WebRTC should generate default private address even when adapter enumeration is disabled.

webrtc/base/network_unittest.cc

 /*
  *  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 "webrtc/base/network.h"
 
+#include "webrtc/base/nethelpers.h"
 #include "webrtc/base/networkmonitor.h"
 #include <vector>
 #if defined(WEBRTC_POSIX)
 #include <sys/types.h>
 #if !defined(WEBRTC_ANDROID)
 #include <ifaddrs.h>
 #else
 #include "webrtc/base/ifaddrs-android.h"
 #endif
 #endif
@@ skipping 66 matching lines @@
                                  bool include_ignored,
                                  NetworkManager::NetworkList* networks) {
     network_manager.ConvertIfAddrs(interfaces, include_ignored, networks);
   }
 #endif  // defined(WEBRTC_POSIX)
 
  protected:
   bool callback_called_;
 };
 
+class TestBasicNetworkManager : public BasicNetworkManager {
+ public:
+  using BasicNetworkManager::QueryDefaultLocalAddress;
+};
+
 // Test that the Network ctor works properly.
 TEST_F(NetworkTest, TestNetworkConstruct) {
   Network ipv4_network1("test_eth0", "Test Network Adapter 1",
                         IPAddress(0x12345600U), 24);
   EXPECT_EQ("test_eth0", ipv4_network1.name());
   EXPECT_EQ("Test Network Adapter 1", ipv4_network1.description());
   EXPECT_EQ(IPAddress(0x12345600U), ipv4_network1.prefix());
   EXPECT_EQ(24, ipv4_network1.prefix_length());
   EXPECT_FALSE(ipv4_network1.ignored());
 }
@@ skipping 726 matching lines @@
   network_monitor->OnNetworksChanged();
   EXPECT_TRUE_WAIT(callback_called_, 1000);
 
   // Network manager is stopped; the network monitor is removed.
   manager.StopUpdating();
   EXPECT_TRUE(GetNetworkMonitor(manager) == nullptr);
 
   NetworkMonitorFactory::ReleaseFactory(factory);
 }
 
+TEST_F(NetworkTest, DefaultPrivateAddress) {
+  TestBasicNetworkManager manager;
+  manager.StartUpdating();
+  std::vector<Network*> networks;
+  manager.GetNetworks(&networks);
+  for (auto& network : networks) {
+    if (network->GetBestIP().family() == AF_INET) {
+      EXPECT_TRUE(manager.QueryDefaultLocalAddress(AF_INET) != IPAddress());
+    } else if (network->GetBestIP().family() == AF_INET6) {
+      EXPECT_TRUE(manager.QueryDefaultLocalAddress(AF_INET6) != IPAddress());
+    }
+  }
+  manager.StopUpdating();
+}
+
 }  // namespace rtc