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/*
* Copyright 2009 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 <memory>
#include "webrtc/p2p/base/basicpacketsocketfactory.h"
#include "webrtc/p2p/base/relayport.h"
#include "webrtc/p2p/base/relayserver.h"
#include "webrtc/base/gunit.h"
#include "webrtc/base/helpers.h"
#include "webrtc/base/logging.h"
#include "webrtc/base/physicalsocketserver.h"
#include "webrtc/base/socketadapters.h"
#include "webrtc/base/socketaddress.h"
#include "webrtc/base/ssladapter.h"
#include "webrtc/base/thread.h"
#include "webrtc/base/virtualsocketserver.h"
using rtc::SocketAddress;
static const SocketAddress kLocalAddress = SocketAddress("192.168.1.2", 0);
static const SocketAddress kRelayUdpAddr = SocketAddress("99.99.99.1", 5000);
static const SocketAddress kRelayTcpAddr = SocketAddress("99.99.99.2", 5001);
static const SocketAddress kRelaySslAddr = SocketAddress("99.99.99.3", 443);
static const SocketAddress kRelayExtAddr = SocketAddress("99.99.99.3", 5002);
static const int kTimeoutMs = 1000;
static const int kMaxTimeoutMs = 5000;
// Tests connecting a RelayPort to a fake relay server
// (cricket::RelayServer) using all currently available protocols. The
// network layer is faked out by using a VirtualSocketServer for
// creating sockets. The test will monitor the current state of the
// RelayPort and created sockets by listening for signals such as,
// SignalConnectFailure, SignalConnectTimeout, SignalSocketClosed and
// SignalReadPacket.
class RelayPortTest : public testing::Test,
public sigslot::has_slots<> {
public:
RelayPortTest()
: main_(rtc::Thread::Current()),
physical_socket_server_(new rtc::PhysicalSocketServer),
virtual_socket_server_(new rtc::VirtualSocketServer(
physical_socket_server_.get())),
ss_scope_(virtual_socket_server_.get()),
network_("unittest", "unittest", rtc::IPAddress(INADDR_ANY), 32),
socket_factory_(rtc::Thread::Current()),
username_(rtc::CreateRandomString(16)),
password_(rtc::CreateRandomString(16)),
relay_port_(cricket::RelayPort::Create(main_, &socket_factory_,
&network_,
kLocalAddress.ipaddr(),
0, 0, username_, password_)),
relay_server_(new cricket::RelayServer(main_)) {
}
void OnReadPacket(rtc::AsyncPacketSocket* socket,
const char* data, size_t size,
const rtc::SocketAddress& remote_addr,
const rtc::PacketTime& packet_time) {
received_packet_count_[socket]++;
}
void OnConnectFailure(const cricket::ProtocolAddress* addr) {
failed_connections_.push_back(*addr);
}
void OnSoftTimeout(const cricket::ProtocolAddress* addr) {
soft_timedout_connections_.push_back(*addr);
}
protected:
virtual void SetUp() {
// The relay server needs an external socket to work properly.
rtc::AsyncUDPSocket* ext_socket =
CreateAsyncUdpSocket(kRelayExtAddr);
relay_server_->AddExternalSocket(ext_socket);
// Listen for failures.
relay_port_->SignalConnectFailure.
connect(this, &RelayPortTest::OnConnectFailure);
// Listen for soft timeouts.
relay_port_->SignalSoftTimeout.
connect(this, &RelayPortTest::OnSoftTimeout);
}
// Udp has the highest 'goodness' value of the three different
// protocols used for connecting to the relay server. As soon as
// PrepareAddress is called, the RelayPort will start trying to
// connect to the given UDP address. As soon as a response to the
// sent STUN allocate request message has been received, the
// RelayPort will consider the connection to be complete and will
// abort any other connection attempts.
void TestConnectUdp() {
// Add a UDP socket to the relay server.
rtc::AsyncUDPSocket* internal_udp_socket =
CreateAsyncUdpSocket(kRelayUdpAddr);
rtc::AsyncSocket* server_socket = CreateServerSocket(kRelayTcpAddr);
relay_server_->AddInternalSocket(internal_udp_socket);
relay_server_->AddInternalServerSocket(server_socket, cricket::PROTO_TCP);
// Now add our relay addresses to the relay port and let it start.
relay_port_->AddServerAddress(
cricket::ProtocolAddress(kRelayUdpAddr, cricket::PROTO_UDP));
relay_port_->AddServerAddress(
cricket::ProtocolAddress(kRelayTcpAddr, cricket::PROTO_TCP));
relay_port_->PrepareAddress();
// Should be connected.
EXPECT_TRUE_WAIT(relay_port_->IsReady(), kTimeoutMs);
// Make sure that we are happy with UDP, ie. not continuing with
// TCP, SSLTCP, etc.
WAIT(relay_server_->HasConnection(kRelayTcpAddr), kTimeoutMs);
// Should have only one connection.
EXPECT_EQ(1, relay_server_->GetConnectionCount());
// Should be the UDP address.
EXPECT_TRUE(relay_server_->HasConnection(kRelayUdpAddr));
}
// TCP has the second best 'goodness' value, and as soon as UDP
// connection has failed, the RelayPort will attempt to connect via
// TCP. Here we add a fake UDP address together with a real TCP
// address to simulate an UDP failure. As soon as UDP has failed the
// RelayPort will try the TCP adress and succed.
void TestConnectTcp() {
// Create a fake UDP address for relay port to simulate a failure.
cricket::ProtocolAddress fake_protocol_address =
cricket::ProtocolAddress(kRelayUdpAddr, cricket::PROTO_UDP);
// Create a server socket for the RelayServer.
rtc::AsyncSocket* server_socket = CreateServerSocket(kRelayTcpAddr);
relay_server_->AddInternalServerSocket(server_socket, cricket::PROTO_TCP);
// Add server addresses to the relay port and let it start.
relay_port_->AddServerAddress(
cricket::ProtocolAddress(fake_protocol_address));
relay_port_->AddServerAddress(
cricket::ProtocolAddress(kRelayTcpAddr, cricket::PROTO_TCP));
relay_port_->PrepareAddress();
EXPECT_FALSE(relay_port_->IsReady());
// Should have timed out in 200 + 200 + 400 + 800 + 1600 ms = 3200ms.
// Add some margin of error for slow bots.
// TODO(deadbeef): Use simulated clock instead of just increasing timeouts
// to fix flaky tests.
EXPECT_TRUE_WAIT(HasFailed(&fake_protocol_address), 5000);
// Wait until relayport is ready.
EXPECT_TRUE_WAIT(relay_port_->IsReady(), kMaxTimeoutMs);
// Should have only one connection.
EXPECT_EQ(1, relay_server_->GetConnectionCount());
// Should be the TCP address.
EXPECT_TRUE(relay_server_->HasConnection(kRelayTcpAddr));
}
void TestConnectSslTcp() {
// Create a fake TCP address for relay port to simulate a failure.
// We skip UDP here since transition from UDP to TCP has been
// tested above.
cricket::ProtocolAddress fake_protocol_address =
cricket::ProtocolAddress(kRelayTcpAddr, cricket::PROTO_TCP);
// Create a ssl server socket for the RelayServer.
rtc::AsyncSocket* ssl_server_socket =
CreateServerSocket(kRelaySslAddr);
relay_server_->AddInternalServerSocket(ssl_server_socket,
cricket::PROTO_SSLTCP);
// Create a tcp server socket that listens on the fake address so
// the relay port can attempt to connect to it.
std::unique_ptr<rtc::AsyncSocket> tcp_server_socket(
CreateServerSocket(kRelayTcpAddr));
// Add server addresses to the relay port and let it start.
relay_port_->AddServerAddress(fake_protocol_address);
relay_port_->AddServerAddress(
cricket::ProtocolAddress(kRelaySslAddr, cricket::PROTO_SSLTCP));
relay_port_->PrepareAddress();
EXPECT_FALSE(relay_port_->IsReady());
// Should have timed out in 3000 ms(relayport.cc, kSoftConnectTimeoutMs).
EXPECT_TRUE_WAIT_MARGIN(HasTimedOut(&fake_protocol_address), 3000, 100);
// Wait until relayport is ready.
EXPECT_TRUE_WAIT(relay_port_->IsReady(), kMaxTimeoutMs);
// Should have only one connection.
EXPECT_EQ(1, relay_server_->GetConnectionCount());
// Should be the SSLTCP address.
EXPECT_TRUE(relay_server_->HasConnection(kRelaySslAddr));
}
private:
rtc::AsyncUDPSocket* CreateAsyncUdpSocket(const SocketAddress addr) {
rtc::AsyncSocket* socket =
virtual_socket_server_->CreateAsyncSocket(SOCK_DGRAM);
rtc::AsyncUDPSocket* packet_socket =
rtc::AsyncUDPSocket::Create(socket, addr);
EXPECT_TRUE(packet_socket != NULL);
packet_socket->SignalReadPacket.connect(this, &RelayPortTest::OnReadPacket);
return packet_socket;
}
rtc::AsyncSocket* CreateServerSocket(const SocketAddress addr) {
rtc::AsyncSocket* socket =
virtual_socket_server_->CreateAsyncSocket(SOCK_STREAM);
EXPECT_GE(socket->Bind(addr), 0);
EXPECT_GE(socket->Listen(5), 0);
return socket;
}
bool HasFailed(cricket::ProtocolAddress* addr) {
for (size_t i = 0; i < failed_connections_.size(); i++) {
if (failed_connections_[i].address == addr->address &&
failed_connections_[i].proto == addr->proto) {
return true;
}
}
return false;
}
bool HasTimedOut(cricket::ProtocolAddress* addr) {
for (size_t i = 0; i < soft_timedout_connections_.size(); i++) {
if (soft_timedout_connections_[i].address == addr->address &&
soft_timedout_connections_[i].proto == addr->proto) {
return true;
}
}
return false;
}
typedef std::map<rtc::AsyncPacketSocket*, int> PacketMap;
rtc::Thread* main_;
std::unique_ptr<rtc::PhysicalSocketServer> physical_socket_server_;
std::unique_ptr<rtc::VirtualSocketServer> virtual_socket_server_;
rtc::SocketServerScope ss_scope_;
rtc::Network network_;
rtc::BasicPacketSocketFactory socket_factory_;
std::string username_;
std::string password_;
std::unique_ptr<cricket::RelayPort> relay_port_;
std::unique_ptr<cricket::RelayServer> relay_server_;
std::vector<cricket::ProtocolAddress> failed_connections_;
std::vector<cricket::ProtocolAddress> soft_timedout_connections_;
PacketMap received_packet_count_;
};
TEST_F(RelayPortTest, ConnectUdp) {
TestConnectUdp();
}
TEST_F(RelayPortTest, ConnectTcp) {
TestConnectTcp();
}
TEST_F(RelayPortTest, ConnectSslTcp) {
TestConnectSslTcp();
}