google_com_auto_http3_upstream_proxy.yaml

# An example config which accepts HTTP/1 requests over TCP and forwards them to google using HTTP/3
admin:
  address:
    socket_address:
      protocol: TCP
      address: 0.0.0.0
      port_value: 9901
static_resources:
  listeners:
  - name: listener_0
    address:
      socket_address:
        protocol: TCP
        address: 0.0.0.0
        port_value: 10000
    filter_chains:
    - filters:
      - name: envoy.filters.network.http_connection_manager
        typed_config:
          "@type": type.googleapis.com/envoy.extensions.filters.network.http_connection_manager.v3.HttpConnectionManager
          scheme_header_transformation:
            scheme_to_overwrite: https
          stat_prefix: ingress_http
          route_config:
            name: local_route
            virtual_hosts:
            - name: local_service
              domains: ["*"]
              routes:
              - match:
                  prefix: "/"
                route:
                  host_rewrite_literal: www.google.com
                  cluster: service_google
          http_filters:
          - name: alternate_protocols_cache
            typed_config:
              "@type": type.googleapis.com/envoy.extensions.filters.http.alternate_protocols_cache.v3.FilterConfig
              alternate_protocols_cache_options:
                name: default_alternate_protocols_cache
          - name: envoy.filters.http.router
  clusters:
  - name: service_google
    connect_timeout: 30s
    type: LOGICAL_DNS
    # Comment out the following line to test on v6 networks
    dns_lookup_family: V4_ONLY
    lb_policy: ROUND_ROBIN
    load_assignment:
      cluster_name: service_google
      endpoints:
      - lb_endpoints:
        - endpoint:
            address:
              socket_address:
                address: www.google.com
                port_value: 443
    typed_extension_protocol_options:
      envoy.extensions.upstreams.http.v3.HttpProtocolOptions:
        "@type": type.googleapis.com/envoy.extensions.upstreams.http.v3.HttpProtocolOptions
        auto_config:
          http3_protocol_options: {}
          alternate_protocols_cache_options:
            name: default_alternate_protocols_cache
        common_http_protocol_options:
          idle_timeout: 1s
    transport_socket:
      name: envoy.transport_sockets.quic
      typed_config:
        "@type": type.googleapis.com/envoy.extensions.transport_sockets.quic.v3.QuicUpstreamTransport
        upstream_tls_context:
          sni: www.google.com