Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog and this project adheres to Semantic Versioning.

0.6.1-rc1 - 2018-08-25: "Principled Opposition To Segwit"

This release named by ZmnSCPxj.

Protocol: gossipd now deliberately delays spamming with channel_update.
Protocol: liveness ping when we commit changes but peer is idle: speeds up failures and reduces forced closures.
Protocol: option_data_loss_protect now supported to protect peers against being out-of-date.
JSON API: Added description to invoices and payments (#1740).
JSON API: getinfo has new fields alias and color.
JSON API: listpeers has new fields global_features and local_features.
JSON API: listnodes has new field global_features.
JSON API: ping command to send a ping to a connected peer.
JSON API: feerates command to retrieve current fee estimates.
JSON API: withdraw and fundchannel can be given manual feerate.
Config: --conf option to set config file.
Documentation: Added CHANGELOG.md
pylightning: RpcError now has method and payload fields.
Sending lightningd a SIGHUP will make it reopen its log-file, if any.

Protocol: Fee estimates are now smoothed over time, to avoid sudden jumps.
Config: You can only announce one address if each type (IPv4, IPv6, TORv2, TORv3).
lightning-cli: the help command for a specific command now runs the man command.
HSM: The HSM daemon now maintains the per-peer secrets, rather than handing them out. It's still lax in what it signs though.
connectd: A new daemon lightning_connectd handles connecting to/from peers, instead of gossipd doing that itself. lightning_openingd now handles peers immediately, even if they never actually open a channel.
Test: python-xdist is now a dependency for tests.
Logging: JSON connections no longer spam debug logs.
Routing: We no longer consider channels that are not usable either because of their capacity or their htlc_minimum_msat parameter (#1777)
We now try to connect to all known addresses for a peer, not just the one given or the first one announced.
Crash logs are now placed one-per file like crash.log.20180822233752
We will no longer allow withdrawing funds or funding channels if we do not have a fee estimate (eg. bitcoind not synced); use new feerate arg.

Note: You should always set allow-deprecated-apis=false to test for changes.

JSON API: listpeers results no long have alias and color fields; they're in listnodes (we used to internally merge the information).
JSON API: listpeers will never have state field (it accidentally used to exist and set to GOSSIPING before we opened a channel). connected will indicate if we're connected, and the channels array indicates individual channel states (if any).
Config: default-fee-rate is no longer available; use explicit feerate option if necessary.
Removed all Deprecated options from 0.6.

Protocol: node_announcement multiple addresses are correctly ordered and uniquified.
Protocol: if we can't estimate feerate, be almost infinitely tolerant of other side setting fees to avoid unilateral close.
JSON API: listnodes: now displays node aliases and colors even if they don't advertise a network address
JSON API: fundchannel all: now restricts to 2^24-1 satoshis rather than failing.
JSON API: listnodes: now correctly prints addresses if more than one is advertised.
Config: bind-addr of a publicly accessible network address was announced.
When we reconnect and have to retransmit failing HTLCs, the errors weren't encrypted by us.
lightningd_config man page is now installed by make install.
Fixed crash when shutting down during opening a channel (#1737)
Don't lose track of our own output when applying penalty transaction (#1738)
Protocol: channel_update inside error messages now refers to correct channel.
Stripping type prefix from channel_updates that are nested in an onion reply to be compatible with eclair and lnd (#1730).
Failing tests no longer delete the test directory, to allow easier debugging (Issue: #1599)

In the prehistory of c-lightning, no changelog was kept. But major JSON API changes are tracked.

This release named by Fabrice Drouin.

Note: You should always set allow-deprecated-apis=false to test for changes.

Config: port. Use addr=:<portnum>.
Config: ipaddr. Use addr.
Config: anchor-confirms. Use funding-confirms.
Config: locktime-blocks. Use watchtime-blocks.
Protocol: on closing we allow out-of-range offers, prior to spec fix 2018-01-30 ("BOLT 2: order closing-signed negotiation by making funder send first." 90241d9cf60a598eac8fd839ac81e4093a161272)
JSON API: listinvoice command. Use listinvoices.
JSON API: invoice result fields paid_timestamp and expiry_time. Use paid_at and expires_at.
JSON API: invoice command field fallback. Use fallbacks.
JSON API: decodepay result fields timestamp and fallback. Use created_at and fallbacks.
JSON API: payment result fields timestamp. Use created_at.
JSON API: getinfo result field port. Use binding and address arrays.
JSON API: getlog result field creation_time. Use created_at.
JSON API: getpeers result field channel_reserve_satoshis. Use their_channel_reserve_satoshis.
JSON API: getpeers result field to_self_delay. Use their_to_self_delay.

There predate the BOLT specifications, and are only of vague historic interest:

0.1 - 2015-08-08: "MtGox's Cold Wallet" (named by Rusty Russell)
0.2 - 2016-01-22: "Butterfly Labs' Timely Delivery" (named by Anthony Towns)
0.3 - 2016-05-25: "Nakamoto's Genesis Coins" (named by Braydon Fuller)
0.4 - 2016-08-19: "Wright's Cryptographic Proof" (named by Chrstian Decker)
0.5 - 2016-10-19: "Bitcoin Savings & Trust Daily Interest" (named by Glenn Willen)
0.5.1 - 2016-10-21
0.5.2 - 2016-11-21: "Bitcoin Savings & Trust Daily Interest II"