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Add cache control

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This commit is contained in:
Andreas Öman 2007-12-06 15:08:10 +00:00
parent 434745c2f7
commit b7fae6d527
2 changed files with 44 additions and 9 deletions
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49
http.c
View file

@ -139,18 +139,54 @@ http_rc2str(int code)
}
}
static const char *cachedays[7] = {
"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
};
static const char *cachemonths[12] = {
"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov",
"Dec"
};
/**
* If current version mandates it, send a HTTP reply header back
*/
void
http_output_reply_header(http_connection_t *hc, int rc)
static void
http_output_reply_header(http_connection_t *hc, int rc, int maxage)
{
struct tm tm0, *tm;
time_t t;
if(hc->hc_version < HTTP_VERSION_1_0)
return;
http_printf(hc, "%s %d %s\r\n", val2str(hc->hc_version, HTTP_versiontab),
rc, http_rc2str(rc));
http_printf(hc, "Cache-Control: no-cache\r\n");
if(maxage == 0) {
http_printf(hc, "Cache-Control: no-cache\r\n");
} else {
t = dispatch_clock;
tm = gmtime_r(&t, &tm0);
http_printf(hc,
"Last-Modified: %s, %d %s %d %d:%d:%d GMT\r\n",
cachedays[tm->tm_wday], tm->tm_year + 1900,
cachemonths[tm->tm_mon], tm->tm_mday,
tm->tm_hour, tm->tm_min, tm->tm_sec);
t += maxage;
tm = gmtime_r(&t, &tm0);
http_printf(hc,
"Expires: %s, %d %s %d %d:%d:%d GMT\r\n",
cachedays[tm->tm_wday], tm->tm_year + 1900,
cachemonths[tm->tm_mon], tm->tm_mday,
tm->tm_hour, tm->tm_min, tm->tm_sec);
http_printf(hc, "Cache-Control: max-age=%d\r\n", maxage);
}
http_printf(hc, "Server: HTS/tvheadend\r\n");
http_printf(hc, "Connection: %s\r\n",
hc->hc_keep_alive ? "Keep-Alive" : "Close");
@ -166,7 +202,7 @@ http_error(http_connection_t *hc, int error)
char ret[300];
const char *errtxt = http_rc2str(error);
http_output_reply_header(hc, error);
http_output_reply_header(hc, error, 0);
snprintf(ret, sizeof(ret),
"<!DOCTYPE HTML PUBLIC \"-//IETF//DTD HTML 2.0//EN\">\r\n"
@ -193,9 +229,10 @@ http_error(http_connection_t *hc, int error)
* Send an HTTP OK and post data from a tcp queue
*/
void
http_output_queue(http_connection_t *hc, tcp_queue_t *tq, const char *content)
http_output_queue(http_connection_t *hc, tcp_queue_t *tq, const char *content,
int maxage)
{
http_output_reply_header(hc, 200);
http_output_reply_header(hc, 200, maxage);
if(hc->hc_version >= HTTP_VERSION_1_0) {
http_printf(hc,

4
http.h
View file

@ -97,10 +97,8 @@ int http_tokenize(char *buf, char **vec, int vecsize, int delimiter);
void http_error(http_connection_t *hc, int error);
void http_output_reply_header(http_connection_t *hc, int rc);
void http_output_queue(http_connection_t *hc, tcp_queue_t *tq,
const char *content);
const char *content, int maxage);
typedef int (http_callback_t)(http_connection_t *hc, const char *remain,
void *opaque);