40 lines
1.7 KiB
C++
40 lines
1.7 KiB
C++
// Copyright (c) 2022 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_HTTP_ALTERNATE_PROTOCOL_USAGE_H_
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#define NET_HTTP_ALTERNATE_PROTOCOL_USAGE_H_
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namespace net {
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// The reason why Chrome uses a specific transport protocol for HTTP semantics.
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enum AlternateProtocolUsage {
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// Alternate Protocol was used without racing a normal connection.
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ALTERNATE_PROTOCOL_USAGE_NO_RACE = 0,
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// Alternate Protocol was used by winning a race with a normal connection.
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ALTERNATE_PROTOCOL_USAGE_WON_RACE = 1,
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// Alternate Protocol was not used by losing a race with a normal connection.
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ALTERNATE_PROTOCOL_USAGE_MAIN_JOB_WON_RACE = 2,
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// Alternate Protocol was not used because no Alternate-Protocol information
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// was available when the request was issued, but an Alternate-Protocol header
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// was present in the response.
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ALTERNATE_PROTOCOL_USAGE_MAPPING_MISSING = 3,
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// Alternate Protocol was not used because it was marked broken.
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ALTERNATE_PROTOCOL_USAGE_BROKEN = 4,
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// HTTPS DNS protocol upgrade job was used without racing with a normal
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// connection and an Alternate Protocol job.
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ALTERNATE_PROTOCOL_USAGE_DNS_ALPN_H3_JOB_WON_WITHOUT_RACE = 5,
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// HTTPS DNS protocol upgrade job won a race with a normal connection and
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// an Alternate Protocol job.
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ALTERNATE_PROTOCOL_USAGE_DNS_ALPN_H3_JOB_WON_RACE = 6,
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// This value is used when the reason is unknown and also used as the default
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// value.
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ALTERNATE_PROTOCOL_USAGE_UNSPECIFIED_REASON = 7,
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// Maximum value for the enum.
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ALTERNATE_PROTOCOL_USAGE_MAX,
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};
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} // namespace net
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#endif // NET_HTTP_ALTERNATE_PROTOCOL_USAGE_H_
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