blob: 2cab407901d5344b1420f3e0127bebc0713beef5 [file] [log] [blame]
/*
* Copyright 2004 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/base/port.h"
#include <string.h>
#include <cstdint>
#include <limits>
#include <list>
#include <memory>
#include <string>
#include <utility>
#include <vector>
#include "absl/types/optional.h"
#include "api/candidate.h"
#include "api/packet_socket_factory.h"
#include "api/transport/stun.h"
#include "api/units/time_delta.h"
#include "p2p/base/basic_packet_socket_factory.h"
#include "p2p/base/p2p_constants.h"
#include "p2p/base/port_allocator.h"
#include "p2p/base/port_interface.h"
#include "p2p/base/stun_port.h"
#include "p2p/base/stun_server.h"
#include "p2p/base/tcp_port.h"
#include "p2p/base/test_stun_server.h"
#include "p2p/base/test_turn_server.h"
#include "p2p/base/transport_description.h"
#include "p2p/base/turn_port.h"
#include "p2p/base/turn_server.h"
#include "p2p/client/relay_port_factory_interface.h"
#include "rtc_base/arraysize.h"
#include "rtc_base/async_packet_socket.h"
#include "rtc_base/async_socket.h"
#include "rtc_base/buffer.h"
#include "rtc_base/byte_buffer.h"
#include "rtc_base/checks.h"
#include "rtc_base/dscp.h"
#include "rtc_base/fake_clock.h"
#include "rtc_base/gunit.h"
#include "rtc_base/helpers.h"
#include "rtc_base/logging.h"
#include "rtc_base/nat_server.h"
#include "rtc_base/nat_socket_factory.h"
#include "rtc_base/nat_types.h"
#include "rtc_base/net_helper.h"
#include "rtc_base/network.h"
#include "rtc_base/network/sent_packet.h"
#include "rtc_base/network_constants.h"
#include "rtc_base/proxy_info.h"
#include "rtc_base/socket.h"
#include "rtc_base/socket_adapters.h"
#include "rtc_base/socket_address.h"
#include "rtc_base/third_party/sigslot/sigslot.h"
#include "rtc_base/thread.h"
#include "rtc_base/time_utils.h"
#include "rtc_base/virtual_socket_server.h"
#include "test/field_trial.h"
#include "test/gtest.h"
using rtc::AsyncPacketSocket;
using rtc::ByteBufferReader;
using rtc::ByteBufferWriter;
using rtc::NAT_ADDR_RESTRICTED;
using rtc::NAT_OPEN_CONE;
using rtc::NAT_PORT_RESTRICTED;
using rtc::NAT_SYMMETRIC;
using rtc::NATType;
using rtc::PacketSocketFactory;
using rtc::Socket;
using rtc::SocketAddress;
namespace cricket {
namespace {
constexpr int kDefaultTimeout = 3000;
constexpr int kShortTimeout = 1000;
constexpr int kMaxExpectedSimulatedRtt = 200;
const SocketAddress kLocalAddr1("192.168.1.2", 0);
const SocketAddress kLocalAddr2("192.168.1.3", 0);
const SocketAddress kNatAddr1("77.77.77.77", rtc::NAT_SERVER_UDP_PORT);
const SocketAddress kNatAddr2("88.88.88.88", rtc::NAT_SERVER_UDP_PORT);
const SocketAddress kStunAddr("99.99.99.1", STUN_SERVER_PORT);
const SocketAddress kTurnUdpIntAddr("99.99.99.4", STUN_SERVER_PORT);
const SocketAddress kTurnTcpIntAddr("99.99.99.4", 5010);
const SocketAddress kTurnUdpExtAddr("99.99.99.5", 0);
const RelayCredentials kRelayCredentials("test", "test");
// TODO(?): Update these when RFC5245 is completely supported.
// Magic value of 30 is from RFC3484, for IPv4 addresses.
const uint32_t kDefaultPrflxPriority = ICE_TYPE_PREFERENCE_PRFLX << 24 |
30 << 8 |
(256 - ICE_CANDIDATE_COMPONENT_DEFAULT);
constexpr int kTiebreaker1 = 11111;
constexpr int kTiebreaker2 = 22222;
const char* data = "ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890";
Candidate GetCandidate(Port* port) {
RTC_DCHECK_GE(port->Candidates().size(), 1);
return port->Candidates()[0];
}
SocketAddress GetAddress(Port* port) {
return GetCandidate(port).address();
}
std::unique_ptr<IceMessage> CopyStunMessage(const IceMessage& src) {
auto dst = std::make_unique<IceMessage>();
ByteBufferWriter buf;
src.Write(&buf);
ByteBufferReader read_buf(buf);
dst->Read(&read_buf);
return dst;
}
bool WriteStunMessage(const StunMessage& msg, ByteBufferWriter* buf) {
buf->Resize(0); // clear out any existing buffer contents
return msg.Write(buf);
}
} // namespace
// Stub port class for testing STUN generation and processing.
class TestPort : public Port {
public:
TestPort(rtc::Thread* thread,
const std::string& type,
rtc::PacketSocketFactory* factory,
rtc::Network* network,
uint16_t min_port,
uint16_t max_port,
const std::string& username_fragment,
const std::string& password)
: Port(thread,
type,
factory,
network,
min_port,
max_port,
username_fragment,
password) {}
~TestPort() {}
// Expose GetStunMessage so that we can test it.
using cricket::Port::GetStunMessage;
// The last StunMessage that was sent on this Port.
// TODO(?): Make these const; requires changes to SendXXXXResponse.
rtc::BufferT<uint8_t>* last_stun_buf() { return last_stun_buf_.get(); }
IceMessage* last_stun_msg() { return last_stun_msg_.get(); }
int last_stun_error_code() {
int code = 0;
if (last_stun_msg_) {
const StunErrorCodeAttribute* error_attr = last_stun_msg_->GetErrorCode();
if (error_attr) {
code = error_attr->code();
}
}
return code;
}
virtual void PrepareAddress() {
// Act as if the socket was bound to the best IP on the network, to the
// first port in the allowed range.
rtc::SocketAddress addr(Network()->GetBestIP(), min_port());
AddAddress(addr, addr, rtc::SocketAddress(), "udp", "", "", Type(),
ICE_TYPE_PREFERENCE_HOST, 0, "", true);
}
virtual bool SupportsProtocol(const std::string& protocol) const {
return true;
}
virtual ProtocolType GetProtocol() const { return PROTO_UDP; }
// Exposed for testing candidate building.
void AddCandidateAddress(const rtc::SocketAddress& addr) {
AddAddress(addr, addr, rtc::SocketAddress(), "udp", "", "", Type(),
type_preference_, 0, "", false);
}
void AddCandidateAddress(const rtc::SocketAddress& addr,
const rtc::SocketAddress& base_address,
const std::string& type,
int type_preference,
bool final) {
AddAddress(addr, base_address, rtc::SocketAddress(), "udp", "", "", type,
type_preference, 0, "", final);
}
virtual Connection* CreateConnection(const Candidate& remote_candidate,
CandidateOrigin origin) {
Connection* conn = new ProxyConnection(this, 0, remote_candidate);
AddOrReplaceConnection(conn);
// Set use-candidate attribute flag as this will add USE-CANDIDATE attribute
// in STUN binding requests.
conn->set_use_candidate_attr(true);
return conn;
}
virtual int SendTo(const void* data,
size_t size,
const rtc::SocketAddress& addr,
const rtc::PacketOptions& options,
bool payload) {
if (!payload) {
auto msg = std::make_unique<IceMessage>();
auto buf = std::make_unique<rtc::BufferT<uint8_t>>(
static_cast<const char*>(data), size);
ByteBufferReader read_buf(*buf);
if (!msg->Read(&read_buf)) {
return -1;
}
last_stun_buf_ = std::move(buf);
last_stun_msg_ = std::move(msg);
}
return static_cast<int>(size);
}
virtual int SetOption(rtc::Socket::Option opt, int value) { return 0; }
virtual int GetOption(rtc::Socket::Option opt, int* value) { return -1; }
virtual int GetError() { return 0; }
void Reset() {
last_stun_buf_.reset();
last_stun_msg_.reset();
}
void set_type_preference(int type_preference) {
type_preference_ = type_preference;
}
private:
void OnSentPacket(rtc::AsyncPacketSocket* socket,
const rtc::SentPacket& sent_packet) {
PortInterface::SignalSentPacket(sent_packet);
}
std::unique_ptr<rtc::BufferT<uint8_t>> last_stun_buf_;
std::unique_ptr<IceMessage> last_stun_msg_;
int type_preference_ = 0;
};
static void SendPingAndReceiveResponse(Connection* lconn,
TestPort* lport,
Connection* rconn,
TestPort* rport,
rtc::ScopedFakeClock* clock,
int64_t ms) {
lconn->Ping(rtc::TimeMillis());
ASSERT_TRUE_WAIT(lport->last_stun_msg(), kDefaultTimeout);
ASSERT_TRUE(lport->last_stun_buf());
rconn->OnReadPacket(lport->last_stun_buf()->data<char>(),
lport->last_stun_buf()->size(), /* packet_time_us */ -1);
clock->AdvanceTime(webrtc::TimeDelta::Millis(ms));
ASSERT_TRUE_WAIT(rport->last_stun_msg(), kDefaultTimeout);
ASSERT_TRUE(rport->last_stun_buf());
lconn->OnReadPacket(rport->last_stun_buf()->data<char>(),
rport->last_stun_buf()->size(), /* packet_time_us */ -1);
}
class TestChannel : public sigslot::has_slots<> {
public:
// Takes ownership of |p1| (but not |p2|).
explicit TestChannel(std::unique_ptr<Port> p1) : port_(std::move(p1)) {
port_->SignalPortComplete.connect(this, &TestChannel::OnPortComplete);
port_->SignalUnknownAddress.connect(this, &TestChannel::OnUnknownAddress);
port_->SignalDestroyed.connect(this, &TestChannel::OnSrcPortDestroyed);
}
int complete_count() { return complete_count_; }
Connection* conn() { return conn_; }
const SocketAddress& remote_address() { return remote_address_; }
const std::string remote_fragment() { return remote_frag_; }
void Start() { port_->PrepareAddress(); }
void CreateConnection(const Candidate& remote_candidate) {
conn_ = port_->CreateConnection(remote_candidate, Port::ORIGIN_MESSAGE);
IceMode remote_ice_mode =
(ice_mode_ == ICEMODE_FULL) ? ICEMODE_LITE : ICEMODE_FULL;
conn_->set_remote_ice_mode(remote_ice_mode);
conn_->set_use_candidate_attr(remote_ice_mode == ICEMODE_FULL);
conn_->SignalStateChange.connect(this,
&TestChannel::OnConnectionStateChange);
conn_->SignalDestroyed.connect(this, &TestChannel::OnDestroyed);
conn_->SignalReadyToSend.connect(this,
&TestChannel::OnConnectionReadyToSend);
connection_ready_to_send_ = false;
}
void OnConnectionStateChange(Connection* conn) {
if (conn->write_state() == Connection::STATE_WRITABLE) {
conn->set_use_candidate_attr(true);
nominated_ = true;
}
}
void AcceptConnection(const Candidate& remote_candidate) {
ASSERT_TRUE(remote_request_.get() != NULL);
Candidate c = remote_candidate;
c.set_address(remote_address_);
conn_ = port_->CreateConnection(c, Port::ORIGIN_MESSAGE);
conn_->SignalDestroyed.connect(this, &TestChannel::OnDestroyed);
conn_->SendStunBindingResponse(remote_request_.get());
remote_request_.reset();
}
void Ping() { Ping(0); }
void Ping(int64_t now) { conn_->Ping(now); }
void Stop() {
if (conn_) {
conn_->Destroy();
}
}
void OnPortComplete(Port* port) { complete_count_++; }
void SetIceMode(IceMode ice_mode) { ice_mode_ = ice_mode; }
int SendData(const char* data, size_t len) {
rtc::PacketOptions options;
return conn_->Send(data, len, options);
}
void OnUnknownAddress(PortInterface* port,
const SocketAddress& addr,
ProtocolType proto,
IceMessage* msg,
const std::string& rf,
bool /*port_muxed*/) {
ASSERT_EQ(port_.get(), port);
if (!remote_address_.IsNil()) {
ASSERT_EQ(remote_address_, addr);
}
const cricket::StunUInt32Attribute* priority_attr =
msg->GetUInt32(STUN_ATTR_PRIORITY);
const cricket::StunByteStringAttribute* mi_attr =
msg->GetByteString(STUN_ATTR_MESSAGE_INTEGRITY);
const cricket::StunUInt32Attribute* fingerprint_attr =
msg->GetUInt32(STUN_ATTR_FINGERPRINT);
EXPECT_TRUE(priority_attr != NULL);
EXPECT_TRUE(mi_attr != NULL);
EXPECT_TRUE(fingerprint_attr != NULL);
remote_address_ = addr;
remote_request_ = CopyStunMessage(*msg);
remote_frag_ = rf;
}
void OnDestroyed(Connection* conn) {
ASSERT_EQ(conn_, conn);
RTC_LOG(INFO) << "OnDestroy connection " << conn << " deleted";
conn_ = NULL;
// When the connection is destroyed, also clear these fields so future
// connections are possible.
remote_request_.reset();
remote_address_.Clear();
}
void OnSrcPortDestroyed(PortInterface* port) {
Port* destroyed_src = port_.release();
ASSERT_EQ(destroyed_src, port);
}
Port* port() { return port_.get(); }
bool nominated() const { return nominated_; }
void set_connection_ready_to_send(bool ready) {
connection_ready_to_send_ = ready;
}
bool connection_ready_to_send() const { return connection_ready_to_send_; }
private:
// ReadyToSend will only issue after a Connection recovers from ENOTCONN
void OnConnectionReadyToSend(Connection* conn) {
ASSERT_EQ(conn, conn_);
connection_ready_to_send_ = true;
}
IceMode ice_mode_ = ICEMODE_FULL;
std::unique_ptr<Port> port_;
int complete_count_ = 0;
Connection* conn_ = nullptr;
SocketAddress remote_address_;
std::unique_ptr<StunMessage> remote_request_;
std::string remote_frag_;
bool nominated_ = false;
bool connection_ready_to_send_ = false;
};
class PortTest : public ::testing::Test, public sigslot::has_slots<> {
public:
PortTest()
: ss_(new rtc::VirtualSocketServer()),
main_(ss_.get()),
socket_factory_(rtc::Thread::Current()),
nat_factory1_(ss_.get(), kNatAddr1, SocketAddress()),
nat_factory2_(ss_.get(), kNatAddr2, SocketAddress()),
nat_socket_factory1_(&nat_factory1_),
nat_socket_factory2_(&nat_factory2_),
stun_server_(TestStunServer::Create(&main_, kStunAddr)),
turn_server_(&main_, kTurnUdpIntAddr, kTurnUdpExtAddr),
username_(rtc::CreateRandomString(ICE_UFRAG_LENGTH)),
password_(rtc::CreateRandomString(ICE_PWD_LENGTH)),
role_conflict_(false),
ports_destroyed_(0) {}
protected:
std::string password() { return password_; }
void TestLocalToLocal() {
auto port1 = CreateUdpPort(kLocalAddr1);
port1->SetIceRole(cricket::ICEROLE_CONTROLLING);
auto port2 = CreateUdpPort(kLocalAddr2);
port2->SetIceRole(cricket::ICEROLE_CONTROLLED);
TestConnectivity("udp", std::move(port1), "udp", std::move(port2), true,
true, true, true);
}
void TestLocalToStun(NATType ntype) {
auto port1 = CreateUdpPort(kLocalAddr1);
port1->SetIceRole(cricket::ICEROLE_CONTROLLING);
nat_server2_ = CreateNatServer(kNatAddr2, ntype);
auto port2 = CreateStunPort(kLocalAddr2, &nat_socket_factory2_);
port2->SetIceRole(cricket::ICEROLE_CONTROLLED);
TestConnectivity("udp", std::move(port1), StunName(ntype), std::move(port2),
ntype == NAT_OPEN_CONE, true, ntype != NAT_SYMMETRIC,
true);
}
void TestLocalToRelay(ProtocolType proto) {
auto port1 = CreateUdpPort(kLocalAddr1);
port1->SetIceRole(cricket::ICEROLE_CONTROLLING);
auto port2 = CreateRelayPort(kLocalAddr2, proto, PROTO_UDP);
port2->SetIceRole(cricket::ICEROLE_CONTROLLED);
TestConnectivity("udp", std::move(port1), RelayName(proto),
std::move(port2), false, true, true, true);
}
void TestStunToLocal(NATType ntype) {
nat_server1_ = CreateNatServer(kNatAddr1, ntype);
auto port1 = CreateStunPort(kLocalAddr1, &nat_socket_factory1_);
port1->SetIceRole(cricket::ICEROLE_CONTROLLING);
auto port2 = CreateUdpPort(kLocalAddr2);
port2->SetIceRole(cricket::ICEROLE_CONTROLLED);
TestConnectivity(StunName(ntype), std::move(port1), "udp", std::move(port2),
true, ntype != NAT_SYMMETRIC, true, true);
}
void TestStunToStun(NATType ntype1, NATType ntype2) {
nat_server1_ = CreateNatServer(kNatAddr1, ntype1);
auto port1 = CreateStunPort(kLocalAddr1, &nat_socket_factory1_);
port1->SetIceRole(cricket::ICEROLE_CONTROLLING);
nat_server2_ = CreateNatServer(kNatAddr2, ntype2);
auto port2 = CreateStunPort(kLocalAddr2, &nat_socket_factory2_);
port2->SetIceRole(cricket::ICEROLE_CONTROLLED);
TestConnectivity(StunName(ntype1), std::move(port1), StunName(ntype2),
std::move(port2), ntype2 == NAT_OPEN_CONE,
ntype1 != NAT_SYMMETRIC, ntype2 != NAT_SYMMETRIC,
ntype1 + ntype2 < (NAT_PORT_RESTRICTED + NAT_SYMMETRIC));
}
void TestStunToRelay(NATType ntype, ProtocolType proto) {
nat_server1_ = CreateNatServer(kNatAddr1, ntype);
auto port1 = CreateStunPort(kLocalAddr1, &nat_socket_factory1_);
port1->SetIceRole(cricket::ICEROLE_CONTROLLING);
auto port2 = CreateRelayPort(kLocalAddr2, proto, PROTO_UDP);
port2->SetIceRole(cricket::ICEROLE_CONTROLLED);
TestConnectivity(StunName(ntype), std::move(port1), RelayName(proto),
std::move(port2), false, ntype != NAT_SYMMETRIC, true,
true);
}
void TestTcpToTcp() {
auto port1 = CreateTcpPort(kLocalAddr1);
port1->SetIceRole(cricket::ICEROLE_CONTROLLING);
auto port2 = CreateTcpPort(kLocalAddr2);
port2->SetIceRole(cricket::ICEROLE_CONTROLLED);
TestConnectivity("tcp", std::move(port1), "tcp", std::move(port2), true,
false, true, true);
}
void TestTcpToRelay(ProtocolType proto) {
auto port1 = CreateTcpPort(kLocalAddr1);
port1->SetIceRole(cricket::ICEROLE_CONTROLLING);
auto port2 = CreateRelayPort(kLocalAddr2, proto, PROTO_TCP);
port2->SetIceRole(cricket::ICEROLE_CONTROLLED);
TestConnectivity("tcp", std::move(port1), RelayName(proto),
std::move(port2), false, false, true, true);
}
void TestSslTcpToRelay(ProtocolType proto) {
auto port1 = CreateTcpPort(kLocalAddr1);
port1->SetIceRole(cricket::ICEROLE_CONTROLLING);
auto port2 = CreateRelayPort(kLocalAddr2, proto, PROTO_SSLTCP);
port2->SetIceRole(cricket::ICEROLE_CONTROLLED);
TestConnectivity("ssltcp", std::move(port1), RelayName(proto),
std::move(port2), false, false, true, true);
}
rtc::Network* MakeNetwork(const SocketAddress& addr) {
networks_.emplace_back("unittest", "unittest", addr.ipaddr(), 32);
networks_.back().AddIP(addr.ipaddr());
return &networks_.back();
}
// helpers for above functions
std::unique_ptr<UDPPort> CreateUdpPort(const SocketAddress& addr) {
return CreateUdpPort(addr, &socket_factory_);
}
std::unique_ptr<UDPPort> CreateUdpPort(const SocketAddress& addr,
PacketSocketFactory* socket_factory) {
return UDPPort::Create(&main_, socket_factory, MakeNetwork(addr), 0, 0,
username_, password_, std::string(), true,
absl::nullopt);
}
std::unique_ptr<TCPPort> CreateTcpPort(const SocketAddress& addr) {
return CreateTcpPort(addr, &socket_factory_);
}
std::unique_ptr<TCPPort> CreateTcpPort(const SocketAddress& addr,
PacketSocketFactory* socket_factory) {
return TCPPort::Create(&main_, socket_factory, MakeNetwork(addr), 0, 0,
username_, password_, true);
}
std::unique_ptr<StunPort> CreateStunPort(const SocketAddress& addr,
rtc::PacketSocketFactory* factory) {
ServerAddresses stun_servers;
stun_servers.insert(kStunAddr);
return StunPort::Create(&main_, factory, MakeNetwork(addr), 0, 0, username_,
password_, stun_servers, std::string(),
absl::nullopt);
}
std::unique_ptr<Port> CreateRelayPort(const SocketAddress& addr,
ProtocolType int_proto,
ProtocolType ext_proto) {
return CreateTurnPort(addr, &socket_factory_, int_proto, ext_proto);
}
std::unique_ptr<TurnPort> CreateTurnPort(const SocketAddress& addr,
PacketSocketFactory* socket_factory,
ProtocolType int_proto,
ProtocolType ext_proto) {
SocketAddress server_addr =
int_proto == PROTO_TCP ? kTurnTcpIntAddr : kTurnUdpIntAddr;
return CreateTurnPort(addr, socket_factory, int_proto, ext_proto,
server_addr);
}
std::unique_ptr<TurnPort> CreateTurnPort(
const SocketAddress& addr,
PacketSocketFactory* socket_factory,
ProtocolType int_proto,
ProtocolType ext_proto,
const rtc::SocketAddress& server_addr) {
return TurnPort::Create(&main_, socket_factory, MakeNetwork(addr), 0, 0,
username_, password_,
ProtocolAddress(server_addr, int_proto),
kRelayCredentials, 0, "", {}, {}, nullptr, nullptr);
}
std::unique_ptr<rtc::NATServer> CreateNatServer(const SocketAddress& addr,
rtc::NATType type) {
return std::make_unique<rtc::NATServer>(type, ss_.get(), addr, addr,
ss_.get(), addr);
}
static const char* StunName(NATType type) {
switch (type) {
case NAT_OPEN_CONE:
return "stun(open cone)";
case NAT_ADDR_RESTRICTED:
return "stun(addr restricted)";
case NAT_PORT_RESTRICTED:
return "stun(port restricted)";
case NAT_SYMMETRIC:
return "stun(symmetric)";
default:
return "stun(?)";
}
}
static const char* RelayName(ProtocolType proto) {
switch (proto) {
case PROTO_UDP:
return "turn(udp)";
case PROTO_TCP:
return "turn(tcp)";
case PROTO_SSLTCP:
return "turn(ssltcp)";
case PROTO_TLS:
return "turn(tls)";
default:
return "turn(?)";
}
}
void TestCrossFamilyPorts(int type);
void ExpectPortsCanConnect(bool can_connect, Port* p1, Port* p2);
// This does all the work and then deletes |port1| and |port2|.
void TestConnectivity(const char* name1,
std::unique_ptr<Port> port1,
const char* name2,
std::unique_ptr<Port> port2,
bool accept,
bool same_addr1,
bool same_addr2,
bool possible);
// This connects the provided channels which have already started. |ch1|
// should have its Connection created (either through CreateConnection() or
// TCP reconnecting mechanism before entering this function.
void ConnectStartedChannels(TestChannel* ch1, TestChannel* ch2) {
ASSERT_TRUE(ch1->conn());
EXPECT_TRUE_WAIT(ch1->conn()->connected(),
kDefaultTimeout); // for TCP connect
ch1->Ping();
WAIT(!ch2->remote_address().IsNil(), kShortTimeout);
// Send a ping from dst to src.
ch2->AcceptConnection(GetCandidate(ch1->port()));
ch2->Ping();
EXPECT_EQ_WAIT(Connection::STATE_WRITABLE, ch2->conn()->write_state(),
kDefaultTimeout);
}
// This connects and disconnects the provided channels in the same sequence as
// TestConnectivity with all options set to |true|. It does not delete either
// channel.
void StartConnectAndStopChannels(TestChannel* ch1, TestChannel* ch2) {
// Acquire addresses.
ch1->Start();
ch2->Start();
ch1->CreateConnection(GetCandidate(ch2->port()));
ConnectStartedChannels(ch1, ch2);
// Destroy the connections.
ch1->Stop();
ch2->Stop();
}
// This disconnects both end's Connection and make sure ch2 ready for new
// connection.
void DisconnectTcpTestChannels(TestChannel* ch1, TestChannel* ch2) {
TCPConnection* tcp_conn1 = static_cast<TCPConnection*>(ch1->conn());
TCPConnection* tcp_conn2 = static_cast<TCPConnection*>(ch2->conn());
ASSERT_TRUE(
ss_->CloseTcpConnections(tcp_conn1->socket()->GetLocalAddress(),
tcp_conn2->socket()->GetLocalAddress()));
// Wait for both OnClose are delivered.
EXPECT_TRUE_WAIT(!ch1->conn()->connected(), kDefaultTimeout);
EXPECT_TRUE_WAIT(!ch2->conn()->connected(), kDefaultTimeout);
// Ensure redundant SignalClose events on TcpConnection won't break tcp
// reconnection. Chromium will fire SignalClose for all outstanding IPC
// packets during reconnection.
tcp_conn1->socket()->SignalClose(tcp_conn1->socket(), 0);
tcp_conn2->socket()->SignalClose(tcp_conn2->socket(), 0);
// Speed up destroying ch2's connection such that the test is ready to
// accept a new connection from ch1 before ch1's connection destroys itself.
ch2->conn()->Destroy();
EXPECT_TRUE_WAIT(ch2->conn() == NULL, kDefaultTimeout);
}
void TestTcpReconnect(bool ping_after_disconnected,
bool send_after_disconnected) {
auto port1 = CreateTcpPort(kLocalAddr1);
port1->SetIceRole(cricket::ICEROLE_CONTROLLING);
auto port2 = CreateTcpPort(kLocalAddr2);
port2->SetIceRole(cricket::ICEROLE_CONTROLLED);
port1->set_component(cricket::ICE_CANDIDATE_COMPONENT_DEFAULT);
port2->set_component(cricket::ICE_CANDIDATE_COMPONENT_DEFAULT);
// Set up channels and ensure both ports will be deleted.
TestChannel ch1(std::move(port1));
TestChannel ch2(std::move(port2));
EXPECT_EQ(0, ch1.complete_count());
EXPECT_EQ(0, ch2.complete_count());
ch1.Start();
ch2.Start();
ASSERT_EQ_WAIT(1, ch1.complete_count(), kDefaultTimeout);
ASSERT_EQ_WAIT(1, ch2.complete_count(), kDefaultTimeout);
// Initial connecting the channel, create connection on channel1.
ch1.CreateConnection(GetCandidate(ch2.port()));
ConnectStartedChannels(&ch1, &ch2);
// Shorten the timeout period.
const int kTcpReconnectTimeout = kDefaultTimeout;
static_cast<TCPConnection*>(ch1.conn())
->set_reconnection_timeout(kTcpReconnectTimeout);
static_cast<TCPConnection*>(ch2.conn())
->set_reconnection_timeout(kTcpReconnectTimeout);
EXPECT_FALSE(ch1.connection_ready_to_send());
EXPECT_FALSE(ch2.connection_ready_to_send());
// Once connected, disconnect them.
DisconnectTcpTestChannels(&ch1, &ch2);
if (send_after_disconnected || ping_after_disconnected) {
if (send_after_disconnected) {
// First SendData after disconnect should fail but will trigger
// reconnect.
EXPECT_EQ(-1, ch1.SendData(data, static_cast<int>(strlen(data))));
}
if (ping_after_disconnected) {
// Ping should trigger reconnect.
ch1.Ping();
}
// Wait for channel's outgoing TCPConnection connected.
EXPECT_TRUE_WAIT(ch1.conn()->connected(), kDefaultTimeout);
// Verify that we could still connect channels.
ConnectStartedChannels(&ch1, &ch2);
EXPECT_TRUE_WAIT(ch1.connection_ready_to_send(), kTcpReconnectTimeout);
// Channel2 is the passive one so a new connection is created during
// reconnect. This new connection should never have issued ENOTCONN
// hence the connection_ready_to_send() should be false.
EXPECT_FALSE(ch2.connection_ready_to_send());
} else {
EXPECT_EQ(ch1.conn()->write_state(), Connection::STATE_WRITABLE);
// Since the reconnection never happens, the connections should have been
// destroyed after the timeout.
EXPECT_TRUE_WAIT(!ch1.conn(), kTcpReconnectTimeout + kDefaultTimeout);
EXPECT_TRUE(!ch2.conn());
}
// Tear down and ensure that goes smoothly.
ch1.Stop();
ch2.Stop();
EXPECT_TRUE_WAIT(ch1.conn() == NULL, kDefaultTimeout);
EXPECT_TRUE_WAIT(ch2.conn() == NULL, kDefaultTimeout);
}
std::unique_ptr<IceMessage> CreateStunMessage(int type) {
auto msg = std::make_unique<IceMessage>();
msg->SetType(type);
msg->SetTransactionID("TESTTESTTEST");
return msg;
}
std::unique_ptr<IceMessage> CreateStunMessageWithUsername(
int type,
const std::string& username) {
std::unique_ptr<IceMessage> msg = CreateStunMessage(type);
msg->AddAttribute(std::make_unique<StunByteStringAttribute>(
STUN_ATTR_USERNAME, username));
return msg;
}
std::unique_ptr<TestPort> CreateTestPort(const rtc::SocketAddress& addr,
const std::string& username,
const std::string& password) {
auto port =
std::make_unique<TestPort>(&main_, "test", &socket_factory_,
MakeNetwork(addr), 0, 0, username, password);
port->SignalRoleConflict.connect(this, &PortTest::OnRoleConflict);
return port;
}
std::unique_ptr<TestPort> CreateTestPort(const rtc::SocketAddress& addr,
const std::string& username,
const std::string& password,
cricket::IceRole role,
int tiebreaker) {
auto port = CreateTestPort(addr, username, password);
port->SetIceRole(role);
port->SetIceTiebreaker(tiebreaker);
return port;
}
// Overload to create a test port given an rtc::Network directly.
std::unique_ptr<TestPort> CreateTestPort(rtc::Network* network,
const std::string& username,
const std::string& password) {
auto port = std::make_unique<TestPort>(&main_, "test", &socket_factory_,
network, 0, 0, username, password);
port->SignalRoleConflict.connect(this, &PortTest::OnRoleConflict);
return port;
}
void OnRoleConflict(PortInterface* port) { role_conflict_ = true; }
bool role_conflict() const { return role_conflict_; }
void ConnectToSignalDestroyed(PortInterface* port) {
port->SignalDestroyed.connect(this, &PortTest::OnDestroyed);
}
void OnDestroyed(PortInterface* port) { ++ports_destroyed_; }
int ports_destroyed() const { return ports_destroyed_; }
rtc::BasicPacketSocketFactory* nat_socket_factory1() {
return &nat_socket_factory1_;
}
rtc::VirtualSocketServer* vss() { return ss_.get(); }
private:
// When a "create port" helper method is called with an IP, we create a
// Network with that IP and add it to this list. Using a list instead of a
// vector so that when it grows, pointers aren't invalidated.
std::list<rtc::Network> networks_;
std::unique_ptr<rtc::VirtualSocketServer> ss_;
rtc::AutoSocketServerThread main_;
rtc::BasicPacketSocketFactory socket_factory_;
std::unique_ptr<rtc::NATServer> nat_server1_;
std::unique_ptr<rtc::NATServer> nat_server2_;
rtc::NATSocketFactory nat_factory1_;
rtc::NATSocketFactory nat_factory2_;
rtc::BasicPacketSocketFactory nat_socket_factory1_;
rtc::BasicPacketSocketFactory nat_socket_factory2_;
std::unique_ptr<TestStunServer> stun_server_;
TestTurnServer turn_server_;
std::string username_;
std::string password_;
bool role_conflict_;
int ports_destroyed_;
};
void PortTest::TestConnectivity(const char* name1,
std::unique_ptr<Port> port1,
const char* name2,
std::unique_ptr<Port> port2,
bool accept,
bool same_addr1,
bool same_addr2,
bool possible) {
rtc::ScopedFakeClock clock;
RTC_LOG(LS_INFO) << "Test: " << name1 << " to " << name2 << ": ";
port1->set_component(cricket::ICE_CANDIDATE_COMPONENT_DEFAULT);
port2->set_component(cricket::ICE_CANDIDATE_COMPONENT_DEFAULT);
// Set up channels and ensure both ports will be deleted.
TestChannel ch1(std::move(port1));
TestChannel ch2(std::move(port2));
EXPECT_EQ(0, ch1.complete_count());
EXPECT_EQ(0, ch2.complete_count());
// Acquire addresses.
ch1.Start();
ch2.Start();
ASSERT_EQ_SIMULATED_WAIT(1, ch1.complete_count(), kDefaultTimeout, clock);
ASSERT_EQ_SIMULATED_WAIT(1, ch2.complete_count(), kDefaultTimeout, clock);
// Send a ping from src to dst. This may or may not make it.
ch1.CreateConnection(GetCandidate(ch2.port()));
ASSERT_TRUE(ch1.conn() != NULL);
EXPECT_TRUE_SIMULATED_WAIT(ch1.conn()->connected(), kDefaultTimeout,
clock); // for TCP connect
ch1.Ping();
SIMULATED_WAIT(!ch2.remote_address().IsNil(), kShortTimeout, clock);
if (accept) {
// We are able to send a ping from src to dst. This is the case when
// sending to UDP ports and cone NATs.
EXPECT_TRUE(ch1.remote_address().IsNil());
EXPECT_EQ(ch2.remote_fragment(), ch1.port()->username_fragment());
// Ensure the ping came from the same address used for src.
// This is the case unless the source NAT was symmetric.
if (same_addr1)
EXPECT_EQ(ch2.remote_address(), GetAddress(ch1.port()));
EXPECT_TRUE(same_addr2);
// Send a ping from dst to src.
ch2.AcceptConnection(GetCandidate(ch1.port()));
ASSERT_TRUE(ch2.conn() != NULL);
ch2.Ping();
EXPECT_EQ_SIMULATED_WAIT(Connection::STATE_WRITABLE,
ch2.conn()->write_state(), kDefaultTimeout, clock);
} else {
// We can't send a ping from src to dst, so flip it around. This will happen
// when the destination NAT is addr/port restricted or symmetric.
EXPECT_TRUE(ch1.remote_address().IsNil());
EXPECT_TRUE(ch2.remote_address().IsNil());
// Send a ping from dst to src. Again, this may or may not make it.
ch2.CreateConnection(GetCandidate(ch1.port()));
ASSERT_TRUE(ch2.conn() != NULL);
ch2.Ping();
SIMULATED_WAIT(ch2.conn()->write_state() == Connection::STATE_WRITABLE,
kShortTimeout, clock);
if (same_addr1 && same_addr2) {
// The new ping got back to the source.
EXPECT_TRUE(ch1.conn()->receiving());
EXPECT_EQ(Connection::STATE_WRITABLE, ch2.conn()->write_state());
// First connection may not be writable if the first ping did not get
// through. So we will have to do another.
if (ch1.conn()->write_state() == Connection::STATE_WRITE_INIT) {
ch1.Ping();
EXPECT_EQ_SIMULATED_WAIT(Connection::STATE_WRITABLE,
ch1.conn()->write_state(), kDefaultTimeout,
clock);
}
} else if (!same_addr1 && possible) {
// The new ping went to the candidate address, but that address was bad.
// This will happen when the source NAT is symmetric.
EXPECT_TRUE(ch1.remote_address().IsNil());
EXPECT_TRUE(ch2.remote_address().IsNil());
// However, since we have now sent a ping to the source IP, we should be
// able to get a ping from it. This gives us the real source address.
ch1.Ping();
EXPECT_TRUE_SIMULATED_WAIT(!ch2.remote_address().IsNil(), kDefaultTimeout,
clock);
EXPECT_FALSE(ch2.conn()->receiving());
EXPECT_TRUE(ch1.remote_address().IsNil());
// Pick up the actual address and establish the connection.
ch2.AcceptConnection(GetCandidate(ch1.port()));
ASSERT_TRUE(ch2.conn() != NULL);
ch2.Ping();
EXPECT_EQ_SIMULATED_WAIT(Connection::STATE_WRITABLE,
ch2.conn()->write_state(), kDefaultTimeout,
clock);
} else if (!same_addr2 && possible) {
// The new ping came in, but from an unexpected address. This will happen
// when the destination NAT is symmetric.
EXPECT_FALSE(ch1.remote_address().IsNil());
EXPECT_FALSE(ch1.conn()->receiving());
// Update our address and complete the connection.
ch1.AcceptConnection(GetCandidate(ch2.port()));
ch1.Ping();
EXPECT_EQ_SIMULATED_WAIT(Connection::STATE_WRITABLE,
ch1.conn()->write_state(), kDefaultTimeout,
clock);
} else { // (!possible)
// There should be s no way for the pings to reach each other. Check it.
EXPECT_TRUE(ch1.remote_address().IsNil());
EXPECT_TRUE(ch2.remote_address().IsNil());
ch1.Ping();
SIMULATED_WAIT(!ch2.remote_address().IsNil(), kShortTimeout, clock);
EXPECT_TRUE(ch1.remote_address().IsNil());
EXPECT_TRUE(ch2.remote_address().IsNil());
}
}
// Everything should be good, unless we know the situation is impossible.
ASSERT_TRUE(ch1.conn() != NULL);
ASSERT_TRUE(ch2.conn() != NULL);
if (possible) {
EXPECT_TRUE(ch1.conn()->receiving());
EXPECT_EQ(Connection::STATE_WRITABLE, ch1.conn()->write_state());
EXPECT_TRUE(ch2.conn()->receiving());
EXPECT_EQ(Connection::STATE_WRITABLE, ch2.conn()->write_state());
} else {
EXPECT_FALSE(ch1.conn()->receiving());
EXPECT_NE(Connection::STATE_WRITABLE, ch1.conn()->write_state());
EXPECT_FALSE(ch2.conn()->receiving());
EXPECT_NE(Connection::STATE_WRITABLE, ch2.conn()->write_state());
}
// Tear down and ensure that goes smoothly.
ch1.Stop();
ch2.Stop();
EXPECT_TRUE_SIMULATED_WAIT(ch1.conn() == NULL, kDefaultTimeout, clock);
EXPECT_TRUE_SIMULATED_WAIT(ch2.conn() == NULL, kDefaultTimeout, clock);
}
class FakePacketSocketFactory : public rtc::PacketSocketFactory {
public:
FakePacketSocketFactory()
: next_udp_socket_(NULL), next_server_tcp_socket_(NULL) {}
~FakePacketSocketFactory() override {}
AsyncPacketSocket* CreateUdpSocket(const SocketAddress& address,
uint16_t min_port,
uint16_t max_port) override {
EXPECT_TRUE(next_udp_socket_ != NULL);
AsyncPacketSocket* result = next_udp_socket_;
next_udp_socket_ = NULL;
return result;
}
AsyncPacketSocket* CreateServerTcpSocket(const SocketAddress& local_address,
uint16_t min_port,
uint16_t max_port,
int opts) override {
EXPECT_TRUE(next_server_tcp_socket_ != NULL);
AsyncPacketSocket* result = next_server_tcp_socket_;
next_server_tcp_socket_ = NULL;
return result;
}
AsyncPacketSocket* CreateClientTcpSocket(
const SocketAddress& local_address,
const SocketAddress& remote_address,
const rtc::ProxyInfo& proxy_info,
const std::string& user_agent,
const rtc::PacketSocketTcpOptions& opts) override {
EXPECT_TRUE(next_client_tcp_socket_.has_value());
AsyncPacketSocket* result = *next_client_tcp_socket_;
next_client_tcp_socket_ = nullptr;
return result;
}
void set_next_udp_socket(AsyncPacketSocket* next_udp_socket) {
next_udp_socket_ = next_udp_socket;
}
void set_next_server_tcp_socket(AsyncPacketSocket* next_server_tcp_socket) {
next_server_tcp_socket_ = next_server_tcp_socket;
}
void set_next_client_tcp_socket(AsyncPacketSocket* next_client_tcp_socket) {
next_client_tcp_socket_ = next_client_tcp_socket;
}
rtc::AsyncResolverInterface* CreateAsyncResolver() override { return NULL; }
private:
AsyncPacketSocket* next_udp_socket_;
AsyncPacketSocket* next_server_tcp_socket_;
absl::optional<AsyncPacketSocket*> next_client_tcp_socket_;
};
class FakeAsyncPacketSocket : public AsyncPacketSocket {
public:
// Returns current local address. Address may be set to NULL if the
// socket is not bound yet (GetState() returns STATE_BINDING).
virtual SocketAddress GetLocalAddress() const { return local_address_; }
// Returns remote address. Returns zeroes if this is not a client TCP socket.
virtual SocketAddress GetRemoteAddress() const { return remote_address_; }
// Send a packet.
virtual int Send(const void* pv,
size_t cb,
const rtc::PacketOptions& options) {
if (error_ == 0) {
return static_cast<int>(cb);
} else {
return -1;
}
}
virtual int SendTo(const void* pv,
size_t cb,
const SocketAddress& addr,
const rtc::PacketOptions& options) {
if (error_ == 0) {
return static_cast<int>(cb);
} else {
return -1;
}
}
virtual int Close() { return 0; }
virtual State GetState() const { return state_; }
virtual int GetOption(Socket::Option opt, int* value) { return 0; }
virtual int SetOption(Socket::Option opt, int value) { return 0; }
virtual int GetError() const { return 0; }
virtual void SetError(int error) { error_ = error; }
void set_state(State state) { state_ = state; }
SocketAddress local_address_;
SocketAddress remote_address_;
private:
int error_ = 0;
State state_;
};
// Local -> XXXX
TEST_F(PortTest, TestLocalToLocal) {
TestLocalToLocal();
}
TEST_F(PortTest, TestLocalToConeNat) {
TestLocalToStun(NAT_OPEN_CONE);
}
TEST_F(PortTest, TestLocalToARNat) {
TestLocalToStun(NAT_ADDR_RESTRICTED);
}
TEST_F(PortTest, TestLocalToPRNat) {
TestLocalToStun(NAT_PORT_RESTRICTED);
}
TEST_F(PortTest, TestLocalToSymNat) {
TestLocalToStun(NAT_SYMMETRIC);
}
// Flaky: https://code.google.com/p/webrtc/issues/detail?id=3316.
TEST_F(PortTest, DISABLED_TestLocalToTurn) {
TestLocalToRelay(PROTO_UDP);
}
// Cone NAT -> XXXX
TEST_F(PortTest, TestConeNatToLocal) {
TestStunToLocal(NAT_OPEN_CONE);
}
TEST_F(PortTest, TestConeNatToConeNat) {
TestStunToStun(NAT_OPEN_CONE, NAT_OPEN_CONE);
}
TEST_F(PortTest, TestConeNatToARNat) {
TestStunToStun(NAT_OPEN_CONE, NAT_ADDR_RESTRICTED);
}
TEST_F(PortTest, TestConeNatToPRNat) {
TestStunToStun(NAT_OPEN_CONE, NAT_PORT_RESTRICTED);
}
TEST_F(PortTest, TestConeNatToSymNat) {
TestStunToStun(NAT_OPEN_CONE, NAT_SYMMETRIC);
}
TEST_F(PortTest, TestConeNatToTurn) {
TestStunToRelay(NAT_OPEN_CONE, PROTO_UDP);
}
// Address-restricted NAT -> XXXX
TEST_F(PortTest, TestARNatToLocal) {
TestStunToLocal(NAT_ADDR_RESTRICTED);
}
TEST_F(PortTest, TestARNatToConeNat) {
TestStunToStun(NAT_ADDR_RESTRICTED, NAT_OPEN_CONE);
}
TEST_F(PortTest, TestARNatToARNat) {
TestStunToStun(NAT_ADDR_RESTRICTED, NAT_ADDR_RESTRICTED);
}
TEST_F(PortTest, TestARNatToPRNat) {
TestStunToStun(NAT_ADDR_RESTRICTED, NAT_PORT_RESTRICTED);
}
TEST_F(PortTest, TestARNatToSymNat) {
TestStunToStun(NAT_ADDR_RESTRICTED, NAT_SYMMETRIC);
}
TEST_F(PortTest, TestARNatToTurn) {
TestStunToRelay(NAT_ADDR_RESTRICTED, PROTO_UDP);
}
// Port-restricted NAT -> XXXX
TEST_F(PortTest, TestPRNatToLocal) {
TestStunToLocal(NAT_PORT_RESTRICTED);
}
TEST_F(PortTest, TestPRNatToConeNat) {
TestStunToStun(NAT_PORT_RESTRICTED, NAT_OPEN_CONE);
}
TEST_F(PortTest, TestPRNatToARNat) {
TestStunToStun(NAT_PORT_RESTRICTED, NAT_ADDR_RESTRICTED);
}
TEST_F(PortTest, TestPRNatToPRNat) {
TestStunToStun(NAT_PORT_RESTRICTED, NAT_PORT_RESTRICTED);
}
TEST_F(PortTest, TestPRNatToSymNat) {
// Will "fail"
TestStunToStun(NAT_PORT_RESTRICTED, NAT_SYMMETRIC);
}
TEST_F(PortTest, TestPRNatToTurn) {
TestStunToRelay(NAT_PORT_RESTRICTED, PROTO_UDP);
}
// Symmetric NAT -> XXXX
TEST_F(PortTest, TestSymNatToLocal) {
TestStunToLocal(NAT_SYMMETRIC);
}
TEST_F(PortTest, TestSymNatToConeNat) {
TestStunToStun(NAT_SYMMETRIC, NAT_OPEN_CONE);
}
TEST_F(PortTest, TestSymNatToARNat) {
TestStunToStun(NAT_SYMMETRIC, NAT_ADDR_RESTRICTED);
}
TEST_F(PortTest, TestSymNatToPRNat) {
// Will "fail"
TestStunToStun(NAT_SYMMETRIC, NAT_PORT_RESTRICTED);
}
TEST_F(PortTest, TestSymNatToSymNat) {
// Will "fail"
TestStunToStun(NAT_SYMMETRIC, NAT_SYMMETRIC);
}
TEST_F(PortTest, TestSymNatToTurn) {
TestStunToRelay(NAT_SYMMETRIC, PROTO_UDP);
}
// Outbound TCP -> XXXX
TEST_F(PortTest, TestTcpToTcp) {
TestTcpToTcp();
}
TEST_F(PortTest, TestTcpReconnectOnSendPacket) {
TestTcpReconnect(false /* ping */, true /* send */);
}
TEST_F(PortTest, TestTcpReconnectOnPing) {
TestTcpReconnect(true /* ping */, false /* send */);
}
TEST_F(PortTest, TestTcpReconnectTimeout) {
TestTcpReconnect(false /* ping */, false /* send */);
}
// Test when TcpConnection never connects, the OnClose() will be called to
// destroy the connection.
TEST_F(PortTest, TestTcpNeverConnect) {
auto port1 = CreateTcpPort(kLocalAddr1);
port1->SetIceRole(cricket::ICEROLE_CONTROLLING);
port1->set_component(cricket::ICE_CANDIDATE_COMPONENT_DEFAULT);
// Set up a channel and ensure the port will be deleted.
TestChannel ch1(std::move(port1));
EXPECT_EQ(0, ch1.complete_count());
ch1.Start();
ASSERT_EQ_WAIT(1, ch1.complete_count(), kDefaultTimeout);
std::unique_ptr<rtc::AsyncSocket> server(
vss()->CreateAsyncSocket(kLocalAddr2.family(), SOCK_STREAM));
// Bind but not listen.
EXPECT_EQ(0, server->Bind(kLocalAddr2));
Candidate c = GetCandidate(ch1.port());
c.set_address(server->GetLocalAddress());
ch1.CreateConnection(c);
EXPECT_TRUE(ch1.conn());
EXPECT_TRUE_WAIT(!ch1.conn(), kDefaultTimeout); // for TCP connect
}
/* TODO(?): Enable these once testrelayserver can accept external TCP.
TEST_F(PortTest, TestTcpToTcpRelay) {
TestTcpToRelay(PROTO_TCP);
}
TEST_F(PortTest, TestTcpToSslTcpRelay) {
TestTcpToRelay(PROTO_SSLTCP);
}
*/
// Outbound SSLTCP -> XXXX
/* TODO(?): Enable these once testrelayserver can accept external SSL.
TEST_F(PortTest, TestSslTcpToTcpRelay) {
TestSslTcpToRelay(PROTO_TCP);
}
TEST_F(PortTest, TestSslTcpToSslTcpRelay) {
TestSslTcpToRelay(PROTO_SSLTCP);
}
*/
// Test that a connection will be dead and deleted if
// i) it has never received anything for MIN_CONNECTION_LIFETIME milliseconds
// since it was created, or
// ii) it has not received anything for DEAD_CONNECTION_RECEIVE_TIMEOUT
// milliseconds since last receiving.
TEST_F(PortTest, TestConnectionDead) {
TestChannel ch1(CreateUdpPort(kLocalAddr1));
TestChannel ch2(CreateUdpPort(kLocalAddr2));
// Acquire address.
ch1.Start();
ch2.Start();
ASSERT_EQ_WAIT(1, ch1.complete_count(), kDefaultTimeout);
ASSERT_EQ_WAIT(1, ch2.complete_count(), kDefaultTimeout);
// Test case that the connection has never received anything.
int64_t before_created = rtc::TimeMillis();
ch1.CreateConnection(GetCandidate(ch2.port()));
int64_t after_created = rtc::TimeMillis();
Connection* conn = ch1.conn();
ASSERT_NE(conn, nullptr);
// It is not dead if it is after MIN_CONNECTION_LIFETIME but not pruned.
conn->UpdateState(after_created + MIN_CONNECTION_LIFETIME + 1);
rtc::Thread::Current()->ProcessMessages(0);
EXPECT_TRUE(ch1.conn() != nullptr);
// It is not dead if it is before MIN_CONNECTION_LIFETIME and pruned.
conn->UpdateState(before_created + MIN_CONNECTION_LIFETIME - 1);
conn->Prune();
rtc::Thread::Current()->ProcessMessages(0);
EXPECT_TRUE(ch1.conn() != nullptr);
// It will be dead after MIN_CONNECTION_LIFETIME and pruned.
conn->UpdateState(after_created + MIN_CONNECTION_LIFETIME + 1);
EXPECT_TRUE_WAIT(ch1.conn() == nullptr, kDefaultTimeout);
// Test case that the connection has received something.
// Create a connection again and receive a ping.
ch1.CreateConnection(GetCandidate(ch2.port()));
conn = ch1.conn();
ASSERT_NE(conn, nullptr);
int64_t before_last_receiving = rtc::TimeMillis();
conn->ReceivedPing();
int64_t after_last_receiving = rtc::TimeMillis();
// The connection will be dead after DEAD_CONNECTION_RECEIVE_TIMEOUT
conn->UpdateState(before_last_receiving + DEAD_CONNECTION_RECEIVE_TIMEOUT -
1);
rtc::Thread::Current()->ProcessMessages(100);
EXPECT_TRUE(ch1.conn() != nullptr);
conn->UpdateState(after_last_receiving + DEAD_CONNECTION_RECEIVE_TIMEOUT + 1);
EXPECT_TRUE_WAIT(ch1.conn() == nullptr, kDefaultTimeout);
}
TEST_F(PortTest, TestConnectionDeadWithDeadConnectionTimeout) {
TestChannel ch1(CreateUdpPort(kLocalAddr1));
TestChannel ch2(CreateUdpPort(kLocalAddr2));
// Acquire address.
ch1.Start();
ch2.Start();
ASSERT_EQ_WAIT(1, ch1.complete_count(), kDefaultTimeout);
ASSERT_EQ_WAIT(1, ch2.complete_count(), kDefaultTimeout);
// Note: set field trials manually since they are parsed by
// P2PTransportChannel but P2PTransportChannel is not used in this test.
IceFieldTrials field_trials;
field_trials.dead_connection_timeout_ms = 90000;
// Create a connection again and receive a ping.
ch1.CreateConnection(GetCandidate(ch2.port()));
auto conn = ch1.conn();
conn->SetIceFieldTrials(&field_trials);
ASSERT_NE(conn, nullptr);
int64_t before_last_receiving = rtc::TimeMillis();
conn->ReceivedPing();
int64_t after_last_receiving = rtc::TimeMillis();
// The connection will be dead after 90s
conn->UpdateState(before_last_receiving + 90000 - 1);
rtc::Thread::Current()->ProcessMessages(100);
EXPECT_TRUE(ch1.conn() != nullptr);
conn->UpdateState(after_last_receiving + 90000 + 1);
EXPECT_TRUE_WAIT(ch1.conn() == nullptr, kDefaultTimeout);
}
TEST_F(PortTest, TestConnectionDeadOutstandingPing) {
auto port1 = CreateUdpPort(kLocalAddr1);
port1->SetIceRole(cricket::ICEROLE_CONTROLLING);
port1->SetIceTiebreaker(kTiebreaker1);
auto port2 = CreateUdpPort(kLocalAddr2);
port2->SetIceRole(cricket::ICEROLE_CONTROLLED);
port2->SetIceTiebreaker(kTiebreaker2);
TestChannel ch1(std::move(port1));
TestChannel ch2(std::move(port2));
// Acquire address.
ch1.Start();
ch2.Start();
ASSERT_EQ_WAIT(1, ch1.complete_count(), kDefaultTimeout);
ASSERT_EQ_WAIT(1, ch2.complete_count(), kDefaultTimeout);
// Note: set field trials manually since they are parsed by
// P2PTransportChannel but P2PTransportChannel is not used in this test.
IceFieldTrials field_trials;
field_trials.dead_connection_timeout_ms = 360000;
// Create a connection again and receive a ping and then send
// a ping and keep it outstanding.
ch1.CreateConnection(GetCandidate(ch2.port()));
auto conn = ch1.conn();
conn->SetIceFieldTrials(&field_trials);
ASSERT_NE(conn, nullptr);
conn->ReceivedPing();
int64_t send_ping_timestamp = rtc::TimeMillis();
conn->Ping(send_ping_timestamp);
// The connection will be dead 30s after the ping was sent.
conn->UpdateState(send_ping_timestamp + DEAD_CONNECTION_RECEIVE_TIMEOUT - 1);
rtc::Thread::Current()->ProcessMessages(100);
EXPECT_TRUE(ch1.conn() != nullptr);
conn->UpdateState(send_ping_timestamp + DEAD_CONNECTION_RECEIVE_TIMEOUT + 1);
EXPECT_TRUE_WAIT(ch1.conn() == nullptr, kDefaultTimeout);
}
// This test case verifies standard ICE features in STUN messages. Currently it
// verifies Message Integrity attribute in STUN messages and username in STUN
// binding request will have colon (":") between remote and local username.
TEST_F(PortTest, TestLocalToLocalStandard) {
auto port1 = CreateUdpPort(kLocalAddr1);
port1->SetIceRole(cricket::ICEROLE_CONTROLLING);
port1->SetIceTiebreaker(kTiebreaker1);
auto port2 = CreateUdpPort(kLocalAddr2);
port2->SetIceRole(cricket::ICEROLE_CONTROLLED);
port2->SetIceTiebreaker(kTiebreaker2);
// Same parameters as TestLocalToLocal above.
TestConnectivity("udp", std::move(port1), "udp", std::move(port2), true, true,
true, true);
}
// This test is trying to validate a successful and failure scenario in a
// loopback test when protocol is RFC5245. For success IceTiebreaker, username
// should remain equal to the request generated by the port and role of port
// must be in controlling.
TEST_F(PortTest, TestLoopbackCall) {
auto lport = CreateTestPort(kLocalAddr1, "lfrag", "lpass");
lport->SetIceRole(cricket::ICEROLE_CONTROLLING);
lport->SetIceTiebreaker(kTiebreaker1);
lport->PrepareAddress();
ASSERT_FALSE(lport->Candidates().empty());
Connection* conn =
lport->CreateConnection(lport->Candidates()[0], Port::ORIGIN_MESSAGE);
conn->Ping(0);
ASSERT_TRUE_WAIT(lport->last_stun_msg() != NULL, kDefaultTimeout);
IceMessage* msg = lport->last_stun_msg();
EXPECT_EQ(STUN_BINDING_REQUEST, msg->type());
conn->OnReadPacket(lport->last_stun_buf()->data<char>(),
lport->last_stun_buf()->size(), /* packet_time_us */ -1);
ASSERT_TRUE_WAIT(lport->last_stun_msg() != NULL, kDefaultTimeout);
msg = lport->last_stun_msg();
EXPECT_EQ(STUN_BINDING_RESPONSE, msg->type());
// If the tiebreaker value is different from port, we expect a error
// response.
lport->Reset();
lport->AddCandidateAddress(kLocalAddr2);
// Creating a different connection as |conn| is receiving.
Connection* conn1 =
lport->CreateConnection(lport->Candidates()[1], Port::ORIGIN_MESSAGE);
conn1->Ping(0);
ASSERT_TRUE_WAIT(lport->last_stun_msg() != NULL, kDefaultTimeout);
msg = lport->last_stun_msg();
EXPECT_EQ(STUN_BINDING_REQUEST, msg->type());
std::unique_ptr<IceMessage> modified_req(
CreateStunMessage(STUN_BINDING_REQUEST));
const StunByteStringAttribute* username_attr =
msg->GetByteString(STUN_ATTR_USERNAME);
modified_req->AddAttribute(std::make_unique<StunByteStringAttribute>(
STUN_ATTR_USERNAME, username_attr->GetString()));
// To make sure we receive error response, adding tiebreaker less than
// what's present in request.
modified_req->AddAttribute(std::make_unique<StunUInt64Attribute>(
STUN_ATTR_ICE_CONTROLLING, kTiebreaker1 - 1));
modified_req->AddMessageIntegrity("lpass");
modified_req->AddFingerprint();
lport->Reset();
auto buf = std::make_unique<ByteBufferWriter>();
WriteStunMessage(*modified_req, buf.get());
conn1->OnReadPacket(buf->Data(), buf->Length(), /* packet_time_us */ -1);
ASSERT_TRUE_WAIT(lport->last_stun_msg() != NULL, kDefaultTimeout);
msg = lport->last_stun_msg();
EXPECT_EQ(STUN_BINDING_ERROR_RESPONSE, msg->type());
}
// This test verifies role conflict signal is received when there is
// conflict in the role. In this case both ports are in controlling and
// |rport| has higher tiebreaker value than |lport|. Since |lport| has lower
// value of tiebreaker, when it receives ping request from |rport| it will
// send role conflict signal.
TEST_F(PortTest, TestIceRoleConflict) {
auto lport = CreateTestPort(kLocalAddr1, "lfrag", "lpass");
lport->SetIceRole(cricket::ICEROLE_CONTROLLING);
lport->SetIceTiebreaker(kTiebreaker1);
auto rport = CreateTestPort(kLocalAddr2, "rfrag", "rpass");
rport->SetIceRole(cricket::ICEROLE_CONTROLLING);
rport->SetIceTiebreaker(kTiebreaker2);
lport->PrepareAddress();
rport->PrepareAddress();
ASSERT_FALSE(lport->Candidates().empty());
ASSERT_FALSE(rport->Candidates().empty());
Connection* lconn =
lport->CreateConnection(rport->Candidates()[0], Port::ORIGIN_MESSAGE);
Connection* rconn =
rport->CreateConnection(lport->Candidates()[0], Port::ORIGIN_MESSAGE);
rconn->Ping(0);
ASSERT_TRUE_WAIT(rport->last_stun_msg() != NULL, kDefaultTimeout);
IceMessage* msg = rport->last_stun_msg();
EXPECT_EQ(STUN_BINDING_REQUEST, msg->type());
// Send rport binding request to lport.
lconn->OnReadPacket(rport->last_stun_buf()->data<char>(),
rport->last_stun_buf()->size(), /* packet_time_us */ -1);
ASSERT_TRUE_WAIT(lport->last_stun_msg() != NULL, kDefaultTimeout);
EXPECT_EQ(STUN_BINDING_RESPONSE, lport->last_stun_msg()->type());
EXPECT_TRUE(role_conflict());
}
TEST_F(PortTest, TestTcpNoDelay) {
auto port1 = CreateTcpPort(kLocalAddr1);
port1->SetIceRole(cricket::ICEROLE_CONTROLLING);
int option_value = -1;
int success = port1->GetOption(rtc::Socket::OPT_NODELAY, &option_value);
ASSERT_EQ(0, success); // GetOption() should complete successfully w/ 0
ASSERT_EQ(1, option_value);
}
TEST_F(PortTest, TestDelayedBindingUdp) {
FakeAsyncPacketSocket* socket = new FakeAsyncPacketSocket();
FakePacketSocketFactory socket_factory;
socket_factory.set_next_udp_socket(socket);
auto port = CreateUdpPort(kLocalAddr1, &socket_factory);
socket->set_state(AsyncPacketSocket::STATE_BINDING);
port->PrepareAddress();
EXPECT_EQ(0U, port->Candidates().size());
socket->SignalAddressReady(socket, kLocalAddr2);
EXPECT_EQ(1U, port->Candidates().size());
}
TEST_F(PortTest, TestDelayedBindingTcp) {
FakeAsyncPacketSocket* socket = new FakeAsyncPacketSocket();
FakePacketSocketFactory socket_factory;
socket_factory.set_next_server_tcp_socket(socket);
auto port = CreateTcpPort(kLocalAddr1, &socket_factory);
socket->set_state(AsyncPacketSocket::STATE_BINDING);
port->PrepareAddress();
EXPECT_EQ(0U, port->Candidates().size());
socket->SignalAddressReady(socket, kLocalAddr2);
EXPECT_EQ(1U, port->Candidates().size());
}
TEST_F(PortTest, TestDisableInterfaceOfTcpPort) {
FakeAsyncPacketSocket* lsocket = new FakeAsyncPacketSocket();
FakeAsyncPacketSocket* rsocket = new FakeAsyncPacketSocket();
FakePacketSocketFactory socket_factory;
socket_factory.set_next_server_tcp_socket(lsocket);
auto lport = CreateTcpPort(kLocalAddr1, &socket_factory);
socket_factory.set_next_server_tcp_socket(rsocket);
auto rport = CreateTcpPort(kLocalAddr2, &socket_factory);
lsocket->set_state(AsyncPacketSocket::STATE_BINDING);
lsocket->SignalAddressReady(lsocket, kLocalAddr1);
rsocket->set_state(AsyncPacketSocket::STATE_BINDING);
rsocket->SignalAddressReady(rsocket, kLocalAddr2);
lport->SetIceRole(cricket::ICEROLE_CONTROLLING);
lport->SetIceTiebreaker(kTiebreaker1);
rport->SetIceRole(cricket::ICEROLE_CONTROLLED);
rport->SetIceTiebreaker(kTiebreaker2);
lport->PrepareAddress();
rport->PrepareAddress();
ASSERT_FALSE(rport->Candidates().empty());
// A client socket.
FakeAsyncPacketSocket* socket = new FakeAsyncPacketSocket();
socket->local_address_ = kLocalAddr1;
socket->remote_address_ = kLocalAddr2;
socket_factory.set_next_client_tcp_socket(socket);
Connection* lconn =
lport->CreateConnection(rport->Candidates()[0], Port::ORIGIN_MESSAGE);
ASSERT_NE(lconn, nullptr);
socket->SignalConnect(socket);
lconn->Ping(0);
// Now disconnect the client socket...
socket->SignalClose(socket, 1);
// And prevent new sockets from being created.
socket_factory.set_next_client_tcp_socket(nullptr);
// Test that Ping() does not cause SEGV.
lconn->Ping(0);
}
void PortTest::TestCrossFamilyPorts(int type) {
FakePacketSocketFactory factory;
std::unique_ptr<Port> ports[4];
SocketAddress addresses[4] = {
SocketAddress("192.168.1.3", 0), SocketAddress("192.168.1.4", 0),
SocketAddress("2001:db8::1", 0), SocketAddress("2001:db8::2", 0)};
for (int i = 0; i < 4; i++) {
FakeAsyncPacketSocket* socket = new FakeAsyncPacketSocket();
if (type == SOCK_DGRAM) {
factory.set_next_udp_socket(socket);
ports[i] = CreateUdpPort(addresses[i], &factory);
} else if (type == SOCK_STREAM) {
factory.set_next_server_tcp_socket(socket);
ports[i] = CreateTcpPort(addresses[i], &factory);
}
socket->set_state(AsyncPacketSocket::STATE_BINDING);
socket->SignalAddressReady(socket, addresses[i]);
ports[i]->PrepareAddress();
}
// IPv4 Port, connects to IPv6 candidate and then to IPv4 candidate.
if (type == SOCK_STREAM) {
FakeAsyncPacketSocket* clientsocket = new FakeAsyncPacketSocket();
factory.set_next_client_tcp_socket(clientsocket);
}
Connection* c = ports[0]->CreateConnection(GetCandidate(ports[2].get()),
Port::ORIGIN_MESSAGE);
EXPECT_TRUE(NULL == c);
EXPECT_EQ(0U, ports[0]->connections().size());
c = ports[0]->CreateConnection(GetCandidate(ports[1].get()),
Port::ORIGIN_MESSAGE);
EXPECT_FALSE(NULL == c);
EXPECT_EQ(1U, ports[0]->connections().size());
// IPv6 Port, connects to IPv4 candidate and to IPv6 candidate.
if (type == SOCK_STREAM) {
FakeAsyncPacketSocket* clientsocket = new FakeAsyncPacketSocket();
factory.set_next_client_tcp_socket(clientsocket);
}
c = ports[2]->CreateConnection(GetCandidate(ports[0].get()),
Port::ORIGIN_MESSAGE);
EXPECT_TRUE(NULL == c);
EXPECT_EQ(0U, ports[2]->connections().size());
c = ports[2]->CreateConnection(GetCandidate(ports[3].get()),
Port::ORIGIN_MESSAGE);
EXPECT_FALSE(NULL == c);
EXPECT_EQ(1U, ports[2]->connections().size());
}
TEST_F(PortTest, TestSkipCrossFamilyTcp) {
TestCrossFamilyPorts(SOCK_STREAM);
}
TEST_F(PortTest, TestSkipCrossFamilyUdp) {
TestCrossFamilyPorts(SOCK_DGRAM);
}
void PortTest::ExpectPortsCanConnect(bool can_connect, Port* p1, Port* p2) {
Connection* c = p1->CreateConnection(GetCandidate(p2), Port::ORIGIN_MESSAGE);
if (can_connect) {
EXPECT_FALSE(NULL == c);
EXPECT_EQ(1U, p1->connections().size());
} else {
EXPECT_TRUE(NULL == c);
EXPECT_EQ(0U, p1->connections().size());
}
}
TEST_F(PortTest, TestUdpV6CrossTypePorts) {
FakePacketSocketFactory factory;
std::unique_ptr<Port> ports[4];
SocketAddress addresses[4] = {
SocketAddress("2001:db8::1", 0), SocketAddress("fe80::1", 0),
SocketAddress("fe80::2", 0), SocketAddress("::1", 0)};
for (int i = 0; i < 4; i++) {
FakeAsyncPacketSocket* socket = new FakeAsyncPacketSocket();
factory.set_next_udp_socket(socket);
ports[i] = CreateUdpPort(addresses[i], &factory);
socket->set_state(AsyncPacketSocket::STATE_BINDING);
socket->SignalAddressReady(socket, addresses[i]);
ports[i]->PrepareAddress();
}
Port* standard = ports[0].get();
Port* link_local1 = ports[1].get();
Port* link_local2 = ports[2].get();
Port* localhost = ports[3].get();
ExpectPortsCanConnect(false, link_local1, standard);
ExpectPortsCanConnect(false, standard, link_local1);
ExpectPortsCanConnect(false, link_local1, localhost);
ExpectPortsCanConnect(false, localhost, link_local1);
ExpectPortsCanConnect(true, link_local1, link_local2);
ExpectPortsCanConnect(true, localhost, standard);
ExpectPortsCanConnect(true, standard, localhost);
}
// This test verifies DSCP value set through SetOption interface can be
// get through DefaultDscpValue.
TEST_F(PortTest, TestDefaultDscpValue) {
int dscp;
auto udpport = CreateUdpPort(kLocalAddr1);
EXPECT_EQ(0, udpport->SetOption(rtc::Socket::OPT_DSCP, rtc::DSCP_CS6));
EXPECT_EQ(0, udpport->GetOption(rtc::Socket::OPT_DSCP, &dscp));
auto tcpport = CreateTcpPort(kLocalAddr1);
EXPECT_EQ(0, tcpport->SetOption(rtc::Socket::OPT_DSCP, rtc::DSCP_AF31));
EXPECT_EQ(0, tcpport->GetOption(rtc::Socket::OPT_DSCP, &dscp));
EXPECT_EQ(rtc::DSCP_AF31, dscp);
auto stunport = CreateStunPort(kLocalAddr1, nat_socket_factory1());
EXPECT_EQ(0, stunport->SetOption(rtc::Socket::OPT_DSCP, rtc::DSCP_AF41));
EXPECT_EQ(0, stunport->GetOption(rtc::Socket::OPT_DSCP, &dscp));
EXPECT_EQ(rtc::DSCP_AF41, dscp);
auto turnport1 =
CreateTurnPort(kLocalAddr1, nat_socket_factory1(), PROTO_UDP, PROTO_UDP);
// Socket is created in PrepareAddress.
turnport1->PrepareAddress();
EXPECT_EQ(0, turnport1->SetOption(rtc::Socket::OPT_DSCP, rtc::DSCP_CS7));
EXPECT_EQ(0, turnport1->GetOption(rtc::Socket::OPT_DSCP, &dscp));
EXPECT_EQ(rtc::DSCP_CS7, dscp);
// This will verify correct value returned without the socket.
auto turnport2 =
CreateTurnPort(kLocalAddr1, nat_socket_factory1(), PROTO_UDP, PROTO_UDP);
EXPECT_EQ(0, turnport2->SetOption(rtc::Socket::OPT_DSCP, rtc::DSCP_CS6));
EXPECT_EQ(0, turnport2->GetOption(rtc::Socket::OPT_DSCP, &dscp));
EXPECT_EQ(rtc::DSCP_CS6, dscp);
}
// Test sending STUN messages.
TEST_F(PortTest, TestSendStunMessage) {
auto lport = CreateTestPort(kLocalAddr1, "lfrag", "lpass");
auto rport = CreateTestPort(kLocalAddr2, "rfrag", "rpass");
lport->SetIceRole(cricket::ICEROLE_CONTROLLING);
lport->SetIceTiebreaker(kTiebreaker1);
rport->SetIceRole(cricket::ICEROLE_CONTROLLED);
rport->SetIceTiebreaker(kTiebreaker2);
// Send a fake ping from lport to rport.
lport->PrepareAddress();
rport->PrepareAddress();
ASSERT_FALSE(rport->Candidates().empty());
Connection* lconn =
lport->CreateConnection(rport->Candidates()[0], Port::ORIGIN_MESSAGE);
Connection* rconn =
rport->CreateConnection(lport->Candidates()[0], Port::ORIGIN_MESSAGE);
lconn->Ping(0);
// Check that it's a proper BINDING-REQUEST.
ASSERT_TRUE_WAIT(lport->last_stun_msg() != NULL, kDefaultTimeout);
IceMessage* msg = lport->last_stun_msg();
EXPECT_EQ(STUN_BINDING_REQUEST, msg->type());
EXPECT_FALSE(msg->IsLegacy());
const StunByteStringAttribute* username_attr =
msg->GetByteString(STUN_ATTR_USERNAME);
ASSERT_TRUE(username_attr != NULL);
const StunUInt32Attribute* priority_attr = msg->GetUInt32(STUN_ATTR_PRIORITY);
ASSERT_TRUE(priority_attr != NULL);
EXPECT_EQ(kDefaultPrflxPriority, priority_attr->value());
EXPECT_EQ("rfrag:lfrag", username_attr->GetString());
EXPECT_TRUE(msg->GetByteString(STUN_ATTR_MESSAGE_INTEGRITY) != NULL);
EXPECT_TRUE(StunMessage::ValidateMessageIntegrity(
lport->last_stun_buf()->data<char>(), lport->last_stun_buf()->size(),
"rpass"));
const StunUInt64Attribute* ice_controlling_attr =
msg->GetUInt64(STUN_ATTR_ICE_CONTROLLING);
ASSERT_TRUE(ice_controlling_attr != NULL);
EXPECT_EQ(lport->IceTiebreaker(), ice_controlling_attr->value());
EXPECT_TRUE(msg->GetByteString(STUN_ATTR_ICE_CONTROLLED) == NULL);
EXPECT_TRUE(msg->GetByteString(STUN_ATTR_USE_CANDIDATE) != NULL);
EXPECT_TRUE(msg->GetUInt32(STUN_ATTR_FINGERPRINT) != NULL);
EXPECT_TRUE(StunMessage::ValidateFingerprint(
lport->last_stun_buf()->data<char>(), lport->last_stun_buf()->size()));
// Request should not include ping count.
ASSERT_TRUE(msg->GetUInt32(STUN_ATTR_RETRANSMIT_COUNT) == NULL);
// Save a copy of the BINDING-REQUEST for use below.
std::unique_ptr<IceMessage> request = CopyStunMessage(*msg);
// Receive the BINDING-REQUEST and respond with BINDING-RESPONSE.
rconn->OnReadPacket(lport->last_stun_buf()->data<char>(),
lport->last_stun_buf()->size(), /* packet_time_us */ -1);
msg = rport->last_stun_msg();
ASSERT_TRUE(msg != NULL);
EXPECT_EQ(STUN_BINDING_RESPONSE, msg->type());
// Received a BINDING-RESPONSE.
lconn->OnReadPacket(rport->last_stun_buf()->data<char>(),
rport->last_stun_buf()->size(), /* packet_time_us */ -1);
// Verify the STUN Stats.
EXPECT_EQ(1U, lconn->stats().sent_ping_requests_total);
EXPECT_EQ(1U, lconn->stats().sent_ping_requests_before_first_response);
EXPECT_EQ(1U, lconn->stats().recv_ping_responses);
EXPECT_EQ(1U, rconn->stats().recv_ping_requests);
EXPECT_EQ(1U, rconn->stats().sent_ping_responses);
EXPECT_FALSE(msg->IsLegacy());
const StunAddressAttribute* addr_attr =
msg->GetAddress(STUN_ATTR_XOR_MAPPED_ADDRESS);
ASSERT_TRUE(addr_attr != NULL);
EXPECT_EQ(lport->Candidates()[0].address(), addr_attr->GetAddress());
EXPECT_TRUE(msg->GetByteString(STUN_ATTR_MESSAGE_INTEGRITY) != NULL);
EXPECT_TRUE(StunMessage::ValidateMessageIntegrity(
rport->last_stun_buf()->data<char>(), rport->last_stun_buf()->size(),
"rpass"));
EXPECT_TRUE(msg->GetUInt32(STUN_ATTR_FINGERPRINT) != NULL);
EXPECT_TRUE(StunMessage::ValidateFingerprint(
lport->last_stun_buf()->data<char>(), lport->last_stun_buf()->size()));
// No USERNAME or PRIORITY in ICE responses.
EXPECT_TRUE(msg->GetByteString(STUN_ATTR_USERNAME) == NULL);
EXPECT_TRUE(msg->GetByteString(STUN_ATTR_PRIORITY) == NULL);
EXPECT_TRUE(msg->GetByteString(STUN_ATTR_MAPPED_ADDRESS) == NULL);
EXPECT_TRUE(msg->GetByteString(STUN_ATTR_ICE_CONTROLLING) == NULL);
EXPECT_TRUE(msg->GetByteString(STUN_ATTR_ICE_CONTROLLED) == NULL);
EXPECT_TRUE(msg->GetByteString(STUN_ATTR_USE_CANDIDATE) == NULL);
// Response should not include ping count.
ASSERT_TRUE(msg->GetUInt32(STUN_ATTR_RETRANSMIT_COUNT) == NULL);
// Respond with a BINDING-ERROR-RESPONSE. This wouldn't happen in real life,
// but we can do it here.
rport->SendBindingErrorResponse(
request.get(), lport->Candidates()[0].address(), STUN_ERROR_SERVER_ERROR,
STUN_ERROR_REASON_SERVER_ERROR);
msg = rport->last_stun_msg();
ASSERT_TRUE(msg != NULL);
EXPECT_EQ(STUN_BINDING_ERROR_RESPONSE, msg->type());
EXPECT_FALSE(msg->IsLegacy());
const StunErrorCodeAttribute* error_attr = msg->GetErrorCode();
ASSERT_TRUE(error_attr != NULL);
EXPECT_EQ(STUN_ERROR_SERVER_ERROR, error_attr->code());
EXPECT_EQ(std::string(STUN_ERROR_REASON_SERVER_ERROR), error_attr->reason());
EXPECT_TRUE(msg->GetByteString(STUN_ATTR_MESSAGE_INTEGRITY) != NULL);
EXPECT_TRUE(StunMessage::ValidateMessageIntegrity(
rport->last_stun_buf()->data<char>(), rport->last_stun_buf()->size(),
"rpass"));
EXPECT_TRUE(msg->GetUInt32(STUN_ATTR_FINGERPRINT) != NULL);
EXPECT_TRUE(StunMessage::ValidateFingerprint(
lport->last_stun_buf()->data<char>(), lport->last_stun_buf()->size()));
// No USERNAME with ICE.
EXPECT_TRUE(msg->GetByteString(STUN_ATTR_USERNAME) == NULL);
EXPECT_TRUE(msg->GetByteString(STUN_ATTR_PRIORITY) == NULL);
// Testing STUN binding requests from rport --> lport, having ICE_CONTROLLED
// and (incremented) RETRANSMIT_COUNT attributes.
rport->Reset();
rport->set_send_retransmit_count_attribute(true);
rconn->Ping(0);
rconn->Ping(0);
rconn->Ping(0);
ASSERT_TRUE_WAIT(rport->last_stun_msg() != NULL, kDefaultTimeout);
msg = rport->last_stun_msg();
EXPECT_EQ(STUN_BINDING_REQUEST, msg->type());
const StunUInt64Attribute* ice_controlled_attr =
msg->GetUInt64(STUN_ATTR_ICE_CONTROLLED);
ASSERT_TRUE(ice_controlled_attr != NULL);
EXPECT_EQ(rport->IceTiebreaker(), ice_controlled_attr->value());
EXPECT_TRUE(msg->GetByteString(STUN_ATTR_USE_CANDIDATE) == NULL);
// Request should include ping count.
const StunUInt32Attribute* retransmit_attr =
msg->GetUInt32(STUN_ATTR_RETRANSMIT_COUNT);
ASSERT_TRUE(retransmit_attr != NULL);
EXPECT_EQ(2U, retransmit_attr->value());
// Respond with a BINDING-RESPONSE.
request = CopyStunMessage(*msg);
lconn->OnReadPacket(rport->last_stun_buf()->data<char>(),
rport->last_stun_buf()->size(), /* packet_time_us */ -1);
msg = lport->last_stun_msg();
// Receive the BINDING-RESPONSE.
rconn->OnReadPacket(lport->last_stun_buf()->data<char>(),
lport->last_stun_buf()->size(), /* packet_time_us */ -1);
// Verify the Stun ping stats.
EXPECT_EQ(3U, rconn->stats().sent_ping_requests_total);
EXPECT_EQ(3U, rconn->stats().sent_ping_requests_before_first_response);
EXPECT_EQ(1U, rconn->stats().recv_ping_responses);
EXPECT_EQ(1U, lconn->stats().sent_ping_responses);
EXPECT_EQ(1U, lconn->stats().recv_ping_requests);
// Ping after receiver the first response
rconn->Ping(0);
rconn->Ping(0);
EXPECT_EQ(5U, rconn->stats().sent_ping_requests_total);
EXPECT_EQ(3U, rconn->stats().sent_ping_requests_before_first_response);
// Response should include same ping count.
retransmit_attr = msg->GetUInt32(STUN_ATTR_RETRANSMIT_COUNT);
ASSERT_TRUE(retransmit_attr != NULL);
EXPECT_EQ(2U, retransmit_attr->value());
}
TEST_F(PortTest, TestNomination) {
auto lport = CreateTestPort(kLocalAddr1, "lfrag", "lpass");
auto rport = CreateTestPort(kLocalAddr2, "rfrag", "rpass");
lport->SetIceRole(cricket::ICEROLE_CONTROLLING);
lport->SetIceTiebreaker(kTiebreaker1);
rport->SetIceRole(cricket::ICEROLE_CONTROLLED);
rport->SetIceTiebreaker(kTiebreaker2);
lport->PrepareAddress();
rport->PrepareAddress();
ASSERT_FALSE(lport->Candidates().empty());
ASSERT_FALSE(rport->Candidates().empty());
Connection* lconn =
lport->CreateConnection(rport->Candidates()[0], Port::ORIGIN_MESSAGE);
Connection* rconn =
rport->CreateConnection(lport->Candidates()[0], Port::ORIGIN_MESSAGE);
// |lconn| is controlling, |rconn| is controlled.
uint32_t nomination = 1234;
lconn->set_nomination(nomination);
EXPECT_FALSE(lconn->nominated());
EXPECT_FALSE(rconn->nominated());
EXPECT_EQ(lconn->nominated(), lconn->stats().nominated);
EXPECT_EQ(rconn->nominated(), rconn->stats().nominated);
// Send ping (including the nomination value) from |lconn| to |rconn|. This
// should set the remote nomination of |rconn|.
lconn->Ping(0);
ASSERT_TRUE_WAIT(lport->last_stun_msg(), kDefaultTimeout);
ASSERT_TRUE(lport->last_stun_buf());
rconn->OnReadPacket(lport->last_stun_buf()->data<char>(),
lport->last_stun_buf()->size(), /* packet_time_us */ -1);
EXPECT_EQ(nomination, rconn->remote_nomination());
EXPECT_FALSE(lconn->nominated());
EXPECT_TRUE(rconn->nominated());
EXPECT_EQ(lconn->nominated(), lconn->stats().nominated);
EXPECT_EQ(rconn->nominated(), rconn->stats().nominated);
// This should result in an acknowledgment sent back from |rconn| to |lconn|,
// updating the acknowledged nomination of |lconn|.
ASSERT_TRUE_WAIT(rport->last_stun_msg(), kDefaultTimeout);
ASSERT_TRUE(rport->last_stun_buf());
lconn->OnReadPacket(rport->last_stun_buf()->data<char>(),
rport->last_stun_buf()->size(), /* packet_time_us */ -1);
EXPECT_EQ(nomination, lconn->acked_nomination());
EXPECT_TRUE(lconn->nominated());
EXPECT_TRUE(rconn->nominated());
EXPECT_EQ(lconn->nominated(), lconn->stats().nominated);
EXPECT_EQ(rconn->nominated(), rconn->stats().nominated);
}
TEST_F(PortTest, TestRoundTripTime) {
rtc::ScopedFakeClock clock;
auto lport = CreateTestPort(kLocalAddr1, "lfrag", "lpass");
auto rport = CreateTestPort(kLocalAddr2, "rfrag", "rpass");
lport->SetIceRole(cricket::ICEROLE_CONTROLLING);
lport->SetIceTiebreaker(kTiebreaker1);
rport->SetIceRole(cricket::ICEROLE_CONTROLLED);
rport->SetIceTiebreaker(kTiebreaker2);
lport->PrepareAddress();
rport->PrepareAddress();
ASSERT_FALSE(lport->Candidates().empty());
ASSERT_FALSE(rport->Candidates().empty());
Connection* lconn =
lport->CreateConnection(rport->Candidates()[0], Port::ORIGIN_MESSAGE);
Connection* rconn =
rport->CreateConnection(lport->Candidates()[0], Port::ORIGIN_MESSAGE);
EXPECT_EQ(0u, lconn->stats().total_round_trip_time_ms);
EXPECT_FALSE(lconn->stats().current_round_trip_time_ms);
SendPingAndReceiveResponse(lconn, lport.get(), rconn, rport.get(), &clock,
10);
EXPECT_EQ(10u, lconn->stats().total_round_trip_time_ms);
ASSERT_TRUE(lconn->stats().current_round_trip_time_ms);
EXPECT_EQ(10u, *lconn->stats().current_round_trip_time_ms);
SendPingAndReceiveResponse(lconn, lport.get(), rconn, rport.get(), &clock,
20);
EXPECT_EQ(30u, lconn->stats().total_round_trip_time_ms);
ASSERT_TRUE(lconn->stats().current_round_trip_time_ms);
EXPECT_EQ(20u, *lconn->stats().current_round_trip_time_ms);
SendPingAndReceiveResponse(lconn, lport.get(), rconn, rport.get(), &clock,
30);
EXPECT_EQ(60u, lconn->stats().total_round_trip_time_ms);
ASSERT_TRUE(lconn->stats().current_round_trip_time_ms);
EXPECT_EQ(30u, *lconn->stats().current_round_trip_time_ms);
}
TEST_F(PortTest, TestUseCandidateAttribute) {
auto lport = CreateTestPort(kLocalAddr1, "lfrag", "lpass");
auto rport = CreateTestPort(kLocalAddr2, "rfrag", "rpass");
lport->SetIceRole(cricket::ICEROLE_CONTROLLING);
lport->SetIceTiebreaker(kTiebreaker1);
rport->SetIceRole(cricket::ICEROLE_CONTROLLED);
rport->SetIceTiebreaker(kTiebreaker2);
// Send a fake ping from lport to rport.
lport->PrepareAddress();
rport->PrepareAddress();
ASSERT_FALSE(rport->Candidates().empty());
Connection* lconn =
lport->CreateConnection(rport->Candidates()[0], Port::ORIGIN_MESSAGE);
lconn->Ping(0);
ASSERT_TRUE_WAIT(lport->last_stun_msg() != NULL, kDefaultTimeout);
IceMessage* msg = lport->last_stun_msg();
const StunUInt64Attribute* ice_controlling_attr =
msg->GetUInt64(STUN_ATTR_ICE_CONTROLLING);
ASSERT_TRUE(ice_controlling_attr != NULL);
const StunByteStringAttribute* use_candidate_attr =
msg->GetByteString(STUN_ATTR_USE_CANDIDATE);
ASSERT_TRUE(use_candidate_attr != NULL);
}
// Tests that when the network type changes, the network cost of the port will
// change, the network cost of the local candidates will change. Also tests that
// the remote network costs are updated with the stun binding requests.
TEST_F(PortTest, TestNetworkCostChange) {
rtc::Network* test_network = MakeNetwork(kLocalAddr1);
auto lport = CreateTestPort(test_network, "lfrag", "lpass");
auto rport = CreateTestPort(test_network, "rfrag", "rpass");
lport->SetIceRole(cricket::ICEROLE_CONTROLLING);
lport->SetIceTiebreaker(kTiebreaker1);
rport->SetIceRole(cricket::ICEROLE_CONTROLLED);
rport->SetIceTiebreaker(kTiebreaker2);
lport->PrepareAddress();
rport->PrepareAddress();
// Default local port cost is rtc::kNetworkCostUnknown.
EXPECT_EQ(rtc::kNetworkCostUnknown, lport->network_cost());
ASSERT_TRUE(!lport->Candidates().empty());
for (const cricket::Candidate& candidate : lport->Candidates()) {
EXPECT_EQ(rtc::kNetworkCostUnknown, candidate.network_cost());
}
// Change the network type to wifi.
test_network->set_type(rtc::ADAPTER_TYPE_WIFI);
EXPECT_EQ(rtc::kNetworkCostLow, lport->network_cost());
for (const cricket::Candidate& candidate : lport->Candidates()) {
EXPECT_EQ(rtc::kNetworkCostLow, candidate.network_cost());
}
// Add a connection and then change the network type.
Connection* lconn =
lport->CreateConnection(rport->Candidates()[0], Port::ORIGIN_MESSAGE);
// Change the network type to cellular.
test_network->set_type(rtc::ADAPTER_TYPE_CELLULAR);
EXPECT_EQ(rtc::kNetworkCostHigh, lport->network_cost());
for (const cricket::Candidate& candidate : lport->Candidates()) {
EXPECT_EQ(rtc::kNetworkCostHigh, candidate.network_cost());
}
test_network->set_type(rtc::ADAPTER_TYPE_WIFI);
Connection* rconn =
rport->CreateConnection(lport->Candidates()[0], Port::ORIGIN_MESSAGE);
test_network->set_type(rtc::ADAPTER_TYPE_CELLULAR);
lconn->Ping(0);
// The rconn's remote candidate cost is rtc::kNetworkCostLow, but the ping
// contains an attribute of network cost of rtc::kNetworkCostHigh. Once the
// message is handled in rconn, The rconn's remote candidate will have cost
// rtc::kNetworkCostHigh;
EXPECT_EQ(rtc::kNetworkCostLow, rconn->remote_candidate().network_cost());
ASSERT_TRUE_WAIT(lport->last_stun_msg() != NULL, kDefaultTimeout);
IceMessage* msg = lport->last_stun_msg();
EXPECT_EQ(STUN_BINDING_REQUEST, msg->type());
// Pass the binding request to rport.
rconn->OnReadPacket(lport->last_stun_buf()->data<char>(),
lport->last_stun_buf()->size(), /* packet_time_us */ -1);
// Wait until rport sends the response and then check the remote network cost.
ASSERT_TRUE_WAIT(rport->last_stun_msg() != NULL, kDefaultTimeout);
EXPECT_EQ(rtc::kNetworkCostHigh, rconn->remote_candidate().network_cost());
}
TEST_F(PortTest, TestNetworkInfoAttribute) {
rtc::Network* test_network = MakeNetwork(kLocalAddr1);
auto lport = CreateTestPort(test_network, "lfrag", "lpass");
auto rport = CreateTestPort(test_network, "rfrag", "rpass");
lport->SetIceRole(cricket::ICEROLE_CONTROLLING);
lport->SetIceTiebreaker(kTiebreaker1);
rport->SetIceRole(cricket::ICEROLE_CONTROLLED);
rport->SetIceTiebreaker(kTiebreaker2);
uint16_t lnetwork_id = 9;
lport->Network()->set_id(lnetwork_id);
// Send a fake ping from lport to rport.
lport->PrepareAddress();
rport->PrepareAddress();
Connection* lconn =
lport->CreateConnection(rport->Candidates()[0], Port::ORIGIN_MESSAGE);
lconn->Ping(0);
ASSERT_TRUE_WAIT(lport->last_stun_msg() != NULL, kDefaultTimeout);
IceMessage* msg = lport->last_stun_msg();
const StunUInt32Attribute* network_info_attr =
msg->GetUInt32(STUN_ATTR_GOOG_NETWORK_INFO);
ASSERT_TRUE(network_info_attr != NULL);
uint32_t network_info = network_info_attr->value();
EXPECT_EQ(lnetwork_id, network_info >> 16);
// Default network has unknown type and cost kNetworkCostUnknown.
EXPECT_EQ(rtc::kNetworkCostUnknown, network_info & 0xFFFF);
// Set the network type to be cellular so its cost will be kNetworkCostHigh.
// Send a fake ping from rport to lport.
test_network->set_type(rtc::ADAPTER_TYPE_CELLULAR);
uint16_t rnetwork_id = 8;
rport->Network()->set_id(rnetwork_id);
Connection* rconn =
rport->CreateConnection(lport->Candidates()[0], Port::ORIGIN_MESSAGE);
rconn->Ping(0);
ASSERT_TRUE_WAIT(rport->last_stun_msg() != NULL, kDefaultTimeout);
msg = rport->last_stun_msg();
network_info_attr = msg->GetUInt32(STUN_ATTR_GOOG_NETWORK_INFO);
ASSERT_TRUE(network_info_attr != NULL);
network_info = network_info_attr->value();
EXPECT_EQ(rnetwork_id, network_info >> 16);
EXPECT_EQ(rtc::kNetworkCostHigh, network_info & 0xFFFF);
}
// Test handling STUN messages.
TEST_F(PortTest, TestHandleStunMessage) {
// Our port will act as the "remote" port.
auto port = CreateTestPort(kLocalAddr2, "rfrag", "rpass");
std::unique_ptr<IceMessage> in_msg, out_msg;
auto buf = std::make_unique<ByteBufferWriter>();
rtc::SocketAddress addr(kLocalAddr1);
std::string username;
// BINDING-REQUEST from local to remote with valid ICE username,
// MESSAGE-INTEGRITY, and FINGERPRINT.
in_msg = CreateStunMessageWithUsername(STUN_BINDING_REQUEST, "rfrag:lfrag");
in_msg->AddMessageIntegrity("rpass");
in_msg->AddFingerprint();
WriteStunMessage(*in_msg, buf.get());
EXPECT_TRUE(port->GetStunMessage(buf->Data(), buf->Length(), addr, &out_msg,
&username));
EXPECT_TRUE(out_msg.get() != NULL);
EXPECT_EQ("lfrag", username);
// BINDING-RESPONSE without username, with MESSAGE-INTEGRITY and FINGERPRINT.
in_msg = CreateStunMessage(STUN_BINDING_RESPONSE);
in_msg->AddAttribute(std::make_unique<StunXorAddressAttribute>(
STUN_ATTR_XOR_MAPPED_ADDRESS, kLocalAddr2));
in_msg->AddMessageIntegrity("rpass");
in_msg->AddFingerprint();
WriteStunMessage(*in_msg, buf.get());
EXPECT_TRUE(port->GetStunMessage(buf->Data(), buf->Length(), addr, &out_msg,
&username));
EXPECT_TRUE(out_msg.get() != NULL);
EXPECT_EQ("", username);
// BINDING-ERROR-RESPONSE without username, with error, M-I, and FINGERPRINT.
in_msg = CreateStunMessage(STUN_BINDING_ERROR_RESPONSE);
in_msg->AddAttribute(std::make_unique<StunErrorCodeAttribute>(
STUN_ATTR_ERROR_CODE, STUN_ERROR_SERVER_ERROR,
STUN_ERROR_REASON_SERVER_ERROR));
in_msg->AddFingerprint();
WriteStunMessage(*in_msg, buf.get());
EXPECT_TRUE(port->GetStunMessage(buf->Data(), buf->Length(), addr, &out_msg,
&username));
EXPECT_TRUE(out_msg.get() != NULL);
EXPECT_EQ("", username);
ASSERT_TRUE(out_msg->GetErrorCode() != NULL);
EXPECT_EQ(STUN_ERROR_SERVER_ERROR, out_msg->GetErrorCode()->code());
EXPECT_EQ(std::string(STUN_ERROR_REASON_SERVER_ERROR),
out_msg->GetErrorCode()->reason());
}
// Tests handling of ICE binding requests with missing or incorrect usernames.
TEST_F(PortTest, TestHandleStunMessageBadUsername) {
auto port = CreateTestPort(kLocalAddr2, "rfrag", "rpass");
std::unique_ptr<IceMessage> in_msg, out_msg;
auto buf = std::make_unique<ByteBufferWriter>();
rtc::SocketAddress addr(kLocalAddr1);
std::string username;
// BINDING-REQUEST with no username.
in_msg = CreateStunMessage(STUN_BINDING_REQUEST);
in_msg->AddMessageIntegrity("rpass");
in_msg->AddFingerprint();
WriteStunMessage(*in_msg, buf.get());
EXPECT_TRUE(port->GetStunMessage(buf->Data(), buf->Length(), addr, &out_msg,
&username));
EXPECT_TRUE(out_msg.get() == NULL);
EXPECT_EQ("", username);
EXPECT_EQ(STUN_ERROR_BAD_REQUEST, port->last_stun_error_code());
// BINDING-REQUEST with empty username.
in_msg = CreateStunMessageWithUsername(STUN_BINDING_REQUEST, "");
in_msg->AddMessageIntegrity("rpass");
in_msg->AddFingerprint();
WriteStunMessage(*in_msg, buf.get());
EXPECT_TRUE(port->GetStunMessage(buf->Data(), buf->Length(), addr, &out_msg,
&username));
EXPECT_TRUE(out_msg.get() == NULL);
EXPECT_EQ("", username);
EXPECT_EQ(STUN_ERROR_UNAUTHORIZED, port->last_stun_error_code());
// BINDING-REQUEST with too-short username.
in_msg = CreateStunMessageWithUsername(STUN_BINDING_REQUEST, "rfra");
in_msg->AddMessageIntegrity("rpass");
in_msg->AddFingerprint();
WriteStunMessage(*in_msg, buf.get());
EXPECT_TRUE(port->GetStunMessage(buf->Data(), buf->Length(), addr, &out_msg,
&username));
EXPECT_TRUE(out_msg.get() == NULL);
EXPECT_EQ("", username);
EXPECT_EQ(STUN_ERROR_UNAUTHORIZED, port->last_stun_error_code());
// BINDING-REQUEST with reversed username.
in_msg = CreateStunMessageWithUsername(STUN_BINDING_REQUEST, "lfrag:rfrag");
in_msg->AddMessageIntegrity("rpass");
in_msg->AddFingerprint();
WriteStunMessage(*in_msg, buf.get());
EXPECT_TRUE(port->GetStunMessage(buf->Data(), buf->Length(), addr, &out_msg,
&username));
EXPECT_TRUE(out_msg.get() == NULL);
EXPECT_EQ("", username);
EXPECT_EQ(STUN_ERROR_UNAUTHORIZED, port->last_stun_error_code());
// BINDING-REQUEST with garbage username.
in_msg = CreateStunMessageWithUsername(STUN_BINDING_REQUEST, "abcd:efgh");
in_msg->AddMessageIntegrity("rpass");
in_msg->AddFingerprint();
WriteStunMessage(*in_msg, buf.get());
EXPECT_TRUE(port->GetStunMessage(buf->Data(), buf->Length(), addr, &out_msg,
&username));
EXPECT_TRUE(out_msg.get() == NULL);
EXPECT_EQ("", username);
EXPECT_EQ(STUN_ERROR_UNAUTHORIZED, port->last_stun_error_code());
}
// Test handling STUN messages with missing or malformed M-I.
TEST_F(PortTest, TestHandleStunMessageBadMessageIntegrity) {
// Our port will act as the "remote" port.
auto port = CreateTestPort(kLocalAddr2, "rfrag", "rpass");
std::unique_ptr<IceMessage> in_msg, out_msg;
auto buf = std::make_unique<ByteBufferWriter>();
rtc::SocketAddress addr(kLocalAddr1);
std::string username;
// BINDING-REQUEST from local to remote with valid ICE username and
// FINGERPRINT, but no MESSAGE-INTEGRITY.
in_msg = CreateStunMessageWithUsername(STUN_BINDING_REQUEST, "rfrag:lfrag");
in_msg->AddFingerprint();
WriteStunMessage(*in_msg, buf.get());
EXPECT_TRUE(port->GetStunMessage(buf->Data(), buf->Length(), addr, &out_msg,
&username));
EXPECT_TRUE(out_msg.get() == NULL);
EXPECT_EQ("", username);
EXPECT_EQ(STUN_ERROR_BAD_REQUEST, port->last_stun_error_code());
// BINDING-REQUEST from local to remote with valid ICE username and
// FINGERPRINT, but invalid MESSAGE-INTEGRITY.
in_msg = CreateStunMessageWithUsername(STUN_BINDING_REQUEST, "rfrag:lfrag");
in_msg->AddMessageIntegrity("invalid");
in_msg->AddFingerprint();
WriteStunMessage(*in_msg, buf.get());
EXPECT_TRUE(port->GetStunMessage(buf->Data(), buf->Length(), addr, &out_msg,
&username));
EXPECT_TRUE(out_msg.get() == NULL);
EXPECT_EQ("", username);
EXPECT_EQ(STUN_ERROR_UNAUTHORIZED, port->last_stun_error_code());
// TODO(?): BINDING-RESPONSES and BINDING-ERROR-RESPONSES are checked
// by the Connection, not the Port, since they require the remote username.
// Change this test to pass in data via Connection::OnReadPacket instead.
}
// Test handling STUN messages with missing or malformed FINGERPRINT.
TEST_F(PortTest, TestHandleStunMessageBadFingerprint) {
// Our port will act as the "remote" port.
auto port = CreateTestPort(kLocalAddr2, "rfrag", "rpass");
std::unique_ptr<IceMessage> in_msg, out_msg;
auto buf = std::make_unique<ByteBufferWriter>();
rtc::SocketAddress addr(kLocalAddr1);
std::string username;
// BINDING-REQUEST from local to remote with valid ICE username and
// MESSAGE-INTEGRITY, but no FINGERPRINT; GetStunMessage should fail.
in_msg = CreateStunMessageWithUsername(STUN_BINDING_REQUEST, "rfrag:lfrag");
in_msg->AddMessageIntegrity("rpass");
WriteStunMessage(*in_msg, buf.get());
EXPECT_FALSE(port->GetStunMessage(buf->Data(), buf->Length(), addr, &out_msg,
&username));
EXPECT_EQ(0, port->last_stun_error_code());
// Now, add a fingerprint, but munge the message so it's not valid.
in_msg->AddFingerprint();
in_msg->SetTransactionID("TESTTESTBADD");
WriteStunMessage(*in_msg, buf.get());
EXPECT_FALSE(port->GetStunMessage(buf->Data(), buf->Length(), addr, &out_msg,
&username));
EXPECT_EQ(0, port->last_stun_error_code());
// Valid BINDING-RESPONSE, except no FINGERPRINT.
in_msg = CreateStunMessage(STUN_BINDING_RESPONSE);
in_msg->AddAttribute(std::make_unique<StunXorAddressAttribute>(
STUN_ATTR_XOR_MAPPED_ADDRESS, kLocalAddr2));
in_msg->AddMessageIntegrity("rpass");
WriteStunMessage(*in_msg, buf.get());
EXPECT_FALSE(port->GetStunMessage(buf->Data(), buf->Length(), addr, &out_msg,
&username));
EXPECT_EQ(0, port->last_stun_error_code());
// Now, add a fingerprint, but munge the message so it's not valid.
in_msg->AddFingerprint();
in_msg->SetTransactionID("TESTTESTBADD");
WriteStunMessage(*in_msg, buf.get());
EXPECT_FALSE(port->GetStunMessage(buf->Data(), buf->Length(), addr, &out_msg,
&username));
EXPECT_EQ(0, port->last_stun_error_code());
// Valid BINDING-ERROR-RESPONSE, except no FINGERPRINT.
in_msg = CreateStunMessage(STUN_BINDING_ERROR_RESPONSE);
in_msg->AddAttribute(std::make_unique<StunErrorCodeAttribute>(
STUN_ATTR_ERROR_CODE, STUN_ERROR_SERVER_ERROR,
STUN_ERROR_REASON_SERVER_ERROR));
in_msg->AddMessageIntegrity("rpass");
WriteStunMessage(*in_msg, buf.get());
EXPECT_FALSE(port->GetStunMessage(buf->Data(), buf->Length(), addr, &out_msg,
&username));
EXPECT_EQ(0, port->last_stun_error_code());
// Now, add a fingerprint, but munge the message so it's not valid.
in_msg->AddFingerprint();
in_msg->SetTransactionID("TESTTESTBADD");
WriteStunMessage(*in_msg, buf.get());
EXPECT_FALSE(port->GetStunMessage(buf->Data(), buf->Length(), addr, &out_msg,
&username));
EXPECT_EQ(0, port->last_stun_error_code());
}
// Test handling a STUN message with unknown attributes in the
// "comprehension-required" range. Should respond with an error with the
// unknown attributes' IDs.
TEST_F(PortTest,
TestHandleStunRequestWithUnknownComprehensionRequiredAttribute) {
// Our port will act as the "remote" port.
std::unique_ptr<TestPort> port(CreateTestPort(kLocalAddr2, "rfrag", "rpass"));
std::unique_ptr<IceMessage> in_msg, out_msg;
auto buf = std::make_unique<ByteBufferWriter>();
rtc::SocketAddress addr(kLocalAddr1);
std::string username;
// Build ordinary message with valid ufrag/pass.
in_msg = CreateStunMessageWithUsername(STUN_BINDING_REQUEST, "rfrag:lfrag");
in_msg->AddMessageIntegrity("rpass");
// Add a couple attributes with ID in comprehension-required range.
in_msg->AddAttribute(StunAttribute::CreateUInt32(0x7777));
in_msg->AddAttribute(StunAttribute::CreateUInt32(0x4567));
// ... And one outside the range.
in_msg->AddAttribute(StunAttribute::CreateUInt32(0xdead));
in_msg->AddFingerprint();
WriteStunMessage(*in_msg, buf.get());
ASSERT_TRUE(port->GetStunMessage(buf->Data(), buf->Length(), addr, &out_msg,
&username));
IceMessage* error_response = port->last_stun_msg();
ASSERT_NE(nullptr, error_response);
// Verify that the "unknown attribute" error response has the right error
// code, and includes an attribute that lists out the unrecognized attribute
// types.
EXPECT_EQ(STUN_ERROR_UNKNOWN_ATTRIBUTE, error_response->GetErrorCodeValue());
const StunUInt16ListAttribute* unknown_attributes =
error_response->GetUnknownAttributes();
ASSERT_NE(nullptr, unknown_attributes);
ASSERT_EQ(2u, unknown_attributes->Size());
EXPECT_EQ(0x7777, unknown_attributes->GetType(0));
EXPECT_EQ(0x4567, unknown_attributes->GetType(1));
}
// Similar to the above, but with a response instead of a request. In this
// case the response should just be ignored and transaction treated is failed.
TEST_F(PortTest,
TestHandleStunResponseWithUnknownComprehensionRequiredAttribute) {
// Generic setup.
auto lport = CreateTestPort(kLocalAddr1, "lfrag", "lpass");
lport->SetIceRole(cricket::ICEROLE_CONTROLLING);
auto rport = CreateTestPort(kLocalAddr2, "rfrag", "rpass");
rport->SetIceRole(cricket::ICEROLE_CONTROLLED);
lport->PrepareAddress();
rport->PrepareAddress();
ASSERT_FALSE(lport->Candidates().empty());
ASSERT_FALSE(rport->Candidates().empty());
Connection* lconn =
lport->CreateConnection(rport->Candidates()[0], Port::ORIGIN_MESSAGE);
Connection* rconn =
rport->CreateConnection(lport->Candidates()[0], Port::ORIGIN_MESSAGE);
// Send request.
lconn->Ping(0);
ASSERT_TRUE_WAIT(lport->last_stun_msg() != NULL, kDefaultTimeout);
rconn->OnReadPacket(lport->last_stun_buf()->data<char>(),
lport->last_stun_buf()->size(), /* packet_time_us */ -1);
// Intercept request and add comprehension required attribute.
ASSERT_TRUE_WAIT(rport->last_stun_msg() != NULL, kDefaultTimeout);
auto modified_response = rport->last_stun_msg()->Clone();
modified_response->AddAttribute(StunAttribute::CreateUInt32(0x7777));
modified_response->RemoveAttribute(STUN_ATTR_FINGERPRINT);
modified_response->AddFingerprint();
ByteBufferWriter buf;
WriteStunMessage(*modified_response, &buf);
lconn->OnReadPacket(buf.Data(), buf.Length(), /* packet_time_us */ -1);
// Response should have been ignored, leaving us unwritable still.
EXPECT_FALSE(lconn->writable());
}
// Similar to the above, but with an indication. As with a response, it should
// just be ignored.
TEST_F(PortTest,
TestHandleStunIndicationWithUnknownComprehensionRequiredAttribute) {
// Generic set up.
auto lport = CreateTestPort(kLocalAddr2, "lfrag", "lpass");
lport->SetIceRole(cricket::ICEROLE_CONTROLLING);
auto rport = CreateTestPort(kLocalAddr2, "rfrag", "rpass");
rport->SetIceRole(cricket::ICEROLE_CONTROLLED);
lport->PrepareAddress();
rport->PrepareAddress();
ASSERT_FALSE(lport->Candidates().empty());
ASSERT_FALSE(rport->Candidates().empty());
Connection* lconn =
lport->CreateConnection(rport->Candidates()[0], Port::ORIGIN_MESSAGE);
// Generate indication with comprehension required attribute and verify it
// doesn't update last_ping_received.
auto in_msg = CreateStunMessage(STUN_BINDING_INDICATION);
in_msg->AddAttribute(StunAttribute::CreateUInt32(0x7777));
in_msg->AddFingerprint();
ByteBufferWriter buf;
WriteStunMessage(*in_msg, &buf);
lconn->OnReadPacket(buf.Data(), buf.Length(), /* packet_time_us */ -1);
EXPECT_EQ(0u, lconn->last_ping_received());
}
// Test handling of STUN binding indication messages . STUN binding
// indications are allowed only to the connection which is in read mode.
TEST_F(PortTest, TestHandleStunBindingIndication) {
auto lport = CreateTestPort(kLocalAddr2, "lfrag", "lpass");
lport->SetIceRole(cricket::ICEROLE_CONTROLLING);
lport->SetIceTiebreaker(kTiebreaker1);
// Verifying encoding and decoding STUN indication message.
std::unique_ptr<IceMessage> in_msg, out_msg;
std::unique_ptr<ByteBufferWriter> buf(new ByteBufferWriter());
rtc::SocketAddress addr(kLocalAddr1);
std::string username;
in_msg = CreateStunMessage(STUN_BINDING_INDICATION);
in_msg->AddFingerprint();
WriteStunMessage(*in_msg, buf.get());
EXPECT_TRUE(lport->GetStunMessage(buf->Data(), buf->Length(), addr, &out_msg,
&username));
EXPECT_TRUE(out_msg.get() != NULL);
EXPECT_EQ(out_msg->type(), STUN_BINDING_INDICATION);
EXPECT_EQ("", username);
// Verify connection can handle STUN indication and updates
// last_ping_received.
auto rport = CreateTestPort(kLocalAddr2, "rfrag", "rpass");
rport->SetIceRole(cricket::ICEROLE_CONTROLLED);
rport->SetIceTiebreaker(kTiebreaker2);
lport->PrepareAddress();
rport->PrepareAddress();
ASSERT_FALSE(lport->Candidates().empty());
ASSERT_FALSE(rport->Candidates().empty());
Connection* lconn =
lport->CreateConnection(rport->Candidates()[0], Port::ORIGIN_MESSAGE);
Connection* rconn =
rport->CreateConnection(lport->Candidates()[0], Port::ORIGIN_MESSAGE);
rconn->Ping(0);
ASSERT_TRUE_WAIT(rport->last_stun_msg() != NULL, kDefaultTimeout);
IceMessage* msg = rport->last_stun_msg();
EXPECT_EQ(STUN_BINDING_REQUEST, msg->type());
// Send rport binding request to lport.
lconn->OnReadPacket(rport->last_stun_buf()->data<char>(),
rport->last_stun_buf()->size(), /* packet_time_us */ -1);
ASSERT_TRUE_WAIT(lport->last_stun_msg() != NULL, kDefaultTimeout);
EXPECT_EQ(STUN_BINDING_RESPONSE, lport->last_stun_msg()->type());
int64_t last_ping_received1 = lconn->last_ping_received();