mirror of
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52 lines
1.4 KiB
C++
52 lines
1.4 KiB
C++
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// Copyright 2014 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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#include "net/quic/quic_address_mismatch.h"
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#include "base/logging.h"
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#include "net/base/ip_address.h"
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namespace net {
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int GetAddressMismatch(const IPEndPoint& first_address,
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const IPEndPoint& second_address) {
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if (first_address.address().empty() || second_address.address().empty()) {
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return -1;
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}
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IPAddress first_ip_address = first_address.address();
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if (first_ip_address.IsIPv4MappedIPv6()) {
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first_ip_address = ConvertIPv4MappedIPv6ToIPv4(first_ip_address);
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}
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IPAddress second_ip_address = second_address.address();
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if (second_ip_address.IsIPv4MappedIPv6()) {
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second_ip_address = ConvertIPv4MappedIPv6ToIPv4(second_ip_address);
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}
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int sample;
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if (first_ip_address != second_ip_address) {
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sample = QUIC_ADDRESS_MISMATCH_BASE;
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} else if (first_address.port() != second_address.port()) {
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sample = QUIC_PORT_MISMATCH_BASE;
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} else {
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sample = QUIC_ADDRESS_AND_PORT_MATCH_BASE;
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}
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// Add an offset to |sample|:
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// V4_V4: add 0
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// V6_V6: add 1
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// V4_V6: add 2
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// V6_V4: add 3
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bool first_ipv4 = first_ip_address.IsIPv4();
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if (first_ipv4 != second_ip_address.IsIPv4()) {
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CHECK_EQ(sample, QUIC_ADDRESS_MISMATCH_BASE);
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sample += 2;
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}
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if (!first_ipv4) {
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sample += 1;
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}
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return sample;
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}
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} // namespace net
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