AdGuardDNS/doc/debughttp.md

AdGuard DNS debug HTTP API

The AdGuard DNS debug HTTP API is served on LISTEN_PORT and contains various private debugging information.

Contents

• GET /health-check
• GET /metrics
• GET /debug/pprof
• POST /debug/api/cache/clear
• POST /debug/api/refresh
• POST /dnsdb/csv

GET /health-check

A simple health check API. Always responds with a 200 OK status and the plain-text body OK.

GET /metrics

Prometheus metrics HTTP API. See the metrics page for more details.

GET /debug/pprof

The HTTP interface of Go's PProf HTTP API.

POST /debug/api/cache/clear

Run some cache purges manually. The ids is an array of path patterns to match the cache IDs.

Example request:

curl -d '{"ids":["filters/rulelist/*"]}' -v "http://${LISTEN_ADDR}:${LISTEN_PORT}/debug/api/cache/clear"

Request body example:

{
  "ids": [
    "filters/hashprefix/adult_blocking",
    "filters/custom"
  ]
}

Supported IDs:

• dns/ecscache_no_ecs
• dns/ecscache_with_ecs
• filters/blocked_service/*
• filters/custom
• filters/hashprefix/adult_blocking
• filters/hashprefix/newly_registered_domains
• filters/hashprefix/safe_browsing
• filters/rulelist/*
• filters/safe_search/general_safe_search
• geoip/host
• geoip/ip

Note that you can clear the cache of any individual blocked service, e.g. filters/blocked_service/youtube, and any filter rule list, e.g. filters/rulelist/adguard_dns_filter.

The special ID *, when used alone, causes all available caches to be purged. Use with caution.

Response body example:

{
  "results": {
    "filters/hashprefix/adult_blocking": "ok",
    "filters/custom": "ok"
  }
}

POST /debug/api/refresh

Run some refresh jobs manually. The ids is an array of path patterns to match the refreshers IDs. This refresh does not alter the time of the next automatic refresh.

Example request:

curl -d '{"ids":["filters/*"]}' -v "http://${LISTEN_ADDR}:${LISTEN_PORT}/debug/api/refresh"

Request body example:

{
  "ids": [
    "filters/hashprefix/adult_blocking",
    "filters/storage"
  ]
}

Supported IDs:

• allowlist
• billstat
• filters/hashprefix/adult_blocking
• filters/hashprefix/newly_registered_domains
• filters/hashprefix/safe_browsing
• filters/storage
• geoip
• profiledb
• rulestat
• ticket_rotator

The special ID *, when used alone, causes all available refresh tasks to be performed. Use with caution.

Response body example:

{
  "results": {
    "filters/hashprefix/adult_blocking": "ok",
    "filters/storage": "ok"
  }
}

POST /dnsdb/csv

The CSV dump of the current DNSDB statistics. Example of the output:

example.com,A,NOERROR,93.184.216.34,42
example.com,AAAA,NOERROR,2606:2800:220:1:248:1893:25c8:1946,123

The response is sent with the Transfer-Encoding set to chunked and with an HTTP trailer named X-Error which describes errors that might have occurred during the database dump.