(PureBasic) TCP Socket Connect through HTTP Proxy

Demonstrates how to connect through an HTTP proxy server.

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.

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

    ; To connect through an HTTP proxy, set the HttpProxyHostname
    ; and HttpProxyPort properties to the hostname (or IP address)
    ; and port of the HTTP proxy.  Typical port numbers used by
    ; HTTP proxy servers are 3128 and 8080.
    CkSocket::setCkHttpProxyHostname(socket, "www.my-http-proxy.com")
    CkSocket::setCkHttpProxyPort(socket, 3128)

    ; Important:  Your HTTP proxy server must allow non-HTTP
    ; traffic to pass.  Otherwise this does not work.

    ; Connect (via the HTTP proxy) to port 5555 of 192.168.1.108.
    ; hostname may be a domain name or IP address.
    hostname.s = "192.168.1.108"
    ssl.i = 0
    maxWaitMillisec.i = 20000
    success.i = CkSocket::ckConnect(socket,hostname,5555,ssl,maxWaitMillisec)
    If success <> 1
        Debug CkSocket::ckLastErrorText(socket)
        CkSocket::ckDispose(socket)
        ProcedureReturn
    EndIf

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

    ; The ficticious server (in this example) is going to send a "Hello World!" 
    ; message.  Read it:
    receivedMsg.s = CkSocket::ckReceiveString(socket)
    If CkSocket::ckLastMethodSuccess(socket) <> 1
        Debug CkSocket::ckLastErrorText(socket)
        CkSocket::ckDispose(socket)
        ProcedureReturn
    EndIf

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

    Debug receivedMsg


    CkSocket::ckDispose(socket)


    ProcedureReturn
EndProcedure