py-libp2p/tests/libp2p/test_libp2p.py

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import multiaddr
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import pytest
import trio
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from libp2p.peer.peerinfo import info_from_p2p_addr
from libp2p.tools.constants import MAX_READ_LEN
from libp2p.tools.utils import set_up_nodes_by_transport_opt
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@pytest.mark.trio
async def test_simple_messages(nursery):
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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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(node_a, node_b) = await set_up_nodes_by_transport_opt(transport_opt_list, nursery)
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async def stream_handler(stream):
while True:
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read_string = (await stream.read(MAX_READ_LEN)).decode()
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response = "ack:" + read_string
await stream.write(response.encode())
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node_b.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())
node_a.get_peerstore().add_addrs(node_b.get_id(), node_b.get_addrs(), 10)
stream = await node_a.new_stream(node_b.get_id(), ["/echo/1.0.0"])
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messages = ["hello" + str(x) for x in range(10)]
for message in messages:
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await stream.write(message.encode())
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response = (await stream.read(MAX_READ_LEN)).decode()
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assert response == ("ack:" + message)
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# Success, terminate pending tasks.
@pytest.mark.asyncio
async def test_double_response():
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transport_opt_list = [["/ip4/127.0.0.1/tcp/0"], ["/ip4/127.0.0.1/tcp/0"]]
(node_a, node_b) = await set_up_nodes_by_transport_opt(transport_opt_list)
async def stream_handler(stream):
while True:
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read_string = (await stream.read(MAX_READ_LEN)).decode()
response = "ack1:" + read_string
await stream.write(response.encode())
response = "ack2:" + read_string
await stream.write(response.encode())
node_b.set_stream_handler("/echo/1.0.0", stream_handler)
# Associate the peer with local ip address (see default parameters of Libp2p())
node_a.get_peerstore().add_addrs(node_b.get_id(), node_b.get_addrs(), 10)
stream = await node_a.new_stream(node_b.get_id(), ["/echo/1.0.0"])
messages = ["hello" + str(x) for x in range(10)]
for message in messages:
await stream.write(message.encode())
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response1 = (await stream.read(MAX_READ_LEN)).decode()
assert response1 == ("ack1:" + message)
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response2 = (await stream.read(MAX_READ_LEN)).decode()
assert response2 == ("ack2:" + message)
# Success, terminate pending tasks.
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@pytest.mark.asyncio
async def test_multiple_streams():
# Node A should be able to open a stream with node B and then vice versa.
# Stream IDs should be generated uniquely so that the stream state is not overwritten
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transport_opt_list = [["/ip4/127.0.0.1/tcp/0"], ["/ip4/127.0.0.1/tcp/0"]]
(node_a, node_b) = await set_up_nodes_by_transport_opt(transport_opt_list)
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async def stream_handler_a(stream):
while True:
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read_string = (await stream.read(MAX_READ_LEN)).decode()
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response = "ack_a:" + read_string
await stream.write(response.encode())
async def stream_handler_b(stream):
while True:
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read_string = (await stream.read(MAX_READ_LEN)).decode()
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response = "ack_b:" + read_string
await stream.write(response.encode())
node_a.set_stream_handler("/echo_a/1.0.0", stream_handler_a)
node_b.set_stream_handler("/echo_b/1.0.0", stream_handler_b)
# Associate the peer with local ip address (see default parameters of Libp2p())
node_a.get_peerstore().add_addrs(node_b.get_id(), node_b.get_addrs(), 10)
node_b.get_peerstore().add_addrs(node_a.get_id(), node_a.get_addrs(), 10)
stream_a = await node_a.new_stream(node_b.get_id(), ["/echo_b/1.0.0"])
stream_b = await node_b.new_stream(node_a.get_id(), ["/echo_a/1.0.0"])
# A writes to /echo_b via stream_a, and B writes to /echo_a via stream_b
messages = ["hello" + str(x) for x in range(10)]
for message in messages:
a_message = message + "_a"
b_message = message + "_b"
await stream_a.write(a_message.encode())
await stream_b.write(b_message.encode())
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response_a = (await stream_a.read(MAX_READ_LEN)).decode()
response_b = (await stream_b.read(MAX_READ_LEN)).decode()
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assert response_a == ("ack_b:" + a_message) and response_b == (
"ack_a:" + b_message
)
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# Success, terminate pending tasks.
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@pytest.mark.asyncio
async def test_multiple_streams_same_initiator_different_protocols():
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transport_opt_list = [["/ip4/127.0.0.1/tcp/0"], ["/ip4/127.0.0.1/tcp/0"]]
(node_a, node_b) = await set_up_nodes_by_transport_opt(transport_opt_list)
async def stream_handler_a1(stream):
while True:
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read_string = (await stream.read(MAX_READ_LEN)).decode()
response = "ack_a1:" + read_string
await stream.write(response.encode())
async def stream_handler_a2(stream):
while True:
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read_string = (await stream.read(MAX_READ_LEN)).decode()
response = "ack_a2:" + read_string
await stream.write(response.encode())
async def stream_handler_a3(stream):
while True:
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read_string = (await stream.read(MAX_READ_LEN)).decode()
response = "ack_a3:" + read_string
await stream.write(response.encode())
node_b.set_stream_handler("/echo_a1/1.0.0", stream_handler_a1)
node_b.set_stream_handler("/echo_a2/1.0.0", stream_handler_a2)
node_b.set_stream_handler("/echo_a3/1.0.0", stream_handler_a3)
# Associate the peer with local ip address (see default parameters of Libp2p())
node_a.get_peerstore().add_addrs(node_b.get_id(), node_b.get_addrs(), 10)
node_b.get_peerstore().add_addrs(node_a.get_id(), node_a.get_addrs(), 10)
# Open streams to node_b over echo_a1 echo_a2 echo_a3 protocols
stream_a1 = await node_a.new_stream(node_b.get_id(), ["/echo_a1/1.0.0"])
stream_a2 = await node_a.new_stream(node_b.get_id(), ["/echo_a2/1.0.0"])
stream_a3 = await node_a.new_stream(node_b.get_id(), ["/echo_a3/1.0.0"])
messages = ["hello" + str(x) for x in range(10)]
for message in messages:
a1_message = message + "_a1"
a2_message = message + "_a2"
a3_message = message + "_a3"
await stream_a1.write(a1_message.encode())
await stream_a2.write(a2_message.encode())
await stream_a3.write(a3_message.encode())
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response_a1 = (await stream_a1.read(MAX_READ_LEN)).decode()
response_a2 = (await stream_a2.read(MAX_READ_LEN)).decode()
response_a3 = (await stream_a3.read(MAX_READ_LEN)).decode()
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assert (
response_a1 == ("ack_a1:" + a1_message)
and response_a2 == ("ack_a2:" + a2_message)
and response_a3 == ("ack_a3:" + a3_message)
)
# Success, terminate pending tasks.
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@pytest.mark.asyncio
async def test_multiple_streams_two_initiators():
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transport_opt_list = [["/ip4/127.0.0.1/tcp/0"], ["/ip4/127.0.0.1/tcp/0"]]
(node_a, node_b) = await set_up_nodes_by_transport_opt(transport_opt_list)
async def stream_handler_a1(stream):
while True:
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read_string = (await stream.read(MAX_READ_LEN)).decode()
response = "ack_a1:" + read_string
await stream.write(response.encode())
async def stream_handler_a2(stream):
while True:
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read_string = (await stream.read(MAX_READ_LEN)).decode()
response = "ack_a2:" + read_string
await stream.write(response.encode())
async def stream_handler_b1(stream):
while True:
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read_string = (await stream.read(MAX_READ_LEN)).decode()
response = "ack_b1:" + read_string
await stream.write(response.encode())
async def stream_handler_b2(stream):
while True:
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read_string = (await stream.read(MAX_READ_LEN)).decode()
response = "ack_b2:" + read_string
await stream.write(response.encode())
node_a.set_stream_handler("/echo_b1/1.0.0", stream_handler_b1)
node_a.set_stream_handler("/echo_b2/1.0.0", stream_handler_b2)
node_b.set_stream_handler("/echo_a1/1.0.0", stream_handler_a1)
node_b.set_stream_handler("/echo_a2/1.0.0", stream_handler_a2)
# Associate the peer with local ip address (see default parameters of Libp2p())
node_a.get_peerstore().add_addrs(node_b.get_id(), node_b.get_addrs(), 10)
node_b.get_peerstore().add_addrs(node_a.get_id(), node_a.get_addrs(), 10)
stream_a1 = await node_a.new_stream(node_b.get_id(), ["/echo_a1/1.0.0"])
stream_a2 = await node_a.new_stream(node_b.get_id(), ["/echo_a2/1.0.0"])
stream_b1 = await node_b.new_stream(node_a.get_id(), ["/echo_b1/1.0.0"])
stream_b2 = await node_b.new_stream(node_a.get_id(), ["/echo_b2/1.0.0"])
# A writes to /echo_b via stream_a, and B writes to /echo_a via stream_b
messages = ["hello" + str(x) for x in range(10)]
for message in messages:
a1_message = message + "_a1"
a2_message = message + "_a2"
b1_message = message + "_b1"
b2_message = message + "_b2"
await stream_a1.write(a1_message.encode())
await stream_a2.write(a2_message.encode())
await stream_b1.write(b1_message.encode())
await stream_b2.write(b2_message.encode())
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response_a1 = (await stream_a1.read(MAX_READ_LEN)).decode()
response_a2 = (await stream_a2.read(MAX_READ_LEN)).decode()
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response_b1 = (await stream_b1.read(MAX_READ_LEN)).decode()
response_b2 = (await stream_b2.read(MAX_READ_LEN)).decode()
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assert (
response_a1 == ("ack_a1:" + a1_message)
and response_a2 == ("ack_a2:" + a2_message)
and response_b1 == ("ack_b1:" + b1_message)
and response_b2 == ("ack_b2:" + b2_message)
)
# Success, terminate pending tasks.
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@pytest.mark.asyncio
async def test_triangle_nodes_connection():
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transport_opt_list = [
["/ip4/127.0.0.1/tcp/0"],
["/ip4/127.0.0.1/tcp/0"],
["/ip4/127.0.0.1/tcp/0"],
]
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(node_a, node_b, node_c) = await set_up_nodes_by_transport_opt(transport_opt_list)
async def stream_handler(stream):
while True:
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read_string = (await stream.read(MAX_READ_LEN)).decode()
response = "ack:" + read_string
await stream.write(response.encode())
node_a.set_stream_handler("/echo/1.0.0", stream_handler)
node_b.set_stream_handler("/echo/1.0.0", stream_handler)
node_c.set_stream_handler("/echo/1.0.0", stream_handler)
# Associate the peer with local ip address (see default parameters of Libp2p())
# Associate all permutations
node_a.get_peerstore().add_addrs(node_b.get_id(), node_b.get_addrs(), 10)
node_a.get_peerstore().add_addrs(node_c.get_id(), node_c.get_addrs(), 10)
node_b.get_peerstore().add_addrs(node_a.get_id(), node_a.get_addrs(), 10)
node_b.get_peerstore().add_addrs(node_c.get_id(), node_c.get_addrs(), 10)
node_c.get_peerstore().add_addrs(node_a.get_id(), node_a.get_addrs(), 10)
node_c.get_peerstore().add_addrs(node_b.get_id(), node_b.get_addrs(), 10)
stream_a_to_b = await node_a.new_stream(node_b.get_id(), ["/echo/1.0.0"])
stream_a_to_c = await node_a.new_stream(node_c.get_id(), ["/echo/1.0.0"])
stream_b_to_a = await node_b.new_stream(node_a.get_id(), ["/echo/1.0.0"])
stream_b_to_c = await node_b.new_stream(node_c.get_id(), ["/echo/1.0.0"])
stream_c_to_a = await node_c.new_stream(node_a.get_id(), ["/echo/1.0.0"])
stream_c_to_b = await node_c.new_stream(node_b.get_id(), ["/echo/1.0.0"])
messages = ["hello" + str(x) for x in range(5)]
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streams = [
stream_a_to_b,
stream_a_to_c,
stream_b_to_a,
stream_b_to_c,
stream_c_to_a,
stream_c_to_b,
]
for message in messages:
for stream in streams:
await stream.write(message.encode())
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response = (await stream.read(MAX_READ_LEN)).decode()
assert response == ("ack:" + message)
# Success, terminate pending tasks.
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@pytest.mark.asyncio
async def test_host_connect():
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transport_opt_list = [["/ip4/127.0.0.1/tcp/0"], ["/ip4/127.0.0.1/tcp/0"]]
(node_a, node_b) = await set_up_nodes_by_transport_opt(transport_opt_list)
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assert not node_a.get_peerstore().peer_ids()
addr = node_b.get_addrs()[0]
info = info_from_p2p_addr(addr)
await node_a.connect(info)
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assert len(node_a.get_peerstore().peer_ids()) == 1
await node_a.connect(info)
# make sure we don't do double connection
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assert len(node_a.get_peerstore().peer_ids()) == 1
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assert node_b.get_id() in node_a.get_peerstore().peer_ids()
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ma_node_b = multiaddr.Multiaddr("/p2p/%s" % node_b.get_id().pretty())
for addr in node_a.get_peerstore().addrs(node_b.get_id()):
assert addr.encapsulate(ma_node_b) in node_b.get_addrs()
# Success, terminate pending tasks.