# HG changeset patch
# User Piotr Sikora <piotr@cloudflare.com>
# Date 1395704144 25200
# Node ID bd91f286ee0ade98e9c0f8f55bfef54a122adaf2
# Parent  d0e75244a18a1f381e620ce149b0f3d223461e4c
Apply underscores_in_headers also to the first character.

Signed-off-by: Piotr Sikora <piotr@cloudflare.com>

diff --git a/src/http/ngx_http_parse.c b/src/http/ngx_http_parse.c
--- a/src/http/ngx_http_parse.c
+++ b/src/http/ngx_http_parse.c
@@ -886,6 +886,19 @@ ngx_http_parse_header_line(ngx_http_requ
                     break;
                 }
 
+                if (ch == '_') {
+                    if (allow_underscores) {
+                        hash = ngx_hash(0, ch);
+                        r->lowcase_header[0] = ch;
+                        i = 1;
+
+                    } else {
+                        r->invalid_header = 1;
+                    }
+
+                    break;
+                }
+
                 if (ch == '\0') {
                     return NGX_HTTP_PARSE_INVALID_HEADER;
                 }