From d241ac2136094089d60acd2262157fc6902c2161 Mon Sep 17 00:00:00 2001
From: uartnet <140632163+uartnet@users.noreply.github.com>
Date: Wed, 28 Oct 2026 15:57:01 +0100
Subject: [PATCH] chore: sync protocol 1.4.7 datagram channel negotiation

---
 src/main/proto/rstream.proto | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/main/proto/rstream.proto b/src/main/proto/rstream.proto
index 0e098cf..7d2e249 100644
--- a/src/main/proto/rstream.proto
+++ b/src/main/proto/rstream.proto
@@ -14,7 +14,7 @@ extend google.protobuf.FieldOptions {
   string access = 51234;
 }
 
-option (protocol_version) = "1.4.6";
+option (protocol_version) = "1.4.7";
 
 package rstream.io_rstrm.protobuf;
 
@@ -259,11 +259,16 @@ message StreamReq {
   string tunnel_id_name = 2;
   google.protobuf.BoolValue zero_rtt = 3;
   google.protobuf.BoolValue datagram_channel = 4;
+  // Opt in to a separate dialer routing ID; the owner still uses stream_id.
+  bool independent_datagram_channel = 5;
 }
 
 // Server's response to a 'StreamReq'. Skipped if zero_rtt option is enabled.
 
 message StreamRsp {
+  // Exactly 12 bytes when independent_datagram_channel was negotiated.
+  // The datagram prefix uses this ID; lifecycle messages keep stream_id.
+  bytes datagram_channel_id = 3;
   oneof payload {
     string stream_id = 1;
     Error error = 2;