Poll a Socket for Available Data

See more Socket/SSL/TLS Examples

Demonstrates Socket.PollDataAvailable, which performs a nonblocking check for readable activity and returns whether data or another read-ready condition is present.

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

    ;  Perform a nonblocking check for readable data.  Returns 1 when data or another read-ready
    ;  condition is present, and 0 when nothing is immediately available.
    bAvailable.i = CkSocket::ckPollDataAvailable(socket)
    If bAvailable <> 1
        Debug "No data is immediately available."
    Else
        Debug "Data is available to read."
    EndIf



    CkSocket::ckDispose(socket)


    ProcedureReturn
EndProcedure