278 lines
9.9 KiB
C++
278 lines
9.9 KiB
C++
/*
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* Copyright 2013 The WebRTC Project Authors. All rights reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "p2p/base/async_stun_tcp_socket.h"
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#include <stdint.h>
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#include <string.h>
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#include <list>
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#include <memory>
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#include <string>
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#include "rtc_base/async_socket.h"
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#include "rtc_base/network/sent_packet.h"
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#include "rtc_base/third_party/sigslot/sigslot.h"
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#include "rtc_base/thread.h"
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#include "rtc_base/virtual_socket_server.h"
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#include "test/gtest.h"
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namespace cricket {
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static unsigned char kStunMessageWithZeroLength[] = {
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0x00, 0x01, 0x00, 0x00, // length of 0 (last 2 bytes)
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0x21, 0x12, 0xA4, 0x42, '0', '1', '2', '3',
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'4', '5', '6', '7', '8', '9', 'a', 'b',
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};
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static unsigned char kTurnChannelDataMessageWithZeroLength[] = {
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0x40, 0x00, 0x00, 0x00, // length of 0 (last 2 bytes)
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};
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static unsigned char kTurnChannelDataMessage[] = {
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0x40, 0x00, 0x00, 0x10, 0x21, 0x12, 0xA4, 0x42, '0', '1',
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'2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b',
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};
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static unsigned char kStunMessageWithInvalidLength[] = {
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0x00, 0x01, 0x00, 0x10, 0x21, 0x12, 0xA4, 0x42, '0', '1',
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'2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b',
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};
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static unsigned char kTurnChannelDataMessageWithInvalidLength[] = {
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0x80, 0x00, 0x00, 0x20, 0x21, 0x12, 0xA4, 0x42, '0', '1',
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'2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b',
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};
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static unsigned char kTurnChannelDataMessageWithOddLength[] = {
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0x40, 0x00, 0x00, 0x05, 0x21, 0x12, 0xA4, 0x42, '0',
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};
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static const rtc::SocketAddress kClientAddr("11.11.11.11", 0);
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static const rtc::SocketAddress kServerAddr("22.22.22.22", 0);
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class AsyncStunTCPSocketTest : public ::testing::Test,
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public sigslot::has_slots<> {
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protected:
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AsyncStunTCPSocketTest()
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: vss_(new rtc::VirtualSocketServer()), thread_(vss_.get()) {}
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virtual void SetUp() { CreateSockets(); }
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void CreateSockets() {
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rtc::AsyncSocket* server =
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vss_->CreateAsyncSocket(kServerAddr.family(), SOCK_STREAM);
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server->Bind(kServerAddr);
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recv_socket_.reset(new AsyncStunTCPSocket(server, true));
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recv_socket_->SignalNewConnection.connect(
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this, &AsyncStunTCPSocketTest::OnNewConnection);
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rtc::AsyncSocket* client =
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vss_->CreateAsyncSocket(kClientAddr.family(), SOCK_STREAM);
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send_socket_.reset(AsyncStunTCPSocket::Create(
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client, kClientAddr, recv_socket_->GetLocalAddress()));
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send_socket_->SignalSentPacket.connect(
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this, &AsyncStunTCPSocketTest::OnSentPacket);
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ASSERT_TRUE(send_socket_.get() != NULL);
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vss_->ProcessMessagesUntilIdle();
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}
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void OnReadPacket(rtc::AsyncPacketSocket* socket,
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const char* data,
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size_t len,
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const rtc::SocketAddress& remote_addr,
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const int64_t& /* packet_time_us */) {
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recv_packets_.push_back(std::string(data, len));
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}
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void OnSentPacket(rtc::AsyncPacketSocket* socket,
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const rtc::SentPacket& packet) {
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++sent_packets_;
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}
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void OnNewConnection(rtc::AsyncPacketSocket* server,
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rtc::AsyncPacketSocket* new_socket) {
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listen_socket_.reset(new_socket);
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new_socket->SignalReadPacket.connect(this,
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&AsyncStunTCPSocketTest::OnReadPacket);
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}
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bool Send(const void* data, size_t len) {
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rtc::PacketOptions options;
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int ret =
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send_socket_->Send(reinterpret_cast<const char*>(data), len, options);
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vss_->ProcessMessagesUntilIdle();
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return (ret == static_cast<int>(len));
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}
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bool CheckData(const void* data, int len) {
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bool ret = false;
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if (recv_packets_.size()) {
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std::string packet = recv_packets_.front();
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recv_packets_.pop_front();
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ret = (memcmp(data, packet.c_str(), len) == 0);
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}
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return ret;
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}
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std::unique_ptr<rtc::VirtualSocketServer> vss_;
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rtc::AutoSocketServerThread thread_;
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std::unique_ptr<AsyncStunTCPSocket> send_socket_;
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std::unique_ptr<AsyncStunTCPSocket> recv_socket_;
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std::unique_ptr<rtc::AsyncPacketSocket> listen_socket_;
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std::list<std::string> recv_packets_;
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int sent_packets_ = 0;
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};
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// Testing a stun packet sent/recv properly.
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TEST_F(AsyncStunTCPSocketTest, TestSingleStunPacket) {
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EXPECT_TRUE(
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Send(kStunMessageWithZeroLength, sizeof(kStunMessageWithZeroLength)));
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EXPECT_EQ(1u, recv_packets_.size());
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EXPECT_TRUE(CheckData(kStunMessageWithZeroLength,
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sizeof(kStunMessageWithZeroLength)));
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}
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// Verify sending multiple packets.
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TEST_F(AsyncStunTCPSocketTest, TestMultipleStunPackets) {
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EXPECT_TRUE(
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Send(kStunMessageWithZeroLength, sizeof(kStunMessageWithZeroLength)));
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EXPECT_TRUE(
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Send(kStunMessageWithZeroLength, sizeof(kStunMessageWithZeroLength)));
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EXPECT_TRUE(
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Send(kStunMessageWithZeroLength, sizeof(kStunMessageWithZeroLength)));
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EXPECT_TRUE(
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Send(kStunMessageWithZeroLength, sizeof(kStunMessageWithZeroLength)));
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EXPECT_EQ(4u, recv_packets_.size());
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}
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// Verifying TURN channel data message with zero length.
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TEST_F(AsyncStunTCPSocketTest, TestTurnChannelDataWithZeroLength) {
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EXPECT_TRUE(Send(kTurnChannelDataMessageWithZeroLength,
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sizeof(kTurnChannelDataMessageWithZeroLength)));
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EXPECT_EQ(1u, recv_packets_.size());
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EXPECT_TRUE(CheckData(kTurnChannelDataMessageWithZeroLength,
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sizeof(kTurnChannelDataMessageWithZeroLength)));
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}
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// Verifying TURN channel data message.
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TEST_F(AsyncStunTCPSocketTest, TestTurnChannelData) {
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EXPECT_TRUE(Send(kTurnChannelDataMessage, sizeof(kTurnChannelDataMessage)));
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EXPECT_EQ(1u, recv_packets_.size());
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EXPECT_TRUE(
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CheckData(kTurnChannelDataMessage, sizeof(kTurnChannelDataMessage)));
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}
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// Verifying TURN channel messages which needs padding handled properly.
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TEST_F(AsyncStunTCPSocketTest, TestTurnChannelDataPadding) {
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EXPECT_TRUE(Send(kTurnChannelDataMessageWithOddLength,
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sizeof(kTurnChannelDataMessageWithOddLength)));
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EXPECT_EQ(1u, recv_packets_.size());
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EXPECT_TRUE(CheckData(kTurnChannelDataMessageWithOddLength,
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sizeof(kTurnChannelDataMessageWithOddLength)));
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}
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// Verifying stun message with invalid length.
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TEST_F(AsyncStunTCPSocketTest, TestStunInvalidLength) {
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EXPECT_FALSE(Send(kStunMessageWithInvalidLength,
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sizeof(kStunMessageWithInvalidLength)));
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EXPECT_EQ(0u, recv_packets_.size());
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// Modify the message length to larger value.
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kStunMessageWithInvalidLength[2] = 0xFF;
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kStunMessageWithInvalidLength[3] = 0xFF;
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EXPECT_FALSE(Send(kStunMessageWithInvalidLength,
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sizeof(kStunMessageWithInvalidLength)));
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// Modify the message length to smaller value.
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kStunMessageWithInvalidLength[2] = 0x00;
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kStunMessageWithInvalidLength[3] = 0x01;
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EXPECT_FALSE(Send(kStunMessageWithInvalidLength,
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sizeof(kStunMessageWithInvalidLength)));
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}
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// Verifying TURN channel data message with invalid length.
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TEST_F(AsyncStunTCPSocketTest, TestTurnChannelDataWithInvalidLength) {
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EXPECT_FALSE(Send(kTurnChannelDataMessageWithInvalidLength,
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sizeof(kTurnChannelDataMessageWithInvalidLength)));
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// Modify the length to larger value.
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kTurnChannelDataMessageWithInvalidLength[2] = 0xFF;
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kTurnChannelDataMessageWithInvalidLength[3] = 0xF0;
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EXPECT_FALSE(Send(kTurnChannelDataMessageWithInvalidLength,
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sizeof(kTurnChannelDataMessageWithInvalidLength)));
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// Modify the length to smaller value.
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kTurnChannelDataMessageWithInvalidLength[2] = 0x00;
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kTurnChannelDataMessageWithInvalidLength[3] = 0x00;
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EXPECT_FALSE(Send(kTurnChannelDataMessageWithInvalidLength,
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sizeof(kTurnChannelDataMessageWithInvalidLength)));
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}
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// Verifying a small buffer handled (dropped) properly. This will be
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// a common one for both stun and turn.
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TEST_F(AsyncStunTCPSocketTest, TestTooSmallMessageBuffer) {
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char data[1];
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EXPECT_FALSE(Send(data, sizeof(data)));
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}
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// Verifying a legal large turn message.
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TEST_F(AsyncStunTCPSocketTest, TestMaximumSizeTurnPacket) {
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unsigned char packet[65539];
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packet[0] = 0x40;
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packet[1] = 0x00;
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packet[2] = 0xFF;
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packet[3] = 0xFF;
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EXPECT_TRUE(Send(packet, sizeof(packet)));
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}
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// Verifying a legal large stun message.
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TEST_F(AsyncStunTCPSocketTest, TestMaximumSizeStunPacket) {
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unsigned char packet[65552];
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packet[0] = 0x00;
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packet[1] = 0x01;
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packet[2] = 0xFF;
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packet[3] = 0xFC;
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EXPECT_TRUE(Send(packet, sizeof(packet)));
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}
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// Test that a turn message is sent completely even if it exceeds the socket
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// send buffer capacity.
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TEST_F(AsyncStunTCPSocketTest, TestWithSmallSendBuffer) {
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vss_->set_send_buffer_capacity(1);
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Send(kTurnChannelDataMessageWithOddLength,
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sizeof(kTurnChannelDataMessageWithOddLength));
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EXPECT_EQ(1u, recv_packets_.size());
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EXPECT_TRUE(CheckData(kTurnChannelDataMessageWithOddLength,
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sizeof(kTurnChannelDataMessageWithOddLength)));
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}
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// Test that SignalSentPacket is fired when a packet is sent.
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TEST_F(AsyncStunTCPSocketTest, SignalSentPacketFiredWhenPacketSent) {
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ASSERT_TRUE(
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Send(kStunMessageWithZeroLength, sizeof(kStunMessageWithZeroLength)));
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EXPECT_EQ(1, sent_packets_);
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// Send another packet for good measure.
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ASSERT_TRUE(
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Send(kStunMessageWithZeroLength, sizeof(kStunMessageWithZeroLength)));
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EXPECT_EQ(2, sent_packets_);
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}
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// Test that SignalSentPacket isn't fired when a packet isn't sent (for
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// example, because it's invalid).
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TEST_F(AsyncStunTCPSocketTest, SignalSentPacketNotFiredWhenPacketNotSent) {
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// Attempt to send a packet that's too small; since it isn't sent,
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// SignalSentPacket shouldn't fire.
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char data[1];
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ASSERT_FALSE(Send(data, sizeof(data)));
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EXPECT_EQ(0, sent_packets_);
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}
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} // namespace cricket
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