def cb(timeout):
self.requestBlocks_dcall = None
# Pick one of the hashes randomly
try:
bhash = self.req_blocks.peek()
except KeyError:
return
# Build request packet
packet = ['bQ']
packet.append(self.main.osm.me.ipp)
packet.append(bhash)
# Send to bridge
ad = Ad().setRawIPPort(self.parent_n.ipp)
self.main.ph.sendPacket(''.join(packet), ad.getAddrTuple())
# Too many failures, just give up
if timeout > 30.0:
self.req_blocks.clear()
return
# Schedule next request.
# This will become immediate if a reply arrives.
when = random.uniform(0.9, 1.1) * timeout
timeout *= 1.2
self.requestBlocks_dcall = reactor.callLater(when, cb, timeout)
def cb(timeout):
self.requestBlocks_dcall = None
# Pick one of the hashes randomly
try:
bhash = self.req_blocks.peek()
except KeyError:
return
# Build request packet
packet = ['bQ']
packet.append(self.main.osm.me.ipp)
packet.append(bhash)
# Send to bridge
ad = Ad().setRawIPPort(self.parent_n.ipp)
self.main.ph.sendPacket(''.join(packet), ad.getAddrTuple())
# Too many failures, just give up
if timeout > 30.0:
self.req_blocks.clear()
return
# Schedule next request.
# This will become immediate if a reply arrives.
when = random.uniform(0.9, 1.1) * timeout
timeout *= 1.2
self.requestBlocks_dcall = reactor.callLater(when, cb, timeout)
def receivedBlockRequest(self, src_ipp, bhash):
try:
b = self.cached_blocks[bhash]
except KeyError:
LOG.warning("Requested block not found")
return
b.scheduleExpire(self.cached_blocks, bhash)
packet = ['bB']
packet.append(self.main.osm.me.ipp)
packet.append(struct.pack('!H', len(b.data)))
packet.append(b.data)
ad = Ad().setRawIPPort(src_ipp)
self.main.ph.sendPacket(''.join(packet), ad.getAddrTuple())
def receivedBlockRequest(self, src_ipp, bhash):
try:
b = self.cached_blocks[bhash]
except KeyError:
LOG.warning("Requested block not found")
return
b.scheduleExpire(self.cached_blocks, bhash)
packet = ['bB']
packet.append(self.main.osm.me.ipp)
packet.append(struct.pack('!H', len(b.data)))
packet.append(b.data)
ad = Ad().setRawIPPort(src_ipp)
self.main.ph.sendPacket(''.join(packet), ad.getAddrTuple())
def sendSyncReply(self, src_ipp, cont, uncont):
# This gets spliced into the SyncRequestRoutingManager
ad = Ad().setRawIPPort(src_ipp)
osm = self.main.osm
# Build Packet
packet = ['bY']
# My IP:Port
packet.append(osm.me.ipp)
# seqnum, expire time, session id, uptime, flags, hashes, pubkey
block_hashes, blocks = self.getStateData(packet)
# Contacted Nodes
packet.append(struct.pack('!B', len(cont)))
packet.extend(cont)
# Uncontacted Nodes
packet.append(struct.pack('!B', len(uncont)))
packet.extend(uncont)
# Signature
self.signPacket(packet, broadcast=False)
# Send it
self.main.ph.sendPacket(''.join(packet), ad.getAddrTuple())
# Keep track of the data for a while,
# so the node can request it.
for bhash, data in zip(block_hashes, blocks):
try:
b = self.cached_blocks[bhash]
except KeyError:
b = self.cached_blocks[bhash] = self.CachedBlock(data)
b.scheduleExpire(self.cached_blocks, bhash)
def sendSyncReply(self, src_ipp, cont, uncont):
# This gets spliced into the SyncRequestRoutingManager
ad = Ad().setRawIPPort(src_ipp)
osm = self.main.osm
# Build Packet
packet = ['bY']
# My IP:Port
packet.append(osm.me.ipp)
# seqnum, expire time, session id, uptime, flags, hashes, pubkey
block_hashes, blocks = self.getStateData(packet)
# Contacted Nodes
packet.append(struct.pack('!B', len(cont)))
packet.extend(cont)
# Uncontacted Nodes
packet.append(struct.pack('!B', len(uncont)))
packet.extend(uncont)
# Signature
self.signPacket(packet, broadcast=False)
# Send it
self.main.ph.sendPacket(''.join(packet), ad.getAddrTuple())
# Keep track of the data for a while,
# so the node can request it.
for bhash, data in zip(block_hashes, blocks):
try:
b = self.cached_blocks[bhash]
except KeyError:
b = self.cached_blocks[bhash] = self.CachedBlock(data)
b.scheduleExpire(self.cached_blocks, bhash)
