Add support for default local address in IpcNetworkManager

content/renderer/p2p/ipc_network_manager.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/p2p/ipc_network_manager.h"
 
 #include <string>
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/location.h"
 #include "base/metrics/histogram.h"
 #include "base/single_thread_task_runner.h"
 #include "base/sys_byteorder.h"
 #include "base/thread_task_runner_handle.h"
 #include "content/public/common/content_switches.h"
+#include "jingle/glue/utils.h"
 #include "net/base/ip_address_number.h"
 #include "net/base/net_util.h"
 #include "net/base/network_change_notifier.h"
 #include "net/base/network_interfaces.h"
+#include "third_party/webrtc/base/socketaddress.h"
 
 namespace content {
 
 namespace {
 
 rtc::AdapterType ConvertConnectionTypeToAdapterType(
     net::NetworkChangeNotifier::ConnectionType type) {
   switch (type) {
     case net::NetworkChangeNotifier::CONNECTION_UNKNOWN:
         return rtc::ADAPTER_TYPE_UNKNOWN;
@@ skipping 34 matching lines @@
   }
   ++start_count_;
 }
 
 void IpcNetworkManager::StopUpdating() {
   DCHECK_GT(start_count_, 0);
   --start_count_;
 }
 
 void IpcNetworkManager::OnNetworkListChanged(
-    const net::NetworkInterfaceList& list) {
-
+    const net::NetworkInterfaceList& list,
+    const net::IPAddressNumber& default_ipv4_local_address,
+    const net::IPAddressNumber& default_ipv6_local_address) {
   // Update flag if network list received for the first time.
   if (!network_list_received_)
     network_list_received_ = true;
 
+  // Update the default local interfaces.
+  rtc::IPAddress ipv4;
+  jingle_glue::IPAddressNumberToIPAddress(default_ipv4_local_address, &ipv4);
+  rtc::IPAddress ipv6;
+  jingle_glue::IPAddressNumberToIPAddress(default_ipv6_local_address, &ipv6);
+  set_default_local_addresses(ipv4, ipv6);
+
   // rtc::Network uses these prefix_length to compare network
   // interfaces discovered.
   std::vector<rtc::Network*> networks;
   for (net::NetworkInterfaceList::const_iterator it = list.begin();
        it != list.end(); it++) {
+    rtc::IPAddress ip_address;
     if (it->address.size() == net::kIPv4AddressSize) {
-      uint32 address;
-      memcpy(&address, &it->address[0], sizeof(uint32));
-      address = rtc::NetworkToHost32(address);
-      rtc::IPAddress prefix =
-          rtc::TruncateIP(rtc::IPAddress(address), it->prefix_length);
+      if (!jingle_glue::IPAddressNumberToIPAddress(it->address, &ip_address))

[Sergey Ulanov, 2015/11/11 21:10:02]

This line is duplicated for ipv6 addresses below. Move this out of the if block.

+        continue;
+      rtc::IPAddress prefix = rtc::TruncateIP(ip_address, it->prefix_length);
       rtc::Network* network =
           new rtc::Network(it->name, it->name, prefix, it->prefix_length,
                            ConvertConnectionTypeToAdapterType(it->type));
-      network->AddIP(rtc::IPAddress(address));
+      network->set_default_local_address_provider(this);
+      network->AddIP(ip_address);
       networks.push_back(network);
     } else if (it->address.size() == net::kIPv6AddressSize) {
-      in6_addr address;
-      memcpy(&address, &it->address[0], sizeof(in6_addr));
-      rtc::InterfaceAddress ip6_addr(address, it->ip_address_attributes);
+      if (!jingle_glue::IPAddressNumberToIPAddress(it->address, &ip_address))
+        continue;
+      rtc::InterfaceAddress ip6_addr(ip_address, it->ip_address_attributes);
 
       // Only allow non-deprecated IPv6 addresses which don't contain MAC.
       if (rtc::IPIsMacBased(ip6_addr) ||
           (it->ip_address_attributes & net::IP_ADDRESS_ATTRIBUTE_DEPRECATED)) {
         continue;
       }
 
       if (!rtc::IPIsPrivate(ip6_addr)) {
-        rtc::IPAddress prefix =
-            rtc::TruncateIP(rtc::IPAddress(ip6_addr), it->prefix_length);
+        rtc::IPAddress prefix = rtc::TruncateIP(ip6_addr, it->prefix_length);

[Sergey Ulanov, 2015/11/11 21:10:02]

All this code (lines 118-124) is the same as for IPv4 addresses except that you
need rtc::InterfaceAddress needs to have address flags set. Move it out of the
if block. The only part here that is special for IPv6 addresses in
rtc::InterfaceAddress creation.

         rtc::Network* network =
             new rtc::Network(it->name, it->name, prefix, it->prefix_length,
                              ConvertConnectionTypeToAdapterType(it->type));
+        network->set_default_local_address_provider(this);
         network->AddIP(ip6_addr);
         networks.push_back(network);
       }
     }
   }
 
   if (base::CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kAllowLoopbackInPeerConnection)) {
     std::string name_v4("loopback_ipv4");
     rtc::IPAddress ip_address_v4(INADDR_LOOPBACK);
     rtc::Network* network_v4 = new rtc::Network(
         name_v4, name_v4, ip_address_v4, 32, rtc::ADAPTER_TYPE_UNKNOWN);
+    network_v4->set_default_local_address_provider(this);
     network_v4->AddIP(ip_address_v4);
     networks.push_back(network_v4);
 
     std::string name_v6("loopback_ipv6");
     rtc::IPAddress ip_address_v6(in6addr_loopback);
     rtc::Network* network_v6 = new rtc::Network(
         name_v6, name_v6, ip_address_v6, 64, rtc::ADAPTER_TYPE_UNKNOWN);
+    network_v6->set_default_local_address_provider(this);
     network_v6->AddIP(ip_address_v6);
     networks.push_back(network_v6);
   }
 
   bool changed = false;
   NetworkManager::Stats stats;
   MergeNetworkList(networks, &changed, &stats);
   if (changed)
     SignalNetworksChanged();
 
   // Send interface counts to UMA.
   UMA_HISTOGRAM_COUNTS_100("WebRTC.PeerConnection.IPv4Interfaces",
                            stats.ipv4_network_count);
   UMA_HISTOGRAM_COUNTS_100("WebRTC.PeerConnection.IPv6Interfaces",
                            stats.ipv6_network_count);
 }
 
 void IpcNetworkManager::SendNetworksChangedSignal() {
   SignalNetworksChanged();
 }
 
 }  // namespace content