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authorChristian Grothoff <christian@grothoff.org>2024-04-07 19:40:31 +0200
committerChristian Grothoff <christian@grothoff.org>2024-04-07 19:40:31 +0200
commit052685737ceb34fdc942eb40ee4abab4824665d3 (patch)
tree975d0911d20e8fc41e03cc93c8a6fe32b59c508e /src
parentb53099fee9ab9aa597c0f40f30699da9be1f2333 (diff)
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add cache control to /config
Diffstat (limited to 'src')
-rw-r--r--src/backend/taler-merchant-httpd_config.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/src/backend/taler-merchant-httpd_config.c b/src/backend/taler-merchant-httpd_config.c
index c7dec0f9..e8d4b0fa 100644
--- a/src/backend/taler-merchant-httpd_config.c
+++ b/src/backend/taler-merchant-httpd_config.c
@@ -89,9 +89,23 @@ MH_handler_config (struct TMH_RequestHandler *rh,
{
json_t *specs = json_object ();
json_t *exchanges = json_array ();
+ struct GNUNET_TIME_Absolute a;
+ struct GNUNET_TIME_Timestamp km;
+ char dat[128];
GNUNET_assert (NULL != specs);
GNUNET_assert (NULL != exchanges);
+ a = GNUNET_TIME_relative_to_absolute (GNUNET_TIME_UNIT_DAYS);
+ /* Round up to next full day to ensure the expiration
+ time does not become a fingerprint! */
+ a = GNUNET_TIME_absolute_round_down (a,
+ GNUNET_TIME_UNIT_DAYS);
+ a = GNUNET_TIME_absolute_add (a,
+ GNUNET_TIME_UNIT_DAYS);
+ /* => /config response stays at most 48h in caches! */
+ km = GNUNET_TIME_absolute_to_timestamp (a);
+ TALER_MHD_get_date_string (km.abs_time,
+ dat);
TMH_exchange_get_trusted (&add_exchange,
exchanges);
for (unsigned int i = 0; i<TMH_num_cspecs; i++)
@@ -118,6 +132,14 @@ MH_handler_config (struct TMH_RequestHandler *rh,
"taler-merchant"),
GNUNET_JSON_pack_string ("version",
MERCHANT_PROTOCOL_VERSION));
+ GNUNET_break (MHD_YES ==
+ MHD_add_response_header (response,
+ MHD_HTTP_HEADER_EXPIRES,
+ dat));
+ GNUNET_break (MHD_YES ==
+ MHD_add_response_header (response,
+ MHD_HTTP_HEADER_CACHE_CONTROL,
+ "public,max-age=21600")); /* 6h */
}
return MHD_queue_response (connection,
MHD_HTTP_OK,