IDHTTP.Get - "Socket Error #11001. Host not found""

[rlebeau]

So, would it be enough to let them specify values for the IDHTTP's ProxyParams property (TIdProxyConnectionInfo) ?

If they are using an HTTP proxy, then yes.

But if they are using a SOCKS proxy, then you will have to assign a TIdIOHandlerStack component (for non-HTTPS requests) or TIdSSLIOHandlerSocketBase-derived component like TIdSSLIOHandlerSocketOpenSSL (for HTTPS requests) to the TIdIOHandler.IOHandler property, and then you can assign a TIdSocksInfo component to the TIdHTTP.IOHandler.TransparentProxy property.

This same technique can also be used for HTTP proxies, replacing TIdSocksInfo with TIdConnectThroughHttpProxy (but I would not recommend doing that for TIdHTTP, since it has its own built-in HTTP proxy support).