merge r2919:
test GIF87a
diff --git a/src/http/modules/ngx_http_image_filter_module.c b/src/http/modules/ngx_http_image_filter_module.c
index 293a61f..c1c335a 100644
--- a/src/http/modules/ngx_http_image_filter_module.c
+++ b/src/http/modules/ngx_http_image_filter_module.c
@@ -383,11 +383,12 @@
return NGX_HTTP_IMAGE_JPEG;
} else if (p[0] == 'G' && p[1] == 'I' && p[2] == 'F' && p[3] == '8'
- && p[4] == '9' && p[5] == 'a')
+ && p[5] == 'a')
{
- /* GIF */
-
- return NGX_HTTP_IMAGE_GIF;
+ if (p[4] == '9' || p[4] == '7') {
+ /* GIF */
+ return NGX_HTTP_IMAGE_GIF;
+ }
} else if (p[0] == 0x89 && p[1] == 'P' && p[2] == 'N' && p[3] == 'G'
&& p[4] == 0x0d && p[5] == 0x0a && p[6] == 0x1a && p[7] == 0x0a)