def connect(self):
af = socket.AF_UNSPEC
addrinfo = socket.getaddrinfo(
self.host, self.port, af,
socket.SOCK_STREAM,
0, 0)
af, socktype, proto, canonname, sockaddr = addrinfo[0]
self.stream = IOStream(
socket.socket(af, socktype, proto),
self.io_loop,
max_buffer_size=self.MAX_BUF,
)
self.stream.connect(sockaddr, self.connected)
self.request = NR()
self.proto = WS(self)
def _execute(self, transforms, *args, **kwargs):
from tornado.websocket import WebSocketProtocol8, WebSocketProtocol76
self.open_args = args
self.open_kwargs = kwargs
# The difference between version 8 and 13 is that in 8 the
# client sends a "Sec-Websocket-Origin" header and in 13 it's
# simply "Origin".
if self.request.headers.get("Sec-WebSocket-Version") in ("7", "8", "13"):
self.ws_connection = WebSocketProtocol8(self)
self.ws_connection.accept_connection()
elif self.request.headers.get("Sec-WebSocket-Version"):
self.stream.write(tornado.escape.utf8(
"HTTP/1.1 426 Upgrade Required\r\n"
"Sec-WebSocket-Version: 8\r\n\r\n"))
self.stream.close()
else:
self.ws_connection = WebSocketProtocol76(self)
self.ws_connection.accept_connection()
class Connector(object):
MAX_BUF = 104857600
def __init__(self, host, port):
self.host, self.port = host, port
self.io_loop = ioloop.IOLoop()
self.key = str(uuid4())
self.connect()
def connect(self):
af = socket.AF_UNSPEC
addrinfo = socket.getaddrinfo(
self.host, self.port, af,
socket.SOCK_STREAM,
0, 0)
af, socktype, proto, canonname, sockaddr = addrinfo[0]
self.stream = IOStream(
socket.socket(af, socktype, proto),
self.io_loop,
max_buffer_size=self.MAX_BUF,
)
self.stream.connect(sockaddr, self.connected)
self.request = NR()
self.proto = WS(self)
def connected(self):
request_lines = [
utf8("%s %s HTTP/1.1" % ('GET', '/events'))
]
headers = (
("Host", "%s:%d" %(self.host,self.port)),
("Upgrade", "websocket"),
("Connection", "Upgrade"),
("Sec-Websocket-Version", 8),
("Sec-Websocket-Key", self.key,),
)
for k, v in headers:
request_lines.append("%s: %s" % (k,v))
self.stream.write(b("\r\n").join(request_lines) + b("\r\n\r\n"))
self.stream.read_until(b("\r\n\r\n"), self._upgraded)
def _upgraded(self, data):
data = native_str(data.decode("latin1"))
first_line, _, header_data = data.partition("\n")
match = re.match("HTTP/1.[01] ([0-9]+)", first_line)
assert match
code = int(match.group(1))
headers = HTTPHeaders.parse(header_data)
self.accept = headers.get('Sec-Websocket-Accept')
self.open()
self.proto._receive_frame()
def write_message(self, data):
self.proto.write_message(data)