From dab17f965fd7a0129ad5c24e4e6d40cd2ad504d7 Mon Sep 17 00:00:00 2001
From: Michael Chourdakis <chourdakismichael@gmail.com>
Date: Sun, 30 Nov 2025 11:13:20 +0200
Subject: [PATCH] Added chrome required settings for WebTransport

---
 .gitignore                     |  3 +++
 lib/includes/nghttp3/nghttp3.h |  7 +++++++
 lib/nghttp3_conn.c             | 11 +++++++++++
 lib/nghttp3_frame.h            |  3 +++
 lib/nghttp3_stream.c           | 16 ++++++++++++++++
 5 files changed, 40 insertions(+)

diff --git a/.gitignore b/.gitignore
index 0b217713..a550965b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,8 @@
 # emacs backup file
 *~
+out64/
+out32/
+inst.bat
 
 # autotools
 *.la
diff --git a/lib/includes/nghttp3/nghttp3.h b/lib/includes/nghttp3/nghttp3.h
index bba55881..a28b0ec2 100644
--- a/lib/includes/nghttp3/nghttp3.h
+++ b/lib/includes/nghttp3/nghttp3.h
@@ -1826,6 +1826,13 @@ typedef struct nghttp3_settings {
    * v1.13.0.
    */
   nghttp3_qpack_indexing_strat qpack_indexing_strat;
+
+   // Setting 0x2b603742ULL 1.14.0
+  uint64_t enable_web_transport;
+
+  // Setting 0xffd277ULL 1.14.0
+  uint64_t enable_webtransport_datagrams;
+
 } nghttp3_settings;
 
 /**
diff --git a/lib/nghttp3_conn.c b/lib/nghttp3_conn.c
index b124162b..0afcceab 100644
--- a/lib/nghttp3_conn.c
+++ b/lib/nghttp3_conn.c
@@ -1944,6 +1944,17 @@ int nghttp3_conn_on_settings_entry_received(nghttp3_conn *conn,
     nghttp3_qpack_encoder_set_max_dtable_capacity(&conn->qenc,
                                                   (size_t)ent->value);
     break;
+
+
+    case NGHTTP3_SETTINGS_ENABLE_WEBTRANSPORT: {
+    dest->enable_web_transport = ent->value;
+    break;
+  }
+  case NGHTTP3_SETTINGS_ENABLE_WEBTRANSPORT_DATAGRAM: {
+    dest->enable_webtransport_datagrams = ent->value;
+    break;
+  }
+
   case NGHTTP3_SETTINGS_ID_QPACK_BLOCKED_STREAMS:
     if (dest->qpack_blocked_streams != 0) {
       return NGHTTP3_ERR_H3_SETTINGS_ERROR;
diff --git a/lib/nghttp3_frame.h b/lib/nghttp3_frame.h
index cca7ed0d..35be1d75 100644
--- a/lib/nghttp3_frame.h
+++ b/lib/nghttp3_frame.h
@@ -75,6 +75,9 @@ typedef struct nghttp3_frame_headers {
 #define NGHTTP3_H2_SETTINGS_ID_INITIAL_WINDOW_SIZE 0x4
 #define NGHTTP3_H2_SETTINGS_ID_MAX_FRAME_SIZE 0x5
 
+#define NGHTTP3_SETTINGS_ENABLE_WEBTRANSPORT 0x2b603742ULL
+#define NGHTTP3_SETTINGS_ENABLE_WEBTRANSPORT_DATAGRAM 0xffd277ULL
+
 typedef struct nghttp3_settings_entry {
   uint64_t id;
   uint64_t value;
diff --git a/lib/nghttp3_stream.c b/lib/nghttp3_stream.c
index 82aee818..384450f3 100644
--- a/lib/nghttp3_stream.c
+++ b/lib/nghttp3_stream.c
@@ -385,6 +385,22 @@ int nghttp3_stream_write_settings(nghttp3_stream *stream,
     ++fr.settings.niv;
   }
 
+   if (local_settings->enable_web_transport) {
+    iv[fr.settings.niv] = (nghttp3_settings_entry){
+      .id = NGHTTP3_SETTINGS_ENABLE_WEBTRANSPORT,
+      .value = 1,
+    };
+    ++fr.settings.niv;
+  }
+
+  if (local_settings->enable_webtransport_datagrams) {
+    iv[fr.settings.niv] = (nghttp3_settings_entry){
+      .id = NGHTTP3_SETTINGS_ENABLE_WEBTRANSPORT_DATAGRAM,
+      .value = 1,
+    };
+    ++fr.settings.niv;
+  }
+
   len = nghttp3_frame_write_settings_len(&payloadlen, &fr.settings);
 
   rv = nghttp3_stream_ensure_chunk(stream, len);