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