Wait for a Socket to Become Readable

See more Socket/SSL/TLS Examples

Demonstrates Socket.SelectForReading, which waits for read-ready activity on the socket, or on any contained socket when the object is a socket set. It returns 1 if ready, 0 on timeout, or -1 on error.

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

'  Wait up to 5 seconds for read-ready activity on the socket (or, for a socket set, on any contained
'  socket).  Returns 1 if ready, 0 on timeout, or -1 on error.
Dim ready As Long
ready = socket.SelectForReading(5000)
If (ready < 0) Then
    Debug.Print socket.LastErrorText
    Exit Sub
End If

If (ready <> 1) Then
    Debug.Print "No data became available before the timeout."
    Exit Sub
End If

Debug.Print "The socket has data ready to read."