4D Internet Commands v16
TCP_Receive
TCP_Receive
| TCP_Receive ( tcp_ID ; text ) -> Function result | ||||||||
| Parameter | Type | Description | ||||||
| tcp_ID | Longint |
|
Reference to an open TCP session | |||||
| text | Text |
|
Received Text | |||||
| Function result | Integer |
|
Error Code | |||||
Given a long integer reference to an established TCP Session, the TCP_Receive command receives packets of data into text.
tcp_ID is a long integer reference to an open TCP session as established with either the TCP_Open or TCP_Listen command.
text is the text received. When receiving data via TCP packets, you cannot count on all of your data being received by a single TCP_Receive call. The TCP_Receive command is usually called within a Repeat loop which continually checks on the status of the connection or is scanning for a known value.
C_LONGINT($tcp_id)
C_TEXT($webpage;$buffer)
C_LONGINT(vState;$error)
$webpage:=""
vState:=0
Repeat
$error:=TCP_Receive($tcp_id;$buffer)
$error:=TCP_State($tcp_id;vState)
$webpage:=$webpage+$buffer
Until((vState=0)|($error#0)) //until host closes connection or an error
Product: 4D Internet Commands
Theme: IC TCP/IP
Number:
88930
Created: 4D Internet Commands 6.5
4D Internet Commands ( 4D Internet Commands v16)
