From 203ba7d2361be6e1a88516516e5f4c4ea5583db7 Mon Sep 17 00:00:00 2001
From: Richard Allen <rsaxvc@gmail.com>
Date: Mon, 1 Sep 2025 21:39:14 -0500
Subject: [PATCH] Fix delayed long polling response headers

Fixes #864
---
 src/http/ngx_http_header_filter_module.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/http/ngx_http_header_filter_module.c b/src/http/ngx_http_header_filter_module.c
index 789938329..db2dea190 100644
--- a/src/http/ngx_http_header_filter_module.c
+++ b/src/http/ngx_http_header_filter_module.c
@@ -622,6 +622,9 @@ ngx_http_header_filter(ngx_http_request_t *r)
         b->last_buf = 1;
     }
 
+    if (r->chunked) {
+        b->flush = 1;
+    }
     out.buf = b;
     out.next = NULL;