diff --git a/modules/beast_asio/handshake/beast_InputParser.h b/modules/beast_asio/handshake/beast_InputParser.h
index 3c5f31fee2..fb19516994 100644
--- a/modules/beast_asio/handshake/beast_InputParser.h
+++ b/modules/beast_asio/handshake/beast_InputParser.h
@@ -339,6 +339,14 @@ struct Get <UInt8Str>
 struct IPv4Address
 {
     uint8 value [4];
+
+    String toString () const
+    {
+        return String::fromNumber <int> (value [0]) + "." +
+               String::fromNumber <int> (value [1]) + "." +
+               String::fromNumber <int> (value [2]) + "." +
+               String::fromNumber <int> (value [3]);
+    }
 };
 
 template <>