From 3c84e4b70584b78e6a34a3233465cfa99d26b107 Mon Sep 17 00:00:00 2001
From: Ruslan Ermilov <ru@nginx.com>
Date: Tue, 15 Oct 2019 14:46:10 +0300
Subject: [PATCH] Fixed header parsing with ignore_invalid_headers switched
 off.

The parsing was broken when the first character of the header name was invalid.

Based on a patch by Alan Kemp.
---
 src/http/ngx_http_parse.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/http/ngx_http_parse.c b/src/http/ngx_http_parse.c
index aa56b976d..cfc42f9dd 100644
--- a/src/http/ngx_http_parse.c
+++ b/src/http/ngx_http_parse.c
@@ -912,6 +912,8 @@ ngx_http_parse_header_line(ngx_http_request_t *r, ngx_buf_t *b,
                         i = 1;
 
                     } else {
+                        hash = 0;
+                        i = 0;
                         r->invalid_header = 1;
                     }
 
@@ -922,6 +924,8 @@ ngx_http_parse_header_line(ngx_http_request_t *r, ngx_buf_t *b,
                     return NGX_HTTP_PARSE_INVALID_HEADER;
                 }
 
+                hash = 0;
+                i = 0;
                 r->invalid_header = 1;
 
                 break;