Check Methods

Check Methods

Xray Checker supports three methods for verifying proxy functionality.

Latency Measurement

All check methods measure latency using TTFB (Time To First Byte) - the time from request start until the first byte of the response is received. This provides consistent and accurate latency measurements across all methods.

IP Check Method (Default)

--proxy-check-method=ip

This method:

1. Gets current IP without proxy
2. Connects through proxy
3. Gets IP through proxy
4. Compares IPs to verify proxy is working

Benefits:

• More reliable verification
• Confirms actual proxy functionality
• Detects transparent proxies

Configuration:

PROXY_CHECK_METHOD=ip
PROXY_IP_CHECK_URL=https://api.ipify.org?format=text
PROXY_TIMEOUT=30

Status Check Method

--proxy-check-method=status

This method:

1. Connects through proxy
2. Requests specified URL
3. Verifies response status code

Benefits:

• Faster verification
• Lower bandwidth usage
• Works with restrictive firewalls

Configuration:

PROXY_CHECK_METHOD=status
PROXY_STATUS_CHECK_URL=http://cp.cloudflare.com/generate_204
PROXY_TIMEOUT=30

Download Check Method

--proxy-check-method=download

This method:

1. Connects through proxy
2. Downloads a file from specified URL
3. Verifies minimum bytes received

Benefits:

• Tests actual data transfer capability
• Detects proxies with connection issues
• Useful for verifying streaming/download capability

Configuration:

PROXY_CHECK_METHOD=download
PROXY_DOWNLOAD_URL=https://proof.ovh.net/files/1Mb.dat
PROXY_DOWNLOAD_TIMEOUT=60
PROXY_DOWNLOAD_MIN_SIZE=51200

Choosing the Right Method

• Use ip for most reliable verification (default)
• Use status for fast checks with minimal bandwidth
• Use download when you need to verify data transfer capability