run stdin reading in its own thread to no block the event loop

chat.py

@@ -1,13 +1,17 @@
 #!/bin/env python3
 import asyncio
+import sys
 
 import click
+
 from libp2p.libp2p import Libp2p
 from network.multiaddr import MultiAddr
 
+
 # TODO: change once muxed_connection supports extracting protocol id from messages
 PROTOCOL_ID = '/echo/1.0.0'
 
+
 async def read_data(stream):
     while True:
         read_string = (await stream.read()).decode()
@@ -18,13 +22,15 @@ async def read_data(stream):
         if read_string != "\n":
             # Green console colour: 	\x1b[32m
             # Reset console colour: 	\x1b[0m
-            print("\x1b[32m%s\x1b[0m> " % read_string)
+            print("\x1b[32m%s\x1b[0m" % read_string)
+
 
 async def write_data(stream):
-    while True:
-        s = input('> ')
-        await stream.write(s.encode())
+    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):
@@ -50,7 +56,6 @@ async def run(port, destination):
         if not port:
             raise RuntimeError("was not able to find the actual local port")
 
-
         print("Run './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")
@@ -75,6 +80,7 @@ async def run(port, destination):
         asyncio.ensure_future(read_data(stream))
         asyncio.ensure_future(write_data(stream))
 
+
 @click.command()
 @click.option('--port', help='source port number', default=8000)
 @click.option('--destination', '-d', help="Destination multiaddr string")
@@ -97,5 +103,6 @@ def main(port, destination, help):
     finally:
         loop.close()
 
+
 if __name__ == '__main__':
     main()