LInet::SendData

#include "ltwrappr.h"

L_INT LInet::SendData(plRemoteComp, pBuffer, pulBufferLength, uDataType)

LInet plRemoteComp;	/* instance of a remote computer */
L_CHAR L_FAR * pBuffer;	/* pointer to the data buffer to send */
L_UINT32 L_FAR * pulBufferLength;	/* address of a variable to be updated with the length of the buffer */
L_UINT uDataType;	/* data type */

Sends data to a remote computer.

Parameter	Description
plRemoteComp	Instance of remote computer to which data will be sent
pBuffer	Pointer to the buffer that contains the data to send
pulBufferLength	Address of a variable that contains the length of buffer, and which will be updated with the amount of data actually sent.
uDataType	Value indicating the type of data being sent. This value determines the type of headers added to the data. Possible values are:
	Value	Meaning
	IDATA_IMAGE	[0x0000] image data
	IDATA_MMEDIA	[0x0001] multimedia object
	IDATA_USER1	[0x0002] user data
	IDATA_USER2	[0x0003] user data
	IDATA_USER3	[0x0004] user data
	IDATA_USER4	[0x0005] user data
	The receiving computer will receive the appropriate Callback functions as follows:
	On Send:	On Receive:
	IDATA_IMAGE	LInet::OnImageReceived
	IDATA_MMEDIA	LInet::OnMMediaReceived
	IDATA_USER1	LInet::OnUser1Received
	IDATA_USER2	LInet::OnUser2Received
	IDATA_USER3	LInet::OnUser3Received
	IDATA_USER4	LInet::OnUser4Received
	Note: If an error occurs during sending or receiving and the headers become corrupted, then LInet::OnUser1Received will be called on the receiving computer. This means that to differentiate your own user-defined data from bad frames, you can use IDATA_USER2, IDATA_USER3 or IDATA_USER4.

Returns

SUCCESS	The function was successful.
< 1	An error occurred. Refer to Return Codes.

Comments

After this function returns, pulBufferLength will be updated with the amount of data that was actually sent. If pulBufferLength is less than the original value, then the rest of the data is queued, and will be sent at a later time. You do not need to re-send the data.

Note: With this function, LEADTOOLS adds its own headers to the data being sent. These headers need to be stripped by the remote computer, in order for the actual data to be processed. The remote computer can set auto process by calling LInet::EnableAutoProcess in order for the headers to be stripped.

You must initialize the LEADTOOLS Internet DLL using LInet::StartUp before calling this function.

Required DLLs and Libraries

LTNET

For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.

Functions:	LInet::SendRawData, LInet::Connect, LInet::Close, LInet::ReadData, LInet::SendBitmap, LInet::SendSound, LInet::EnableAutoProcess, LInet::ServerInit, LInet::ClearQueue, LInet::GetQueueSize, LInet::StartUp, LInet::ShutDown, Class Members
Topics:	Sending and Receiving Data