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46cc7c281e
As we add more features, the current code is insufficient. 1. Keep an array of single feature bits, for easy switching on and off. 2. Create feature_offered() which checks for both compulsory and optional variants. 3. Invert requires_unsupported_features() and unsupported_features() which tend to be double-negative, all_supported_features() and features_supported(). 4. Move single feature definition from wire/peer_wire.h to common/features.h. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
44 lines
1.4 KiB
C
44 lines
1.4 KiB
C
#ifndef LIGHTNING_WIRE_PEER_WIRE_H
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#define LIGHTNING_WIRE_PEER_WIRE_H
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#include "config.h"
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#include <stdbool.h>
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#include <wire/gen_peer_wire.h>
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/* BOLT #1:
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*
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* A node MUST ignore a received message of unknown type, if that type is odd.
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*
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* A node MUST fail the channels if it receives a message of unknown type, if
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* that type is even.
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*/
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/* Return true if it's an unknown message. cursor is a tal ptr. */
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bool is_unknown_msg(const u8 *cursor);
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/* Return true if it's an unknown ODD message. cursor is a tal ptr. */
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bool is_unknown_msg_discardable(const u8 *cursor);
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/* Return true if it's a message for gossipd. */
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bool is_msg_for_gossipd(const u8 *cursor);
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/* Extract channel_id from various packets, return true if possible. */
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bool extract_channel_id(const u8 *in_pkt, struct channel_id *channel_id);
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/* BOLT #2:
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*
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* Only the least-significant bit of `channel_flags` is currently
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* defined: `announce_channel`. This indicates whether the initiator
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* of the funding flow wishes to advertise this channel publicly to
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* the network as detailed within [BOLT #7]
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*/
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#define CHANNEL_FLAGS_ANNOUNCE_CHANNEL 1
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/* BOLT #2:
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*
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* The sender MUST set `funding_satoshis` to less than 2^24 satoshi.
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*/
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#define MAX_FUNDING_SATOSHI ((1 << 24) - 1)
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/* Compare two short_channel_ids and return true if they are the equal */
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bool short_channel_id_eq(const struct short_channel_id *a,
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const struct short_channel_id *b);
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#endif /* LIGHTNING_WIRE_PEER_WIRE_H */
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