123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051 |
- // Copyright 2014 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.
- #include "net/quic/quic_address_mismatch.h"
- #include "base/check_op.h"
- #include "net/base/ip_address.h"
- namespace net {
- int GetAddressMismatch(const IPEndPoint& first_address,
- const IPEndPoint& second_address) {
- if (first_address.address().empty() || second_address.address().empty()) {
- return -1;
- }
- IPAddress first_ip_address = first_address.address();
- if (first_ip_address.IsIPv4MappedIPv6()) {
- first_ip_address = ConvertIPv4MappedIPv6ToIPv4(first_ip_address);
- }
- IPAddress second_ip_address = second_address.address();
- if (second_ip_address.IsIPv4MappedIPv6()) {
- second_ip_address = ConvertIPv4MappedIPv6ToIPv4(second_ip_address);
- }
- int sample;
- if (first_ip_address != second_ip_address) {
- sample = QUIC_ADDRESS_MISMATCH_BASE;
- } else if (first_address.port() != second_address.port()) {
- sample = QUIC_PORT_MISMATCH_BASE;
- } else {
- sample = QUIC_ADDRESS_AND_PORT_MATCH_BASE;
- }
- // Add an offset to |sample|:
- // V4_V4: add 0
- // V6_V6: add 1
- // V4_V6: add 2
- // V6_V4: add 3
- bool first_ipv4 = first_ip_address.IsIPv4();
- if (first_ipv4 != second_ip_address.IsIPv4()) {
- CHECK_EQ(sample, QUIC_ADDRESS_MISMATCH_BASE);
- sample += 2;
- }
- if (!first_ipv4) {
- sample += 1;
- }
- return sample;
- }
- } // namespace net
|