HTTP vs SOCKS5 Proxies: Which One Should You Use?

HTTP proxy and SOCKS5 proxy are the two protocols you will see in nearly every proxy list. Both forward your traffic through another address, but they work at different levels, and the right choice depends on what you are sending.

HTTP and HTTPS proxies

An HTTP proxy understands web traffic. For plain http:// pages it reads your request and passes it on, so it can also read, log, cache or change that request. For https:// pages your client asks the proxy to open a tunnel with the CONNECT method and then talks to the website directly inside that tunnel, so the proxy sees which site you connect to but not what you send. Providers label proxies that support this as "HTTP/HTTPS". A proxy that you reach over an encrypted connection to the proxy itself is much rarer, and is the only kind that is strictly an HTTPS proxy.

SOCKS5 proxies

SOCKS5 works at a lower level and does not care what you are sending. It opens a connection to the destination you name and passes bytes in both directions, so it works with web traffic, email clients, torrent clients, games and any other TCP application, and it can carry UDP traffic as well when the proxy supports it. It supports sign-in with a username and password. It does not read or alter your requests, so it adds no headers.

What is the difference between an HTTP proxy and a SOCKS5 proxy?

An HTTP proxy understands web traffic and can read or change plain HTTP requests, while a SOCKS5 proxy simply forwards bytes for any TCP application and adds no headers. Use HTTP for browsing and scraping; use SOCKS5 for torrents, games, email clients and anything that is not a web page.

DNS: who looks up the website name?

With a plain socks5:// setting, many clients look up the website name on your own machine and send only the IP address to the proxy, which tells your DNS resolver which sites you visit. With socks5h:// the proxy looks up the name instead. HTTP proxies look up the name themselves. If you use a proxy for privacy, or to see a site as someone in another country would, make sure the proxy resolves the name. Our WebRTC leak test covers a related leak in browsers.

Which should you choose?

• Web scraping and browsers. HTTP/HTTPS is the simplest choice and works with almost every tool.
• Non-web apps, torrenting, games or mixed traffic. SOCKS5.
• A tool that supports only one protocol. Use the one it supports. The differences rarely matter.

How to tell what you have

Your provider's dashboard usually says, but a proxy list may not. The proxy checker auto-detects the protocol: it tries HTTP first, falls back to SOCKS5, and reports which one answered. Pointing the wrong protocol at a port is a common cause of the errors in our proxy error guide. For what each kind reveals about you, read transparent, anonymous and elite proxies.