py-libp2p/tests/libp2p/test_libp2p.py

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import pytest
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from libp2p.libp2p import *
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@pytest.mark.asyncio
async def test_simple_messages():
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hostA = await new_node(transport_opt=["/ip4/127.0.0.1/tcp/8001/ipfs/hostA"])
hostB = await new_node(transport_opt=["/ip4/127.0.0.1/tcp/8000/ipfs/hostB"])
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async def stream_handler(stream):
while True:
read_string = (await stream.read()).decode()
print("host B received:" + read_string)
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response = "ack:" + read_string
print("sending response:" + response)
await stream.write(response.encode())
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hostB.set_stream_handler("/echo/1.0.0", stream_handler)
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# Associate the peer with local ip address (see default parameters of Libp2p())
hostA.get_peerstore().add_addr("hostB", "/ip4/127.0.0.1/tcp/8000", 10)
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stream = await hostA.new_stream("hostB", "/echo/1.0.0")
messages = ["hello" + str(x) for x in range(10)]
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for message in messages:
await stream.write(message.encode())
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response = (await stream.read()).decode()
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print("res: " + response)
assert response == ("ack:" + message)
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# Success, terminate pending tasks.
return