(PureBasic) Accept Connection on Socket

Demonstrates how to create a TCP/IP socket, listen on a port, accept an incoming connection, and send a "Hello World" message to the client.

Chilkat PureBasic Module Download Chilkat PureBasic Module

IncludeFile "CkSocket.pb"

Procedure ChilkatExample()

    ; This example requires the Chilkat API to have been previously unlocked.
    ; See Global Unlock Sample for sample code.

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

    ; Bind to a port and listen for incoming connections:
    ; This example will listen at port 5555 and allows for a backlog
    ; of 25 pending connection requests.
    success.i = CkSocket::ckBindAndListen(listenSocket,5555,25)
    If success <> 1
        Debug CkSocket::ckLastErrorText(listenSocket)
        CkSocket::ckDispose(listenSocket)
        ProcedureReturn
    EndIf

    ; Get the next incoming connection
    ; Wait a maximum of 20 seconds (20000 millisec)
    connectedSocket.i
    connectedSocket = CkSocket::ckAcceptNextConnection(listenSocket,20000)
    If CkSocket::ckLastMethodSuccess(listenSocket) = 0
        Debug CkSocket::ckLastErrorText(listenSocket)
        CkSocket::ckDispose(listenSocket)
        ProcedureReturn
    EndIf

    ; Set maximum timeouts for reading an writing (in millisec)
    CkSocket::setCkMaxReadIdleMs(connectedSocket, 10000)
    CkSocket::setCkMaxSendIdleMs(connectedSocket, 10000)

    ; Send a "Hello World!" message to the client:
    success = CkSocket::ckSendString(connectedSocket,"Hello World!")
    If success <> 1
        Debug CkSocket::ckLastErrorText(connectedSocket)
        CkSocket::ckDispose(connectedSocket)

        CkSocket::ckDispose(listenSocket)
        ProcedureReturn
    EndIf

    ; Close the connection with the client.
    ; Wait a max of 20 seconds (20000 millsec)
    success = CkSocket::ckClose(connectedSocket,20000)

    Debug "success!"


    CkSocket::ckDispose(listenSocket)


    ProcedureReturn
EndProcedure