Where each one sits
An HTTP proxy operates at the application layer. Your client sends it a normal HTTP request with the full destination URL, the proxy reads it, makes the request on your behalf, and returns the response. Because it parses the traffic, it can cache responses, rewrite headers, or refuse requests based on their contents.
SOCKS5 sits lower, at the session layer. The client performs a short handshake naming a destination host and port, and from that point the proxy is a pipe. It has no idea whether the bytes are HTTP, SSH, a database wire protocol, or a game.
What about HTTPS?
This is the part that most often causes confusion. An HTTP proxy cannot read an encrypted connection, so for HTTPS it uses the CONNECT method: the client asks the proxy to open a raw tunnel to a host and port, and the proxy forwards bytes without inspecting them.
In other words, an HTTP proxy handling HTTPS behaves almost exactly like SOCKS5. The encryption runs end to end between your client and the destination either way, and the proxy sees the same thing in both cases: which host you connected to, and how much data moved.
Where the difference actually bites
Two places, and they are both about scope rather than performance.
Non-HTTP protocols. Many HTTP proxies only allow CONNECT to port 443, because that is all a browser needs. If you are tunnelling SSH, a mail protocol, or a database connection, SOCKS5 is the one that works.
UDP. HTTP proxying is TCP only. SOCKS5 has a UDP association mode, which matters for DNS, some VoIP, and game traffic. Support varies by server, so test it rather than assuming.
Using each one
Most tools accept a proxy URL where the scheme selects the protocol. With curl, the same request through each:
# HTTP proxy curl -x http://USER:[email protected]:8080 https://example.com # SOCKS5, resolving DNS locally curl -x socks5://USER:[email protected]:9080 https://example.com # SOCKS5, resolving DNS at the proxy (usually what you want) curl -x socks5h://USER:[email protected]:9080 https://example.com
That last one is worth knowing about. With plain socks5 your machine resolves the hostname before connecting, so your local DNS resolver sees every domain you visit — which quietly undoes part of the reason you used a proxy. With socks5h the hostname is sent to the proxy and resolved there.
So which one
If you are working with websites and your tool supports it, use HTTP — broader support, fewer surprises. If you need anything that is not HTTP, need UDP, or want DNS resolved at the proxy, use SOCKS5.
On Virteche Cloud you get both on every address, so this is a per-task decision rather than a purchase decision. For a walkthrough of the credentials themselves, see how to set up a proxy.