HTTP3/QUIC Protocol Support

Evomi Residential Proxies offer HTTP3/QUIC protocol support for enhanced performance and advanced antibot evasion. This cutting-edge feature enables modern protocol compatibility, crucial for bypassing sophisticated detection systems that flag connections lacking HTTP3 support.

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SOCKS5 Protocol Required
HTTP3/QUIC support is only available when using the SOCKS5 protocol. This feature will not work with HTTP/HTTPS proxy protocols. Make sure your client supports SOCKS5 connections.

Why HTTP3/QUIC Matters

Most proxy services don’t support HTTP3/QUIC, making it easy for antibot systems to detect proxy usage. Modern browsers automatically negotiate HTTP3 connections, and websites increasingly check for this capability. Without HTTP3 support, your requests may be flagged as automated traffic.

Key Benefits

  • Antibot Evasion: Mimics genuine browser behavior with full HTTP3 capability
  • Enhanced Performance: Reduced latency and improved connection reliability
  • Future-Proof: Support for the latest web protocol standards
  • Detection Avoidance: Prevents flagging by HTTP3-aware security systems

Implementation

Append _http3-1 to your proxy password to enable HTTP3/QUIC protocol support. Use the SOCKS5 protocol:

socks5://testuser:[email protected]:1000

Examples

CURL:

# Using SOCKS5 protocol
curl --socks5 rp.evomi.com:1000 -U testuser:testpassword_http3-1 https://ip.evomi.com/s

# Combined with geographic targeting
curl --socks5 rp.evomi.com:1000 -U testuser:testpassword_country-US_http3-1 https://ip.evomi.com/s
import requests
from requests.auth import HTTPProxyAuth

proxies = {
"http": "socks5://rp.evomi.com:1000",
"https": "socks5://rp.evomi.com:1000"
}
auth = HTTPProxyAuth("testuser", "testpassword_http3-1")
response = requests.get("https://ip.evomi.com/s", proxies=proxies, auth=auth)
print(response.text)
const fetch = require('node-fetch');
const { SocksProxyAgent } = require('socks-proxy-agent');

const proxyUrl = 'socks5://testuser:[email protected]:1000';
const agent = new SocksProxyAgent(proxyUrl);
const url = 'https://ip.evomi.com/s';

fetch(url, { agent })
.then(res => res.text())
.then(body => console.log(body));

Technical Details

  • Protocol: HTTP/3 over QUIC (UDP-based)
  • TLS: Integrated TLS 1.3 encryption
  • Multiplexing: Stream-level multiplexing without head-of-line blocking
  • Connection Migration: Robust connection handling across network changes
  • Protocol Requirement: SOCKS5 protocol only (not compatible with HTTP/HTTPS proxies)

Common Use Cases

  • Web Scraping: Bypass HTTP3-aware antibot systems
  • Browser Automation: Ensure genuine browser protocol compatibility
  • Performance Testing: Evaluate HTTP3 performance characteristics
  • Security Research: Test HTTP3-specific security implementations
  • E-commerce Monitoring: Access sites with advanced bot detection
  • SEO Analysis: Crawl modern websites without triggering blocks
ℹ️
Protocol Compatibility
HTTP3/QUIC is backward compatible. If the target server doesn’t support HTTP3, connections automatically fall back to HTTP/2 or HTTP/1.1. Use our Proxy Generator to test HTTP3 compatibility with specific targets.
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Note: The http3 parameter is an extra feature. Using it will incur additional bandwidth consumption. You can see the exact extra usage history in the dashboard and in the Generator.
Stealth Configuration
Combine with other parameters for maximum stealth:
_http3-1_fraudscore-0_device-windows
_country-US_http3-1_isp-comcast_latency-100
_zip-90210_http3-1_device-apple