diff --git a/deps/nghttp2/lib/CMakeLists.txt b/deps/nghttp2/lib/CMakeLists.txt
index 7ef37ed85cc628..0846d06789a0f1 100644
--- a/deps/nghttp2/lib/CMakeLists.txt
+++ b/deps/nghttp2/lib/CMakeLists.txt
@@ -44,6 +44,10 @@ set_target_properties(nghttp2 PROPERTIES
   VERSION ${LT_VERSION} SOVERSION ${LT_SOVERSION}
   C_VISIBILITY_PRESET hidden
 )
+target_include_directories(nghttp2 INTERFACE
+    "${CMAKE_CURRENT_BINARY_DIR}/includes"
+    "${CMAKE_CURRENT_SOURCE_DIR}/includes"
+    )
 
 if(HAVE_CUNIT)
   # Static library (for unittests because of symbol visibility)
diff --git a/deps/nghttp2/lib/includes/nghttp2/nghttp2.h b/deps/nghttp2/lib/includes/nghttp2/nghttp2.h
index 5696a2ef633653..13cda9f29e28f5 100644
--- a/deps/nghttp2/lib/includes/nghttp2/nghttp2.h
+++ b/deps/nghttp2/lib/includes/nghttp2/nghttp2.h
@@ -387,6 +387,11 @@ typedef enum {
    * Indicates that a processing was canceled.
    */
   NGHTTP2_ERR_CANCEL = -535,
+  /**
+   * When a local endpoint expects to receive SETTINGS frame, it
+   * receives an other type of frame.
+   */
+  NGHTTP2_ERR_SETTINGS_EXPECTED = -536,
   /**
    * The errors < :enum:`NGHTTP2_ERR_FATAL` mean that the library is
    * under unexpected condition and processing was terminated (e.g.,
@@ -1987,6 +1992,9 @@ typedef ssize_t (*nghttp2_pack_extension_callback)(nghttp2_session *session,
  * of length |len|.  |len| does not include the sentinel NULL
  * character.
  *
+ * This function is deprecated.  The new application should use
+ * :type:`nghttp2_error_callback2`.
+ *
  * The format of error message may change between nghttp2 library
  * versions.  The application should not depend on the particular
  * format.
@@ -2003,6 +2011,33 @@ typedef ssize_t (*nghttp2_pack_extension_callback)(nghttp2_session *session,
 typedef int (*nghttp2_error_callback)(nghttp2_session *session, const char *msg,
                                       size_t len, void *user_data);
 
+/**
+ * @functypedef
+ *
+ * Callback function invoked when library provides the error code, and
+ * message.  This callback is solely for debugging purpose.
+ * |lib_error_code| is one of error code defined in
+ * :enum:`nghttp2_error`.  The |msg| is typically NULL-terminated
+ * string of length |len|, and intended for human consumption.  |len|
+ * does not include the sentinel NULL character.
+ *
+ * The format of error message may change between nghttp2 library
+ * versions.  The application should not depend on the particular
+ * format.
+ *
+ * Normally, application should return 0 from this callback.  If fatal
+ * error occurred while doing something in this callback, application
+ * should return :enum:`NGHTTP2_ERR_CALLBACK_FAILURE`.  In this case,
+ * library will return immediately with return value
+ * :enum:`NGHTTP2_ERR_CALLBACK_FAILURE`.  Currently, if nonzero value
+ * is returned from this callback, they are treated as
+ * :enum:`NGHTTP2_ERR_CALLBACK_FAILURE`, but application should not
+ * rely on this details.
+ */
+typedef int (*nghttp2_error_callback2)(nghttp2_session *session,
+                                       int lib_error_code, const char *msg,
+                                       size_t len, void *user_data);
+
 struct nghttp2_session_callbacks;
 
 /**
@@ -2267,10 +2302,30 @@ nghttp2_session_callbacks_set_on_extension_chunk_recv_callback(
  *
  * Sets callback function invoked when library tells error message to
  * the application.
+ *
+ * This function is deprecated.  The new application should use
+ * `nghttp2_session_callbacks_set_error_callback2()`.
+ *
+ * If both :type:`nghttp2_error_callback` and
+ * :type:`nghttp2_error_callback2` are set, the latter takes
+ * precedence.
  */
 NGHTTP2_EXTERN void nghttp2_session_callbacks_set_error_callback(
     nghttp2_session_callbacks *cbs, nghttp2_error_callback error_callback);
 
+/**
+ * @function
+ *
+ * Sets callback function invoked when library tells error code, and
+ * message to the application.
+ *
+ * If both :type:`nghttp2_error_callback` and
+ * :type:`nghttp2_error_callback2` are set, the latter takes
+ * precedence.
+ */
+NGHTTP2_EXTERN void nghttp2_session_callbacks_set_error_callback2(
+    nghttp2_session_callbacks *cbs, nghttp2_error_callback2 error_callback2);
+
 /**
  * @functypedef
  *
@@ -4702,8 +4757,8 @@ nghttp2_hd_deflate_change_table_size(nghttp2_hd_deflater *deflater,
  *
  * After this function returns, it is safe to delete the |nva|.
  *
- * This function returns 0 if it succeeds, or one of the following
- * negative error codes:
+ * This function returns the number of bytes written to |buf| if it
+ * succeeds, or one of the following negative error codes:
  *
  * :enum:`NGHTTP2_ERR_NOMEM`
  *     Out of memory.
@@ -4734,8 +4789,8 @@ NGHTTP2_EXTERN ssize_t nghttp2_hd_deflate_hd(nghttp2_hd_deflater *deflater,
  *
  * After this function returns, it is safe to delete the |nva|.
  *
- * This function returns 0 if it succeeds, or one of the following
- * negative error codes:
+ * This function returns the number of bytes written to |vec| if it
+ * succeeds, or one of the following negative error codes:
  *
  * :enum:`NGHTTP2_ERR_NOMEM`
  *     Out of memory.
diff --git a/deps/nghttp2/lib/includes/nghttp2/nghttp2ver.h b/deps/nghttp2/lib/includes/nghttp2/nghttp2ver.h
index 38c48bf041f1e8..455706a5868b3a 100644
--- a/deps/nghttp2/lib/includes/nghttp2/nghttp2ver.h
+++ b/deps/nghttp2/lib/includes/nghttp2/nghttp2ver.h
@@ -29,7 +29,7 @@
  * @macro
  * Version number of the nghttp2 library release
  */
-#define NGHTTP2_VERSION "1.25.0"
+#define NGHTTP2_VERSION "1.29.0"
 
 /**
  * @macro
@@ -37,6 +37,6 @@
  * release. This is a 24 bit number with 8 bits for major number, 8 bits
  * for minor and 8 bits for patch. Version 1.2.3 becomes 0x010203.
  */
-#define NGHTTP2_VERSION_NUM 0x011900
+#define NGHTTP2_VERSION_NUM 0x011d00
 
 #endif /* NGHTTP2VER_H */
diff --git a/deps/nghttp2/lib/nghttp2_buf.h b/deps/nghttp2/lib/nghttp2_buf.h
index 06ab1e4c630cc3..9f484a221acb5f 100644
--- a/deps/nghttp2/lib/nghttp2_buf.h
+++ b/deps/nghttp2/lib/nghttp2_buf.h
@@ -398,7 +398,7 @@ int nghttp2_bufs_advance(nghttp2_bufs *bufs);
 void nghttp2_bufs_seek_last_present(nghttp2_bufs *bufs);
 
 /*
- * Returns nonzero if bufs->cur->next is not emtpy.
+ * Returns nonzero if bufs->cur->next is not empty.
  */
 int nghttp2_bufs_next_present(nghttp2_bufs *bufs);
 
diff --git a/deps/nghttp2/lib/nghttp2_callbacks.c b/deps/nghttp2/lib/nghttp2_callbacks.c
index b6cf5957f01b59..3c38214859b17a 100644
--- a/deps/nghttp2/lib/nghttp2_callbacks.c
+++ b/deps/nghttp2/lib/nghttp2_callbacks.c
@@ -168,3 +168,8 @@ void nghttp2_session_callbacks_set_error_callback(
     nghttp2_session_callbacks *cbs, nghttp2_error_callback error_callback) {
   cbs->error_callback = error_callback;
 }
+
+void nghttp2_session_callbacks_set_error_callback2(
+    nghttp2_session_callbacks *cbs, nghttp2_error_callback2 error_callback2) {
+  cbs->error_callback2 = error_callback2;
+}
diff --git a/deps/nghttp2/lib/nghttp2_callbacks.h b/deps/nghttp2/lib/nghttp2_callbacks.h
index 5967524e0c6493..b607bbb58b8e3d 100644
--- a/deps/nghttp2/lib/nghttp2_callbacks.h
+++ b/deps/nghttp2/lib/nghttp2_callbacks.h
@@ -119,6 +119,7 @@ struct nghttp2_session_callbacks {
   nghttp2_unpack_extension_callback unpack_extension_callback;
   nghttp2_on_extension_chunk_recv_callback on_extension_chunk_recv_callback;
   nghttp2_error_callback error_callback;
+  nghttp2_error_callback2 error_callback2;
 };
 
 #endif /* NGHTTP2_CALLBACKS_H */
diff --git a/deps/nghttp2/lib/nghttp2_frame.h b/deps/nghttp2/lib/nghttp2_frame.h
index 891289f61bf5e7..35ca214a4a7a59 100644
--- a/deps/nghttp2/lib/nghttp2_frame.h
+++ b/deps/nghttp2/lib/nghttp2_frame.h
@@ -70,7 +70,9 @@
 #define NGHTTP2_MAX_PADLEN 256
 
 /* Union of extension frame payload */
-typedef union { nghttp2_ext_altsvc altsvc; } nghttp2_ext_frame_payload;
+typedef union {
+  nghttp2_ext_altsvc altsvc;
+} nghttp2_ext_frame_payload;
 
 void nghttp2_frame_pack_frame_hd(uint8_t *buf, const nghttp2_frame_hd *hd);
 
diff --git a/deps/nghttp2/lib/nghttp2_hd.h b/deps/nghttp2/lib/nghttp2_hd.h
index 458edafe4d5847..760bfbc357efdc 100644
--- a/deps/nghttp2/lib/nghttp2_hd.h
+++ b/deps/nghttp2/lib/nghttp2_hd.h
@@ -211,7 +211,9 @@ typedef struct {
 
 #define HD_MAP_SIZE 128
 
-typedef struct { nghttp2_hd_entry *table[HD_MAP_SIZE]; } nghttp2_hd_map;
+typedef struct {
+  nghttp2_hd_entry *table[HD_MAP_SIZE];
+} nghttp2_hd_map;
 
 struct nghttp2_hd_deflater {
   nghttp2_hd_context ctx;
@@ -313,7 +315,7 @@ void nghttp2_hd_deflate_free(nghttp2_hd_deflater *deflater);
  *
  * This function expands |bufs| as necessary to store the result. If
  * buffers is full and the process still requires more space, this
- * funtion fails and returns NGHTTP2_ERR_HEADER_COMP.
+ * function fails and returns NGHTTP2_ERR_HEADER_COMP.
  *
  * After this function returns, it is safe to delete the |nva|.
  *
diff --git a/deps/nghttp2/lib/nghttp2_helper.c b/deps/nghttp2/lib/nghttp2_helper.c
index b00c9073a92a13..3b282c7301f95b 100644
--- a/deps/nghttp2/lib/nghttp2_helper.c
+++ b/deps/nghttp2/lib/nghttp2_helper.c
@@ -322,6 +322,9 @@ const char *nghttp2_strerror(int error_code) {
     return "Internal error";
   case NGHTTP2_ERR_CANCEL:
     return "Cancel";
+  case NGHTTP2_ERR_SETTINGS_EXPECTED:
+    return "When a local endpoint expects to receive SETTINGS frame, it "
+           "receives an other type of frame";
   case NGHTTP2_ERR_NOMEM:
     return "Out of memory";
   case NGHTTP2_ERR_CALLBACK_FAILURE:
diff --git a/deps/nghttp2/lib/nghttp2_outbound_item.h b/deps/nghttp2/lib/nghttp2_outbound_item.h
index 8bda776bfe2728..89a8a92668dd5c 100644
--- a/deps/nghttp2/lib/nghttp2_outbound_item.h
+++ b/deps/nghttp2/lib/nghttp2_outbound_item.h
@@ -112,7 +112,7 @@ struct nghttp2_outbound_item {
   nghttp2_ext_frame_payload ext_frame_payload;
   nghttp2_aux_data aux_data;
   /* The priority used in priority comparion.  Smaller is served
-     ealier.  For PING, SETTINGS and non-DATA frames (excluding
+     earlier.  For PING, SETTINGS and non-DATA frames (excluding
      response HEADERS frame) have dedicated cycle value defined above.
      For DATA frame, cycle is computed by taking into account of
      effective weight and frame payload length previously sent, so
diff --git a/deps/nghttp2/lib/nghttp2_pq.h b/deps/nghttp2/lib/nghttp2_pq.h
index 1426bef760132c..71cf96a14e0c77 100644
--- a/deps/nghttp2/lib/nghttp2_pq.h
+++ b/deps/nghttp2/lib/nghttp2_pq.h
@@ -35,7 +35,9 @@
 
 /* Implementation of priority queue */
 
-typedef struct { size_t index; } nghttp2_pq_entry;
+typedef struct {
+  size_t index;
+} nghttp2_pq_entry;
 
 typedef struct {
   /* The pointer to the pointer to the item stored */
@@ -71,7 +73,7 @@ void nghttp2_pq_free(nghttp2_pq *pq);
 /*
  * Adds |item| to the priority queue |pq|.
  *
- * This function returns 0 if it succeds, or one of the following
+ * This function returns 0 if it succeeds, or one of the following
  * negative error codes:
  *
  * NGHTTP2_ERR_NOMEM
diff --git a/deps/nghttp2/lib/nghttp2_queue.h b/deps/nghttp2/lib/nghttp2_queue.h
index d872b07bde961c..c7eb753ca92182 100644
--- a/deps/nghttp2/lib/nghttp2_queue.h
+++ b/deps/nghttp2/lib/nghttp2_queue.h
@@ -36,7 +36,9 @@ typedef struct nghttp2_queue_cell {
   struct nghttp2_queue_cell *next;
 } nghttp2_queue_cell;
 
-typedef struct { nghttp2_queue_cell *front, *back; } nghttp2_queue;
+typedef struct {
+  nghttp2_queue_cell *front, *back;
+} nghttp2_queue;
 
 void nghttp2_queue_init(nghttp2_queue *queue);
 void nghttp2_queue_free(nghttp2_queue *queue);
diff --git a/deps/nghttp2/lib/nghttp2_session.c b/deps/nghttp2/lib/nghttp2_session.c
index 4bc94cbb1982ad..b14ed77a25c293 100644
--- a/deps/nghttp2/lib/nghttp2_session.c
+++ b/deps/nghttp2/lib/nghttp2_session.c
@@ -148,14 +148,16 @@ static int check_ext_type_set(const uint8_t *ext_types, uint8_t type) {
 }
 
 static int session_call_error_callback(nghttp2_session *session,
-                                       const char *fmt, ...) {
+                                       int lib_error_code, const char *fmt,
+                                       ...) {
   size_t bufsize;
   va_list ap;
   char *buf;
   int rv;
   nghttp2_mem *mem;
 
-  if (!session->callbacks.error_callback) {
+  if (!session->callbacks.error_callback &&
+      !session->callbacks.error_callback2) {
     return 0;
   }
 
@@ -189,8 +191,13 @@ static int session_call_error_callback(nghttp2_session *session,
     return 0;
   }
 
-  rv = session->callbacks.error_callback(session, buf, (size_t)rv,
-                                         session->user_data);
+  if (session->callbacks.error_callback2) {
+    rv = session->callbacks.error_callback2(session, lib_error_code, buf,
+                                            (size_t)rv, session->user_data);
+  } else {
+    rv = session->callbacks.error_callback(session, buf, (size_t)rv,
+                                           session->user_data);
+  }
 
   nghttp2_mem_free(mem, buf);
 
@@ -541,9 +548,8 @@ static int session_new(nghttp2_session **session_ptr,
   if (nghttp2_enable_strict_preface) {
     nghttp2_inbound_frame *iframe = &(*session_ptr)->iframe;
 
-    if (server &&
-        ((*session_ptr)->opt_flags & NGHTTP2_OPTMASK_NO_RECV_CLIENT_MAGIC) ==
-            0) {
+    if (server && ((*session_ptr)->opt_flags &
+                   NGHTTP2_OPTMASK_NO_RECV_CLIENT_MAGIC) == 0) {
       iframe->state = NGHTTP2_IB_READ_CLIENT_MAGIC;
       iframe->payloadleft = NGHTTP2_CLIENT_MAGIC_LEN;
     } else {
@@ -2183,7 +2189,7 @@ static int session_prep_frame(nghttp2_session *session,
        closed. */
     stream = nghttp2_session_get_stream(session, frame->hd.stream_id);
 
-    /* predicte should fail if stream is NULL. */
+    /* predicate should fail if stream is NULL. */
     rv = session_predicate_push_promise_send(session, stream);
     if (rv != 0) {
       return rv;
@@ -2411,19 +2417,16 @@ static int session_close_stream_on_goaway(nghttp2_session *session,
   nghttp2_stream *stream, *next_stream;
   nghttp2_close_stream_on_goaway_arg arg = {session, NULL, last_stream_id,
                                             incoming};
-  uint32_t error_code;
 
   rv = nghttp2_map_each(&session->streams, find_stream_on_goaway_func, &arg);
   assert(rv == 0);
 
-  error_code =
-      session->server && incoming ? NGHTTP2_REFUSED_STREAM : NGHTTP2_CANCEL;
-
   stream = arg.head;
   while (stream) {
     next_stream = stream->closed_next;
     stream->closed_next = NULL;
-    rv = nghttp2_session_close_stream(session, stream->stream_id, error_code);
+    rv = nghttp2_session_close_stream(session, stream->stream_id,
+                                      NGHTTP2_REFUSED_STREAM);
 
     /* stream may be deleted here */
 
@@ -3608,7 +3611,7 @@ static int inflate_header_block(nghttp2_session *session, nghttp2_frame *frame,
                    nv.name->base, (int)nv.value->len, nv.value->base);
 
             rv2 = session_call_error_callback(
-                session,
+                session, NGHTTP2_ERR_HTTP_HEADER,
                 "Ignoring received invalid HTTP header field: frame type: "
                 "%u, stream: %d, name: [%.*s], value: [%.*s]",
                 frame->hd.type, frame->hd.stream_id, (int)nv.name->len,
@@ -3626,8 +3629,9 @@ static int inflate_header_block(nghttp2_session *session, nghttp2_frame *frame,
                  nv.name->base, (int)nv.value->len, nv.value->base);
 
           rv = session_call_error_callback(
-              session, "Invalid HTTP header field was received: frame type: "
-                       "%u, stream: %d, name: [%.*s], value: [%.*s]",
+              session, NGHTTP2_ERR_HTTP_HEADER,
+              "Invalid HTTP header field was received: frame type: "
+              "%u, stream: %d, name: [%.*s], value: [%.*s]",
               frame->hd.type, frame->hd.stream_id, (int)nv.name->len,
               nv.name->base, (int)nv.value->len, nv.value->base);
 
@@ -3781,7 +3785,7 @@ int nghttp2_session_on_request_headers_received(nghttp2_session *session,
         session, frame, NGHTTP2_ERR_PROTO, "request HEADERS: stream_id == 0");
   }
 
-  /* If client recieves idle stream from server, it is invalid
+  /* If client receives idle stream from server, it is invalid
      regardless stream ID is even or odd.  This is because client is
      not expected to receive request from server. */
   if (!session->server) {
@@ -5345,9 +5349,10 @@ ssize_t nghttp2_session_mem_recv(nghttp2_session *session, const uint8_t *in,
         iframe->state = NGHTTP2_IB_IGN_ALL;
 
         rv = session_call_error_callback(
-            session, "Remote peer returned unexpected data while we expected "
-                     "SETTINGS frame.  Perhaps, peer does not support HTTP/2 "
-                     "properly.");
+            session, NGHTTP2_ERR_SETTINGS_EXPECTED,
+            "Remote peer returned unexpected data while we expected "
+            "SETTINGS frame.  Perhaps, peer does not support HTTP/2 "
+            "properly.");
 
         if (nghttp2_is_fatal(rv)) {
           return rv;
@@ -5588,13 +5593,13 @@ ssize_t nghttp2_session_mem_recv(nghttp2_session *session, const uint8_t *in,
         if (iframe->payloadleft) {
           nghttp2_settings_entry *min_header_table_size_entry;
 
-          /* We allocate iv with addtional one entry, to store the
+          /* We allocate iv with additional one entry, to store the
              minimum header table size. */
           iframe->max_niv =
               iframe->frame.hd.length / NGHTTP2_FRAME_SETTINGS_ENTRY_LENGTH + 1;
 
-          iframe->iv = nghttp2_mem_malloc(
-              mem, sizeof(nghttp2_settings_entry) * iframe->max_niv);
+          iframe->iv = nghttp2_mem_malloc(mem, sizeof(nghttp2_settings_entry) *
+                                                   iframe->max_niv);
 
           if (!iframe->iv) {
             return NGHTTP2_ERR_NOMEM;
diff --git a/deps/nghttp2/lib/nghttp2_session.h b/deps/nghttp2/lib/nghttp2_session.h
index 3e1467f6a356d7..c7cb27d77c1e25 100644
--- a/deps/nghttp2/lib/nghttp2_session.h
+++ b/deps/nghttp2/lib/nghttp2_session.h
@@ -319,7 +319,7 @@ struct nghttp2_session {
   uint8_t pending_enable_push;
   /* Nonzero if the session is server side. */
   uint8_t server;
-  /* Flags indicating GOAWAY is sent and/or recieved. The flags are
+  /* Flags indicating GOAWAY is sent and/or received. The flags are
      composed by bitwise OR-ing nghttp2_goaway_flag. */
   uint8_t goaway_flags;
   /* This flag is used to reduce excessive queuing of WINDOW_UPDATE to
@@ -722,7 +722,7 @@ int nghttp2_session_on_goaway_received(nghttp2_session *session,
                                        nghttp2_frame *frame);
 
 /*
- * Called when WINDOW_UPDATE is recieved, assuming |frame| is properly
+ * Called when WINDOW_UPDATE is received, assuming |frame| is properly
  * initialized.
  *
  * This function returns 0 if it succeeds, or one of the following
@@ -737,7 +737,7 @@ int nghttp2_session_on_window_update_received(nghttp2_session *session,
                                               nghttp2_frame *frame);
 
 /*
- * Called when ALTSVC is recieved, assuming |frame| is properly
+ * Called when ALTSVC is received, assuming |frame| is properly
  * initialized.
  *
  * This function returns 0 if it succeeds, or one of the following
diff --git a/deps/nghttp2/lib/nghttp2_stream.c b/deps/nghttp2/lib/nghttp2_stream.c
index 8dee6ef660983c..eccd3174ef7bda 100644
--- a/deps/nghttp2/lib/nghttp2_stream.c
+++ b/deps/nghttp2/lib/nghttp2_stream.c
@@ -366,8 +366,9 @@ static void check_queued(nghttp2_stream *stream) {
         }
       }
       if (queued == 0) {
-        fprintf(stderr, "stream(%p)=%d, stream->queued == 1, and "
-                        "!stream_active(), but no descendants is queued\n",
+        fprintf(stderr,
+                "stream(%p)=%d, stream->queued == 1, and "
+                "!stream_active(), but no descendants is queued\n",
                 stream, stream->stream_id);
         assert(0);
       }
@@ -378,9 +379,10 @@ static void check_queued(nghttp2_stream *stream) {
     }
   } else {
     if (stream_active(stream) || !nghttp2_pq_empty(&stream->obq)) {
-      fprintf(stderr, "stream(%p) = %d, stream->queued == 0, but "
-                      "stream_active(stream) == %d and "
-                      "nghttp2_pq_size(&stream->obq) = %zu\n",
+      fprintf(stderr,
+              "stream(%p) = %d, stream->queued == 0, but "
+              "stream_active(stream) == %d and "
+              "nghttp2_pq_size(&stream->obq) = %zu\n",
               stream, stream->stream_id, stream_active(stream),
               nghttp2_pq_size(&stream->obq));
       assert(0);