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// @generated
// This file is @generated by prost-build.
// \[#protodoc-title: c-ares DNS resolver\]
// \[#extension: envoy.network.dns_resolver.cares\]
/// Configuration for c-ares DNS resolver.
/// \[#next-free-field: 9\]
#[allow(clippy::derive_partial_eq_without_eq)]
#[derive(Clone, PartialEq, ::prost::Message)]
pub struct CaresDnsResolverConfig {
/// A list of dns resolver addresses.
/// :ref:`use_resolvers_as_fallback<envoy_v3_api_field_extensions.network.dns_resolver.cares.v3.CaresDnsResolverConfig.use_resolvers_as_fallback>`
/// below dictates if the DNS client should override system defaults or only use the provided
/// resolvers if the system defaults are not available, i.e., as a fallback.
#[prost(message, repeated, tag="1")]
pub resolvers: ::prost::alloc::vec::Vec<super::super::super::super::super::config::core::v3::Address>,
/// If true use the resolvers listed in the
/// :ref:`resolvers<envoy_v3_api_field_extensions.network.dns_resolver.cares.v3.CaresDnsResolverConfig.resolvers>`
/// field only if c-ares is unable to obtain a
/// nameserver from the system (e.g., /etc/resolv.conf).
/// Otherwise, the resolvers listed in the resolvers list will override the default system
/// resolvers. Defaults to false.
#[prost(bool, tag="3")]
pub use_resolvers_as_fallback: bool,
/// The resolver will query available network interfaces and determine if there are no available
/// interfaces for a given IP family. It will then filter these addresses from the results it
/// presents. e.g., if there are no available IPv4 network interfaces, the resolver will not
/// provide IPv4 addresses.
#[prost(bool, tag="4")]
pub filter_unroutable_families: bool,
/// Configuration of DNS resolver option flags which control the behavior of the DNS resolver.
#[prost(message, optional, tag="2")]
pub dns_resolver_options: ::core::option::Option<super::super::super::super::super::config::core::v3::DnsResolverOptions>,
/// This option allows for number of UDP based DNS queries to be capped. Note, this
/// is only applicable to c-ares DNS resolver currently.
#[prost(message, optional, tag="5")]
pub udp_max_queries: ::core::option::Option<super::super::super::super::super::super::google::protobuf::UInt32Value>,
/// The number of seconds each name server is given to respond to a query on the first try of any given server.
///
/// Note: While the c-ares library defaults to 2 seconds, Envoy's default (if this field is unset) is 5 seconds.
/// This adjustment was made to maintain the previous behavior after users reported an increase in DNS resolution times.
#[prost(message, optional, tag="6")]
pub query_timeout_seconds: ::core::option::Option<super::super::super::super::super::super::google::protobuf::UInt64Value>,
/// The maximum number of query attempts the resolver will make before giving up.
/// Each attempt may use a different name server.
///
/// Note: While the c-ares library defaults to 3 attempts, Envoy's default (if this field is unset) is 4 attempts.
/// This adjustment was made to maintain the previous behavior after users reported an increase in DNS resolution times.
#[prost(message, optional, tag="7")]
pub query_tries: ::core::option::Option<super::super::super::super::super::super::google::protobuf::UInt32Value>,
/// Enable round-robin selection of name servers for DNS resolution. When enabled, the resolver will cycle through the
/// list of name servers for each resolution request. This can help distribute the query load across multiple name
/// servers. If disabled (default), the resolver will try name servers in the order they are configured.
///
/// Note: This setting overrides any system configuration for name server rotation.
#[prost(bool, tag="8")]
pub rotate_nameservers: bool,
}
// @@protoc_insertion_point(module)
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