PureBasic

Send a 16-bit Integer over a Socket

Demonstrates Socket.SendInt16, which sends the low 16 bits of a value as a two-byte integer in the selected byte order.

Background. Fixed-size integers and length prefixes are common building blocks for application-defined binary protocols. Byte order is selectable, with big-endian being network byte order.

Chilkat PureBasic Downloads

Download Chilkat for PureBasic

PureBasic

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

    ;  Send the low 16 bits of the value as a two-byte integer.  Use 1 for network byte order
    ;  (big-endian) or 0 for little-endian.
    bBigEndian.i = 1
    success = CkSocket::ckSendInt16(socket,1024,bBigEndian)
    If success = 0
        Debug CkSocket::ckLastErrorText(socket)
        CkSocket::ckDispose(socket)
        ProcedureReturn
    EndIf

    Debug "16-bit integer sent."


    CkSocket::ckDispose(socket)


    ProcedureReturn
EndProcedure