bugfix: subrequest response status codes between the range 100 .. 299 (inclusive) might get lost in the return values of ngx.location.capture*() calls. thanks Igor Clark for the report.

Author: agentzh

src/ngx_http_lua_subrequest.c

@@ -1004,7 +1004,7 @@ ngx_http_lua_post_subrequest(ngx_http_request_t *r, void *data, ngx_int_t rc)
             rc = NGX_HTTP_INTERNAL_SERVER_ERROR;
         }
 
-        if (rc >= NGX_HTTP_SPECIAL_RESPONSE) {
+        if (rc >= 100) {
             pr_coctx->sr_statuses[ctx->index] = rc;
         }
     }

t/020-subrequest.t

@@ -8,6 +8,7 @@ use Test::Nginx::Socket::Lua;
 #log_level('warn');
 #master_process_enabled(1);
 
+no_root_location;
 repeat_each(2);
 
 plan tests => repeat_each() * (blocks() * 3 + 22);
@@ -2797,3 +2798,76 @@ image header filter
 --- no_error_log
 [error]
 
+
+
+=== TEST 75: WebDAV + MOVE
+--- config
+    location = /t {
+        content_by_lua_block {
+            local file1 = "/file1.txt"
+            local file2 = "/file2.txt"
+            ngx.req.set_header( "Destination", file2 )
+            local res = ngx.location.capture(
+                file1, { method = ngx.HTTP_MOVE }
+            )
+
+            ngx.say(
+                "MOVE ", file1, " -> ", file2,
+                ", response status: ", res.status
+            )
+        }
+    }
+
+    location / {
+        dav_methods MOVE;
+    }
+
+--- user_files
+>>> file1.txt
+hello, world!
+
+--- request
+GET /t
+
+--- response_body
+MOVE /file1.txt -> /file2.txt, response status: 204
+
+--- no_error_log
+[error]
+--- error_code: 200
+
+
+
+=== TEST 76: WebDAV + DELETE
+--- config
+    location = /t {
+        content_by_lua_block {
+            local file = "/file.txt"
+            local res = ngx.location.capture(
+                file, { method = ngx.HTTP_DELETE }
+            )
+
+            ngx.say(
+                "DELETE ", file,
+                ", response status: ", res.status
+            )
+        }
+    }
+
+    location / {
+        dav_methods DELETE;
+    }
+
+--- user_files
+>>> file.txt
+hello, world!
+
+--- request
+GET /t
+
+--- response_body
+DELETE /file.txt, response status: 204
+
+--- no_error_log
+[error]
+--- error_code: 200