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/*
* Copyright (C) 2019 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.net;
import android.net.ResolverHostsParcel;
/**
* Knobs for OEM to control alternative behavior.
*
* {@hide}
*/
@JavaDerive(equals=true, toString=true)
parcelable ResolverOptionsParcel {
/**
* An IP/hostname mapping table for DNS local lookup customization.
* WARNING: this is intended for local testing and other special situations.
* Future versions of the DnsResolver module may break your assumptions.
* Injecting static mappings for public hostnames is generally A VERY BAD IDEA,
* since it makes it impossible for the domain owners to migrate the domain.
* It is also not an effective domain blocking mechanism, because apps can
* easily hardcode IPs or bypass the system DNS resolver.
*/
ResolverHostsParcel[] hosts = {};
/**
* Truncated UDP DNS response handling mode. Handling of UDP responses with the TC (truncated)
* bit set. The values are defined in {@code IDnsResolver.aidl}
* 0: TC_MODE_DEFAULT
* 1: TC_MODE_UDP_TCP
* Other values are invalid.
*/
int tcMode = 0;
/**
* The default behavior is that plaintext DNS queries are sent by the application's UID using
* fchown(). DoT are sent with an UID of AID_DNS. This option control the plaintext uid of DNS
* query.
* Setting this option to true decreases battery life because it results in the device sending
* UDP DNS queries even if the app that made the DNS lookup does not have network access.
* Anecdotal data from the field suggests that about 15% of DNS lookups are in this category.
* This option also results in data usage for UDP DNS queries being attributed to the OS instead
* of to the requesting app.
* false: set application uid on DNS sockets (default)
* true: set AID_DNS on DNS sockets
*/
boolean enforceDnsUid = false;
}
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