From d16babcc09050966f5055df41572429bd84d811a Mon Sep 17 00:00:00 2001
From: Andrei Belov <defanator@gmail.com>
Date: Wed, 22 Mar 2017 08:43:30 +0300
Subject: [PATCH] fixed build with nginx/1.11.11

Closes openresty/echo-nginx-module#64

See also:
http://hg.nginx.org/nginx/rev/e662cbf1b932
---
 src/ngx_http_echo_request_info.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/src/ngx_http_echo_request_info.c b/src/ngx_http_echo_request_info.c
index d28ec4d..27b3c52 100644
--- a/src/ngx_http_echo_request_info.c
+++ b/src/ngx_http_echo_request_info.c
@@ -179,6 +179,9 @@ ngx_http_echo_client_request_headers_variable(ngx_http_request_t *r,
     ngx_int_t                    i, j;
     ngx_buf_t                   *b, *first = NULL;
     unsigned                     found;
+#if defined(nginx_version) && nginx_version >= 1011011
+    ngx_chain_t                 *cl;
+#endif
     ngx_connection_t            *c;
     ngx_http_request_t          *mr;
     ngx_http_connection_t       *hc;
@@ -215,8 +218,15 @@ ngx_http_echo_client_request_headers_variable(ngx_http_request_t *r,
 
     if (hc->nbusy) {
         b = NULL;
+
+#if defined(nginx_version) && nginx_version >= 1011011
+         for (cl = hc->busy; cl; /* void */) {
+             b = cl->buf;
+             cl = cl->next;
+#else
         for (i = 0; i < hc->nbusy; i++) {
             b = hc->busy[i];
+#endif
 
             if (first == NULL) {
                 if (mr->request_line.data >= b->pos
@@ -280,8 +290,15 @@ ngx_http_echo_client_request_headers_variable(ngx_http_request_t *r,
     }
 
     if (hc->nbusy) {
+
+#if defined(nginx_version) && nginx_version >= 1011011
+         for (cl = hc->busy; cl; /* void */) {
+             b = cl->buf;
+             cl = cl->next;
+#else
         for (i = 0; i < hc->nbusy; i++) {
             b = hc->busy[i];
+#endif
 
             if (!found) {
                 if (b != first) {