What is the difference between WinINet proxy and Winhttp proxy?

WinHTTP Proxy is not WinINet Proxy.

It is not an ActiveX control. It is an OLE automation control. It is used for HTTP proxy, not FTP. It is not a filter driver. It is used for HTTP/1.0, not HTTP/1.

You can use WinHTTP Proxy, but there's no WinINet Proxy for that. You can use WinHTTP Proxy, but you have to install a WinINet Proxy. WinINet Proxy is a filter driver. WinINet Proxy is used for FTP proxy. WinHTTP Proxy is used for HTTP proxy. This link explains the differences between WinINet and WinHTTP. WinINet proxy does NOT support FTP, and WinHTTP proxy does NOT support HTTP 1.1 (both are using the same "Proxy class").

The only difference is that WinINet is a wrapper around WinHTTP. WinINet is for Windows 2000/XP, while WinHTTP is for later Windows versions (such as Vista).

How to set proxy settings?

I am using firefox version 30.

0 with linuxmint 17 as of now.

When I check the proxy settings in the option "Network" -> "Proxy Settings" the options are blank and I don't know how to fill the proxy settings there. Even though when I type the server IP address in the chrome browser it is fine. What should be the solution for this problem? Please help me to get out of this problem. It's a problem in Firefox for Linux Mint 17.0 (based on Ubuntu 14.04).

You need to add the proxy settings to /etc/environment file. Open your terminal window (Ctrl-Alt-T). Enter sudo vi /etc/environment. Append the following line: httpproxy="Your proxy URL here". Don't forget to save the changes.