How are "304 Not Modified" responses generated? How does a browser determine whether the response to an HTTP request is 304? Is it set by the browser or sent from the server? If sent …

Any ideas why on some links that I try to access using HttpWebRequest I am getting "The remote server returned an error: (304) Not Modified." in the code? The code I'm using is from Jeff's …

The server is returning a 304 after the browser cache has been primed. My question is, why is the browser even checking with the server and getting a 304 in the first place?

2009年11月3日 · I don't understand why I have two JavaScript files located in the same directory /js/, one returning a http status 304 and the other returning a 200 (cache) status code.

2013年9月15日 · 304 is not a problem. It simply means that your response is not modified and your browser turns to cache to fetch the resource. Can you post the relevant code in which …

2014年5月14日 · I am currently trying to understand how exactly 304/Not modified qualifies for the 3xx-range class of HTTP status codes. RFC 1945, sec. 9.3 and RFC 2616, sec. 10.3 both …

2015年10月12日 · 304 just means that the server doesn't think your cached contents are out of date. It's an attempt at optimization (rather than re-send the contents, it just says that "what …

2013年11月18日 · You can use 304 only if the response has been cached and the client issued a conditional request. The client isn't obliged to cache anything, so you can't rely on sending 304.

"304 Not Modified" means the resource is the same like when the browser requested it before (e.g. based on modification date or etag). Curl has no cache so it will always request the …

The 304 response MUST NOT contain a message-body, and thus is always terminated by the first empty line after the header fields. Server sent 304 http status to the client (browser) to let it …