOfBytesSent [out] A pointer to the number, in bytes, sent by this call if the I/O operation completes immediately.

dwFlags [in] Flags used to modify the behavior of the WSASend function call. For more information, see Using dwFlags in the Remarks section.

lpOverlapped [in] A pointer to a WSAOVERLAPPED structure. This parameter is ignored for nonoverlapped sockets.

lpCompletionRoutine [in] A pointer to the completion routine called when the send operation has been completed.

Return value:

If no error occurs and the send operation has completed immediately, WSASend returns zero.