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network: request checkpoint when opening a new connection

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This commit is contained in:
ThomasV
2017-03-29 17:21:18 +02:00
parent f46b403a8d
commit d371e1c807
2 changed files with 13 additions and 2 deletions
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8
lib/network.py
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@@ -693,6 +693,7 @@ class Network(util.DaemonThread):
def new_interface(self, server, socket):
self.add_recent_server(server)
self.interfaces[server] = interface = Interface(server, socket)
self.queue_request('blockchain.block.get_header', [self.blockchain.checkpoint_height], interface)
self.queue_request('blockchain.headers.subscribe', [], interface)
if server == self.default_server:
self.switch_to_interface(server)
@@ -774,6 +775,11 @@ class Network(util.DaemonThread):
def on_get_header(self, interface, response):
'''Handle receiving a single block header'''
# close connection if header does not pass checkpoint
if not self.blockchain.pass_checkpoint(response['result']):
interface.print_error("header did not pass checkpoint, dismissing interface", interface.host)
self.connection_down(interface.server)
return
if self.blockchain.downloading_headers:
return
if self.bc_requests:
@@ -790,7 +796,7 @@ class Network(util.DaemonThread):
self.notify('updated')
else:
interface.print_error("header didn't connect, dismissing interface")
interface.close()
self.connection_down(interface.server)
else:
self.request_header(interface, data, next_height)