50 lines
1.8 KiB
Python
50 lines
1.8 KiB
Python
import asyncio
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from libp2p.network.connection.raw_connection_interface import IRawConnection
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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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class SimpleSecurityTransport(ISecureTransport):
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key_phrase: str
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def __init__(self, key_phrase: str) -> None:
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self.key_phrase = key_phrase
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async def secure_inbound(self, conn: IRawConnection) -> ISecureConn:
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"""
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Secure the connection, either locally or by communicating with opposing node via conn,
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for an inbound connection (i.e. we are not the initiator)
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:return: secure connection object (that implements secure_conn_interface)
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"""
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await conn.write(self.key_phrase.encode())
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incoming = (await conn.read()).decode()
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if incoming != self.key_phrase:
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raise Exception(
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"Key phrase differed between nodes. Expected " + self.key_phrase
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)
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return conn
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async def secure_outbound(self, conn: IRawConnection, peer_id: ID) -> ISecureConn:
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"""
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Secure the connection, either locally or by communicating with opposing node via conn,
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for an inbound connection (i.e. we are the initiator)
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:return: secure connection object (that implements secure_conn_interface)
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"""
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await conn.write(self.key_phrase.encode())
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incoming = (await conn.read()).decode()
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# Force context switch, as this security transport is built for testing locally
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# in a single event loop
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await asyncio.sleep(0)
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if incoming != self.key_phrase:
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raise Exception(
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"Key phrase differed between nodes. Expected " + self.key_phrase
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)
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return conn
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