HTTP/2: emit new frames only after applying all SETTINGS params.
Previously, new frames could be emitted in the middle of applying
new (and already acknowledged) SETTINGS params, which is illegal.
Change-Id: I5e8fabe2fbe2d8a98c65de8f77e3507e0f18413c
Signed-off-by: Piotr Sikora <piotrsikora@google.com>
Reviewed-on: https://nginx-review.googlesource.com/2940
Reviewed-by: Lizan Zhou <zlizan@google.com>
diff --git a/src/http/v2/ngx_http_v2.c b/src/http/v2/ngx_http_v2.c
index e1b864e..d5f187b 100644
--- a/src/http/v2/ngx_http_v2.c
+++ b/src/http/v2/ngx_http_v2.c
@@ -2012,7 +2012,9 @@
ngx_http_v2_state_settings_params(ngx_http_v2_connection_t *h2c, u_char *pos,
u_char *end)
{
- ngx_uint_t id, value;
+ ngx_uint_t id, value, adjustment;
+
+ adjustment = 0;
while (h2c->state.length) {
if (end - pos < NGX_HTTP_V2_SETTINGS_PARAM_SIZE) {
@@ -2072,13 +2074,7 @@
"http2 SETTINGS frame INITIAL_WINDOW_SIZE:%ui",
value);
- if (ngx_http_v2_adjust_windows(h2c, value - h2c->init_window)
- != NGX_OK)
- {
- return ngx_http_v2_connection_error(h2c,
- NGX_HTTP_V2_INTERNAL_ERROR);
- }
-
+ adjustment = value - h2c->init_window;
h2c->init_window = value;
break;
@@ -2120,6 +2116,13 @@
pos += NGX_HTTP_V2_SETTINGS_PARAM_SIZE;
}
+ if (adjustment) {
+ if (ngx_http_v2_adjust_windows(h2c, adjustment) != NGX_OK) {
+ return ngx_http_v2_connection_error(h2c,
+ NGX_HTTP_V2_INTERNAL_ERROR);
+ }
+ }
+
return ngx_http_v2_state_complete(h2c, pos, end);
}