tprotocol: Keep chain tip state. - obelisk - Electrum server using libbitcoin as its backend

git clone https://git.parazyd.org/obelisk

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---

commit 90a851773b817fdc4d19bcd2d1bc72c4e8905c8d

parent b9f545ba5ccef32b51b7cc5e32f95891716d0aa2

Author: parazyd 

Date:   Mon, 19 Apr 2021 12:18:45 +0200

protocol: Keep chain tip state.

Diffstat:
  M obelisk/protocol.py                 |       3 +++

1 file changed, 3 insertions(+), 0 deletions(-)
---

diff --git a/obelisk/protocol.py b/obelisk/protocol.py

t@@ -63,6 +63,7 @@ class ElectrumProtocol(asyncio.Protocol):  # pylint: disable=R0904,R0902
         self.endpoints = endpoints
         self.server_cfg = server_cfg
         self.loop = asyncio.get_event_loop()
+        self.chain_tip = 0
         # Consider renaming bx to something else
         self.bx = Client(log, endpoints, self.loop)
         self.block_queue = None
t@@ -307,6 +308,7 @@ class ElectrumProtocol(asyncio.Protocol):  # pylint: disable=R0904,R0902
                 self.log.debug("error: item from block queue len != 3")
                 continue
 
+            self.chain_tip = item[1]
             header = block_to_header(item[2])
             params = [{"height": item[1], "hex": safe_hexlify(header)}]
             await self._send_notification(writer,
t@@ -327,6 +329,7 @@ class ElectrumProtocol(asyncio.Protocol):  # pylint: disable=R0904,R0902
             self.log.debug("Got error: %s", repr(_ec))
             return JsonRPCError.internalerror()
 
+        self.chain_tip = height
         self.tasks.append(asyncio.create_task(self.header_notifier(writer)))
         ret = {"height": height, "hex": safe_hexlify(tip_header)}
         return {"result": ret}