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protocol: increase HTLC precision to 1/1000 satoshi.

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This gets truncated for on-chain transactions (thus, rounding may
contribute to fees).

This also means we currently have an upper bound of 0.04 BTC per HTLC;
this can be increased later if required.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell
2015-09-24 15:00:47 +09:30
parent 58a62e782d
commit 5bc22f0368
13 changed files with 75 additions and 62 deletions
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6
lightning.proto
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@@ -99,15 +99,15 @@ message update {
// Hash for which I will supply preimage to revoke this.
required sha256_hash revocation_hash = 1;
// Change in current payment to-me (implies reverse to-you).
required sint64 delta = 2;
required sint64 delta_msat = 2;
}
// Start a new commitment tx to add an HTLC me -> you.
message update_add_htlc {
// Hash for which I will supply preimage to revoke this commitment tx.
required sha256_hash revocation_hash = 1;
// Amount for htlc
required uint64 amount = 2;
// Amount for htlc (millisatoshi)
required uint32 amount_msat = 2;
// Hash for HTLC R value.
required sha256_hash r_hash = 3;
// Time at which HTLC expires (absolute)