HTTP/3: http3_max_uni_streams directive.

The directive limits the number of uni streams client is allowed to create.

1 files changed, 14 insertions, 0 deletions

diff --git a/src/http/v3/ngx_http_v3_streams.c b/src/http/v3/ngx_http_v3_streams.c
index 693225b89..1b0f91454 100644
--- a/src/http/v3/ngx_http_v3_streams.c
+++ b/src/http/v3/ngx_http_v3_streams.c
@@ -35,10 +35,24 @@ static ngx_connection_t *ngx_http_v3_get_uni_stream(ngx_connection_t *c,
 void
 ngx_http_v3_init_uni_stream(ngx_connection_t *c)
 {
+    uint64_t                   n;
+    ngx_http_v3_srv_conf_t    *h3scf;
     ngx_http_v3_uni_stream_t  *us;
 
     ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 init uni stream");
 
+    h3scf = ngx_http_v3_get_module_srv_conf(c, ngx_http_v3_module);
+
+    n = c->quic->id >> 2;
+
+    if (n >= h3scf->max_uni_streams) {
+        ngx_http_v3_finalize_connection(c,
+                                      NGX_HTTP_V3_ERR_STREAM_CREATION_ERROR,
+                                      "reached maximum number of uni streams");
+        ngx_http_close_connection(c);
+        return;
+    }
+
     c->quic->cancelable = 1;
 
     us = ngx_pcalloc(c->pool, sizeof(ngx_http_v3_uni_stream_t));