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4D Internet Commands v14

TCP_SendBLOB


TCP_SendBLOB ( tcp_ID ; blobToSend ) -> Function result

Parameter	Type	Description
tcp_ID	Longint	Reference to an open TCP session
blobToSend	BLOB	Blob to send
Function result	Integer	Error Code

Description

The TCP_SendBLOB command sends data to the TCP session designated by tcp_ID. This command performs the same action as TCP_Send, except that it will send a BLOB instead of a text, which allows bypassing the 32K text limitation. Using this command, you can send binary objects.

tcp_ID is a long integer reference to an open TCP session as established with either the TCP_Open or TCP_Listen command.

blobToSend is the BLOB to be sent to the TCP session referenced by tcp_ID.

Note regarding Platform Independence: If you exchange BLOBs between Macintosh and PC platforms, it is up to you to manage byte swapping issues if necessary.

Example

This example will send a BLOB to the TCP session:

 C_BLOB($Blob_Send)

 C_TEXT(v_Txt_Send)

 TEXT TO BLOB(v_Txt_Send;$Blob_Send;Text without length;*)

 $err:=TCP_SendBLOB(v_tcp_ID;$Blob_Send)