QUIC: removed redundant "app" flag from ngx_quic_close_frame_t.

The flag was introduced to create type-aware CONNECTION_CLOSE frames,
and now is replaced with frame type information, directly accessible.
Notably, this fixes type logging for received frames in b3d9e57d0f62.

3 files changed, 15 insertions, 16 deletions

diff --git a/src/event/quic/ngx_event_quic.c b/src/event/quic/ngx_event_quic.c
index 6a156bb71..b0628545d 100644
--- a/src/event/quic/ngx_event_quic.c
+++ b/src/event/quic/ngx_event_quic.c
@@ -522,7 +522,8 @@ ngx_quic_log_frame(ngx_log_t *log, ngx_quic_frame_t *f, ngx_uint_t tx)
     case NGX_QUIC_FT_CONNECTION_CLOSE:
     case NGX_QUIC_FT_CONNECTION_CLOSE_APP:
         p = ngx_slprintf(p, last, "CONNECTION_CLOSE%s err:%ui",
-                         f->u.close.app ? "_APP" : "", f->u.close.error_code);
+                         f->type == NGX_QUIC_FT_CONNECTION_CLOSE ? "" : "_APP",
+                         f->u.close.error_code);
 
         if (f->u.close.reason.len) {
             p = ngx_slprintf(p, last, " %V", &f->u.close.reason);
@@ -3251,10 +3252,10 @@ ngx_quic_send_cc(ngx_connection_t *c)
     }
 
     frame->level = qc->error_level;
-    frame->type = NGX_QUIC_FT_CONNECTION_CLOSE;
+    frame->type = qc->error_app ? NGX_QUIC_FT_CONNECTION_CLOSE_APP
+                                : NGX_QUIC_FT_CONNECTION_CLOSE;
     frame->u.close.error_code = qc->error;
     frame->u.close.frame_type = qc->error_ftype;
-    frame->u.close.app = qc->error_app;
 
     if (qc->error_reason) {
         frame->u.close.reason.len = ngx_strlen(qc->error_reason);
diff --git a/src/event/quic/ngx_event_quic_transport.c b/src/event/quic/ngx_event_quic_transport.c
index 2ecfac5a4..73b146731 100644
--- a/src/event/quic/ngx_event_quic_transport.c
+++ b/src/event/quic/ngx_event_quic_transport.c
@@ -116,7 +116,7 @@ static size_t ngx_quic_create_new_connection_id(u_char *p,
     ngx_quic_new_conn_id_frame_t *rcid);
 static size_t ngx_quic_create_retire_connection_id(u_char *p,
     ngx_quic_retire_cid_frame_t *rcid);
-static size_t ngx_quic_create_close(u_char *p, ngx_quic_close_frame_t *cl);
+static size_t ngx_quic_create_close(u_char *p, ngx_quic_frame_t *f);
 
 static ngx_int_t ngx_quic_parse_transport_param(u_char *p, u_char *end,
     uint16_t id, ngx_quic_tp_t *dst);
@@ -1249,7 +1249,7 @@ ngx_quic_create_frame(u_char *p, ngx_quic_frame_t *f)
     case NGX_QUIC_FT_CONNECTION_CLOSE:
     case NGX_QUIC_FT_CONNECTION_CLOSE_APP:
         f->need_ack = 0;
-        return ngx_quic_create_close(p, &f->u.close);
+        return ngx_quic_create_close(p, f);
 
     case NGX_QUIC_FT_MAX_STREAMS:
         return ngx_quic_create_max_streams(p, &f->u.max_streams);
@@ -1956,20 +1956,19 @@ ngx_quic_create_transport_params(u_char *pos, u_char *end, ngx_quic_tp_t *tp,
 
 
 static size_t
-ngx_quic_create_close(u_char *p, ngx_quic_close_frame_t *cl)
+ngx_quic_create_close(u_char *p, ngx_quic_frame_t *f)
 {
-    size_t       len;
-    u_char      *start;
-    ngx_uint_t   type;
+    size_t                   len;
+    u_char                  *start;
+    ngx_quic_close_frame_t  *cl;
 
-    type = cl->app ? NGX_QUIC_FT_CONNECTION_CLOSE_APP
-                   : NGX_QUIC_FT_CONNECTION_CLOSE;
+    cl = &f->u.close;
 
     if (p == NULL) {
-        len = ngx_quic_varint_len(type);
+        len = ngx_quic_varint_len(f->type);
         len += ngx_quic_varint_len(cl->error_code);
 
-        if (!cl->app) {
+        if (f->type != NGX_QUIC_FT_CONNECTION_CLOSE_APP) {
             len += ngx_quic_varint_len(cl->frame_type);
         }
 
@@ -1981,10 +1980,10 @@ ngx_quic_create_close(u_char *p, ngx_quic_close_frame_t *cl)
 
     start = p;
 
-    ngx_quic_build_int(&p, type);
+    ngx_quic_build_int(&p, f->type);
     ngx_quic_build_int(&p, cl->error_code);
 
-    if (!cl->app) {
+    if (f->type != NGX_QUIC_FT_CONNECTION_CLOSE_APP) {
         ngx_quic_build_int(&p, cl->frame_type);
     }
 
diff --git a/src/event/quic/ngx_event_quic_transport.h b/src/event/quic/ngx_event_quic_transport.h
index 7f82d949e..e747aaa2c 100644
--- a/src/event/quic/ngx_event_quic_transport.h
+++ b/src/event/quic/ngx_event_quic_transport.h
@@ -197,7 +197,6 @@ typedef struct {
     uint64_t                                    error_code;
     uint64_t                                    frame_type;
     ngx_str_t                                   reason;
-    ngx_uint_t                                  app;  /* unsigned  app:1; */
 } ngx_quic_close_frame_t;