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Visual Basic 6.0

Receive an Exact Number of Bytes into a BinData

See more Socket/SSL/TLS Examples

Demonstrates Socket.ReceiveBdN, which receives exactly the requested number of bytes and appends them to a BinData, continuing until the full count is satisfied.

Background. Inactivity is controlled by MaxReadIdleMs: the call fails if incoming bytes halt for longer than MaxReadIdleMs milliseconds before the full amount is received. A single receive returns only what is currently available, whereas this counted receive waits for an exact number of bytes.

Chilkat Visual Basic 6.0 Downloads

Visual Basic 6.0
Dim success As Long
success = 0

Dim socket As New ChilkatSocket

'  Connect to the server using TLS.
Dim bTls As Long
bTls = 1
Dim maxWaitMs As Long
maxWaitMs = 5000
success = socket.Connect("example.com",5000,bTls,maxWaitMs)
If (success = 0) Then
    Debug.Print socket.LastErrorText
    Exit Sub
End If

'  MaxReadIdleMs controls the inactivity limit for receiving.  The ReceiveBdN call will fail if
'  incoming bytes halt for longer than this many milliseconds before the full amount is received.
socket.MaxReadIdleMs = 15000

'  Receive exactly the requested number of bytes, appending them to a BinData.  The method continues
'  receiving until the full count is satisfied or a failure occurs.
Dim bd As New ChilkatBinData
success = socket.ReceiveBdN(256,bd)
If (success = 0) Then
    Debug.Print socket.LastErrorText
    Exit Sub
End If

Debug.Print "Received " & bd.NumBytes & " bytes."