From f4a48aa91f6d67a3003dd2a7ef82ff8c06f2f3de Mon Sep 17 00:00:00 2001
From: Neil Cook <neil.cook@noware.co.uk>
Date: Tue, 25 May 2021 10:54:26 +0100
Subject: [PATCH] Add key-value metadata fields

---
 dnsmessage.proto | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/dnsmessage.proto b/dnsmessage.proto
index 66924f45..a3f4716f 100644
--- a/dnsmessage.proto
+++ b/dnsmessage.proto
@@ -96,6 +96,17 @@ message PBDNSMessage {
   optional string deviceName = 19;              // Device name of the requestor
   optional uint32 fromPort = 20;                // Source port of the DNS query (client)
   optional uint32 toPort = 21;                  // Destination port of the DNS query (server)
+
+  message MetaValue {
+    repeated string stringVal = 1;
+    repeated int64 intVal = 2;
+  }
+
+  message Meta {
+    required string key = 1;                    // MUST be unique, so if you have multiple values they must be aggregated into on Meta
+    required MetaValue value = 2;
+  }
+  repeated Meta meta = 22;                      // Arbitrary meta-data - to be used in future rather than adding new fields all the time
 }
 
 message PBDNSMessageList {