(Visual FoxPro) TCP Socket Connect through HTTP Proxy

Demonstrates how to connect through an HTTP proxy server.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

LOCAL loSocket
LOCAL lcHostname
LOCAL lnSsl
LOCAL lnMaxWaitMillisec
LOCAL lnSuccess
LOCAL lcReceivedMsg

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

* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.Socket')
loSocket = CreateObject('Chilkat.Socket')

* 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.
loSocket.HttpProxyHostname = "www.my-http-proxy.com"
loSocket.HttpProxyPort = 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.
lcHostname = "192.168.1.108"
lnSsl = 0
lnMaxWaitMillisec = 20000
lnSuccess = loSocket.Connect(lcHostname,5555,lnSsl,lnMaxWaitMillisec)
IF (lnSuccess <> 1) THEN
    ? loSocket.LastErrorText
    RELEASE loSocket
    CANCEL
ENDIF

* Set maximum timeouts for reading an writing (in millisec)
loSocket.MaxReadIdleMs = 10000
loSocket.MaxSendIdleMs = 10000

* The ficticious server (in this example) is going to send a "Hello World!" 
* message.  Read it:
lcReceivedMsg = loSocket.ReceiveString()
IF (loSocket.LastMethodSuccess <> 1) THEN
    ? loSocket.LastErrorText
    RELEASE loSocket
    CANCEL
ENDIF

* Close the connection with the server
* Wait a max of 20 seconds (20000 millsec)
lnSuccess = loSocket.Close(20000)

? lcReceivedMsg

RELEASE loSocket