This action will add the header if it doesn't already exist.

This action will append the specified value to the existing values if the header already exists.

This action will overwrite the specified value by discarding any existing values if the header already exists.

Socket options are applied after binding the socket to a port but before calling listen().

Socket options are applied after calling listen().

Socket options are applied after socket creation but before binding the socket to a port.

The transport is used for incoming traffic.

The transport is used for outgoing traffic.

Default option is unspecified.

Enum value maps for HeaderValueOption_HeaderAppendAction.

Enum value maps for HeaderValueOption_HeaderAppendAction.

Enum value maps for RequestMethod.

Enum value maps for RequestMethod.

Enum value maps for RoutingPriority.

Enum value maps for RoutingPriority.

Enum value maps for SocketAddress_Protocol.

Enum value maps for SocketAddress_Protocol.

Enum value maps for SocketOption_SocketState.

Enum value maps for SocketOption_SocketState.

Enum value maps for TrafficDirection.

Enum value maps for TrafficDirection.

Addresses specify either a logical or physical address and port, which are used to tell Envoy where to bind/listen, connect to upstream and find management servers.

Async data source which support async data fetch.

Configuration defining a jittered exponential back off strategy.

BuildVersion combines SemVer version of extension with free-form build information (i.e.

CidrRange specifies an IP Address and a prefix length to construct the subnet mask for a `CIDR <https://tools.ietf.org/html/rfc4632>`_ range.

Identifies a specific ControlPlane instance that Envoy is connected to.

Data source consisting of either a file or an inline value.

[#not-implemented-hide:] The address represents an envoy internal listener.

Version and identification for an Envoy extension.

Wrapper for a set of headers.

Header name/value pair.

Header name/value pair plus option to control append behavior.

Envoy external URI descriptor.

Identifies location of where either Envoy runs or where upstream hosts run.

Metadata provides additional inputs to filters based on matched listeners, filter chains, routes and endpoints.

Identifies a specific Envoy instance.

The message specifies how to fetch data from remote and how to verify it.

The message specifies the retry policy of remote data source when fetching fails.

Runtime derived double with a default when not specified.

Runtime derived bool with a default when not specified.

Runtime derived FractionalPercent with defaults for when the numerator or denominator is not specified via a runtime key.

Runtime derived percentage with a default when not specified.

Runtime derived uint32 with a default when not specified.

[#next-free-field: 7].

Generic socket option message.

Configuration for transport socket in :ref:`listeners <config_listeners>` and :ref:`clusters <envoy_v3_api_msg_config.cluster.v3.Cluster>`.

A directory that is watched for changes, e.g.

Describes the supported actions types for header append action.

HTTP request method.

Envoy supports :ref:`upstream priority routing <arch_overview_http_routing_priority>` both at the route and the virtual cluster level.

Identifies the direction of the traffic relative to the local Envoy.