Protocols

Explore supported Residential Proxy protocols and learn how to configure HTTP, HTTPS, HTTPS/3, and SOCKS5 connections.

HTTP

Our documentation includes code examples showcasing how to connect to the proxies using HTTP protocol. The protocol is supported by common libraries and third-party software.

HTTPS

You can also use the fully encrypted HTTP connection using HTTPS protocol for an extra layer of security. For that, you have to add https:// to your proxy entry point. For example: https://pr.oxylabs.io:7777 (this also applies to country-specific entry nodes).

Please note that some libraries (or their older versions) and some 3rd party tools may not support HTTPS protocol, so double-check before making changes to your code.

HTTP/3

HTTP3 is supported via proxies that can handle UDP traffic, as it is based on QUIC – a UDP-based transport protocol.

Standard HTTP/HTTPS proxy endpoints are not compatible with HTTP3, so to proxy requests, you need to use a SOCKS5 proxy with UDP traffic support, available through the following dedicated endpoint:

socks.pr.oxylabs.io:7777

Most common tools do not natively support HTTP3 over SOCKS5 with UDP, so custom implementations may be required, such as our custom HTTP/3 Go, C#, and Java solution repositories on GitHub.

Note: Make sure your firewall allows UDP traffic on the required ports, as many ports block UDP by default.

SOCKS5

• SOCKS5 proxy authentication is not supported by Google Chrome. Use Mozilla Firefox or HTTP clients instead.
• Certain target websites can identify proxy traffic using SOCKS5. If you encounter connection errors, switch to HTTP or HTTPS.

Oxylabs Residential Proxies support SOCKS5 connections over TCP and UDP. For a SOCKS5 connection, use socks5h:// with your connection string:

curl -x socks5h://pr.oxylabs.io:7777 -U "customer-USERNAME:PASSWORD" ip.oxylabs.io/location

SOCKS5 does not support country-specific entry point domains. To target a specific location, include the additional parameters within your username (e.g., France):

curl -x socks5h://pr.oxylabs.io:7777 -U "customer-USERNAME-cc-FR:PASSWORD" ip.oxylabs.io/location

Ports of proxies

The default configuration of proxy ports includes 80 and 443, designed to accommodate standard HTTP and HTTPS protocols. To access other ports, it is necessary to undergo compliance verification, please contact our support.

Protocol	Transport	Port
HTTP	TCP	80
HTTPS	TCP	443