HTTP Inspector¶

HTTP Inspector listener filter allows detecting whether the application protocol appears to be HTTP, and if it is HTTP, it detects the HTTP protocol (HTTP/1.x or HTTP/2) further. This can be used to select a FilterChain via the application_protocols of a FilterChainMatch.

Listener filter v3 API reference
This filter should be configured with the name envoy.filters.listener.http_inspector.

Example¶

A sample filter configuration could be:

listener_filters:
  - name: "envoy.filters.listener.http_inspector"
    typed_config:
      "@type": type.googleapis.com/envoy.extensions.filters.listener.http_inspector.v3.HttpInspector

Statistics¶

This filter has a statistics tree rooted at http_inspector with the following statistics:

Name	Type	Description
read_error	Counter	Total read errors
http10_found	Counter	Total number of times HTTP/1.0 was found
http11_found	Counter	Total number of times HTTP/1.1 was found
http2_found	Counter	Total number of times HTTP/2 was found
http_not_found	Counter	Total number of times HTTP protocol was not found