60 lines
1.9 KiB
Python
60 lines
1.9 KiB
Python
from typing import Dict, Sequence
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from libp2p.stream_muxer.mplex.mplex import Mplex
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from libp2p.security.security_multistream import SecurityMultistream, TProtocol
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from libp2p.network.connection.raw_connection_interface import IRawConnection
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from libp2p.network.swarm import GenericProtocolHandlerFn
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from libp2p.peer.id import ID
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from libp2p.security.secure_conn_interface import ISecureConn
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from libp2p.security.secure_transport_interface import ISecureTransport
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from .transport_interface import ITransport
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from .listener_interface import IListener
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class TransportUpgrader:
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security_multistream: SecurityMultistream
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muxer: Sequence[str]
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def __init__(
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self, secOpt: Dict[TProtocol, ISecureTransport], muxerOpt: Sequence[str]
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) -> None:
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# Store security option
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self.security_multistream = SecurityMultistream()
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for key in secOpt:
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self.security_multistream.add_transport(key, secOpt[key])
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# Store muxer option
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self.muxer = muxerOpt
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def upgrade_listener(self, transport: ITransport, listeners: IListener) -> None:
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"""
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Upgrade multiaddr listeners to libp2p-transport listeners
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"""
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pass
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async def upgrade_security(
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self, raw_conn: IRawConnection, peer_id: ID, initiator: bool
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) -> ISecureConn:
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"""
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Upgrade conn to be a secured connection
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"""
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if initiator:
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return await self.security_multistream.secure_outbound(raw_conn, peer_id)
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return await self.security_multistream.secure_inbound(raw_conn)
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@staticmethod
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def upgrade_connection(
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conn: IRawConnection,
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generic_protocol_handler: GenericProtocolHandlerFn,
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peer_id: ID,
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) -> Mplex:
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"""
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Upgrade raw connection to muxed connection
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"""
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# For PoC, no security, default to mplex
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# TODO do exchange to determine multiplexer
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return Mplex(conn, generic_protocol_handler, peer_id)
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