Re: Pragma: no-cache and Squid

Vladimir Litovka wrote:

> Why there are documents in cache, which has 'Pragma: no-cache' header?

'Pragma: no-cache' is only defined for requests, not responses.

Here is a short code segment that adds Pragma: no-cache parsing on
responses, but it should really be solved at the HTTP server by sending
proper Expires: and/or Cache-Control: headers.

http.c:httpParseReplyHeader()

        ...
        } else if (!strncasecmp(t, "Pragma:", 7)) {
            for (t += 7; isspace(*t); t++);
            if (!strncasecmp(t, "no-cache", 8)) {
                EBIT_SET(reply->cache_control, SCC_NOCACHE);
                ReplyHeaderStats.cc[SCC_NOCACHE]++;
            }
        } else if (!strncasecmp(t, "Cache-Control:", 14)) {
        ...

I's left as a excersise to the reader how to add this piece of code at
the right place.

---
Henrik Nordström
Sparetime Squid Hacker