B4X

Receive a Block of Bytes to a File

Demonstrates Socket.ReceiveBytesToFile, which receives one available block of bytes and appends it to a file.

The file path is relative to the application's current working directory. An absolute path may also be used. Supply the path appropriate to your own environment.

Background. Any buffered data is written first; otherwise a single receive operation is performed. The method appends, so repeated calls accumulate received blocks in the file.

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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


'  The file path is relative to the application's current working directory.  An absolute path
'  may also be used.  Supply the path appropriate to your own environment.

'  Receive one available block of bytes and append it to a file.  If bytes are already buffered,
'  they are used first; otherwise a single receive operation is performed.
success = socket.ReceiveBytesToFile("qa_output/received.dat")
If success = False Then
    Log(socket.LastErrorText)
    Return
End If

Log("Received block appended to the file.")