Visual FoxPro

Receive Bytes into a BinData

Demonstrates Socket.ReceiveBd, which receives one delivery of binary data and appends it to a BinData. It returns whatever is immediately available.

Background. The BinData receive methods accumulate raw bytes in a BinData object. A single receive returns only what is currently available, whereas the counted receive waits for an exact number of bytes.

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Visual FoxPro

LOCAL lnSuccess
LOCAL loSocket
LOCAL lnBTls
LOCAL lnMaxWaitMs
LOCAL loBd

lnSuccess = 0

loSocket = CreateObject('Chilkat.Socket')

*  Connect to the server using TLS.
lnBTls = 1
lnMaxWaitMs = 5000
lnSuccess = loSocket.Connect("example.com",5000,lnBTls,lnMaxWaitMs)
IF (lnSuccess = 0) THEN
    ? loSocket.LastErrorText
    RELEASE loSocket
    CANCEL
ENDIF

*  Receive one delivery of binary data and append it to a BinData.  ReceiveBd returns whatever is
*  immediately available; it does not loop to drain everything that may follow.
loBd = CreateObject('Chilkat.BinData')
lnSuccess = loSocket.ReceiveBd(loBd)
IF (lnSuccess = 0) THEN
    ? loSocket.LastErrorText
    RELEASE loSocket
    RELEASE loBd
    CANCEL
ENDIF

? "Received " + STR(loBd.NumBytes) + " bytes."

RELEASE loSocket
RELEASE loBd