Function print_update

devtools/mkgossip.c:123–169

}

static void print_update(const struct bitcoin_blkid *chainhash,
			 const struct short_channel_id *scid,
			 const struct update_opts *opts,
			 bool is_lesser_key,
			 const struct privkey *privkey)
{
	/* 2 bytes msg type + 64 bytes of signature */
	const size_t channel_update_offset = 2 + 64;
	struct sha256_double hash;
	secp256k1_ecdsa_signature sig;
	u8 *cupdate;

	memset(&sig, 0, sizeof(sig));
	cupdate = towire_channel_update
			(NULL, &sig, chainhash, scid, opts->timestamp,
			 ROUTING_OPT_HTLC_MAX_MSAT,
			 is_lesser_key ? 0 : ROUTING_FLAGS_DIRECTION,
			 opts->cltv_expiry_delta,
			 opts->min,
			 opts->feebase.millisatoshis, /* Raw: devtools code */
			 opts->fee_proportional_millionths,
			 opts->max);
	sha256_double(&hash, cupdate + channel_update_offset,
		      tal_count(cupdate) - channel_update_offset);
	sign_hash(privkey, &hash, &sig);

	printf("type=channel_update\n");
	printf("   signature=%s\n", sig_notation(privkey, &hash, &sig));
	printf("   chain_hash=%s\n", tal_hexstr(NULL, chainhash, sizeof(*chainhash)));
	printf("   short_channel_id=%s\n", short_channel_id_to_str(NULL, scid));
	printf("   timestamp=%u\n", opts->timestamp);
	printf("   message_flags=%u\n",
	       ROUTING_OPT_HTLC_MAX_MSAT);
	printf("   channel_flags=%u\n",
	       is_lesser_key ? 0 : ROUTING_FLAGS_DIRECTION);
	printf("   cltv_expiry_delta=%u\n",
	       opts->cltv_expiry_delta);
	printf("   htlc_minimum_msat=%"PRIu64"\n",
	       opts->min.millisatoshis);  /* Raw: devtools code */
	printf("   fee_base_msat=%"PRIu64"\n",
	       opts->feebase.millisatoshis);  /* Raw: devtools code */
	printf("   fee_proportional_millionths=%u\n",
	       opts->fee_proportional_millionths);
	printf("   htlc_maximum_msat=%"PRIu64"\n",
	       opts->max.millisatoshis);  /* Raw: devtools code */
	printf("# crc32c checksum: %08x\n", crc32_of_update(cupdate));
}

static void print_nannounce(const struct node_id *nodeid,
			    const struct update_opts *opts,