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/*
* Copyright 2015 The WebRTC Project Authors. All rights reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "p2p/stunprober/stun_prober.h"
#include <stdint.h>
#include <memory>
#include <utility>
#include "p2p/base/basic_packet_socket_factory.h"
#include "p2p/base/test_stun_server.h"
#include "rtc_base/gunit.h"
#include "rtc_base/ip_address.h"
#include "rtc_base/ssl_adapter.h"
#include "rtc_base/virtual_socket_server.h"
#include "test/gtest.h"
using stunprober::AsyncCallback;
using stunprober::StunProber;
namespace stunprober {
namespace {
const rtc::SocketAddress kLocalAddr("192.168.0.1", 0);
const rtc::SocketAddress kStunAddr1("1.1.1.1", 3478);
const rtc::SocketAddress kStunAddr2("1.1.1.2", 3478);
const rtc::SocketAddress kFailedStunAddr("1.1.1.3", 3478);
const rtc::SocketAddress kStunMappedAddr("77.77.77.77", 0);
} // namespace
class StunProberTest : public ::testing::Test {
public:
StunProberTest()
: ss_(std::make_unique<rtc::VirtualSocketServer>()),
main_(ss_.get()),
result_(StunProber::SUCCESS),
stun_server_1_(cricket::TestStunServer::Create(ss_.get(), kStunAddr1)),
stun_server_2_(cricket::TestStunServer::Create(ss_.get(), kStunAddr2)) {
stun_server_1_->set_fake_stun_addr(kStunMappedAddr);
stun_server_2_->set_fake_stun_addr(kStunMappedAddr);
rtc::InitializeSSL();
}
static constexpr int pings_per_ip = 3;
void set_expected_result(int result) { result_ = result; }
void CreateProber(rtc::PacketSocketFactory* socket_factory,
std::vector<const rtc::Network*> networks) {
prober_ = std::make_unique<StunProber>(
socket_factory, rtc::Thread::Current(), std::move(networks));
}
void StartProbing(rtc::PacketSocketFactory* socket_factory,
const std::vector<rtc::SocketAddress>& addrs,
std::vector<const rtc::Network*> networks,
bool shared_socket,
uint16_t interval,
uint16_t pings_per_ip) {
CreateProber(socket_factory, networks);
prober_->Start(addrs, shared_socket, interval, pings_per_ip,
100 /* timeout_ms */,
[this](StunProber* prober, int result) {
StopCallback(prober, result);
});
}
void RunProber(bool shared_mode) {
std::vector<rtc::SocketAddress> addrs;
addrs.push_back(kStunAddr1);
addrs.push_back(kStunAddr2);
// Add a non-existing server. This shouldn't pollute the result.
addrs.push_back(kFailedStunAddr);
RunProber(shared_mode, addrs, /* check_results= */ true);
}
void RunProber(bool shared_mode,
const std::vector<rtc::SocketAddress>& addrs,
bool check_results) {
rtc::Network ipv4_network1("test_eth0", "Test Network Adapter 1",
rtc::IPAddress(0x12345600U), 24);
ipv4_network1.AddIP(rtc::IPAddress(0x12345678));
std::vector<const rtc::Network*> networks;
networks.push_back(&ipv4_network1);
auto socket_factory =
std::make_unique<rtc::BasicPacketSocketFactory>(ss_.get());
// Set up the expected results for verification.
std::set<std::string> srflx_addresses;
srflx_addresses.insert(kStunMappedAddr.ToString());
const uint32_t total_pings_tried =
static_cast<uint32_t>(pings_per_ip * addrs.size());
// The reported total_pings should not count for pings sent to the
// kFailedStunAddr.
const uint32_t total_pings_reported = total_pings_tried - pings_per_ip;
StartProbing(socket_factory.get(), addrs, std::move(networks), shared_mode,
3, pings_per_ip);
WAIT(stopped_, 1000);
EXPECT_TRUE(prober_->GetStats(&stats_));
if (check_results) {
EXPECT_EQ(stats_.success_percent, 100);
EXPECT_TRUE(stats_.nat_type > stunprober::NATTYPE_NONE);
EXPECT_EQ(stats_.srflx_addrs, srflx_addresses);
EXPECT_EQ(static_cast<uint32_t>(stats_.num_request_sent),
total_pings_reported);
EXPECT_EQ(static_cast<uint32_t>(stats_.num_response_received),
total_pings_reported);
}
}
StunProber* prober() { return prober_.get(); }
StunProber::Stats& stats() { return stats_; }
private:
void StopCallback(StunProber* prober, int result) {
EXPECT_EQ(result, result_);
stopped_ = true;
}
std::unique_ptr<rtc::VirtualSocketServer> ss_;
rtc::AutoSocketServerThread main_;
std::unique_ptr<StunProber> prober_;
int result_ = 0;
bool stopped_ = false;
std::unique_ptr<cricket::TestStunServer> stun_server_1_;
std::unique_ptr<cricket::TestStunServer> stun_server_2_;
StunProber::Stats stats_;
};
TEST_F(StunProberTest, NonSharedMode) {
RunProber(false);
}
TEST_F(StunProberTest, SharedMode) {
RunProber(true);
}
TEST_F(StunProberTest, ResolveNonexistentHostname) {
std::vector<rtc::SocketAddress> addrs;
addrs.push_back(kStunAddr1);
// Add a non-existing server by name. This should cause a failed lookup.
addrs.push_back(rtc::SocketAddress("nonexistent.test", 3478));
RunProber(false, addrs, false);
// One server is pinged
EXPECT_EQ(stats().raw_num_request_sent, pings_per_ip);
}
TEST_F(StunProberTest, ResolveExistingHostname) {
std::vector<rtc::SocketAddress> addrs;
addrs.push_back(kStunAddr1);
// Add a non-existing server by name. This should cause a failed lookup.
addrs.push_back(rtc::SocketAddress("localhost", 3478));
RunProber(false, addrs, false);
// Two servers are pinged, only one responds.
// TODO(bugs.webrtc.org/15559): Figure out why this doesn't always work
// EXPECT_EQ(stats().raw_num_request_sent, pings_per_ip * 2);
EXPECT_EQ(stats().num_request_sent, pings_per_ip);
}
} // namespace stunprober
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