105 lines
3.3 KiB
Python
Executable File
105 lines
3.3 KiB
Python
Executable File
#!/usr/bin/env python3
|
|
import asyncio
|
|
import sys
|
|
from os.path import abspath, dirname
|
|
|
|
import click
|
|
|
|
from libp2p.libp2p import *
|
|
from network.multiaddr import MultiAddr
|
|
from peer.peerinfo import info_from_p2p_addr
|
|
|
|
sys.path.append(dirname(dirname(dirname(abspath(__file__)))))
|
|
|
|
|
|
PROTOCOL_ID = '/chat/1.0.0'
|
|
|
|
|
|
async def read_data(stream):
|
|
while True:
|
|
read_string = (await stream.read()).decode()
|
|
|
|
if not read_string:
|
|
return
|
|
|
|
if read_string != "\n":
|
|
# Green console colour: \x1b[32m
|
|
# Reset console colour: \x1b[0m
|
|
print("\x1b[32m%s\x1b[0m> " % read_string, end="")
|
|
|
|
|
|
async def write_data(stream):
|
|
loop = asyncio.get_event_loop()
|
|
|
|
while True:
|
|
line = await loop.run_in_executor(None, sys.stdin.readline)
|
|
await stream.write(line.encode())
|
|
|
|
|
|
async def run(port, destination):
|
|
|
|
if not destination:
|
|
host = await new_node(transport_opt=["/ip4/127.0.0.1/tcp/%s" % port])
|
|
|
|
async def stream_handler(stream):
|
|
asyncio.ensure_future(read_data(stream))
|
|
asyncio.ensure_future(write_data(stream))
|
|
|
|
host.set_stream_handler(PROTOCOL_ID, stream_handler)
|
|
|
|
port = None
|
|
for listener in host.network.listeners.values():
|
|
for addr in listener.get_addrs():
|
|
port = int(addr.value_for_protocol('tcp'))
|
|
|
|
if not port:
|
|
raise RuntimeError("was not able to find the actual local port")
|
|
|
|
print("Run './examples/chat/chat.py --port %s -d /ip4/127.0.0.1/tcp/%s/p2p/%s' on another console.\n" %
|
|
(int(port)+1, port, host.get_id().pretty()))
|
|
print("You can replace 127.0.0.1 with public IP as well.")
|
|
print("\nWaiting for incoming connection\n\n")
|
|
|
|
else:
|
|
host = await new_node(transport_opt=["/ip4/127.0.0.1/tcp/%s" % port])
|
|
|
|
m = multiaddr.Multiaddr(destination)
|
|
info = info_from_p2p_addr(m)
|
|
# Associate the peer with local ip address
|
|
await host.connect(info)
|
|
|
|
# Start a stream with the destination.
|
|
# Multiaddress of the destination peer is fetched from the peerstore using 'peerId'.
|
|
stream = await host.new_stream(info.peer_id, [PROTOCOL_ID])
|
|
|
|
asyncio.ensure_future(read_data(stream))
|
|
asyncio.ensure_future(write_data(stream))
|
|
print("Already connected to peer %s" % info.addrs[0])
|
|
|
|
|
|
@click.command()
|
|
@click.option('--port', help='source port number', default=8000)
|
|
@click.option('--destination', '-d', help="Destination multiaddr string")
|
|
@click.option('--help', is_flag=True, default=False, help='display help')
|
|
# @click.option('--debug', is_flag=True, default=False, help='Debug generates the same node ID on every execution')
|
|
def main(port, destination, help):
|
|
|
|
if help:
|
|
print("This program demonstrates a simple p2p chat application using libp2p\n\n")
|
|
print("Usage: Run './chat -sp <SOURCE_PORT>' where <SOURCE_PORT> can be any port number.")
|
|
print("Now run './chat -d <MULTIADDR>' where <MULTIADDR> is multiaddress of previous listener host.")
|
|
return
|
|
|
|
loop = asyncio.get_event_loop()
|
|
try:
|
|
asyncio.ensure_future(run(port, destination))
|
|
loop.run_forever()
|
|
except KeyboardInterrupt:
|
|
pass
|
|
finally:
|
|
loop.close()
|
|
|
|
|
|
if __name__ == '__main__':
|
|
main()
|