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.

IncludeFile "CkSocket.pb"

Procedure ChilkatExample()

    success.i = 0

    socket.i = CkSocket::ckCreate()
    If socket.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    ;  Connect to the server using TLS.
    bTls.i = 1
    maxWaitMs.i = 5000
    success = CkSocket::ckConnect(socket,"example.com",5000,bTls,maxWaitMs)
    If success = 0
        Debug CkSocket::ckLastErrorText(socket)
        CkSocket::ckDispose(socket)
        ProcedureReturn
    EndIf

    ;  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.
    ready.i = CkSocket::ckSelectForReading(socket,5000)
    If ready < 0
        Debug CkSocket::ckLastErrorText(socket)
        CkSocket::ckDispose(socket)
        ProcedureReturn
    EndIf

    If ready <> 1
        Debug "No data became available before the timeout."
        CkSocket::ckDispose(socket)
        ProcedureReturn
    EndIf

    Debug "The socket has data ready to read."


    CkSocket::ckDispose(socket)


    ProcedureReturn
EndProcedure