world!”: #!/usr/bin/env python import asyncio import websockets async def hello(uri): async with websockets.connect(uri) as websocket: await websocket.send("Hello world!") asyncio.get_event_loop().run_until_complete( Write a coroutine that handles a single connection. It receives a websocket protocol instance and the URI path in argument. – Call recv() and send() to receive and send messages at any time. – You may ping() handler. It must be a coroutine accepting two arguments: a WebSocketServerProtocol and the request URI. The host and port arguments, as well as unrecognized keyword arguments, are passed along to create_server()

world!”: #!/usr/bin/env python import asyncio import websockets async def hello(uri): async with websockets.connect(uri) as websocket: await websocket.send("Hello world!") asyncio.get_event_loop().run_until_complete( Write a coroutine that handles a single connection. It receives a websocket protocol instance and the URI path in argument. – Call recv() and send() to receive and send messages at any time. – You may ping() handler. It must be a coroutine accepting two arguments: a WebSocketServerProtocol and the request URI. The host and port arguments, as well as unrecognized keyword arguments, are passed along to create_server()

world!”: #!/usr/bin/env python import asyncio import websockets async def hello(uri): async with websockets.connect(uri) as websocket: await websocket.send("Hello world!") asyncio.get_event_loop().run_until_complete( Write a coroutine that handles a single connection. It receives a websocket protocol instance and the URI path in argument. – Call recv() and send() to receive and send messages at any time. – You may ping() handler. It must be a coroutine accepting two arguments: a WebSocketServerProtocol and the request URI. The host and port arguments, as well as unrecognized keyword arguments, are passed along to create_server()

Write a coroutine that handles a single connection. It receives a websocket protocol instance and the URI path in argument. – Call recv() and send() to receive and send messages at any time. – You may ping() handler. It must be a coroutine accepting two arguments: a WebSocketServerProtocol and the request URI. serve() is a wrapper around the event loop’s create_server() method. host, port as well as extra value) pairs. It can also be a callable taking the request path and headers in arguments. Return the URI of the request. static select_subprotocol(client_protos, server_protos) Pick a subprotocol among

Write a coroutine that handles a single connection. It receives a websocket protocol instance and the URI path in argument. – Call recv() and send() to receive and send messages at any time. – You may ping() handler. It must be a coroutine accepting two arguments: a WebSocketServerProtocol and the request URI. serve() is a wrapper around the event loop’s create_server() method. host, port as well as extra value) pairs. It can also be a callable taking the request path and headers in arguments. Return the URI of the request. select_subprotocol(client_protos, server_protos) Pick a subprotocol among those offered

Write a coroutine that handles a single connection. It receives a websocket protocol instance and the URI path in argument. – Call recv() and send() to receive and send messages at any time. – You may ping() handler. It must be a coroutine accepting two arguments: a WebSocketServerProtocol and the request URI. serve() accepts several optional arguments: •origins defines acceptable Origin HTTP headers — include value) pairs. It can also be a callable taking the request path and headers in arguments. Return the URI of the request. select_subprotocol(client_protos, server_protos) Pick a subprotocol among those offered

Write a coroutine that handles a single connection. It receives a websocket protocol instance and the URI path in argument. – Call recv() and send() to receive and send messages at any time. – You may ping() handler. It must be a coroutine accepting two arguments: a WebSocketServerProtocol and the request URI. The host and port arguments, as well as unrecognized keyword arguments, are passed along to create_server() and headers in arguments. Raise InvalidHandshake or a subclass if the handshake fails. Return the URI of the request. process_request(path, request_headers) Intercept the HTTP request and return an HTTP

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 4.4 URI parser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . #!/usr/bin/env python import asyncio import websockets @asyncio.coroutine def hello(websocket, uri): name = yield from websocket.recv() print("< {}".format(name)) greeting = "Hello {}!".format(name) handler. It must be a coroutine accepting two arguments: a WebSocketServerProtocol and the request URI. The host and port arguments and other keyword ar- guments are passed to create_server. Whenever a

/usr/bin/env python import asyncio import websockets async def hello(): uri = "ws://localhost:8765" async with websockets.connect(uri) as websocket: await websocket.send("Hello world!") await websocket.recv() client example import asyncio import websockets async def hello(): uri = "ws://localhost:8765" async with websockets.connect(uri) as websocket: name = input("What's your name? ") await websocket.send(name) ssl_context.load_verify_locations(localhost_pem) async def hello(): uri = "wss://localhost:8765" async with websockets.connect( uri, ssl=ssl_context ) as websocket: name = input("What's your name? ")

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 4.4 URI parser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . handler. It must be a coroutine accepting two arguments: a WebSocketServerProtocol and the request URI. If provided, origin is a list of acceptable Origin HTTP headers. Include ’’ if the lack of an origin Documentation, Release 2.2.0 Return the URI of the request. 3.2 Client The websockets.client module defines a simple WebSocket client API. websockets.client.connect(uri, *, klass=WebSocketClientProtocol,