py-libp2p/tests/libp2p/test_libp2p.py
2019-01-09 21:38:56 +03:00

155 lines
5.2 KiB
Python

import multiaddr
import pytest
from libp2p import new_node
from libp2p.peer.peerinfo import info_from_p2p_addr
@pytest.mark.asyncio
async def test_simple_messages():
node_a = await new_node(transport_opt=["/ip4/127.0.0.1/tcp/0"])
node_b = await new_node(transport_opt=["/ip4/127.0.0.1/tcp/0"])
async def stream_handler(stream):
while True:
read_string = (await stream.read()).decode()
print("host B received:" + read_string)
response = "ack:" + read_string
print("sending response:" + response)
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())
response = (await stream.read()).decode()
print("res: " + response)
assert response == ("ack:" + message)
# Success, terminate pending tasks.
return
@pytest.mark.asyncio
async def test_double_response():
node_a = await new_node(transport_opt=["/ip4/127.0.0.1/tcp/0"])
node_b = await new_node(transport_opt=["/ip4/127.0.0.1/tcp/0"])
async def stream_handler(stream):
while True:
read_string = (await stream.read()).decode()
print("host B received:" + read_string)
response = "ack1:" + read_string
print("sending response:" + response)
await stream.write(response.encode())
response = "ack2:" + read_string
print("sending response:" + response)
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)
print("node_a about to open stream")
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())
response1 = (await stream.read()).decode()
print("res1: " + response1)
assert response1 == ("ack1:" + message)
response2 = (await stream.read()).decode()
print("res2: " + response2)
assert response2 == ("ack2:" + message)
# Success, terminate pending tasks.
return
@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
node_a = await new_node(transport_opt=["/ip4/127.0.0.1/tcp/0"])
node_b = await new_node(transport_opt=["/ip4/127.0.0.1/tcp/0"])
async def stream_handler_a(stream):
while True:
read_string = (await stream.read()).decode()
response = "ack_a:" + read_string
await stream.write(response.encode())
async def stream_handler_b(stream):
while True:
read_string = (await stream.read()).decode()
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())
response_a = (await stream_a.read()).decode()
response_b = (await stream_b.read()).decode()
assert response_a == ("ack_b:" + a_message) and response_b == ("ack_a:" + b_message)
# Success, terminate pending tasks.
return
@pytest.mark.asyncio
async def test_host_connect():
node_a = await new_node(transport_opt=["/ip4/127.0.0.1/tcp/0"])
node_b = await new_node(transport_opt=["/ip4/127.0.0.1/tcp/0"])
assert not node_a.get_peerstore().peers()
addr = node_b.get_addrs()[0]
info = info_from_p2p_addr(addr)
await node_a.connect(info)
assert len(node_a.get_peerstore().peers()) == 1
await node_a.connect(info)
# make sure we don't do double connection
assert len(node_a.get_peerstore().peers()) == 1
assert node_b.get_id() in node_a.get_peerstore().peers()
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()