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// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef NET_NQE_NETWORK_QUALITY_OBSERVATION_SOURCE_H_
#define NET_NQE_NETWORK_QUALITY_OBSERVATION_SOURCE_H_
namespace net {
// On Android, a Java counterpart will be generated for this enum.
// GENERATED_JAVA_ENUM_PACKAGE: org.chromium.net
// GENERATED_JAVA_CLASS_NAME_OVERRIDE: NetworkQualityObservationSource
// GENERATED_JAVA_PREFIX_TO_STRIP: NETWORK_QUALITY_OBSERVATION_SOURCE_
enum NetworkQualityObservationSource {
// The observation was taken at the request layer, e.g., a round trip time
// is recorded as the time between the request being sent and the first byte
// being received.
NETWORK_QUALITY_OBSERVATION_SOURCE_HTTP = 0,
// The observation is taken from TCP statistics maintained by the kernel.
NETWORK_QUALITY_OBSERVATION_SOURCE_TCP = 1,
// The observation is taken at the QUIC layer.
NETWORK_QUALITY_OBSERVATION_SOURCE_QUIC = 2,
// The observation is a previously cached estimate of the metric. The metric
// was computed at the HTTP layer.
NETWORK_QUALITY_OBSERVATION_SOURCE_HTTP_CACHED_ESTIMATE = 3,
// The observation is derived from network connection information provided
// by the platform. For example, typical RTT and throughput values are used
// for a given type of network connection. The metric was provided for use
// at the HTTP layer.
NETWORK_QUALITY_OBSERVATION_SOURCE_DEFAULT_HTTP_FROM_PLATFORM = 4,
// The observation came from a Chromium-external source. The metric was
// computed by the external source at the HTTP layer.
// Deprecated since external estimate provider is not currently queried.
DEPRECATED_NETWORK_QUALITY_OBSERVATION_SOURCE_HTTP_EXTERNAL_ESTIMATE = 5,
// The observation is a previously cached estimate of the metric. The metric
// was computed at the transport layer.
NETWORK_QUALITY_OBSERVATION_SOURCE_TRANSPORT_CACHED_ESTIMATE = 6,
// The observation is derived from the network connection information provided
// by the platform. For example, typical RTT and throughput values are used
// for a given type of network connection. The metric was provided for use
// at the transport layer.
NETWORK_QUALITY_OBSERVATION_SOURCE_DEFAULT_TRANSPORT_FROM_PLATFORM = 7,
// Round trip ping latency reported by H2 connections.
NETWORK_QUALITY_OBSERVATION_SOURCE_H2_PINGS = 8,
NETWORK_QUALITY_OBSERVATION_SOURCE_MAX,
};
namespace nqe {
namespace internal {
// Different categories to which an observation source can belong to. Each
// observation source belongs to exactly one category.
enum ObservationCategory {
// HTTP RTT observations measure the RTT from this device taken at the
// HTTP layer. If a HTTP-layer proxy is in use, then the RTT observations
// would measure the RTT from this device to the proxy.
OBSERVATION_CATEGORY_HTTP = 0,
// Transport RTT observations measure the RTT from this device taken at the
// transport layer. If a transport-layer proxy (e.g., TCP proxy) is in use,
// then the RTT observations would measure the RTT from this device to the
// proxy.
OBSERVATION_CATEGORY_TRANSPORT = 1,
// End to end RTT observations measure the RTT from this device to the remote
// web server. Currently, this only includes RTT observations taken from the
// QUIC connections.
OBSERVATION_CATEGORY_END_TO_END = 2,
OBSERVATION_CATEGORY_COUNT = 3
};
} // namespace internal
} // namespace nqe
} // namespace net
#endif // NET_NQE_NETWORK_QUALITY_OBSERVATION_SOURCE_H_