blob: 0b9c2f2c5830da769200f4e135d97fae96955808 [file] [log] [blame]
/*
* Copyright 2007 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 "rtc_base/socket.h"
#include <errno.h>
#include <stdint.h>
#include <string.h>
#include <memory>
#include "absl/memory/memory.h"
#include "absl/strings/string_view.h"
#include "rtc_base/arraysize.h"
#include "rtc_base/async_packet_socket.h"
#include "rtc_base/async_udp_socket.h"
#include "rtc_base/buffer.h"
#include "rtc_base/gunit.h"
#include "rtc_base/location.h"
#include "rtc_base/logging.h"
#include "rtc_base/message_handler.h"
#include "rtc_base/net_helpers.h"
#include "rtc_base/socket_address.h"
#include "rtc_base/socket_server.h"
#include "rtc_base/socket_unittest.h"
#include "rtc_base/test_client.h"
#include "rtc_base/test_utils.h"
#include "rtc_base/third_party/sigslot/sigslot.h"
#include "rtc_base/thread.h"
#include "rtc_base/time_utils.h"
namespace rtc {
using webrtc::testing::SSE_CLOSE;
using webrtc::testing::SSE_ERROR;
using webrtc::testing::SSE_OPEN;
using webrtc::testing::SSE_READ;
using webrtc::testing::SSE_WRITE;
using webrtc::testing::StreamSink;
#define MAYBE_SKIP_IPV6 \
if (!HasIPv6Enabled()) { \
RTC_LOG(LS_INFO) << "No IPv6... skipping"; \
return; \
}
// Data size to be used in TcpInternal tests.
static const size_t kTcpInternalDataSize = 1024 * 1024; // bytes
void SocketTest::TestConnectIPv4() {
ConnectInternal(kIPv4Loopback);
}
void SocketTest::TestConnectIPv6() {
MAYBE_SKIP_IPV6;
ConnectInternal(kIPv6Loopback);
}
void SocketTest::TestConnectWithDnsLookupIPv4() {
ConnectWithDnsLookupInternal(kIPv4Loopback, "localhost");
}
void SocketTest::TestConnectWithDnsLookupIPv6() {
// TODO: Enable this when DNS resolution supports IPv6.
RTC_LOG(LS_INFO) << "Skipping IPv6 DNS test";
// ConnectWithDnsLookupInternal(kIPv6Loopback, "localhost6");
}
void SocketTest::TestConnectFailIPv4() {
ConnectFailInternal(kIPv4Loopback);
}
void SocketTest::TestConnectFailIPv6() {
MAYBE_SKIP_IPV6;
ConnectFailInternal(kIPv6Loopback);
}
void SocketTest::TestConnectWithDnsLookupFailIPv4() {
ConnectWithDnsLookupFailInternal(kIPv4Loopback);
}
void SocketTest::TestConnectWithDnsLookupFailIPv6() {
MAYBE_SKIP_IPV6;
ConnectWithDnsLookupFailInternal(kIPv6Loopback);
}
void SocketTest::TestConnectWithClosedSocketIPv4() {
ConnectWithClosedSocketInternal(kIPv4Loopback);
}
void SocketTest::TestConnectWithClosedSocketIPv6() {
MAYBE_SKIP_IPV6;
ConnectWithClosedSocketInternal(kIPv6Loopback);
}
void SocketTest::TestConnectWhileNotClosedIPv4() {
ConnectWhileNotClosedInternal(kIPv4Loopback);
}
void SocketTest::TestConnectWhileNotClosedIPv6() {
MAYBE_SKIP_IPV6;
ConnectWhileNotClosedInternal(kIPv6Loopback);
}
void SocketTest::TestServerCloseDuringConnectIPv4() {
ServerCloseDuringConnectInternal(kIPv4Loopback);
}
void SocketTest::TestServerCloseDuringConnectIPv6() {
MAYBE_SKIP_IPV6;
ServerCloseDuringConnectInternal(kIPv6Loopback);
}
void SocketTest::TestClientCloseDuringConnectIPv4() {
ClientCloseDuringConnectInternal(kIPv4Loopback);
}
void SocketTest::TestClientCloseDuringConnectIPv6() {
MAYBE_SKIP_IPV6;
ClientCloseDuringConnectInternal(kIPv6Loopback);
}
void SocketTest::TestServerCloseIPv4() {
ServerCloseInternal(kIPv4Loopback);
}
void SocketTest::TestServerCloseIPv6() {
MAYBE_SKIP_IPV6;
ServerCloseInternal(kIPv6Loopback);
}
void SocketTest::TestCloseInClosedCallbackIPv4() {
CloseInClosedCallbackInternal(kIPv4Loopback);
}
void SocketTest::TestCloseInClosedCallbackIPv6() {
MAYBE_SKIP_IPV6;
CloseInClosedCallbackInternal(kIPv6Loopback);
}
void SocketTest::TestDeleteInReadCallbackIPv4() {
DeleteInReadCallbackInternal(kIPv4Loopback);
}
void SocketTest::TestDeleteInReadCallbackIPv6() {
MAYBE_SKIP_IPV6;
DeleteInReadCallbackInternal(kIPv6Loopback);
}
void SocketTest::TestSocketServerWaitIPv4() {
SocketServerWaitInternal(kIPv4Loopback);
}
void SocketTest::TestSocketServerWaitIPv6() {
MAYBE_SKIP_IPV6;
SocketServerWaitInternal(kIPv6Loopback);
}
void SocketTest::TestTcpIPv4() {
TcpInternal(kIPv4Loopback, kTcpInternalDataSize, -1);
}
void SocketTest::TestTcpIPv6() {
MAYBE_SKIP_IPV6;
TcpInternal(kIPv6Loopback, kTcpInternalDataSize, -1);
}
void SocketTest::TestSingleFlowControlCallbackIPv4() {
SingleFlowControlCallbackInternal(kIPv4Loopback);
}
void SocketTest::TestSingleFlowControlCallbackIPv6() {
MAYBE_SKIP_IPV6;
SingleFlowControlCallbackInternal(kIPv6Loopback);
}
void SocketTest::TestUdpIPv4() {
UdpInternal(kIPv4Loopback);
}
void SocketTest::TestUdpIPv6() {
MAYBE_SKIP_IPV6;
UdpInternal(kIPv6Loopback);
}
void SocketTest::TestUdpReadyToSendIPv4() {
#if !defined(WEBRTC_MAC)
// TODO(ronghuawu): Enable this test on mac/ios.
UdpReadyToSend(kIPv4Loopback);
#endif
}
void SocketTest::TestUdpReadyToSendIPv6() {
#if defined(WEBRTC_WIN)
// TODO(ronghuawu): Enable this test (currently flakey) on mac and linux.
MAYBE_SKIP_IPV6;
UdpReadyToSend(kIPv6Loopback);
#endif
}
void SocketTest::TestGetSetOptionsIPv4() {
GetSetOptionsInternal(kIPv4Loopback);
}
void SocketTest::TestGetSetOptionsIPv6() {
MAYBE_SKIP_IPV6;
GetSetOptionsInternal(kIPv6Loopback);
}
void SocketTest::TestSocketRecvTimestampIPv4() {
SocketRecvTimestamp(kIPv4Loopback);
}
void SocketTest::TestSocketRecvTimestampIPv6() {
MAYBE_SKIP_IPV6;
SocketRecvTimestamp(kIPv6Loopback);
}
// For unbound sockets, GetLocalAddress / GetRemoteAddress return AF_UNSPEC
// values on Windows, but an empty address of the same family on Linux/MacOS X.
bool IsUnspecOrEmptyIP(const IPAddress& address) {
#if !defined(WEBRTC_WIN)
return IPIsAny(address);
#else
return address.family() == AF_UNSPEC;
#endif
}
void SocketTest::ConnectInternal(const IPAddress& loopback) {
StreamSink sink;
SocketAddress accept_addr;
// Create client.
std::unique_ptr<Socket> client(
socket_factory_->CreateSocket(loopback.family(), SOCK_STREAM));
sink.Monitor(client.get());
EXPECT_EQ(Socket::CS_CLOSED, client->GetState());
EXPECT_TRUE(IsUnspecOrEmptyIP(client->GetLocalAddress().ipaddr()));
// Create server and listen.
std::unique_ptr<Socket> server(
socket_factory_->CreateSocket(loopback.family(), SOCK_STREAM));
sink.Monitor(server.get());
EXPECT_EQ(0, server->Bind(SocketAddress(loopback, 0)));
EXPECT_EQ(0, server->Listen(5));
EXPECT_EQ(Socket::CS_CONNECTING, server->GetState());
// Ensure no pending server connections, since we haven't done anything yet.
EXPECT_FALSE(sink.Check(server.get(), SSE_READ));
EXPECT_TRUE(nullptr == server->Accept(&accept_addr));
EXPECT_TRUE(accept_addr.IsNil());
// Attempt connect to listening socket.
EXPECT_EQ(0, client->Connect(server->GetLocalAddress()));
EXPECT_FALSE(client->GetLocalAddress().IsNil());
EXPECT_NE(server->GetLocalAddress(), client->GetLocalAddress());
// Client is connecting, outcome not yet determined.
EXPECT_EQ(Socket::CS_CONNECTING, client->GetState());
EXPECT_FALSE(sink.Check(client.get(), SSE_OPEN));
EXPECT_FALSE(sink.Check(client.get(), SSE_CLOSE));
// Server has pending connection, accept it.
EXPECT_TRUE_WAIT((sink.Check(server.get(), SSE_READ)), kTimeout);
std::unique_ptr<Socket> accepted(server->Accept(&accept_addr));
ASSERT_TRUE(accepted);
EXPECT_FALSE(accept_addr.IsNil());
EXPECT_EQ(accepted->GetRemoteAddress(), accept_addr);
// Connected from server perspective, check the addresses are correct.
EXPECT_EQ(Socket::CS_CONNECTED, accepted->GetState());
EXPECT_EQ(server->GetLocalAddress(), accepted->GetLocalAddress());
EXPECT_EQ(client->GetLocalAddress(), accepted->GetRemoteAddress());
// Connected from client perspective, check the addresses are correct.
EXPECT_EQ_WAIT(Socket::CS_CONNECTED, client->GetState(), kTimeout);
EXPECT_TRUE(sink.Check(client.get(), SSE_OPEN));
EXPECT_FALSE(sink.Check(client.get(), SSE_CLOSE));
EXPECT_EQ(client->GetRemoteAddress(), server->GetLocalAddress());
EXPECT_EQ(client->GetRemoteAddress(), accepted->GetLocalAddress());
}
void SocketTest::ConnectWithDnsLookupInternal(const IPAddress& loopback,
absl::string_view host) {
StreamSink sink;
SocketAddress accept_addr;
// Create client.
std::unique_ptr<Socket> client(
socket_factory_->CreateSocket(loopback.family(), SOCK_STREAM));
sink.Monitor(client.get());
// Create server and listen.
std::unique_ptr<Socket> server(
socket_factory_->CreateSocket(loopback.family(), SOCK_STREAM));
sink.Monitor(server.get());
EXPECT_EQ(0, server->Bind(SocketAddress(loopback, 0)));
EXPECT_EQ(0, server->Listen(5));
// Attempt connect to listening socket.
SocketAddress dns_addr(server->GetLocalAddress());
dns_addr.SetIP(host);
EXPECT_EQ(0, client->Connect(dns_addr));
// TODO: Bind when doing DNS lookup.
// EXPECT_NE(kEmptyAddr, client->GetLocalAddress()); // Implicit Bind
// Client is connecting, outcome not yet determined.
EXPECT_EQ(Socket::CS_CONNECTING, client->GetState());
EXPECT_FALSE(sink.Check(client.get(), SSE_OPEN));
EXPECT_FALSE(sink.Check(client.get(), SSE_CLOSE));
// Server has pending connection, accept it.
EXPECT_TRUE_WAIT((sink.Check(server.get(), SSE_READ)), kTimeout);
std::unique_ptr<Socket> accepted(server->Accept(&accept_addr));
ASSERT_TRUE(accepted);
EXPECT_FALSE(accept_addr.IsNil());
EXPECT_EQ(accepted->GetRemoteAddress(), accept_addr);
// Connected from server perspective, check the addresses are correct.
EXPECT_EQ(Socket::CS_CONNECTED, accepted->GetState());
EXPECT_EQ(server->GetLocalAddress(), accepted->GetLocalAddress());
EXPECT_EQ(client->GetLocalAddress(), accepted->GetRemoteAddress());
// Connected from client perspective, check the addresses are correct.
EXPECT_EQ_WAIT(Socket::CS_CONNECTED, client->GetState(), kTimeout);
EXPECT_TRUE(sink.Check(client.get(), SSE_OPEN));
EXPECT_FALSE(sink.Check(client.get(), SSE_CLOSE));
EXPECT_EQ(client->GetRemoteAddress(), server->GetLocalAddress());
EXPECT_EQ(client->GetRemoteAddress(), accepted->GetLocalAddress());
}
void SocketTest::ConnectFailInternal(const IPAddress& loopback) {
StreamSink sink;
SocketAddress accept_addr;
// Create client.
std::unique_ptr<Socket> client(
socket_factory_->CreateSocket(loopback.family(), SOCK_STREAM));
sink.Monitor(client.get());
// Create server, but don't listen yet.
std::unique_ptr<Socket> server(
socket_factory_->CreateSocket(loopback.family(), SOCK_STREAM));
sink.Monitor(server.get());
EXPECT_EQ(0, server->Bind(SocketAddress(loopback, 0)));
// Attempt connect to a non-existent socket.
// We don't connect to the server socket created above, since on
// MacOS it takes about 75 seconds to get back an error!
SocketAddress bogus_addr(loopback, 65535);
EXPECT_EQ(0, client->Connect(bogus_addr));
// Wait for connection to fail (ECONNREFUSED).
EXPECT_EQ_WAIT(Socket::CS_CLOSED, client->GetState(), kTimeout);
EXPECT_FALSE(sink.Check(client.get(), SSE_OPEN));
EXPECT_TRUE(sink.Check(client.get(), SSE_ERROR));
EXPECT_TRUE(client->GetRemoteAddress().IsNil());
// Should be no pending server connections.
EXPECT_FALSE(sink.Check(server.get(), SSE_READ));
EXPECT_TRUE(nullptr == server->Accept(&accept_addr));
EXPECT_EQ(IPAddress(), accept_addr.ipaddr());
}
void SocketTest::ConnectWithDnsLookupFailInternal(const IPAddress& loopback) {
StreamSink sink;
SocketAddress accept_addr;
// Create client.
std::unique_ptr<Socket> client(
socket_factory_->CreateSocket(loopback.family(), SOCK_STREAM));
sink.Monitor(client.get());
// Create server, but don't listen yet.
std::unique_ptr<Socket> server(
socket_factory_->CreateSocket(loopback.family(), SOCK_STREAM));
sink.Monitor(server.get());
EXPECT_EQ(0, server->Bind(SocketAddress(loopback, 0)));
// Attempt connect to a non-existent host.
// We don't connect to the server socket created above, since on
// MacOS it takes about 75 seconds to get back an error!
SocketAddress bogus_dns_addr("not-a-real-hostname", 65535);
EXPECT_EQ(0, client->Connect(bogus_dns_addr));
// Wait for connection to fail (EHOSTNOTFOUND).
bool dns_lookup_finished = false;
WAIT_(client->GetState() == Socket::CS_CLOSED, kTimeout, dns_lookup_finished);
if (!dns_lookup_finished) {
RTC_LOG(LS_WARNING) << "Skipping test; DNS resolution took longer than 5 "
"seconds.";
return;
}
EXPECT_EQ_WAIT(Socket::CS_CLOSED, client->GetState(), kTimeout);
EXPECT_FALSE(sink.Check(client.get(), SSE_OPEN));
EXPECT_TRUE(sink.Check(client.get(), SSE_ERROR));
EXPECT_TRUE(client->GetRemoteAddress().IsNil());
// Should be no pending server connections.
EXPECT_FALSE(sink.Check(server.get(), SSE_READ));
EXPECT_TRUE(nullptr == server->Accept(&accept_addr));
EXPECT_TRUE(accept_addr.IsNil());
}
void SocketTest::ConnectWithClosedSocketInternal(const IPAddress& loopback) {
// Create server and listen.
std::unique_ptr<Socket> server(
socket_factory_->CreateSocket(loopback.family(), SOCK_STREAM));
EXPECT_EQ(0, server->Bind(SocketAddress(loopback, 0)));
EXPECT_EQ(0, server->Listen(5));
// Create a client and put in to CS_CLOSED state.
std::unique_ptr<Socket> client(
socket_factory_->CreateSocket(loopback.family(), SOCK_STREAM));
EXPECT_EQ(0, client->Close());
EXPECT_EQ(Socket::CS_CLOSED, client->GetState());
// Connect() should reinitialize the socket, and put it in to CS_CONNECTING.
EXPECT_EQ(0, client->Connect(SocketAddress(server->GetLocalAddress())));
EXPECT_EQ(Socket::CS_CONNECTING, client->GetState());
}
void SocketTest::ConnectWhileNotClosedInternal(const IPAddress& loopback) {
// Create server and listen.
StreamSink sink;
std::unique_ptr<Socket> server(
socket_factory_->CreateSocket(loopback.family(), SOCK_STREAM));
sink.Monitor(server.get());
EXPECT_EQ(0, server->Bind(SocketAddress(loopback, 0)));
EXPECT_EQ(0, server->Listen(5));
// Create client, connect.
std::unique_ptr<Socket> client(
socket_factory_->CreateSocket(loopback.family(), SOCK_STREAM));
EXPECT_EQ(0, client->Connect(SocketAddress(server->GetLocalAddress())));
EXPECT_EQ(Socket::CS_CONNECTING, client->GetState());
// Try to connect again. Should fail, but not interfere with original attempt.
EXPECT_EQ(SOCKET_ERROR,
client->Connect(SocketAddress(server->GetLocalAddress())));
// Accept the original connection.
SocketAddress accept_addr;
EXPECT_TRUE_WAIT((sink.Check(server.get(), SSE_READ)), kTimeout);
std::unique_ptr<Socket> accepted(server->Accept(&accept_addr));
ASSERT_TRUE(accepted);
EXPECT_FALSE(accept_addr.IsNil());
// Check the states and addresses.
EXPECT_EQ(Socket::CS_CONNECTED, accepted->GetState());
EXPECT_EQ(server->GetLocalAddress(), accepted->GetLocalAddress());
EXPECT_EQ(client->GetLocalAddress(), accepted->GetRemoteAddress());
EXPECT_EQ_WAIT(Socket::CS_CONNECTED, client->GetState(), kTimeout);
EXPECT_EQ(client->GetRemoteAddress(), server->GetLocalAddress());
EXPECT_EQ(client->GetRemoteAddress(), accepted->GetLocalAddress());
// Try to connect again, to an unresolved hostname.
// Shouldn't break anything.
EXPECT_EQ(SOCKET_ERROR, client->Connect(SocketAddress(
"localhost", server->GetLocalAddress().port())));
EXPECT_EQ(Socket::CS_CONNECTED, accepted->GetState());
EXPECT_EQ(Socket::CS_CONNECTED, client->GetState());
EXPECT_EQ(client->GetRemoteAddress(), server->GetLocalAddress());
EXPECT_EQ(client->GetRemoteAddress(), accepted->GetLocalAddress());
}
void SocketTest::ServerCloseDuringConnectInternal(const IPAddress& loopback) {
StreamSink sink;
// Create client.
std::unique_ptr<Socket> client(
socket_factory_->CreateSocket(loopback.family(), SOCK_STREAM));
sink.Monitor(client.get());
// Create server and listen.
std::unique_ptr<Socket> server(
socket_factory_->CreateSocket(loopback.family(), SOCK_STREAM));
sink.Monitor(server.get());
EXPECT_EQ(0, server->Bind(SocketAddress(loopback, 0)));
EXPECT_EQ(0, server->Listen(5));
// Attempt connect to listening socket.
EXPECT_EQ(0, client->Connect(server->GetLocalAddress()));
// Close down the server while the socket is in the accept queue.
EXPECT_TRUE_WAIT(sink.Check(server.get(), SSE_READ), kTimeout);
server->Close();
// This should fail the connection for the client. Clean up.
EXPECT_EQ_WAIT(Socket::CS_CLOSED, client->GetState(), kTimeout);
EXPECT_TRUE(sink.Check(client.get(), SSE_ERROR));
client->Close();
}
void SocketTest::ClientCloseDuringConnectInternal(const IPAddress& loopback) {
StreamSink sink;
SocketAddress accept_addr;
// Create client.
std::unique_ptr<Socket> client(
socket_factory_->CreateSocket(loopback.family(), SOCK_STREAM));
sink.Monitor(client.get());
// Create server and listen.
std::unique_ptr<Socket> server(
socket_factory_->CreateSocket(loopback.family(), SOCK_STREAM));
sink.Monitor(server.get());
EXPECT_EQ(0, server->Bind(SocketAddress(loopback, 0)));
EXPECT_EQ(0, server->Listen(5));
// Attempt connect to listening socket.
EXPECT_EQ(0, client->Connect(server->GetLocalAddress()));
// Close down the client while the socket is in the accept queue.
EXPECT_TRUE_WAIT(sink.Check(server.get(), SSE_READ), kTimeout);
client->Close();
// The connection should still be able to be accepted.
std::unique_ptr<Socket> accepted(server->Accept(&accept_addr));
ASSERT_TRUE(accepted);
sink.Monitor(accepted.get());
EXPECT_EQ(Socket::CS_CONNECTED, accepted->GetState());
// The accepted socket should then close (possibly with err, timing-related)
EXPECT_EQ_WAIT(Socket::CS_CLOSED, accepted->GetState(), kTimeout);
EXPECT_TRUE(sink.Check(accepted.get(), SSE_CLOSE) ||
sink.Check(accepted.get(), SSE_ERROR));
// The client should not get a close event.
EXPECT_FALSE(sink.Check(client.get(), SSE_CLOSE));
}
void SocketTest::ServerCloseInternal(const IPAddress& loopback) {
StreamSink sink;
SocketAddress accept_addr;
// Create client.
std::unique_ptr<Socket> client(
socket_factory_->CreateSocket(loopback.family(), SOCK_STREAM));
sink.Monitor(client.get());
// Create server and listen.
std::unique_ptr<Socket> server(
socket_factory_->CreateSocket(loopback.family(), SOCK_STREAM));
sink.Monitor(server.get());
EXPECT_EQ(0, server->Bind(SocketAddress(loopback, 0)));
EXPECT_EQ(0, server->Listen(5));
// Attempt connection.
EXPECT_EQ(0, client->Connect(server->GetLocalAddress()));
// Accept connection.
EXPECT_TRUE_WAIT((sink.Check(server.get(), SSE_READ)), kTimeout);
std::unique_ptr<Socket> accepted(server->Accept(&accept_addr));
ASSERT_TRUE(accepted);
sink.Monitor(accepted.get());
// Both sides are now connected.
EXPECT_EQ_WAIT(Socket::CS_CONNECTED, client->GetState(), kTimeout);
EXPECT_TRUE(sink.Check(client.get(), SSE_OPEN));
EXPECT_EQ(client->GetRemoteAddress(), accepted->GetLocalAddress());
EXPECT_EQ(accepted->GetRemoteAddress(), client->GetLocalAddress());
// Send data to the client, and then close the connection.
EXPECT_EQ(1, accepted->Send("a", 1));
accepted->Close();
EXPECT_EQ(Socket::CS_CLOSED, accepted->GetState());
// Expect that the client is notified, and has not yet closed.
EXPECT_TRUE_WAIT(sink.Check(client.get(), SSE_READ), kTimeout);
EXPECT_FALSE(sink.Check(client.get(), SSE_CLOSE));
EXPECT_EQ(Socket::CS_CONNECTED, client->GetState());
// Ensure the data can be read.
char buffer[10];
EXPECT_EQ(1, client->Recv(buffer, sizeof(buffer), nullptr));
EXPECT_EQ('a', buffer[0]);
// Now we should close, but the remote address will remain.
EXPECT_EQ_WAIT(Socket::CS_CLOSED, client->GetState(), kTimeout);
EXPECT_TRUE(sink.Check(client.get(), SSE_CLOSE));
EXPECT_FALSE(client->GetRemoteAddress().IsAnyIP());
// The closer should not get a close signal.
EXPECT_FALSE(sink.Check(accepted.get(), SSE_CLOSE));
EXPECT_TRUE(accepted->GetRemoteAddress().IsNil());
// And the closee should only get a single signal.
Thread::Current()->ProcessMessages(0);
EXPECT_FALSE(sink.Check(client.get(), SSE_CLOSE));
// Close down the client and ensure all is good.
client->Close();
EXPECT_FALSE(sink.Check(client.get(), SSE_CLOSE));
EXPECT_TRUE(client->GetRemoteAddress().IsNil());
}
class SocketCloser : public sigslot::has_slots<> {
public:
void OnClose(Socket* socket, int error) {
socket->Close(); // Deleting here would blow up the vector of handlers
// for the socket's signal.
}
};
void SocketTest::CloseInClosedCallbackInternal(const IPAddress& loopback) {
StreamSink sink;
SocketCloser closer;
SocketAddress accept_addr;
// Create client.
std::unique_ptr<Socket> client(
socket_factory_->CreateSocket(loopback.family(), SOCK_STREAM));
sink.Monitor(client.get());
client->SignalCloseEvent.connect(&closer, &SocketCloser::OnClose);
// Create server and listen.
std::unique_ptr<Socket> server(
socket_factory_->CreateSocket(loopback.family(), SOCK_STREAM));
sink.Monitor(server.get());
EXPECT_EQ(0, server->Bind(SocketAddress(loopback, 0)));
EXPECT_EQ(0, server->Listen(5));
// Attempt connection.
EXPECT_EQ(0, client->Connect(server->GetLocalAddress()));
// Accept connection.
EXPECT_TRUE_WAIT((sink.Check(server.get(), SSE_READ)), kTimeout);
std::unique_ptr<Socket> accepted(server->Accept(&accept_addr));
ASSERT_TRUE(accepted);
sink.Monitor(accepted.get());
// Both sides are now connected.
EXPECT_EQ_WAIT(Socket::CS_CONNECTED, client->GetState(), kTimeout);
EXPECT_TRUE(sink.Check(client.get(), SSE_OPEN));
EXPECT_EQ(client->GetRemoteAddress(), accepted->GetLocalAddress());
EXPECT_EQ(accepted->GetRemoteAddress(), client->GetLocalAddress());
// Send data to the client, and then close the connection.
accepted->Close();
EXPECT_EQ(Socket::CS_CLOSED, accepted->GetState());
// Expect that the client is notified, and has not yet closed.
EXPECT_FALSE(sink.Check(client.get(), SSE_CLOSE));
EXPECT_EQ(Socket::CS_CONNECTED, client->GetState());
// Now we should be closed and invalidated
EXPECT_EQ_WAIT(Socket::CS_CLOSED, client->GetState(), kTimeout);
EXPECT_TRUE(sink.Check(client.get(), SSE_CLOSE));
EXPECT_TRUE(Socket::CS_CLOSED == client->GetState());
}
// Helper class specifically for the test below.
class SocketDeleter : public sigslot::has_slots<> {
public:
explicit SocketDeleter(std::unique_ptr<Socket> socket)
: socket_(std::move(socket)) {}
void Delete(Socket* other) { socket_.reset(); }
bool deleted() const { return socket_ == nullptr; }
private:
std::unique_ptr<Socket> socket_;
};
// Tested deleting a socket within another socket's read callback. A previous
// iteration of the select loop failed in this situation, if both sockets
// became readable at the same time.
void SocketTest::DeleteInReadCallbackInternal(const IPAddress& loopback) {
std::unique_ptr<Socket> socket1(
socket_factory_->CreateSocket(loopback.family(), SOCK_DGRAM));
std::unique_ptr<Socket> socket2(
socket_factory_->CreateSocket(loopback.family(), SOCK_DGRAM));
EXPECT_EQ(0, socket1->Bind(SocketAddress(loopback, 0)));
EXPECT_EQ(0, socket2->Bind(SocketAddress(loopback, 0)));
EXPECT_EQ(3, socket1->SendTo("foo", 3, socket1->GetLocalAddress()));
EXPECT_EQ(3, socket2->SendTo("bar", 3, socket1->GetLocalAddress()));
// Sleep a while to ensure sends are both completed at the same time.
Thread::SleepMs(1000);
// Configure the helper class to delete socket 2 when socket 1 has a read
// event.
SocketDeleter deleter(std::move(socket2));
socket1->SignalReadEvent.connect(&deleter, &SocketDeleter::Delete);
EXPECT_TRUE_WAIT(deleter.deleted(), kTimeout);
}
class Sleeper : public MessageHandlerAutoCleanup {
public:
void OnMessage(Message* msg) override { Thread::Current()->SleepMs(500); }
};
void SocketTest::SocketServerWaitInternal(const IPAddress& loopback) {
StreamSink sink;
SocketAddress accept_addr;
// Create & connect server and client sockets.
std::unique_ptr<Socket> client(
socket_factory_->CreateSocket(loopback.family(), SOCK_STREAM));
std::unique_ptr<Socket> server(
socket_factory_->CreateSocket(loopback.family(), SOCK_STREAM));
sink.Monitor(client.get());
sink.Monitor(server.get());
EXPECT_EQ(0, server->Bind(SocketAddress(loopback, 0)));
EXPECT_EQ(0, server->Listen(5));
EXPECT_EQ(0, client->Connect(server->GetLocalAddress()));
EXPECT_TRUE_WAIT((sink.Check(server.get(), SSE_READ)), kTimeout);
std::unique_ptr<Socket> accepted(server->Accept(&accept_addr));
ASSERT_TRUE(accepted);
sink.Monitor(accepted.get());
EXPECT_EQ(Socket::CS_CONNECTED, accepted->GetState());
EXPECT_EQ(server->GetLocalAddress(), accepted->GetLocalAddress());
EXPECT_EQ(client->GetLocalAddress(), accepted->GetRemoteAddress());
EXPECT_EQ_WAIT(Socket::CS_CONNECTED, client->GetState(), kTimeout);
EXPECT_TRUE(sink.Check(client.get(), SSE_OPEN));
EXPECT_FALSE(sink.Check(client.get(), SSE_CLOSE));
EXPECT_EQ(client->GetRemoteAddress(), server->GetLocalAddress());
EXPECT_EQ(client->GetRemoteAddress(), accepted->GetLocalAddress());
// Do an i/o operation, triggering an eventual callback.
EXPECT_FALSE(sink.Check(accepted.get(), SSE_READ));
char buf[1024] = {0};
EXPECT_EQ(1024, client->Send(buf, 1024));
EXPECT_FALSE(sink.Check(accepted.get(), SSE_READ));
// Shouldn't signal when blocked in a thread Send, where process_io is false.
std::unique_ptr<Thread> thread(Thread::CreateWithSocketServer());
thread->Start();
Sleeper sleeper;
TypedMessageData<Socket*> data(client.get());
thread->Send(RTC_FROM_HERE, &sleeper, 0, &data);
EXPECT_FALSE(sink.Check(accepted.get(), SSE_READ));
// But should signal when process_io is true.
EXPECT_TRUE_WAIT((sink.Check(accepted.get(), SSE_READ)), kTimeout);
EXPECT_LT(0, accepted->Recv(buf, 1024, nullptr));
}
void SocketTest::TcpInternal(const IPAddress& loopback,
size_t data_size,
ptrdiff_t max_send_size) {
StreamSink sink;
SocketAddress accept_addr;
// Create receiving client.
std::unique_ptr<Socket> receiver(
socket_factory_->CreateSocket(loopback.family(), SOCK_STREAM));
sink.Monitor(receiver.get());
// Create server and listen.
std::unique_ptr<Socket> server(
socket_factory_->CreateSocket(loopback.family(), SOCK_STREAM));
sink.Monitor(server.get());
EXPECT_EQ(0, server->Bind(SocketAddress(loopback, 0)));
EXPECT_EQ(0, server->Listen(5));
// Attempt connection.
EXPECT_EQ(0, receiver->Connect(server->GetLocalAddress()));
// Accept connection which will be used for sending.
EXPECT_TRUE_WAIT((sink.Check(server.get(), SSE_READ)), kTimeout);
std::unique_ptr<Socket> sender(server->Accept(&accept_addr));
ASSERT_TRUE(sender);
sink.Monitor(sender.get());
// Both sides are now connected.
EXPECT_EQ_WAIT(Socket::CS_CONNECTED, receiver->GetState(), kTimeout);
EXPECT_TRUE(sink.Check(receiver.get(), SSE_OPEN));
EXPECT_EQ(receiver->GetRemoteAddress(), sender->GetLocalAddress());
EXPECT_EQ(sender->GetRemoteAddress(), receiver->GetLocalAddress());
// Create test data.
rtc::Buffer send_buffer(0, data_size);
rtc::Buffer recv_buffer(0, data_size);
for (size_t i = 0; i < data_size; ++i) {
char ch = static_cast<char>(i % 256);
send_buffer.AppendData(&ch, sizeof(ch));
}
rtc::Buffer recved_data(0, data_size);
// Send and receive a bunch of data.
size_t sent_size = 0;
bool writable = true;
bool send_called = false;
bool readable = false;
bool recv_called = false;
while (recv_buffer.size() < send_buffer.size()) {
// Send as much as we can while we're cleared to send.
while (writable && sent_size < send_buffer.size()) {
int unsent_size = static_cast<int>(send_buffer.size() - sent_size);
int sent = sender->Send(send_buffer.data() + sent_size, unsent_size);
if (!send_called) {
// The first Send() after connecting or getting writability should
// succeed and send some data.
EXPECT_GT(sent, 0);
send_called = true;
}
if (sent >= 0) {
EXPECT_LE(sent, unsent_size);
sent_size += sent;
if (max_send_size >= 0) {
EXPECT_LE(static_cast<ptrdiff_t>(sent), max_send_size);
if (sent < unsent_size) {
// If max_send_size is limiting the amount to send per call such
// that the sent amount is less than the unsent amount, we simulate
// that the socket is no longer writable.
writable = false;
}
}
} else {
ASSERT_TRUE(sender->IsBlocking());
writable = false;
}
}
// Read all the sent data.
while (recv_buffer.size() < sent_size) {
if (!readable) {
// Wait until data is available.
EXPECT_TRUE_WAIT(sink.Check(receiver.get(), SSE_READ), kTimeout);
readable = true;
recv_called = false;
}
// Receive as much as we can get in a single recv call.
int recved_size = receiver->Recv(recved_data.data(), data_size, nullptr);
if (!recv_called) {
// The first Recv() after getting readability should succeed and receive
// some data.
// TODO: The following line is disabled due to flakey pulse
// builds. Re-enable if/when possible.
// EXPECT_GT(recved_size, 0);
recv_called = true;
}
if (recved_size >= 0) {
EXPECT_LE(static_cast<size_t>(recved_size),
sent_size - recv_buffer.size());
recv_buffer.AppendData(recved_data.data(), recved_size);
} else {
ASSERT_TRUE(receiver->IsBlocking());
readable = false;
}
}
// Once all that we've sent has been received, expect to be able to send
// again.
if (!writable) {
ASSERT_TRUE_WAIT(sink.Check(sender.get(), SSE_WRITE), kTimeout);
writable = true;
send_called = false;
}
}
// The received data matches the sent data.
EXPECT_EQ(data_size, sent_size);
EXPECT_EQ(data_size, recv_buffer.size());
EXPECT_EQ(recv_buffer, send_buffer);
// Close down.
sender->Close();
EXPECT_EQ_WAIT(Socket::CS_CLOSED, receiver->GetState(), kTimeout);
EXPECT_TRUE(sink.Check(receiver.get(), SSE_CLOSE));
receiver->Close();
}
void SocketTest::SingleFlowControlCallbackInternal(const IPAddress& loopback) {
StreamSink sink;
SocketAddress accept_addr;
// Create client.
std::unique_ptr<Socket> client(
socket_factory_->CreateSocket(loopback.family(), SOCK_STREAM));
sink.Monitor(client.get());
// Create server and listen.
std::unique_ptr<Socket> server(
socket_factory_->CreateSocket(loopback.family(), SOCK_STREAM));
sink.Monitor(server.get());
EXPECT_EQ(0, server->Bind(SocketAddress(loopback, 0)));
EXPECT_EQ(0, server->Listen(5));
// Attempt connection.
EXPECT_EQ(0, client->Connect(server->GetLocalAddress()));
// Accept connection.
EXPECT_TRUE_WAIT((sink.Check(server.get(), SSE_READ)), kTimeout);
std::unique_ptr<Socket> accepted(server->Accept(&accept_addr));
ASSERT_TRUE(accepted);
sink.Monitor(accepted.get());
// Both sides are now connected.
EXPECT_EQ_WAIT(Socket::CS_CONNECTED, client->GetState(), kTimeout);
EXPECT_TRUE(sink.Check(client.get(), SSE_OPEN));
EXPECT_EQ(client->GetRemoteAddress(), accepted->GetLocalAddress());
EXPECT_EQ(accepted->GetRemoteAddress(), client->GetLocalAddress());
// Expect a writable callback from the connect.
EXPECT_TRUE_WAIT(sink.Check(accepted.get(), SSE_WRITE), kTimeout);
// Fill the socket buffer.
char buf[1024 * 16] = {0};
int sends = 0;
while (++sends && accepted->Send(&buf, arraysize(buf)) != -1) {
}
EXPECT_TRUE(accepted->IsBlocking());
// Wait until data is available.
EXPECT_TRUE_WAIT(sink.Check(client.get(), SSE_READ), kTimeout);
// Pull data.
for (int i = 0; i < sends; ++i) {
client->Recv(buf, arraysize(buf), nullptr);
}
// Expect at least one additional writable callback.
EXPECT_TRUE_WAIT(sink.Check(accepted.get(), SSE_WRITE), kTimeout);
// Adding data in response to the writeable callback shouldn't cause infinite
// callbacks.
int extras = 0;
for (int i = 0; i < 100; ++i) {
accepted->Send(&buf, arraysize(buf));
rtc::Thread::Current()->ProcessMessages(1);
if (sink.Check(accepted.get(), SSE_WRITE)) {
extras++;
}
}
EXPECT_LT(extras, 2);
// Close down.
accepted->Close();
client->Close();
}
void SocketTest::UdpInternal(const IPAddress& loopback) {
SocketAddress empty = EmptySocketAddressWithFamily(loopback.family());
// Test basic bind and connect behavior.
Socket* socket = socket_factory_->CreateSocket(loopback.family(), SOCK_DGRAM);
EXPECT_EQ(Socket::CS_CLOSED, socket->GetState());
EXPECT_EQ(0, socket->Bind(SocketAddress(loopback, 0)));
SocketAddress addr1 = socket->GetLocalAddress();
EXPECT_EQ(0, socket->Connect(addr1));
EXPECT_EQ(Socket::CS_CONNECTED, socket->GetState());
socket->Close();
EXPECT_EQ(Socket::CS_CLOSED, socket->GetState());
delete socket;
// Test send/receive behavior.
auto client1 = std::make_unique<TestClient>(
absl::WrapUnique(AsyncUDPSocket::Create(socket_factory_, addr1)));
auto client2 = std::make_unique<TestClient>(
absl::WrapUnique(AsyncUDPSocket::Create(socket_factory_, empty)));
SocketAddress addr2;
EXPECT_EQ(3, client2->SendTo("foo", 3, addr1));
EXPECT_TRUE(client1->CheckNextPacket("foo", 3, &addr2));
SocketAddress addr3;
EXPECT_EQ(6, client1->SendTo("bizbaz", 6, addr2));
EXPECT_TRUE(client2->CheckNextPacket("bizbaz", 6, &addr3));
EXPECT_EQ(addr3, addr1);
// TODO: figure out what the intent is here
for (int i = 0; i < 10; ++i) {
client2 = std::make_unique<TestClient>(
absl::WrapUnique(AsyncUDPSocket::Create(socket_factory_, empty)));
SocketAddress addr4;
EXPECT_EQ(3, client2->SendTo("foo", 3, addr1));
EXPECT_TRUE(client1->CheckNextPacket("foo", 3, &addr4));
EXPECT_EQ(addr4.ipaddr(), addr2.ipaddr());
SocketAddress addr5;
EXPECT_EQ(6, client1->SendTo("bizbaz", 6, addr4));
EXPECT_TRUE(client2->CheckNextPacket("bizbaz", 6, &addr5));
EXPECT_EQ(addr5, addr1);
addr2 = addr4;
}
}
void SocketTest::UdpReadyToSend(const IPAddress& loopback) {
SocketAddress empty = EmptySocketAddressWithFamily(loopback.family());
// RFC 5737 - The blocks 192.0.2.0/24 (TEST-NET-1) ... are provided for use in
// documentation.
// RFC 3849 - 2001:DB8::/32 as a documentation-only prefix.
std::string dest =
(loopback.family() == AF_INET6) ? "2001:db8::1" : "192.0.2.0";
SocketAddress test_addr(dest, 2345);
// Test send
auto client = std::make_unique<TestClient>(
absl::WrapUnique(AsyncUDPSocket::Create(socket_factory_, empty)));
int test_packet_size = 1200;
std::unique_ptr<char[]> test_packet(new char[test_packet_size]);
// Init the test packet just to avoid memcheck warning.
memset(test_packet.get(), 0, test_packet_size);
// Set the send buffer size to the same size as the test packet to have a
// better chance to get EWOULDBLOCK.
int send_buffer_size = test_packet_size;
#if defined(WEBRTC_LINUX) && !defined(WEBRTC_ANDROID)
send_buffer_size /= 2;
#endif
client->SetOption(rtc::Socket::OPT_SNDBUF, send_buffer_size);
int error = 0;
uint32_t start_ms = Time();
int sent_packet_num = 0;
int expected_error = EWOULDBLOCK;
while (start_ms + kTimeout > Time()) {
int ret = client->SendTo(test_packet.get(), test_packet_size, test_addr);
++sent_packet_num;
if (ret != test_packet_size) {
error = client->GetError();
if (error == expected_error) {
RTC_LOG(LS_INFO) << "Got expected error code after sending "
<< sent_packet_num << " packets.";
break;
}
}
}
EXPECT_EQ(expected_error, error);
EXPECT_FALSE(client->ready_to_send());
EXPECT_TRUE_WAIT(client->ready_to_send(), kTimeout);
RTC_LOG(LS_INFO) << "Got SignalReadyToSend";
}
void SocketTest::GetSetOptionsInternal(const IPAddress& loopback) {
std::unique_ptr<Socket> socket(
socket_factory_->CreateSocket(loopback.family(), SOCK_DGRAM));
socket->Bind(SocketAddress(loopback, 0));
// Check SNDBUF/RCVBUF.
const int desired_size = 12345;
#if defined(WEBRTC_LINUX)
// Yes, really. It's in the kernel source.
const int expected_size = desired_size * 2;
#else // !WEBRTC_LINUX
const int expected_size = desired_size;
#endif // !WEBRTC_LINUX
int recv_size = 0;
int send_size = 0;
// get the initial sizes
ASSERT_NE(-1, socket->GetOption(Socket::OPT_RCVBUF, &recv_size));
ASSERT_NE(-1, socket->GetOption(Socket::OPT_SNDBUF, &send_size));
// set our desired sizes
ASSERT_NE(-1, socket->SetOption(Socket::OPT_RCVBUF, desired_size));
ASSERT_NE(-1, socket->SetOption(Socket::OPT_SNDBUF, desired_size));
// get the sizes again
ASSERT_NE(-1, socket->GetOption(Socket::OPT_RCVBUF, &recv_size));
ASSERT_NE(-1, socket->GetOption(Socket::OPT_SNDBUF, &send_size));
// make sure they are right
ASSERT_EQ(expected_size, recv_size);
ASSERT_EQ(expected_size, send_size);
// Check that we can't set NODELAY on a UDP socket.
int current_nd, desired_nd = 1;
ASSERT_EQ(-1, socket->GetOption(Socket::OPT_NODELAY, &current_nd));
ASSERT_EQ(-1, socket->SetOption(Socket::OPT_NODELAY, desired_nd));
#if defined(WEBRTC_POSIX)
// Check DSCP.
int current_dscp, desired_dscp = 1;
ASSERT_NE(-1, socket->GetOption(Socket::OPT_DSCP, &current_dscp));
ASSERT_NE(-1, socket->SetOption(Socket::OPT_DSCP, desired_dscp));
ASSERT_NE(-1, socket->GetOption(Socket::OPT_DSCP, &current_dscp));
ASSERT_EQ(desired_dscp, current_dscp);
#endif
}
void SocketTest::SocketRecvTimestamp(const IPAddress& loopback) {
std::unique_ptr<Socket> socket(
socket_factory_->CreateSocket(loopback.family(), SOCK_DGRAM));
EXPECT_EQ(0, socket->Bind(SocketAddress(loopback, 0)));
SocketAddress address = socket->GetLocalAddress();
int64_t send_time_1 = TimeMicros();
socket->SendTo("foo", 3, address);
int64_t recv_timestamp_1;
char buffer[3];
socket->RecvFrom(buffer, 3, nullptr, &recv_timestamp_1);
EXPECT_GT(recv_timestamp_1, -1);
const int64_t kTimeBetweenPacketsMs = 100;
Thread::SleepMs(kTimeBetweenPacketsMs);
int64_t send_time_2 = TimeMicros();
socket->SendTo("bar", 3, address);
int64_t recv_timestamp_2;
socket->RecvFrom(buffer, 3, nullptr, &recv_timestamp_2);
int64_t system_time_diff = send_time_2 - send_time_1;
int64_t recv_timestamp_diff = recv_timestamp_2 - recv_timestamp_1;
// Compare against the system time at the point of sending, because
// SleepMs may not sleep for exactly the requested time.
EXPECT_NEAR(system_time_diff, recv_timestamp_diff, 10000);
}
} // namespace rtc