blob: 93fb5efc2084b301e23c00ad450e4e0a902c1936 [file] [log] [blame]
/*
* libjingle
* Copyright 2006, 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 <time.h>
#ifdef POSIX
#include <netinet/in.h>
#endif
#include <cmath>
#include "talk/base/logging.h"
#include "talk/base/gunit.h"
#include "talk/base/testclient.h"
#include "talk/base/testutils.h"
#include "talk/base/thread.h"
#include "talk/base/timeutils.h"
#include "talk/base/virtualsocketserver.h"
using namespace talk_base;
// Sends at a constant rate but with random packet sizes.
struct Sender : public MessageHandler {
Sender(Thread* th, AsyncSocket* s, uint32 rt)
: thread(th), socket(new AsyncUDPSocket(s)),
done(false), rate(rt), count(0) {
last_send = Time();
thread->PostDelayed(NextDelay(), this, 1);
}
uint32 NextDelay() {
uint32 size = (rand() % 4096) + 1;
return 1000 * size / rate;
}
void OnMessage(Message* pmsg) {
ASSERT_EQ(1u, pmsg->message_id);
if (done)
return;
uint32 cur_time = Time();
uint32 delay = cur_time - last_send;
uint32 size = rate * delay / 1000;
size = std::min<uint32>(size, 4096);
size = std::max<uint32>(size, sizeof(uint32));
count += size;
memcpy(dummy, &cur_time, sizeof(cur_time));
socket->Send(dummy, size);
last_send = cur_time;
thread->PostDelayed(NextDelay(), this, 1);
}
Thread* thread;
scoped_ptr<AsyncUDPSocket> socket;
bool done;
uint32 rate; // bytes per second
uint32 count;
uint32 last_send;
char dummy[4096];
};
struct Receiver : public MessageHandler, public sigslot::has_slots<> {
Receiver(Thread* th, AsyncSocket* s, uint32 bw)
: thread(th), socket(new AsyncUDPSocket(s)), bandwidth(bw), done(false),
count(0), sec_count(0), sum(0), sum_sq(0), samples(0) {
socket->SignalReadPacket.connect(this, &Receiver::OnReadPacket);
thread->PostDelayed(1000, this, 1);
}
~Receiver() {
thread->Clear(this);
}
void OnReadPacket(AsyncPacketSocket* s, const char* data, size_t size,
const SocketAddress& remote_addr) {
ASSERT_EQ(socket.get(), s);
ASSERT_GE(size, 4U);
count += size;
sec_count += size;
uint32 send_time = *reinterpret_cast<const uint32*>(data);
uint32 recv_time = Time();
uint32 delay = recv_time - send_time;
sum += delay;
sum_sq += delay * delay;
samples += 1;
}
void OnMessage(Message* pmsg) {
ASSERT_EQ(1u, pmsg->message_id);
if (done)
return;
// It is always possible for us to receive more than expected because
// packets can be further delayed in delivery.
if (bandwidth > 0)
ASSERT_TRUE(sec_count <= 5 * bandwidth / 4);
sec_count = 0;
thread->PostDelayed(1000, this, 1);
}
Thread* thread;
scoped_ptr<AsyncUDPSocket> socket;
uint32 bandwidth;
bool done;
uint32 count;
uint32 sec_count;
double sum;
double sum_sq;
uint32 samples;
};
class VirtualSocketServerTest : public testing::Test {
public:
VirtualSocketServerTest() : ss_(new VirtualSocketServer(NULL)),
kIPv4AnyAddress(IPAddress(INADDR_ANY), 0),
kIPv6AnyAddress(IPAddress(in6addr_any), 0) {
}
void CheckAddressIncrementalization(const SocketAddress& post,
const SocketAddress& pre) {
EXPECT_EQ(post.port(), pre.port() + 1);
IPAddress post_ip = post.ipaddr();
IPAddress pre_ip = pre.ipaddr();
EXPECT_EQ(pre_ip.family(), post_ip.family());
if (post_ip.family() == AF_INET) {
in_addr pre_ipv4 = pre_ip.ipv4_address();
in_addr post_ipv4 = post_ip.ipv4_address();
int difference = ntohl(post_ipv4.s_addr) - ntohl(pre_ipv4.s_addr);
EXPECT_EQ(1, difference);
} else if (post_ip.family() == AF_INET6) {
in6_addr post_ip6 = post_ip.ipv6_address();
in6_addr pre_ip6 = pre_ip.ipv6_address();
uint32* post_as_ints = reinterpret_cast<uint32*>(&post_ip6.s6_addr);
uint32* pre_as_ints = reinterpret_cast<uint32*>(&pre_ip6.s6_addr);
EXPECT_EQ(post_as_ints[3], pre_as_ints[3] + 1);
}
}
void BasicTest(const SocketAddress& initial_addr) {
AsyncSocket* socket = ss_->CreateAsyncSocket(SOCK_DGRAM);
socket->Bind(initial_addr);
SocketAddress server_addr = socket->GetLocalAddress();
// Make sure VSS didn't switch families on us.
EXPECT_EQ(server_addr.ipaddr().family(),
initial_addr.ipaddr().family());
TestClient* client1 = new TestClient(new AsyncUDPSocket(socket));
AsyncSocket* socket2 = ss_->CreateAsyncSocket(SOCK_DGRAM);
TestClient* client2 = new TestClient(new AsyncUDPSocket(socket2));
SocketAddress client2_addr;
EXPECT_EQ(3, client2->SendTo("foo", 3, server_addr));
EXPECT_TRUE(client1->CheckNextPacket("foo", 3, &client2_addr));
SocketAddress client1_addr;
EXPECT_EQ(6, client1->SendTo("bizbaz", 6, client2_addr));
EXPECT_TRUE(client2->CheckNextPacket("bizbaz", 6, &client1_addr));
EXPECT_EQ(client1_addr, server_addr);
for (int i = 0; i < 10; i++) {
client2 = new TestClient(AsyncUDPSocket::Create(ss_, SocketAddress()));
SocketAddress next_client2_addr;
EXPECT_EQ(3, client2->SendTo("foo", 3, server_addr));
EXPECT_TRUE(client1->CheckNextPacket("foo", 3, &next_client2_addr));
CheckAddressIncrementalization(next_client2_addr, client2_addr);
// EXPECT_EQ(next_client2_addr.port(), client2_addr.port() + 1);
SocketAddress server_addr2;
EXPECT_EQ(6, client1->SendTo("bizbaz", 6, next_client2_addr));
EXPECT_TRUE(client2->CheckNextPacket("bizbaz", 6, &server_addr2));
EXPECT_EQ(server_addr2, server_addr);
client2_addr = next_client2_addr;
}
}
// initial_addr should be made from either INADDR_ANY or in6addr_any.
void ConnectTest(const SocketAddress& initial_addr) {
testing::StreamSink sink;
SocketAddress accept_addr;
const SocketAddress kEmptyAddr;
// Create client
AsyncSocket* client = ss_->CreateAsyncSocket(SOCK_STREAM);
sink.Monitor(client);
EXPECT_EQ(client->GetState(), AsyncSocket::CS_CLOSED);
EXPECT_EQ(client->GetLocalAddress(), kEmptyAddr);
// Create server
AsyncSocket* server = ss_->CreateAsyncSocket(SOCK_STREAM);
sink.Monitor(server);
EXPECT_NE(0, server->Listen(5)); // Bind required
EXPECT_EQ(0, server->Bind(initial_addr));
EXPECT_EQ(server->GetLocalAddress().ipaddr().family(),
initial_addr.ipaddr().family());
EXPECT_EQ(0, server->Listen(5));
EXPECT_EQ(server->GetState(), AsyncSocket::CS_CONNECTING);
// No pending server connections
EXPECT_FALSE(sink.Check(server, testing::SSE_READ));
EXPECT_TRUE(NULL == server->Accept(&accept_addr));
EXPECT_EQ(accept_addr, kEmptyAddr);
// Attempt connect to listening socket
EXPECT_EQ(0, client->Connect(server->GetLocalAddress()));
EXPECT_NE(client->GetLocalAddress(), kEmptyAddr); // Implicit Bind
EXPECT_NE(client->GetLocalAddress(), server->GetLocalAddress());
// Client is connecting
EXPECT_EQ(client->GetState(), AsyncSocket::CS_CONNECTING);
EXPECT_FALSE(sink.Check(client, testing::SSE_OPEN));
EXPECT_FALSE(sink.Check(client, testing::SSE_CLOSE));
ss_->ProcessMessagesUntilIdle();
// Client still connecting
EXPECT_EQ(client->GetState(), AsyncSocket::CS_CONNECTING);
EXPECT_FALSE(sink.Check(client, testing::SSE_OPEN));
EXPECT_FALSE(sink.Check(client, testing::SSE_CLOSE));
// Server has pending connection
EXPECT_TRUE(sink.Check(server, testing::SSE_READ));
Socket* accepted = server->Accept(&accept_addr);
EXPECT_TRUE(NULL != accepted);
EXPECT_NE(accept_addr, kEmptyAddr);
EXPECT_EQ(accepted->GetRemoteAddress(), accept_addr);
EXPECT_EQ(accepted->GetState(), AsyncSocket::CS_CONNECTED);
EXPECT_EQ(accepted->GetLocalAddress(), server->GetLocalAddress());
EXPECT_EQ(accepted->GetRemoteAddress(), client->GetLocalAddress());
ss_->ProcessMessagesUntilIdle();
// Client has connected
EXPECT_EQ(client->GetState(), AsyncSocket::CS_CONNECTED);
EXPECT_TRUE(sink.Check(client, testing::SSE_OPEN));
EXPECT_FALSE(sink.Check(client, testing::SSE_CLOSE));
EXPECT_EQ(client->GetRemoteAddress(), server->GetLocalAddress());
EXPECT_EQ(client->GetRemoteAddress(), accepted->GetLocalAddress());
}
void ConnectToNonListenerTest(const SocketAddress& initial_addr) {
testing::StreamSink sink;
SocketAddress accept_addr;
const SocketAddress kEmptyAddr;
// Create client
AsyncSocket* client = ss_->CreateAsyncSocket(SOCK_STREAM);
sink.Monitor(client);
// Create server
AsyncSocket* server = ss_->CreateAsyncSocket(SOCK_STREAM);
sink.Monitor(server);
EXPECT_EQ(0, server->Bind(initial_addr));
EXPECT_EQ(server->GetLocalAddress().ipaddr().family(),
initial_addr.ipaddr().family());
// Attempt connect to non-listening socket
EXPECT_EQ(0, client->Connect(server->GetLocalAddress()));
ss_->ProcessMessagesUntilIdle();
// No pending server connections
EXPECT_FALSE(sink.Check(server, testing::SSE_READ));
EXPECT_TRUE(NULL == server->Accept(&accept_addr));
EXPECT_EQ(accept_addr, kEmptyAddr);
// Connection failed
EXPECT_EQ(client->GetState(), AsyncSocket::CS_CLOSED);
EXPECT_FALSE(sink.Check(client, testing::SSE_OPEN));
EXPECT_TRUE(sink.Check(client, testing::SSE_ERROR));
EXPECT_EQ(client->GetRemoteAddress(), kEmptyAddr);
}
void CloseDuringConnectTest(const SocketAddress& initial_addr) {
testing::StreamSink sink;
SocketAddress accept_addr;
const SocketAddress kEmptyAddr;
// Create client and server
AsyncSocket* client = ss_->CreateAsyncSocket(SOCK_STREAM);
sink.Monitor(client);
AsyncSocket* server = ss_->CreateAsyncSocket(SOCK_STREAM);
sink.Monitor(server);
// Initiate connect
EXPECT_EQ(0, server->Bind(initial_addr));
EXPECT_EQ(server->GetLocalAddress().ipaddr().family(),
initial_addr.ipaddr().family());
EXPECT_EQ(0, server->Listen(5));
EXPECT_EQ(0, client->Connect(server->GetLocalAddress()));
// Server close before socket enters accept queue
EXPECT_FALSE(sink.Check(server, testing::SSE_READ));
server->Close();
ss_->ProcessMessagesUntilIdle();
// Result: connection failed
EXPECT_EQ(client->GetState(), AsyncSocket::CS_CLOSED);
EXPECT_TRUE(sink.Check(client, testing::SSE_ERROR));
// New server
delete server;
server = ss_->CreateAsyncSocket(SOCK_STREAM);
sink.Monitor(server);
// Initiate connect
EXPECT_EQ(0, server->Bind(initial_addr));
EXPECT_EQ(server->GetLocalAddress().ipaddr().family(),
initial_addr.ipaddr().family());
EXPECT_EQ(0, server->Listen(5));
EXPECT_EQ(0, client->Connect(server->GetLocalAddress()));
ss_->ProcessMessagesUntilIdle();
// Server close while socket is in accept queue
EXPECT_TRUE(sink.Check(server, testing::SSE_READ));
server->Close();
ss_->ProcessMessagesUntilIdle();
// Result: connection failed
EXPECT_EQ(client->GetState(), AsyncSocket::CS_CLOSED);
EXPECT_TRUE(sink.Check(client, testing::SSE_ERROR));
// New server
delete server;
server = ss_->CreateAsyncSocket(SOCK_STREAM);
sink.Monitor(server);
// Initiate connect
EXPECT_EQ(0, server->Bind(initial_addr));
EXPECT_EQ(server->GetLocalAddress().ipaddr().family(),
initial_addr.ipaddr().family());
EXPECT_EQ(0, server->Listen(5));
EXPECT_EQ(0, client->Connect(server->GetLocalAddress()));
ss_->ProcessMessagesUntilIdle();
// Server accepts connection
EXPECT_TRUE(sink.Check(server, testing::SSE_READ));
AsyncSocket* accepted = server->Accept(&accept_addr);
ASSERT_TRUE(NULL != accepted);
sink.Monitor(accepted);
// Client closes before connection complets
EXPECT_EQ(accepted->GetState(), AsyncSocket::CS_CONNECTED);
// Connected message has not been processed yet.
EXPECT_EQ(client->GetState(), AsyncSocket::CS_CONNECTING);
client->Close();
ss_->ProcessMessagesUntilIdle();
// Result: accepted socket closes
EXPECT_EQ(accepted->GetState(), AsyncSocket::CS_CLOSED);
EXPECT_TRUE(sink.Check(accepted, testing::SSE_CLOSE));
EXPECT_FALSE(sink.Check(client, testing::SSE_CLOSE));
}
void CloseTest(const SocketAddress& initial_addr) {
testing::StreamSink sink;
const SocketAddress kEmptyAddr;
// Create clients
AsyncSocket* a = ss_->CreateAsyncSocket(SOCK_STREAM);
sink.Monitor(a);
a->Bind(initial_addr);
EXPECT_EQ(a->GetLocalAddress().ipaddr().family(),
initial_addr.ipaddr().family());
AsyncSocket* b = ss_->CreateAsyncSocket(SOCK_STREAM);
sink.Monitor(b);
b->Bind(initial_addr);
EXPECT_EQ(b->GetLocalAddress().ipaddr().family(),
initial_addr.ipaddr().family());
EXPECT_EQ(0, a->Connect(b->GetLocalAddress()));
EXPECT_EQ(0, b->Connect(a->GetLocalAddress()));
ss_->ProcessMessagesUntilIdle();
EXPECT_TRUE(sink.Check(a, testing::SSE_OPEN));
EXPECT_EQ(a->GetState(), AsyncSocket::CS_CONNECTED);
EXPECT_EQ(a->GetRemoteAddress(), b->GetLocalAddress());
EXPECT_TRUE(sink.Check(b, testing::SSE_OPEN));
EXPECT_EQ(b->GetState(), AsyncSocket::CS_CONNECTED);
EXPECT_EQ(b->GetRemoteAddress(), a->GetLocalAddress());
EXPECT_EQ(1, a->Send("a", 1));
b->Close();
EXPECT_EQ(1, a->Send("b", 1));
ss_->ProcessMessagesUntilIdle();
char buffer[10];
EXPECT_FALSE(sink.Check(b, testing::SSE_READ));
EXPECT_EQ(-1, b->Recv(buffer, 10));
EXPECT_TRUE(sink.Check(a, testing::SSE_CLOSE));
EXPECT_EQ(a->GetState(), AsyncSocket::CS_CLOSED);
EXPECT_EQ(a->GetRemoteAddress(), kEmptyAddr);
EXPECT_FALSE(sink.Check(b, testing::SSE_CLOSE)); // No signal for Closer
EXPECT_EQ(b->GetState(), AsyncSocket::CS_CLOSED);
EXPECT_EQ(b->GetRemoteAddress(), kEmptyAddr);
}
void TcpSendTest(const SocketAddress& initial_addr) {
testing::StreamSink sink;
const SocketAddress kEmptyAddr;
// Connect two sockets
AsyncSocket* a = ss_->CreateAsyncSocket(SOCK_STREAM);
sink.Monitor(a);
a->Bind(initial_addr);
EXPECT_EQ(a->GetLocalAddress().ipaddr().family(),
initial_addr.ipaddr().family());
AsyncSocket* b = ss_->CreateAsyncSocket(SOCK_STREAM);
sink.Monitor(b);
b->Bind(initial_addr);
EXPECT_EQ(b->GetLocalAddress().ipaddr().family(),
initial_addr.ipaddr().family());
EXPECT_EQ(0, a->Connect(b->GetLocalAddress()));
EXPECT_EQ(0, b->Connect(a->GetLocalAddress()));
ss_->ProcessMessagesUntilIdle();
const size_t kBufferSize = 2000;
ss_->set_send_buffer_capacity(kBufferSize);
ss_->set_recv_buffer_capacity(kBufferSize);
const size_t kDataSize = 5000;
char send_buffer[kDataSize], recv_buffer[kDataSize];
for (size_t i = 0; i < kDataSize; ++i) send_buffer[i] = i;
memset(recv_buffer, 0, sizeof(recv_buffer));
size_t send_pos = 0, recv_pos = 0;
// Can't send more than send buffer in one write
int result = a->Send(send_buffer + send_pos, kDataSize - send_pos);
EXPECT_EQ(static_cast<int>(kBufferSize), result);
send_pos += result;
ss_->ProcessMessagesUntilIdle();
EXPECT_FALSE(sink.Check(a, testing::SSE_WRITE));
EXPECT_TRUE(sink.Check(b, testing::SSE_READ));
// Receive buffer is already filled, fill send buffer again
result = a->Send(send_buffer + send_pos, kDataSize - send_pos);
EXPECT_EQ(static_cast<int>(kBufferSize), result);
send_pos += result;
ss_->ProcessMessagesUntilIdle();
EXPECT_FALSE(sink.Check(a, testing::SSE_WRITE));
EXPECT_FALSE(sink.Check(b, testing::SSE_READ));
// No more room in send or receive buffer
result = a->Send(send_buffer + send_pos, kDataSize - send_pos);
EXPECT_EQ(-1, result);
EXPECT_TRUE(a->IsBlocking());
// Read a subset of the data
result = b->Recv(recv_buffer + recv_pos, 500);
EXPECT_EQ(500, result);
recv_pos += result;
ss_->ProcessMessagesUntilIdle();
EXPECT_TRUE(sink.Check(a, testing::SSE_WRITE));
EXPECT_TRUE(sink.Check(b, testing::SSE_READ));
// Room for more on the sending side
result = a->Send(send_buffer + send_pos, kDataSize - send_pos);
EXPECT_EQ(500, result);
send_pos += result;
// Empty the recv buffer
while (true) {
result = b->Recv(recv_buffer + recv_pos, kDataSize - recv_pos);
if (result < 0) {
EXPECT_EQ(-1, result);
EXPECT_TRUE(b->IsBlocking());
break;
}
recv_pos += result;
}
ss_->ProcessMessagesUntilIdle();
EXPECT_TRUE(sink.Check(b, testing::SSE_READ));
// Continue to empty the recv buffer
while (true) {
result = b->Recv(recv_buffer + recv_pos, kDataSize - recv_pos);
if (result < 0) {
EXPECT_EQ(-1, result);
EXPECT_TRUE(b->IsBlocking());
break;
}
recv_pos += result;
}
// Send last of the data
result = a->Send(send_buffer + send_pos, kDataSize - send_pos);
EXPECT_EQ(500, result);
send_pos += result;
ss_->ProcessMessagesUntilIdle();
EXPECT_TRUE(sink.Check(b, testing::SSE_READ));
// Receive the last of the data
while (true) {
result = b->Recv(recv_buffer + recv_pos, kDataSize - recv_pos);
if (result < 0) {
EXPECT_EQ(-1, result);
EXPECT_TRUE(b->IsBlocking());
break;
}
recv_pos += result;
}
ss_->ProcessMessagesUntilIdle();
EXPECT_FALSE(sink.Check(b, testing::SSE_READ));
// The received data matches the sent data
EXPECT_EQ(kDataSize, send_pos);
EXPECT_EQ(kDataSize, recv_pos);
EXPECT_EQ(0, memcmp(recv_buffer, send_buffer, kDataSize));
}
void TcpSendsPacketsInOrderTest(const SocketAddress& initial_addr) {
const SocketAddress kEmptyAddr;
// Connect two sockets
AsyncSocket* a = ss_->CreateAsyncSocket(SOCK_STREAM);
AsyncSocket* b = ss_->CreateAsyncSocket(SOCK_STREAM);
a->Bind(initial_addr);
EXPECT_EQ(a->GetLocalAddress().ipaddr().family(),
initial_addr.ipaddr().family());
b->Bind(initial_addr);
EXPECT_EQ(b->GetLocalAddress().ipaddr().family(),
initial_addr.ipaddr().family());
EXPECT_EQ(0, a->Connect(b->GetLocalAddress()));
EXPECT_EQ(0, b->Connect(a->GetLocalAddress()));
ss_->ProcessMessagesUntilIdle();
// First, deliver all packets in 0 ms.
char buffer[2] = { 0, 0 };
const size_t cNumPackets = 10;
for (size_t i = 0; i < cNumPackets; ++i) {
buffer[0] = '0' + i;
EXPECT_EQ(1, a->Send(buffer, 1));
}
ss_->ProcessMessagesUntilIdle();
for (size_t i = 0; i < cNumPackets; ++i) {
EXPECT_EQ(1, b->Recv(buffer, sizeof(buffer)));
EXPECT_EQ(static_cast<char>('0' + i), buffer[0]);
}
// Next, deliver packets at random intervals
const uint32 mean = 50;
const uint32 stddev = 50;
ss_->set_delay_mean(mean);
ss_->set_delay_stddev(stddev);
ss_->UpdateDelayDistribution();
for (size_t i = 0; i < cNumPackets; ++i) {
buffer[0] = 'A' + i;
EXPECT_EQ(1, a->Send(buffer, 1));
}
ss_->ProcessMessagesUntilIdle();
for (size_t i = 0; i < cNumPackets; ++i) {
EXPECT_EQ(1, b->Recv(buffer, sizeof(buffer)));
EXPECT_EQ(static_cast<char>('A' + i), buffer[0]);
}
}
void BandwidthTest(const SocketAddress& initial_addr) {
AsyncSocket* send_socket = ss_->CreateAsyncSocket(SOCK_DGRAM);
AsyncSocket* recv_socket = ss_->CreateAsyncSocket(SOCK_DGRAM);
ASSERT_EQ(0, send_socket->Bind(initial_addr));
ASSERT_EQ(0, recv_socket->Bind(initial_addr));
EXPECT_EQ(send_socket->GetLocalAddress().ipaddr().family(),
initial_addr.ipaddr().family());
EXPECT_EQ(recv_socket->GetLocalAddress().ipaddr().family(),
initial_addr.ipaddr().family());
ASSERT_EQ(0, send_socket->Connect(recv_socket->GetLocalAddress()));
uint32 bandwidth = 64 * 1024;
ss_->set_bandwidth(bandwidth);
Thread* pthMain = Thread::Current();
Sender sender(pthMain, send_socket, 80 * 1024);
Receiver receiver(pthMain, recv_socket, bandwidth);
pthMain->ProcessMessages(5000);
sender.done = true;
pthMain->ProcessMessages(5000);
ASSERT_TRUE(receiver.count >= 5 * 3 * bandwidth / 4);
ASSERT_TRUE(receiver.count <= 6 * bandwidth); // queue could drain for 1s
ss_->set_bandwidth(0);
}
void DelayTest(const SocketAddress& initial_addr) {
time_t seed = ::time(NULL);
LOG(LS_VERBOSE) << "seed = " << seed;
srand(seed);
const uint32 mean = 2000;
const uint32 stddev = 500;
ss_->set_delay_mean(mean);
ss_->set_delay_stddev(stddev);
ss_->UpdateDelayDistribution();
AsyncSocket* send_socket = ss_->CreateAsyncSocket(SOCK_DGRAM);
AsyncSocket* recv_socket = ss_->CreateAsyncSocket(SOCK_DGRAM);
ASSERT_EQ(0, send_socket->Bind(initial_addr));
ASSERT_EQ(0, recv_socket->Bind(initial_addr));
EXPECT_EQ(send_socket->GetLocalAddress().ipaddr().family(),
initial_addr.ipaddr().family());
EXPECT_EQ(recv_socket->GetLocalAddress().ipaddr().family(),
initial_addr.ipaddr().family());
ASSERT_EQ(0, send_socket->Connect(recv_socket->GetLocalAddress()));
Thread* pthMain = Thread::Current();
// Avg packet size is 2K, so at 200KB/s for 10s, we should see about
// 1000 packets, which is necessary to get a good distribution.
Sender sender(pthMain, send_socket, 100 * 2 * 1024);
Receiver receiver(pthMain, recv_socket, 0);
pthMain->ProcessMessages(10000);
sender.done = receiver.done = true;
ss_->ProcessMessagesUntilIdle();
const double sample_mean = receiver.sum / receiver.samples;
double num =
receiver.samples * receiver.sum_sq - receiver.sum * receiver.sum;
double den = receiver.samples * (receiver.samples - 1);
const double sample_stddev = std::sqrt(num / den);
LOG(LS_VERBOSE) << "mean=" << sample_mean << " stddev=" << sample_stddev;
EXPECT_LE(500u, receiver.samples);
// We initially used a 0.1 fudge factor, but on the build machine, we
// have seen the value differ by as much as 0.13.
EXPECT_NEAR(mean, sample_mean, 0.15 * mean);
EXPECT_NEAR(stddev, sample_stddev, 0.15 * stddev);
ss_->set_delay_mean(0);
ss_->set_delay_stddev(0);
ss_->UpdateDelayDistribution();
}
// Test cross-family communication between a client bound to client_addr and a
// server bound to server_addr. shouldSucceed indicates if communication is
// expected to work or not.
void CrossFamilyConnectionTest(const SocketAddress& client_addr,
const SocketAddress& server_addr,
bool shouldSucceed) {
testing::StreamSink sink;
SocketAddress accept_address;
const SocketAddress kEmptyAddr;
// Client gets a IPv4 address
AsyncSocket* client = ss_->CreateAsyncSocket(SOCK_STREAM);
sink.Monitor(client);
EXPECT_EQ(client->GetState(), AsyncSocket::CS_CLOSED);
EXPECT_EQ(client->GetLocalAddress(), kEmptyAddr);
client->Bind(client_addr);
// Server gets a non-mapped non-any IPv6 address.
// IPv4 sockets should not be able to connect to this.
AsyncSocket* server = ss_->CreateAsyncSocket(SOCK_STREAM);
sink.Monitor(server);
server->Bind(server_addr);
server->Listen(5);
if (shouldSucceed) {
EXPECT_EQ(0, client->Connect(server->GetLocalAddress()));
ss_->ProcessMessagesUntilIdle();
EXPECT_TRUE(sink.Check(server, testing::SSE_READ));
Socket* accepted = server->Accept(&accept_address);
EXPECT_TRUE(NULL != accepted);
EXPECT_NE(kEmptyAddr, accept_address);
ss_->ProcessMessagesUntilIdle();
EXPECT_TRUE(sink.Check(client, testing::SSE_OPEN));
EXPECT_EQ(client->GetRemoteAddress(), server->GetLocalAddress());
} else {
// Check that the connection failed.
EXPECT_EQ(-1, client->Connect(server->GetLocalAddress()));
ss_->ProcessMessagesUntilIdle();
EXPECT_FALSE(sink.Check(server, testing::SSE_READ));
EXPECT_TRUE(NULL == server->Accept(&accept_address));
EXPECT_EQ(accept_address, kEmptyAddr);
EXPECT_EQ(client->GetState(), AsyncSocket::CS_CLOSED);
EXPECT_FALSE(sink.Check(client, testing::SSE_OPEN));
EXPECT_EQ(client->GetRemoteAddress(), kEmptyAddr);
}
}
// Test cross-family datagram sending between a client bound to client_addr
// and a server bound to server_addr. shouldSucceed indicates if sending is
// expected to succed or not.
void CrossFamilyDatagramTest(const SocketAddress& client_addr,
const SocketAddress& server_addr,
bool shouldSucceed) {
AsyncSocket* socket = ss_->CreateAsyncSocket(SOCK_DGRAM);
socket->Bind(server_addr);
SocketAddress bound_server_addr = socket->GetLocalAddress();
TestClient* client1 = new TestClient(new AsyncUDPSocket(socket));
AsyncSocket* socket2 = ss_->CreateAsyncSocket(SOCK_DGRAM);
socket2->Bind(client_addr);
TestClient* client2 = new TestClient(new AsyncUDPSocket(socket2));
SocketAddress client2_addr;
if (shouldSucceed) {
EXPECT_EQ(3, client2->SendTo("foo", 3, bound_server_addr));
EXPECT_TRUE(client1->CheckNextPacket("foo", 3, &client2_addr));
SocketAddress client1_addr;
EXPECT_EQ(6, client1->SendTo("bizbaz", 6, client2_addr));
EXPECT_TRUE(client2->CheckNextPacket("bizbaz", 6, &client1_addr));
EXPECT_EQ(client1_addr, bound_server_addr);
} else {
EXPECT_EQ(-1, client2->SendTo("foo", 3, bound_server_addr));
EXPECT_FALSE(client1->CheckNextPacket("foo", 3, 0));
}
}
protected:
virtual void SetUp() {
Thread::Current()->set_socketserver(ss_);
}
virtual void TearDown() {
Thread::Current()->set_socketserver(NULL);
}
VirtualSocketServer* ss_;
const SocketAddress kIPv4AnyAddress;
const SocketAddress kIPv6AnyAddress;
};
TEST_F(VirtualSocketServerTest, basic_v4) {
SocketAddress ipv4_test_addr(IPAddress(INADDR_ANY), 5000);
BasicTest(ipv4_test_addr);
}
TEST_F(VirtualSocketServerTest, basic_v6) {
SocketAddress ipv6_test_addr(IPAddress(in6addr_any), 5000);
BasicTest(ipv6_test_addr);
}
TEST_F(VirtualSocketServerTest, connect_v4) {
ConnectTest(kIPv4AnyAddress);
}
TEST_F(VirtualSocketServerTest, connect_v6) {
ConnectTest(kIPv6AnyAddress);
}
TEST_F(VirtualSocketServerTest, connect_to_non_listener_v4) {
ConnectToNonListenerTest(kIPv4AnyAddress);
}
TEST_F(VirtualSocketServerTest, connect_to_non_listener_v6) {
ConnectToNonListenerTest(kIPv6AnyAddress);
}
TEST_F(VirtualSocketServerTest, close_during_connect_v4) {
CloseDuringConnectTest(kIPv4AnyAddress);
}
TEST_F(VirtualSocketServerTest, close_during_connect_v6) {
CloseDuringConnectTest(kIPv6AnyAddress);
}
TEST_F(VirtualSocketServerTest, close_v4) {
CloseTest(kIPv4AnyAddress);
}
TEST_F(VirtualSocketServerTest, close_v6) {
CloseTest(kIPv6AnyAddress);
}
TEST_F(VirtualSocketServerTest, tcp_send_v4) {
TcpSendTest(kIPv4AnyAddress);
}
TEST_F(VirtualSocketServerTest, tcp_send_v6) {
TcpSendTest(kIPv6AnyAddress);
}
TEST_F(VirtualSocketServerTest, TcpSendsPacketsInOrder_v4) {
TcpSendsPacketsInOrderTest(kIPv4AnyAddress);
}
TEST_F(VirtualSocketServerTest, TcpSendsPacketsInOrder_v6) {
TcpSendsPacketsInOrderTest(kIPv6AnyAddress);
}
TEST_F(VirtualSocketServerTest, bandwidth_v4) {
SocketAddress ipv4_test_addr(IPAddress(INADDR_ANY), 1000);
BandwidthTest(ipv4_test_addr);
}
TEST_F(VirtualSocketServerTest, bandwidth_v6) {
SocketAddress ipv6_test_addr(IPAddress(in6addr_any), 1000);
BandwidthTest(ipv6_test_addr);
}
TEST_F(VirtualSocketServerTest, delay_v4) {
SocketAddress ipv4_test_addr(IPAddress(INADDR_ANY), 1000);
DelayTest(ipv4_test_addr);
}
TEST_F(VirtualSocketServerTest, delay_v6) {
SocketAddress ipv6_test_addr(IPAddress(in6addr_any), 1000);
DelayTest(ipv6_test_addr);
}
// Works, receiving socket sees 127.0.0.2.
TEST_F(VirtualSocketServerTest, CanConnectFromMappedIPv6ToIPv4Any) {
CrossFamilyConnectionTest(SocketAddress("::ffff:127.0.0.2", 0),
SocketAddress("0.0.0.0", 5000),
true);
}
// Fails.
TEST_F(VirtualSocketServerTest, CantConnectFromUnMappedIPv6ToIPv4Any) {
CrossFamilyConnectionTest(SocketAddress("::2", 0),
SocketAddress("0.0.0.0", 5000),
false);
}
// Fails.
TEST_F(VirtualSocketServerTest, CantConnectFromUnMappedIPv6ToMappedIPv6) {
CrossFamilyConnectionTest(SocketAddress("::2", 0),
SocketAddress("::ffff:127.0.0.1", 5000),
false);
}
// Works. receiving socket sees ::ffff:127.0.0.2.
TEST_F(VirtualSocketServerTest, CanConnectFromIPv4ToIPv6Any) {
CrossFamilyConnectionTest(SocketAddress("127.0.0.2", 0),
SocketAddress("::", 5000),
true);
}
// Fails.
TEST_F(VirtualSocketServerTest, CantConnectFromIPv4ToUnMappedIPv6) {
CrossFamilyConnectionTest(SocketAddress("127.0.0.2", 0),
SocketAddress("::1", 5000),
false);
}
// Works. Receiving socket sees ::ffff:127.0.0.1.
TEST_F(VirtualSocketServerTest, CanConnectFromIPv4ToMappedIPv6) {
CrossFamilyConnectionTest(SocketAddress("127.0.0.1", 0),
SocketAddress("::ffff:127.0.0.2", 5000),
true);
}
// Works, receiving socket sees a result from GetNextIP.
TEST_F(VirtualSocketServerTest, CanConnectFromUnboundIPv6ToIPv4Any) {
CrossFamilyConnectionTest(SocketAddress("::", 0),
SocketAddress("0.0.0.0", 5000),
true);
}
// Works, receiving socket sees whatever GetNextIP gave the client.
TEST_F(VirtualSocketServerTest, CanConnectFromUnboundIPv4ToIPv6Any) {
CrossFamilyConnectionTest(SocketAddress(),
SocketAddress("::", 5000),
true);
}
TEST_F(VirtualSocketServerTest, CanSendDatagramFromUnboundIPv4ToIPv6Any) {
CrossFamilyDatagramTest(SocketAddress(),
SocketAddress("::", 5000),
true);
}
TEST_F(VirtualSocketServerTest, CanSendDatagramFromMappedIPv6ToIPv4Any) {
CrossFamilyDatagramTest(SocketAddress("::ffff:127.0.0.1", 0),
SocketAddress("0.0.0.0", 5000),
true);
}
TEST_F(VirtualSocketServerTest, CantSendDatagramFromUnMappedIPv6ToIPv4Any) {
CrossFamilyDatagramTest(SocketAddress("::2", 0),
SocketAddress("0.0.0.0", 5000),
false);
}
TEST_F(VirtualSocketServerTest, CantSendDatagramFromUnMappedIPv6ToMappedIPv6) {
CrossFamilyDatagramTest(SocketAddress("::2", 0),
SocketAddress("::ffff:127.0.0.1", 5000),
false);
}
TEST_F(VirtualSocketServerTest, CanSendDatagramFromIPv4ToIPv6Any) {
CrossFamilyDatagramTest(SocketAddress("127.0.0.2", 0),
SocketAddress("::", 5000),
true);
}
TEST_F(VirtualSocketServerTest, CantSendDatagramFromIPv4ToUnMappedIPv6) {
CrossFamilyDatagramTest(SocketAddress("127.0.0.2", 0),
SocketAddress("::1", 5000),
false);
}
TEST_F(VirtualSocketServerTest, CanSendDatagramFromIPv4ToMappedIPv6) {
CrossFamilyDatagramTest(SocketAddress("127.0.0.1", 0),
SocketAddress("::ffff:127.0.0.2", 5000),
true);
}
TEST_F(VirtualSocketServerTest, CanSendDatagramFromUnboundIPv6ToIPv4Any) {
CrossFamilyDatagramTest(SocketAddress("::", 0),
SocketAddress("0.0.0.0", 5000),
true);
}
TEST_F(VirtualSocketServerTest, CreatesStandardDistribution) {
const uint32 kTestMean[] = { 10, 100, 333, 1000 };
const double kTestDev[] = { 0.25, 0.1, 0.01 };
// TODO: The current code only works for 1000 data points or more.
const uint32 kTestSamples[] = { /*10, 100,*/ 1000 };
for (size_t midx = 0; midx < ARRAY_SIZE(kTestMean); ++midx) {
for (size_t didx = 0; didx < ARRAY_SIZE(kTestDev); ++didx) {
for (size_t sidx = 0; sidx < ARRAY_SIZE(kTestSamples); ++sidx) {
ASSERT_LT(0u, kTestSamples[sidx]);
const uint32 kStdDev =
static_cast<uint32>(kTestDev[didx] * kTestMean[midx]);
VirtualSocketServer::Function* f =
VirtualSocketServer::CreateDistribution(kTestMean[midx],
kStdDev,
kTestSamples[sidx]);
ASSERT_TRUE(NULL != f);
ASSERT_EQ(kTestSamples[sidx], f->size());
double sum = 0;
for (uint32 i = 0; i < f->size(); ++i) {
sum += (*f)[i].second;
}
const double mean = sum / f->size();
double sum_sq_dev = 0;
for (uint32 i = 0; i < f->size(); ++i) {
double dev = (*f)[i].second - mean;
sum_sq_dev += dev * dev;
}
const double stddev = std::sqrt(sum_sq_dev / f->size());
EXPECT_NEAR(kTestMean[midx], mean, 0.1 * kTestMean[midx])
<< "M=" << kTestMean[midx]
<< " SD=" << kStdDev
<< " N=" << kTestSamples[sidx];
EXPECT_NEAR(kStdDev, stddev, 0.1 * kStdDev)
<< "M=" << kTestMean[midx]
<< " SD=" << kStdDev
<< " N=" << kTestSamples[sidx];
delete f;
}
}
}
}