Report a peer address over IPv4 as IPv4.

tests/standalone/io/socket_info_ipv4_test.dart

Index: tests/standalone/io/socket_info_ipv4_test.dart
diff --git a/tests/standalone/io/socket_info_test.dart b/tests/standalone/io/socket_info_ipv4_test.dart
similarity index 81%
copy from tests/standalone/io/socket_info_test.dart
copy to tests/standalone/io/socket_info_ipv4_test.dart
index eb14246bc618a35db6cad794d2fe5c205bc553be..f8d63bdd0a05e6840782a9fb8295ba44bba4e1a2 100644
--- a/tests/standalone/io/socket_info_test.dart
+++ b/tests/standalone/io/socket_info_ipv4_test.dart
@@ -14,7 +14,11 @@ void testHostAndPort() {
         Expect.equals(clientSocket.port, socket.remotePort);
         Expect.equals(clientSocket.remotePort, socket.port);
         Expect.equals(socket.remoteAddress.address, "127.0.0.1");
+        Expect.equals(socket.remoteAddress.type,
+                      InternetAddressType.IP_V4);
         Expect.equals(clientSocket.remoteAddress.address, "127.0.0.1");
+        Expect.equals(clientSocket.remoteAddress.type,
+                      InternetAddressType.IP_V4);
         socket.destroy();
         clientSocket.destroy();
         server.close();