HTTP through proxy connection

I am trying to download an image from a Web site through a proxy server.  All the posts seem to refer to this article: How can I open a TCP/IP connection through a Proxy Server?  The only link that works on this article is that of the internet Toolbox, and it offers no help on proxy servers.  I have the Internet Toolbox, but there seems to be no screws that can work through a proxy.  Anyone could do this?

Basic proxy support is not so difficult. You can change the screws to do that for you. All you need to do is to open the connection to the proxy server instead of on the destination server and change the URI in the HTTP Get request to contain the full URL at the time the name of the server and the path on this server.

Thus, for example:

Direct connection to the www.examples.com/mydoc.html

You open the connection to (usually port 80) on www.examples.com and pass an HTTP GET mydoc.html request. That all screws of HTTP, you can find on the web.

Connection through a proxy server:

You open a connection to (any port your proxy uses for example 8080) for myproxy.mydomain.com and pass a www.examples.com/mydoc.html HTTP GET request to the proxy.

Rolf Kalbermatter

Tags: NI Software

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