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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.
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,
NETWORK_QUALITY_OBSERVATION_SOURCE_MAX,
};
} // namespace net
#endif // NET_NQE_NETWORK_QUALITY_OBSERVATION_SOURCE_H_
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