Bind a socket to a network if the network handle is set.

webrtc/base/physicalsocketserver.cc

Index: webrtc/base/physicalsocketserver.cc
diff --git a/webrtc/base/physicalsocketserver.cc b/webrtc/base/physicalsocketserver.cc
index 3e454527ca80f3e86282d129cdb403fc5b5c5370..67fbea0a2fc60bacd5b2711b62e0947888ca30cc 100644
--- a/webrtc/base/physicalsocketserver.cc
+++ b/webrtc/base/physicalsocketserver.cc
@@ -7,6 +7,7 @@
  *  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/physicalsocketserver.h"
 
 #if defined(_MSC_VER) && _MSC_VER < 1300
 #pragma warning(disable:4786)
@@ -44,7 +45,7 @@
 #include "webrtc/base/byteorder.h"
 #include "webrtc/base/common.h"
 #include "webrtc/base/logging.h"
-#include "webrtc/base/physicalsocketserver.h"
+#include "webrtc/base/networkmonitor.h"
 #include "webrtc/base/timeutils.h"
 #include "webrtc/base/winping.h"
 #include "webrtc/base/win32socketinit.h"
@@ -174,6 +175,14 @@ int PhysicalSocket::Bind(const SocketAddress& bind_addr) {
     dbg_addr_.append(GetLocalAddress().ToString());
   }
 #endif
+  if (ss_->network_binder()) {
+    int result =
+        ss_->network_binder()->BindSocketToNetwork(s_, bind_addr.ipaddr());
+    if (result < 0) {
+      LOG(LS_INFO) << "Binding socket to network address "
+                   << bind_addr.ipaddr().ToString() << " result " << result;
+    }
+  }
   return err;
 }
 
@@ -1109,7 +1118,7 @@ private:
   PhysicalSocketServer* ss_;
   WSAEVENT hev_;
 };
-#endif  // WEBRTC_WIN 
+#endif  // WEBRTC_WIN
 
 // Sets the value of a boolean value to false when signaled.
 class Signaler : public EventDispatcher {
@@ -1603,6 +1612,6 @@ bool PhysicalSocketServer::Wait(int cmsWait, bool process_io) {
   // Done
   return true;
 }
-#endif  // WEBRTC_WIN 
+#endif  // WEBRTC_WIN
 
 }  // namespace rtc