112 lines
3.5 KiB
Python
112 lines
3.5 KiB
Python
import pytest
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import asyncio
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import multiaddr
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from tests.utils import cleanup, set_up_nodes_by_transport_opt
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from libp2p import new_node
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from libp2p.peer.peerinfo import info_from_p2p_addr
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from libp2p.protocol_muxer.multiselect_client import MultiselectClientError
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PROTOCOL_ID = "/chat/1.0.0"
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async def hello_world(host_a, host_b):
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async def stream_handler(stream):
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read = await stream.read()
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assert read == b"hello world from host b"
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await stream.write(b"hello world from host a")
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await stream.close()
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host_a.set_stream_handler(PROTOCOL_ID, stream_handler)
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# Start a stream with the destination.
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# Multiaddress of the destination peer is fetched from the peerstore using 'peerId'.
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stream = await host_b.new_stream(host_a.get_id(), [PROTOCOL_ID])
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await stream.write(b"hello world from host b")
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read = await stream.read()
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assert read == b"hello world from host a"
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await stream.close()
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async def connect_write(host_a, host_b):
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messages = ["data %d" % i for i in range(5)]
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received = []
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async def stream_handler(stream):
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while True:
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try:
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received.append((await stream.read()).decode())
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except Exception: # exception is raised when other side close the stream ?
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break
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host_a.set_stream_handler(PROTOCOL_ID, stream_handler)
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# Start a stream with the destination.
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# Multiaddress of the destination peer is fetched from the peerstore using 'peerId'.
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stream = await host_b.new_stream(host_a.get_id(), [PROTOCOL_ID])
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for message in messages:
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await stream.write(message.encode())
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# Reader needs time due to async reads
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await asyncio.sleep(2)
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await stream.close()
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assert received == messages
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async def connect_read(host_a, host_b):
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messages = [b"data %d" % i for i in range(5)]
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async def stream_handler(stream):
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for message in messages:
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await stream.write(message)
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await stream.close()
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host_a.set_stream_handler(PROTOCOL_ID, stream_handler)
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# Start a stream with the destination.
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# Multiaddress of the destination peer is fetched from the peerstore using 'peerId'.
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stream = await host_b.new_stream(host_a.get_id(), [PROTOCOL_ID])
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received = []
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# while True: Seems the close stream event from the other host is not received
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for _ in range(5):
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try:
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received.append(await stream.read())
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except Exception: # exception is raised when other side close the stream ?
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break
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await stream.close()
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assert received == messages
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async def no_common_protocol(host_a, host_b):
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messages = [b"data %d" % i for i in range(5)]
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async def stream_handler(stream):
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for message in messages:
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await stream.write(message)
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await stream.close()
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host_a.set_stream_handler(PROTOCOL_ID, stream_handler)
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# try to creates a new new with a procotol not known by the other host
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with pytest.raises(MultiselectClientError):
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_ = await host_b.new_stream(host_a.get_id(), ["/fakeproto/0.0.1"])
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@pytest.mark.asyncio
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@pytest.mark.parametrize(
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"test", [(hello_world), (connect_write), (connect_read), (no_common_protocol)]
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)
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async def test_chat(test):
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transport_opt_list = [["/ip4/127.0.0.1/tcp/0"], ["/ip4/127.0.0.1/tcp/0"]]
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(host_a, host_b) = await set_up_nodes_by_transport_opt(transport_opt_list)
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addr = host_a.get_addrs()[0]
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info = info_from_p2p_addr(addr)
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await host_b.connect(info)
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await test(host_a, host_b)
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await cleanup()
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