B4X

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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Dim success As Boolean = False

Dim socket As ChilkatSocket
socket.Initialize("socket")

'  Connect to the server using TLS.
Dim bTls As Boolean = True
Dim maxWaitMs As Int = 5000
success = socket.Connect("example.com", 5000, bTls, maxWaitMs)
If success = False Then
    Log(socket.LastErrorText)
    Return
End If


'  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.
Dim bd As ChilkatBinData
bd.Initialize
success = socket.ReceiveBd(bd)
If success = False Then
    Log(socket.LastErrorText)
    Return
End If

Log("Received " & bd.NumBytes & " bytes.")