Adds a modified copy of talk/base to webrtc/base. It is the first step in migrating talk/base to webrtc/base.

BUG=N/A R=andrew@webrtc.org, wu@webrtc.org Review URL: https://webrtc-codereview.appspot.com/12199004 git-svn-id: http://webrtc.googlecode.com/svn/trunk@6107 4adac7df-926f-26a2-2b94-8c16560cd09d
2014-05-12 18:03:09 +00:00
parent f3a5e6afc4
commit 2c7d1b39b9
386 changed files with 84973 additions and 6 deletions
--- a/webrtc/base/nat_unittest.cc
+++ b/webrtc/base/nat_unittest.cc
@ -0,0 +1,345 @@
+/*
+ *  Copyright 2004 The WebRTC Project Authors. All rights reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include <string>
+
+#include "webrtc/base/gunit.h"
+#include "webrtc/base/logging.h"
+#include "webrtc/base/natserver.h"
+#include "webrtc/base/natsocketfactory.h"
+#include "webrtc/base/nethelpers.h"
+#include "webrtc/base/network.h"
+#include "webrtc/base/physicalsocketserver.h"
+#include "webrtc/base/testclient.h"
+#include "webrtc/base/virtualsocketserver.h"
+
+using namespace rtc;
+
+bool CheckReceive(
+    TestClient* client, bool should_receive, const char* buf, size_t size) {
+  return (should_receive) ?
+      client->CheckNextPacket(buf, size, 0) :
+      client->CheckNoPacket();
+}
+
+TestClient* CreateTestClient(
+      SocketFactory* factory, const SocketAddress& local_addr) {
+  AsyncUDPSocket* socket = AsyncUDPSocket::Create(factory, local_addr);
+  return new TestClient(socket);
+}
+
+// Tests that when sending from internal_addr to external_addrs through the
+// NAT type specified by nat_type, all external addrs receive the sent packet
+// and, if exp_same is true, all use the same mapped-address on the NAT.
+void TestSend(
+      SocketServer* internal, const SocketAddress& internal_addr,
+      SocketServer* external, const SocketAddress external_addrs[4],
+      NATType nat_type, bool exp_same) {
+  Thread th_int(internal);
+  Thread th_ext(external);
+
+  SocketAddress server_addr = internal_addr;
+  server_addr.SetPort(0);  // Auto-select a port
+  NATServer* nat = new NATServer(
+      nat_type, internal, server_addr, external, external_addrs[0]);
+  NATSocketFactory* natsf = new NATSocketFactory(internal,
+                                                 nat->internal_address());
+
+  TestClient* in = CreateTestClient(natsf, internal_addr);
+  TestClient* out[4];
+  for (int i = 0; i < 4; i++)
+    out[i] = CreateTestClient(external, external_addrs[i]);
+
+  th_int.Start();
+  th_ext.Start();
+
+  const char* buf = "filter_test";
+  size_t len = strlen(buf);
+
+  in->SendTo(buf, len, out[0]->address());
+  SocketAddress trans_addr;
+  EXPECT_TRUE(out[0]->CheckNextPacket(buf, len, &trans_addr));
+
+  for (int i = 1; i < 4; i++) {
+    in->SendTo(buf, len, out[i]->address());
+    SocketAddress trans_addr2;
+    EXPECT_TRUE(out[i]->CheckNextPacket(buf, len, &trans_addr2));
+    bool are_same = (trans_addr == trans_addr2);
+    ASSERT_EQ(are_same, exp_same) << "same translated address";
+    ASSERT_NE(AF_UNSPEC, trans_addr.family());
+    ASSERT_NE(AF_UNSPEC, trans_addr2.family());
+  }
+
+  th_int.Stop();
+  th_ext.Stop();
+
+  delete nat;
+  delete natsf;
+  delete in;
+  for (int i = 0; i < 4; i++)
+    delete out[i];
+}
+
+// Tests that when sending from external_addrs to internal_addr, the packet
+// is delivered according to the specified filter_ip and filter_port rules.
+void TestRecv(
+      SocketServer* internal, const SocketAddress& internal_addr,
+      SocketServer* external, const SocketAddress external_addrs[4],
+      NATType nat_type, bool filter_ip, bool filter_port) {
+  Thread th_int(internal);
+  Thread th_ext(external);
+
+  SocketAddress server_addr = internal_addr;
+  server_addr.SetPort(0);  // Auto-select a port
+  NATServer* nat = new NATServer(
+      nat_type, internal, server_addr, external, external_addrs[0]);
+  NATSocketFactory* natsf = new NATSocketFactory(internal,
+                                                 nat->internal_address());
+
+  TestClient* in = CreateTestClient(natsf, internal_addr);
+  TestClient* out[4];
+  for (int i = 0; i < 4; i++)
+    out[i] = CreateTestClient(external, external_addrs[i]);
+
+  th_int.Start();
+  th_ext.Start();
+
+  const char* buf = "filter_test";
+  size_t len = strlen(buf);
+
+  in->SendTo(buf, len, out[0]->address());
+  SocketAddress trans_addr;
+  EXPECT_TRUE(out[0]->CheckNextPacket(buf, len, &trans_addr));
+
+  out[1]->SendTo(buf, len, trans_addr);
+  EXPECT_TRUE(CheckReceive(in, !filter_ip, buf, len));
+
+  out[2]->SendTo(buf, len, trans_addr);
+  EXPECT_TRUE(CheckReceive(in, !filter_port, buf, len));
+
+  out[3]->SendTo(buf, len, trans_addr);
+  EXPECT_TRUE(CheckReceive(in, !filter_ip && !filter_port, buf, len));
+
+  th_int.Stop();
+  th_ext.Stop();
+
+  delete nat;
+  delete natsf;
+  delete in;
+  for (int i = 0; i < 4; i++)
+    delete out[i];
+}
+
+// Tests that NATServer allocates bindings properly.
+void TestBindings(
+    SocketServer* internal, const SocketAddress& internal_addr,
+    SocketServer* external, const SocketAddress external_addrs[4]) {
+  TestSend(internal, internal_addr, external, external_addrs,
+           NAT_OPEN_CONE, true);
+  TestSend(internal, internal_addr, external, external_addrs,
+           NAT_ADDR_RESTRICTED, true);
+  TestSend(internal, internal_addr, external, external_addrs,
+           NAT_PORT_RESTRICTED, true);
+  TestSend(internal, internal_addr, external, external_addrs,
+           NAT_SYMMETRIC, false);
+}
+
+// Tests that NATServer filters packets properly.
+void TestFilters(
+    SocketServer* internal, const SocketAddress& internal_addr,
+    SocketServer* external, const SocketAddress external_addrs[4]) {
+  TestRecv(internal, internal_addr, external, external_addrs,
+           NAT_OPEN_CONE, false, false);
+  TestRecv(internal, internal_addr, external, external_addrs,
+           NAT_ADDR_RESTRICTED, true, false);
+  TestRecv(internal, internal_addr, external, external_addrs,
+           NAT_PORT_RESTRICTED, true, true);
+  TestRecv(internal, internal_addr, external, external_addrs,
+           NAT_SYMMETRIC, true, true);
+}
+
+bool TestConnectivity(const SocketAddress& src, const IPAddress& dst) {
+  // The physical NAT tests require connectivity to the selected ip from the
+  // internal address used for the NAT. Things like firewalls can break that, so
+  // check to see if it's worth even trying with this ip.
+  scoped_ptr<PhysicalSocketServer> pss(new PhysicalSocketServer());
+  scoped_ptr<AsyncSocket> client(pss->CreateAsyncSocket(src.family(),
+                                                        SOCK_DGRAM));
+  scoped_ptr<AsyncSocket> server(pss->CreateAsyncSocket(src.family(),
+                                                        SOCK_DGRAM));
+  if (client->Bind(SocketAddress(src.ipaddr(), 0)) != 0 ||
+      server->Bind(SocketAddress(dst, 0)) != 0) {
+    return false;
+  }
+  const char* buf = "hello other socket";
+  size_t len = strlen(buf);
+  int sent = client->SendTo(buf, len, server->GetLocalAddress());
+  SocketAddress addr;
+  const size_t kRecvBufSize = 64;
+  char recvbuf[kRecvBufSize];
+  Thread::Current()->SleepMs(100);
+  int received = server->RecvFrom(recvbuf, kRecvBufSize, &addr);
+  return received == sent && ::memcmp(buf, recvbuf, len) == 0;
+}
+
+void TestPhysicalInternal(const SocketAddress& int_addr) {
+  BasicNetworkManager network_manager;
+  network_manager.set_ipv6_enabled(true);
+  network_manager.StartUpdating();
+  // Process pending messages so the network list is updated.
+  Thread::Current()->ProcessMessages(0);
+
+  std::vector<Network*> networks;
+  network_manager.GetNetworks(&networks);
+  if (networks.empty()) {
+    LOG(LS_WARNING) << "Not enough network adapters for test.";
+    return;
+  }
+
+  SocketAddress ext_addr1(int_addr);
+  SocketAddress ext_addr2;
+  // Find an available IP with matching family. The test breaks if int_addr
+  // can't talk to ip, so check for connectivity as well.
+  for (std::vector<Network*>::iterator it = networks.begin();
+      it != networks.end(); ++it) {
+    const IPAddress& ip = (*it)->ip();
+    if (ip.family() == int_addr.family() && TestConnectivity(int_addr, ip)) {
+      ext_addr2.SetIP(ip);
+      break;
+    }
+  }
+  if (ext_addr2.IsNil()) {
+    LOG(LS_WARNING) << "No available IP of same family as " << int_addr;
+    return;
+  }
+
+  LOG(LS_INFO) << "selected ip " << ext_addr2.ipaddr();
+
+  SocketAddress ext_addrs[4] = {
+      SocketAddress(ext_addr1),
+      SocketAddress(ext_addr2),
+      SocketAddress(ext_addr1),
+      SocketAddress(ext_addr2)
+  };
+
+  scoped_ptr<PhysicalSocketServer> int_pss(new PhysicalSocketServer());
+  scoped_ptr<PhysicalSocketServer> ext_pss(new PhysicalSocketServer());
+
+  TestBindings(int_pss.get(), int_addr, ext_pss.get(), ext_addrs);
+  TestFilters(int_pss.get(), int_addr, ext_pss.get(), ext_addrs);
+}
+
+TEST(NatTest, TestPhysicalIPv4) {
+  TestPhysicalInternal(SocketAddress("127.0.0.1", 0));
+}
+
+TEST(NatTest, TestPhysicalIPv6) {
+  if (HasIPv6Enabled()) {
+    TestPhysicalInternal(SocketAddress("::1", 0));
+  } else {
+    LOG(LS_WARNING) << "No IPv6, skipping";
+  }
+}
+
+class TestVirtualSocketServer : public VirtualSocketServer {
+ public:
+  explicit TestVirtualSocketServer(SocketServer* ss)
+      : VirtualSocketServer(ss),
+        ss_(ss) {}
+  // Expose this publicly
+  IPAddress GetNextIP(int af) { return VirtualSocketServer::GetNextIP(af); }
+
+ private:
+  scoped_ptr<SocketServer> ss_;
+};
+
+void TestVirtualInternal(int family) {
+  scoped_ptr<TestVirtualSocketServer> int_vss(new TestVirtualSocketServer(
+      new PhysicalSocketServer()));
+  scoped_ptr<TestVirtualSocketServer> ext_vss(new TestVirtualSocketServer(
+      new PhysicalSocketServer()));
+
+  SocketAddress int_addr;
+  SocketAddress ext_addrs[4];
+  int_addr.SetIP(int_vss->GetNextIP(family));
+  ext_addrs[0].SetIP(ext_vss->GetNextIP(int_addr.family()));
+  ext_addrs[1].SetIP(ext_vss->GetNextIP(int_addr.family()));
+  ext_addrs[2].SetIP(ext_addrs[0].ipaddr());
+  ext_addrs[3].SetIP(ext_addrs[1].ipaddr());
+
+  TestBindings(int_vss.get(), int_addr, ext_vss.get(), ext_addrs);
+  TestFilters(int_vss.get(), int_addr, ext_vss.get(), ext_addrs);
+}
+
+TEST(NatTest, TestVirtualIPv4) {
+  TestVirtualInternal(AF_INET);
+}
+
+TEST(NatTest, TestVirtualIPv6) {
+  if (HasIPv6Enabled()) {
+    TestVirtualInternal(AF_INET6);
+  } else {
+    LOG(LS_WARNING) << "No IPv6, skipping";
+  }
+}
+
+// TODO: Finish this test
+class NatTcpTest : public testing::Test, public sigslot::has_slots<> {
+ public:
+  NatTcpTest() : connected_(false) {}
+  virtual void SetUp() {
+    int_vss_ = new TestVirtualSocketServer(new PhysicalSocketServer());
+    ext_vss_ = new TestVirtualSocketServer(new PhysicalSocketServer());
+    nat_ = new NATServer(NAT_OPEN_CONE, int_vss_, SocketAddress(),
+                         ext_vss_, SocketAddress());
+    natsf_ = new NATSocketFactory(int_vss_, nat_->internal_address());
+  }
+  void OnConnectEvent(AsyncSocket* socket) {
+    connected_ = true;
+  }
+  void OnAcceptEvent(AsyncSocket* socket) {
+    accepted_ = server_->Accept(NULL);
+  }
+  void OnCloseEvent(AsyncSocket* socket, int error) {
+  }
+  void ConnectEvents() {
+    server_->SignalReadEvent.connect(this, &NatTcpTest::OnAcceptEvent);
+    client_->SignalConnectEvent.connect(this, &NatTcpTest::OnConnectEvent);
+  }
+  TestVirtualSocketServer* int_vss_;
+  TestVirtualSocketServer* ext_vss_;
+  NATServer* nat_;
+  NATSocketFactory* natsf_;
+  AsyncSocket* client_;
+  AsyncSocket* server_;
+  AsyncSocket* accepted_;
+  bool connected_;
+};
+
+TEST_F(NatTcpTest, DISABLED_TestConnectOut) {
+  server_ = ext_vss_->CreateAsyncSocket(SOCK_STREAM);
+  server_->Bind(SocketAddress());
+  server_->Listen(5);
+
+  client_ = int_vss_->CreateAsyncSocket(SOCK_STREAM);
+  EXPECT_GE(0, client_->Bind(SocketAddress()));
+  EXPECT_GE(0, client_->Connect(server_->GetLocalAddress()));
+
+
+  ConnectEvents();
+
+  EXPECT_TRUE_WAIT(connected_, 1000);
+  EXPECT_EQ(client_->GetRemoteAddress(), server_->GetLocalAddress());
+  EXPECT_EQ(client_->GetRemoteAddress(), accepted_->GetLocalAddress());
+  EXPECT_EQ(client_->GetLocalAddress(), accepted_->GetRemoteAddress());
+
+  client_->Close();
+}
+//#endif