socketify.py/examples/backpressure.py

49 wiersze
1.2 KiB
Python

from socketify import App, AppOptions, OpCode, CompressOptions
# Number between ok and not ok
backpressure = 1024
# Used for statistics
messages = 0
message_number = 0
def ws_open(ws):
print("A WebSocket got connected!")
# We begin our example by sending until we have backpressure
global message_number
global messages
while ws.get_buffered_amount() < backpressure:
ws.send("This is a message, let's call it %i" % message_number)
message_number = message_number + 1
messages = messages + 1
def ws_drain(ws):
# Continue sending when we have drained (some)
global message_number
global messages
while ws.get_buffered_amount() < backpressure:
ws.send("This is a message, let's call it %i" % message_number)
message_number = message_number + 1
messages = messages + 1
app = App()
app.ws(
"/*",
{
"compression": CompressOptions.DISABLED,
"max_payload_length": 16 * 1024 * 1024,
"idle_timeout": 60,
"open": ws_open,
"drain": ws_drain,
},
)
app.any("/", lambda res, req: res.end("Nothing to see here!"))
app.listen(
3000,
lambda config: print("Listening on port http://localhost:%d now\n" % (config.port)),
)
app.run()