From: Denis Vlasenko <vda.linux@googlemail.com>
Date: Sun, 22 Jun 2008 16:28:02 +0000 (-0000)
Subject: wget: accept code 204.
X-Git-Tag: 1_11_0~18
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=50b5cac59f5140a980824cdeb03b477ca588be6e;p=oweals%2Fbusybox.git

wget: accept code 204.
---

diff --git a/networking/wget.c b/networking/wget.c
index 7198197dd..b45811533 100644
--- a/networking/wget.c
+++ b/networking/wget.c
@@ -598,6 +598,31 @@ int wget_main(int argc ATTRIBUTE_UNUSED, char **argv)
 					/* eat all remaining headers */;
 				goto read_response;
 			case 200:
+/*
+Response 204 doesn't say "null file", it says "metadata
+has changed but data didn't":
+
+"10.2.5 204 No Content
+The server has fulfilled the request but does not need to return
+an entity-body, and might want to return updated metainformation.
+The response MAY include new or updated metainformation in the form
+of entity-headers, which if present SHOULD be associated with
+the requested variant.
+
+If the client is a user agent, it SHOULD NOT change its document
+view from that which caused the request to be sent. This response
+is primarily intended to allow input for actions to take place
+without causing a change to the user agent's active document view,
+although any new or updated metainformation SHOULD be applied
+to the document currently in the user agent's active view.
+
+The 204 response MUST NOT include a message-body, and thus
+is always terminated by the first empty line after the header fields."
+
+However, in real world it was observed that some web servers
+(e.g. Boa/0.94.14rc21) simply use code 204 when file size is zero.
+*/
+			case 204:
 				break;
 			case 300:	/* redirection */
 			case 301: