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Low Level Routines, Overview
TCP_Receive
| TCP_Receive ( tcp_ID ; Text ) -> Funktionsergebnis | ||||||||
| Parameter | Typ | Beschreibung | ||||||
| tcp_ID | Lange Ganzzahl |
|
Reference to an open TCP session | |||||
| Text | Text |
|
Received Text | |||||
| Funktionsergebnis | Ganzzahl |
|
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
Produkt: 4D
Thema: IC TCP/IP
Nummer:
88930
Erstellt: 4D Internet Commands 6.5
4D Internet Commands ( 4D v20 R7)
