September Morn Update

Task/Echo-server/Python/echo-server-2.py

@@ -0,0 +1,34 @@
+#!/usr/bin/env python
+# $ printf 'echo\r\n' | nc localhost 12321
+# echo
+import asyncio
+import logging
+import os
+
+logger = logging.getLogger('echoserver')
+
+async def echo_handler(reader, writer):
+  address = writer.get_extra_info('peername')
+  logger.debug('accept: %s', address)
+  message = await reader.readline()
+  writer.write(message)
+  await writer.drain()
+  writer.close()
+
+if __name__ == '__main__':
+  logging.basicConfig()
+  logger.setLevel(logging.DEBUG)
+  loop = asyncio.get_event_loop()
+  factory = asyncio.start_server(
+    echo_handler,
+    os.environ.get('HOST'),
+    os.environ.get('PORT', 12321)
+  )
+  server = loop.run_until_complete(factory)
+  try:
+    loop.run_forever()
+  except KeyboardInterrupt:
+    pass
+  server.close()
+  loop.run_until_complete(server.wait_closed())
+  loop.close()