network: do not wait for headers file on startup
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73390f1769
commit
1358bebd37
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@ -44,9 +44,14 @@ class Blockchain(util.PrintError):
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return self.local_height
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def init(self):
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self.init_headers_file()
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self.set_local_height()
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self.print_error("%d blocks" % self.local_height)
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import threading
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if os.path.exists(self.path()):
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self.downloading_headers = False
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return
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self.downloading_headers = True
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t = threading.Thread(target = self.init_headers_file)
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t.daemon = True
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t.start()
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def verify_header(self, header, prev_header, bits, target):
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prev_hash = self.hash_header(prev_header)
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@ -107,8 +112,6 @@ class Blockchain(util.PrintError):
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def init_headers_file(self):
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filename = self.path()
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if os.path.exists(filename):
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return
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try:
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import urllib, socket
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socket.setdefaulttimeout(30)
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@ -119,6 +122,9 @@ class Blockchain(util.PrintError):
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except Exception:
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self.print_error("download failed. creating file", filename)
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open(filename, 'wb+').close()
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self.downloading_headers = False
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self.set_local_height()
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self.print_error("%d blocks" % self.local_height)
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def save_chunk(self, index, chunk):
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filename = self.path()
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@ -747,6 +747,8 @@ class Network(util.DaemonThread):
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def on_get_header(self, interface, response):
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'''Handle receiving a single block header'''
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if self.blockchain.downloading_headers:
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return
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if self.bc_requests:
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req_if, data = self.bc_requests[0]
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req_height = data.get('header_height', -1)
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@ -769,6 +771,8 @@ class Network(util.DaemonThread):
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'''Send a request for the next header, or a chunk of them,
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if necessary.
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'''
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if self.blockchain.downloading_headers:
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return False
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local_height, if_height = self.get_local_height(), data['if_height']
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if if_height <= local_height:
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return False
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@ -787,14 +791,13 @@ class Network(util.DaemonThread):
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# If the connection was lost move on
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if not interface in self.interfaces.values():
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continue
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req_time = data.get('req_time')
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if not req_time:
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# No requests sent yet. This interface has a new height.
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# Request headers if it is ahead of our blockchain
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if not self.bc_request_headers(interface, data):
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continue
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elif time.time() - req_time > 10:
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elif time.time() - req_time > 20:
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interface.print_error("blockchain request timed out")
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self.connection_down(interface.server)
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continue
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@ -823,12 +826,7 @@ class Network(util.DaemonThread):
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self.process_responses(interface)
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def run(self):
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import threading
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t = threading.Thread(target = self.blockchain.init)
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t.daemon = True
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t.start()
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while t.isAlive() and self.is_running():
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t.join(1)
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self.blockchain.init()
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while self.is_running():
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self.maintain_sockets()
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self.wait_on_sockets()
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