Oops.

nginx_1.15.4_strict-sni.patch

@@ -29,7 +29,7 @@ index 75129134..fd4d3bb1 100644
  
      return NGX_ERROR;
 diff --git a/src/http/ngx_http_request.c b/src/http/ngx_http_request.c
-index 7dd28b8c..aacc600a 100644
+index 7dd28b8c..5e5bbed1 100644
 --- a/src/http/ngx_http_request.c
 +++ b/src/http/ngx_http_request.c
 @@ -849,7 +849,7 @@ ngx_http_ssl_servername(ngx_ssl_conn_t *ssl_conn, int *ad, void *arg)
@@ -50,3 +50,12 @@ index 7dd28b8c..aacc600a 100644
      }
  
      host.data = (u_char *) servername;
+@@ -879,7 +879,7 @@ ngx_http_ssl_servername(ngx_ssl_conn_t *ssl_conn, int *ad, void *arg)
+                                      NULL, &cscf)
+         != NGX_OK)
+     {
+-        return SSL_TLSEXT_ERR_NOACK;
++        return SSL_TLSEXT_ERR_ALERT_FATAL;
+     }
+ 
+     hc->ssl_servername = ngx_palloc(c->pool, sizeof(ngx_str_t));