From: Roman Arutyunyan <arut@nginx.com>
Date: Wed, 28 Feb 2018 16:16:25 +0000 (+0300)
Subject: Skip empty buffers in HTTP response send().
X-Git-Tag: 0.2.0~29
X-Git-Url: http://www.kaiwu.me/postgresql/commit/?a=commitdiff_plain;h=2c6c2bbabcaddbeff7b6516c5cdd2e05e5f7590a;p=njs.git

Skip empty buffers in HTTP response send().

Such buffers lead to send errors and should never be sent.
---

diff --git a/nginx/ngx_http_js_module.c b/nginx/ngx_http_js_module.c
index d6d0f5b4..2a71c51b 100644
--- a/nginx/ngx_http_js_module.c
+++ b/nginx/ngx_http_js_module.c
@@ -891,6 +891,10 @@ ngx_http_js_ext_send(njs_vm_t *vm, njs_value_t *args, nxt_uint_t nargs,
                 return NJS_ERROR;
             }
 
+            if (s.length == 0) {
+                continue;
+            }
+
             /* TODO: njs_value_release(vm, value) in buf completion */
 
             ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,