Denso BHT-200QW Dokumentacja Pobierz pdf (Strona 404)

100

101

396

Function #14 .fcRecv

Receive data sent to the specified TCP socket

Syntax: CALL "SOCKET.FN3" .fcRecv SOCKFD%, RECVBUFF$[()],

RECVLEN%, RECVMODE%, RECVSIZE% [,RECVFLAG%]

Description:

This function receives data from the IP address and port number

connected to the specified socket identifier into the specified buffer.

BSD4.4 socket API equivalent: This function is equivalent to the BSD4.4

socket API recv() function.

Parameters: SOCKFD% Socket identifier

RECVBUFF$[()] Receive buffer

RECVLEN% Maximum number of bytes to receive

RECVMODE% Receive mode

RECVFLAG% Storage method (optional)

The receive buffer (

RECVBUFF$) can be either a string non-array or

string array variable. The maximum size for a string is 255 bytes; for a

string array, 4096.

The receive mode (

RECVMODE%) must be one of the following values:

.soRvNrm

Normal

.soRvOOB

Out of band data

.soRvPeek

Peek at next message

The storage method (RECVFLAG%) is required for a string array buffer. It

is ignored for a string variable and new data will be written.

The storage method (

RECVFLAG%) must be one of the following values:

.soRvApend

Append data to buffer (default if omitted)

.soRvWrite

Overwrite buffer with data

Note: If RECVFLAG% is 0 or omitted, the user application program must

initialize the receive buffer string array variable before receiving any data.

Return value: RECVSIZE% Number of bytes received

1 2 ... 399 400 401 402 403 404 405 406 407 408 409 ... 586 587

Komentarze do niniejszej Instrukcji

Brak uwag

Denso BHT-200QW Dokumentacja Strona 404

Komentarze do niniejszej Instrukcji

Powiązane produkty i podręczniki dla Czytniki kodów kreskowych Denso BHT-200QW