32 lines
1006 B
Python
32 lines
1006 B
Python
"""
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Create bitmessage protocol command packets
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"""
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import struct
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import addresses
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from network.constants import MAX_ADDR_COUNT
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from network.node import Peer
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from protocol import CreatePacket, encodeHost
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def assemble_addr(peerList):
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"""Create address command"""
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if isinstance(peerList, Peer):
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peerList = [peerList]
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if not peerList:
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return b''
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retval = b''
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for i in range(0, len(peerList), MAX_ADDR_COUNT):
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payload = addresses.encodeVarint(len(peerList[i:i + MAX_ADDR_COUNT]))
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for stream, peer, timestamp in peerList[i:i + MAX_ADDR_COUNT]:
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# 64-bit time
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payload += struct.pack('>Q', timestamp)
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payload += struct.pack('>I', stream)
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# service bit flags offered by this node
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payload += struct.pack('>q', 1)
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payload += encodeHost(peer.host)
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# remote port
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payload += struct.pack('>H', peer.port)
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retval += CreatePacket('addr', payload)
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return retval
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