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#ifndef LIGHTNING_COMMON_FEATURES_H
#define LIGHTNING_COMMON_FEATURES_H
#include "config.h"
#include <ccan/short_types/short_types.h>
#include <ccan/tal/tal.h>
/* Returns true if we're OK with all these offered features. */
bool features_supported(const u8 *globalfeatures, const u8 *localfeatures);
/* For sending our features: tal_count() returns length. */
u8 *get_offered_globalfeatures(const tal_t *ctx);
u8 *get_offered_localfeatures(const tal_t *ctx);
/* Is this feature bit requested? (Either compulsory or optional) */
bool feature_offered(const u8 *features, size_t f);
/* Was this feature bit offered by them and us? */
bool local_feature_negotiated(const u8 *lfeatures, size_t f);
bool global_feature_negotiated(const u8 *gfeatures, size_t f);
#define COMPULSORY_FEATURE(x) (x)
#define OPTIONAL_FEATURE(x) ((x)+1)
/* BOLT #9:
*
* ## Assigned `localfeatures` flags
*...
* | Bits | Name |...
* | 0/1 | `option_data_loss_protect` |...
* | 3 | `initial_routing_sync` |...
* | 4/5 | `option_upfront_shutdown_script` |...
* | 6/7 | `gossip_queries` |...
*/
#define LOCAL_DATA_LOSS_PROTECT 0
#define LOCAL_INITIAL_ROUTING_SYNC 2
#define LOCAL_UPFRONT_SHUTDOWN_SCRIPT 4
#define LOCAL_GOSSIP_QUERIES 6
#endif /* LIGHTNING_COMMON_FEATURES_H */