URI: 
       tcalc short_channel_id after funding locked - electrum - Electrum Bitcoin wallet
  HTML git clone https://git.parazyd.org/electrum
   DIR Log
   DIR Files
   DIR Refs
   DIR Submodules
       ---
   DIR commit 7ba3f2d54d55937c7e9bdd8340e384b0b9663ade
   DIR parent 6bf2714e3344e0116b0914936d4c2b2fd16058b9
  HTML Author: SomberNight <somber.night@protonmail.com>
       Date:   Tue, 15 May 2018 16:28:32 +0200
       
       calc short_channel_id after funding locked
       
       Diffstat:
         M electrum/address_synchronizer.py    |       4 ++--
         M lib/lnbase.py                       |      20 +++++++++++++++++---
       
       2 files changed, 19 insertions(+), 5 deletions(-)
       ---
   DIR diff --git a/electrum/address_synchronizer.py b/electrum/address_synchronizer.py
       t@@ -397,9 +397,9 @@ class AddressSynchronizer(Logger):
                        return verified_tx_mined_info.height, verified_tx_mined_info.txpos
                    elif tx_hash in self.unverified_tx:
                        height = self.unverified_tx[tx_hash]
       -                return (height, 0) if height > 0 else ((1e9 - height), 0)
       +                return (height, -1) if height > 0 else ((1e9 - height), -1)
                    else:
       -                return (1e9+1, 0)
       +                return (1e9+1, -1)
        
            def with_local_height_cached(func):
                # get local height only once, as it's relatively expensive.
   DIR diff --git a/lib/lnbase.py b/lib/lnbase.py
       t@@ -546,6 +546,14 @@ def make_commitment(ctn, local_funding_pubkey, remote_funding_pubkey, remote_pay
        
            return tx
        
       +
       +def calc_short_channel_id(block_height: int, tx_pos_in_block: int, output_index: int) -> bytes:
       +    bh = block_height.to_bytes(3, byteorder='big')
       +    tpos = tx_pos_in_block.to_bytes(3, byteorder='big')
       +    oi = output_index.to_bytes(2, byteorder='big')
       +    return bh + tpos + oi
       +
       +
        def sign_and_get_sig_string(tx, local_config, remote_config):
            pubkeys = sorted([bh2u(local_config.multisig_key.pubkey), bh2u(remote_config.multisig_key.pubkey)])
            tx.sign({bh2u(local_config.multisig_key.pubkey): (local_config.multisig_key.privkey, True)})
       t@@ -979,17 +987,23 @@ class Peer(PrintError):
                        if conf >= chan.constraints.funding_txn_minimum_depth:
                            async def set_local_funding_locked_result():
                                try:
       -                            self.local_funding_locked[channel_id].set_result(1)
       +                            self.local_funding_locked[channel_id].set_result(short_channel_id)
                                except (asyncio.InvalidStateError, KeyError) as e:
                                    # FIXME race condition if updates come in quickly, set_result might be called multiple times
                                    # or self.local_funding_locked[channel_id] might be deleted already
                                    self.print_error('local_funding_locked.set_result error for channel {}: {}'.format(channel_id, e))
       +                    block_height, tx_pos = wallet.get_txpos(chan.funding_outpoint.txid)
       +                    if tx_pos == -1:
       +                        self.print_error('funding tx is not yet SPV verified.. but there are '
       +                                         'already enough confirmations (currently {})'.format(conf))
       +                        return
       +                    short_channel_id = calc_short_channel_id(block_height, tx_pos, chan.funding_outpoint.output_index)
                            asyncio.run_coroutine_threadsafe(set_local_funding_locked_result(), asyncio.get_event_loop())
                            self.network.unregister_callback(on_network_update)
       -            self.network.register_callback(on_network_update, ['updated']) # thread safe
       +            self.network.register_callback(on_network_update, ['updated', 'verified']) # thread safe
        
                    try:
       -                await self.local_funding_locked[channel_id]
       +                short_channel_id = await self.local_funding_locked[channel_id]
                    finally:
                        del self.local_funding_locked[channel_id]