webrtc/talk/p2p/base/stunport_unittest.cc

301 lines
11 KiB
C++

/*
* libjingle
* Copyright 2009 Google Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "talk/p2p/base/basicpacketsocketfactory.h"
#include "talk/p2p/base/stunport.h"
#include "talk/p2p/base/teststunserver.h"
#include "webrtc/base/gunit.h"
#include "webrtc/base/helpers.h"
#include "webrtc/base/physicalsocketserver.h"
#include "webrtc/base/scoped_ptr.h"
#include "webrtc/base/socketaddress.h"
#include "webrtc/base/ssladapter.h"
#include "webrtc/base/virtualsocketserver.h"
using cricket::ServerAddresses;
using rtc::SocketAddress;
static const SocketAddress kLocalAddr("127.0.0.1", 0);
static const SocketAddress kStunAddr1("127.0.0.1", 5000);
static const SocketAddress kStunAddr2("127.0.0.1", 4000);
static const SocketAddress kBadAddr("0.0.0.1", 5000);
static const SocketAddress kStunHostnameAddr("localhost", 5000);
static const SocketAddress kBadHostnameAddr("not-a-real-hostname", 5000);
static const int kTimeoutMs = 10000;
// stun prio = 100 << 24 | 30 (IPV4) << 8 | 256 - 0
static const uint32 kStunCandidatePriority = 1677729535;
// Tests connecting a StunPort to a fake STUN server (cricket::StunServer)
// TODO: Use a VirtualSocketServer here. We have to use a
// PhysicalSocketServer right now since DNS is not part of SocketServer yet.
class StunPortTest : public testing::Test,
public sigslot::has_slots<> {
public:
StunPortTest()
: pss_(new rtc::PhysicalSocketServer),
ss_(new rtc::VirtualSocketServer(pss_.get())),
ss_scope_(ss_.get()),
network_("unittest", "unittest", rtc::IPAddress(INADDR_ANY), 32),
socket_factory_(rtc::Thread::Current()),
stun_server_1_(cricket::TestStunServer::Create(
rtc::Thread::Current(), kStunAddr1)),
stun_server_2_(cricket::TestStunServer::Create(
rtc::Thread::Current(), kStunAddr2)),
done_(false), error_(false), stun_keepalive_delay_(0) {
}
const cricket::Port* port() const { return stun_port_.get(); }
bool done() const { return done_; }
bool error() const { return error_; }
void CreateStunPort(const rtc::SocketAddress& server_addr) {
ServerAddresses stun_servers;
stun_servers.insert(server_addr);
CreateStunPort(stun_servers);
}
void CreateStunPort(const ServerAddresses& stun_servers) {
stun_port_.reset(cricket::StunPort::Create(
rtc::Thread::Current(), &socket_factory_, &network_,
kLocalAddr.ipaddr(), 0, 0, rtc::CreateRandomString(16),
rtc::CreateRandomString(22), stun_servers));
stun_port_->set_stun_keepalive_delay(stun_keepalive_delay_);
stun_port_->SignalPortComplete.connect(this,
&StunPortTest::OnPortComplete);
stun_port_->SignalPortError.connect(this,
&StunPortTest::OnPortError);
}
void CreateSharedStunPort(const rtc::SocketAddress& server_addr) {
socket_.reset(socket_factory_.CreateUdpSocket(
rtc::SocketAddress(kLocalAddr.ipaddr(), 0), 0, 0));
ASSERT_TRUE(socket_ != NULL);
socket_->SignalReadPacket.connect(this, &StunPortTest::OnReadPacket);
stun_port_.reset(cricket::UDPPort::Create(
rtc::Thread::Current(), &socket_factory_,
&network_, socket_.get(),
rtc::CreateRandomString(16), rtc::CreateRandomString(22)));
ASSERT_TRUE(stun_port_ != NULL);
ServerAddresses stun_servers;
stun_servers.insert(server_addr);
stun_port_->set_server_addresses(stun_servers);
stun_port_->SignalPortComplete.connect(this,
&StunPortTest::OnPortComplete);
stun_port_->SignalPortError.connect(this,
&StunPortTest::OnPortError);
}
void PrepareAddress() {
stun_port_->PrepareAddress();
}
void OnReadPacket(rtc::AsyncPacketSocket* socket, const char* data,
size_t size, const rtc::SocketAddress& remote_addr,
const rtc::PacketTime& packet_time) {
stun_port_->HandleIncomingPacket(
socket, data, size, remote_addr, rtc::PacketTime());
}
void SendData(const char* data, size_t len) {
stun_port_->HandleIncomingPacket(
socket_.get(), data, len, rtc::SocketAddress("22.22.22.22", 0),
rtc::PacketTime());
}
protected:
static void SetUpTestCase() {
// Ensure the RNG is inited.
rtc::InitRandom(NULL, 0);
}
void OnPortComplete(cricket::Port* port) {
ASSERT_FALSE(done_);
done_ = true;
error_ = false;
}
void OnPortError(cricket::Port* port) {
done_ = true;
error_ = true;
}
void SetKeepaliveDelay(int delay) {
stun_keepalive_delay_ = delay;
}
cricket::TestStunServer* stun_server_1() {
return stun_server_1_.get();
}
cricket::TestStunServer* stun_server_2() {
return stun_server_2_.get();
}
private:
rtc::scoped_ptr<rtc::PhysicalSocketServer> pss_;
rtc::scoped_ptr<rtc::VirtualSocketServer> ss_;
rtc::SocketServerScope ss_scope_;
rtc::Network network_;
rtc::BasicPacketSocketFactory socket_factory_;
rtc::scoped_ptr<cricket::UDPPort> stun_port_;
rtc::scoped_ptr<cricket::TestStunServer> stun_server_1_;
rtc::scoped_ptr<cricket::TestStunServer> stun_server_2_;
rtc::scoped_ptr<rtc::AsyncPacketSocket> socket_;
bool done_;
bool error_;
int stun_keepalive_delay_;
};
// Test that we can create a STUN port
TEST_F(StunPortTest, TestBasic) {
CreateStunPort(kStunAddr1);
EXPECT_EQ("stun", port()->Type());
EXPECT_EQ(0U, port()->Candidates().size());
}
// Test that we can get an address from a STUN server.
TEST_F(StunPortTest, TestPrepareAddress) {
CreateStunPort(kStunAddr1);
PrepareAddress();
EXPECT_TRUE_WAIT(done(), kTimeoutMs);
ASSERT_EQ(1U, port()->Candidates().size());
EXPECT_TRUE(kLocalAddr.EqualIPs(port()->Candidates()[0].address()));
// TODO: Add IPv6 tests here, once either physicalsocketserver supports
// IPv6, or this test is changed to use VirtualSocketServer.
}
// Test that we fail properly if we can't get an address.
TEST_F(StunPortTest, TestPrepareAddressFail) {
CreateStunPort(kBadAddr);
PrepareAddress();
EXPECT_TRUE_WAIT(done(), kTimeoutMs);
EXPECT_TRUE(error());
EXPECT_EQ(0U, port()->Candidates().size());
}
// Test that we can get an address from a STUN server specified by a hostname.
TEST_F(StunPortTest, TestPrepareAddressHostname) {
CreateStunPort(kStunHostnameAddr);
PrepareAddress();
EXPECT_TRUE_WAIT(done(), kTimeoutMs);
ASSERT_EQ(1U, port()->Candidates().size());
EXPECT_TRUE(kLocalAddr.EqualIPs(port()->Candidates()[0].address()));
EXPECT_EQ(kStunCandidatePriority, port()->Candidates()[0].priority());
}
// Test that we handle hostname lookup failures properly.
TEST_F(StunPortTest, TestPrepareAddressHostnameFail) {
CreateStunPort(kBadHostnameAddr);
PrepareAddress();
EXPECT_TRUE_WAIT(done(), kTimeoutMs);
EXPECT_TRUE(error());
EXPECT_EQ(0U, port()->Candidates().size());
}
// This test verifies keepalive response messages don't result in
// additional candidate generation.
TEST_F(StunPortTest, TestKeepAliveResponse) {
SetKeepaliveDelay(500); // 500ms of keepalive delay.
CreateStunPort(kStunHostnameAddr);
PrepareAddress();
EXPECT_TRUE_WAIT(done(), kTimeoutMs);
ASSERT_EQ(1U, port()->Candidates().size());
EXPECT_TRUE(kLocalAddr.EqualIPs(port()->Candidates()[0].address()));
// Waiting for 1 seond, which will allow us to process
// response for keepalive binding request. 500 ms is the keepalive delay.
rtc::Thread::Current()->ProcessMessages(1000);
ASSERT_EQ(1U, port()->Candidates().size());
}
// Test that a local candidate can be generated using a shared socket.
TEST_F(StunPortTest, TestSharedSocketPrepareAddress) {
CreateSharedStunPort(kStunAddr1);
PrepareAddress();
EXPECT_TRUE_WAIT(done(), kTimeoutMs);
ASSERT_EQ(1U, port()->Candidates().size());
EXPECT_TRUE(kLocalAddr.EqualIPs(port()->Candidates()[0].address()));
}
// Test that we still a get a local candidate with invalid stun server hostname.
// Also verifing that UDPPort can receive packets when stun address can't be
// resolved.
TEST_F(StunPortTest, TestSharedSocketPrepareAddressInvalidHostname) {
CreateSharedStunPort(kBadHostnameAddr);
PrepareAddress();
EXPECT_TRUE_WAIT(done(), kTimeoutMs);
ASSERT_EQ(1U, port()->Candidates().size());
EXPECT_TRUE(kLocalAddr.EqualIPs(port()->Candidates()[0].address()));
// Send data to port after it's ready. This is to make sure, UDP port can
// handle data with unresolved stun server address.
std::string data = "some random data, sending to cricket::Port.";
SendData(data.c_str(), data.length());
// No crash is success.
}
// Test that the same address is added only once if two STUN servers are in use.
TEST_F(StunPortTest, TestNoDuplicatedAddressWithTwoStunServers) {
ServerAddresses stun_servers;
stun_servers.insert(kStunAddr1);
stun_servers.insert(kStunAddr2);
CreateStunPort(stun_servers);
EXPECT_EQ("stun", port()->Type());
PrepareAddress();
EXPECT_TRUE_WAIT(done(), kTimeoutMs);
EXPECT_EQ(1U, port()->Candidates().size());
}
// Test that candidates can be allocated for multiple STUN servers, one of which
// is not reachable.
TEST_F(StunPortTest, TestMultipleStunServersWithBadServer) {
ServerAddresses stun_servers;
stun_servers.insert(kStunAddr1);
stun_servers.insert(kBadAddr);
CreateStunPort(stun_servers);
EXPECT_EQ("stun", port()->Type());
PrepareAddress();
EXPECT_TRUE_WAIT(done(), kTimeoutMs);
EXPECT_EQ(1U, port()->Candidates().size());
}
// Test that two candidates are allocated if the two STUN servers return
// different mapped addresses.
TEST_F(StunPortTest, TestTwoCandidatesWithTwoStunServersAcrossNat) {
const SocketAddress kStunMappedAddr1("77.77.77.77", 0);
const SocketAddress kStunMappedAddr2("88.77.77.77", 0);
stun_server_1()->set_fake_stun_addr(kStunMappedAddr1);
stun_server_2()->set_fake_stun_addr(kStunMappedAddr2);
ServerAddresses stun_servers;
stun_servers.insert(kStunAddr1);
stun_servers.insert(kStunAddr2);
CreateStunPort(stun_servers);
EXPECT_EQ("stun", port()->Type());
PrepareAddress();
EXPECT_TRUE_WAIT(done(), kTimeoutMs);
EXPECT_EQ(2U, port()->Candidates().size());
}