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Send ping packets to keep connection alive

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Fix #126

Idle WebSocket connections tend to be closed after some period of time.
This commit enables the Butterfly server to send ping packets
periodically in order to keep the connection alive.

A new option `keepalive_interval` is also introduced for users to
specify the interval to send `ping` packets. By default it is 30
seconds.
This commit is contained in:
Peter Cai
2017-02-10 15:11:51 +08:00
parent fdeba5a5d4
commit a36579bb12
2 changed files with 22 additions and 1 deletions
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2
butterfly.server.py
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@@ -40,6 +40,8 @@ tornado.options.define("unminified", default=False,
tornado.options.define("host", default='localhost', help="Server host")
tornado.options.define("port", default=57575, type=int, help="Server port")
tornado.options.define("keepalive_interval", default=30, type=int,
help="Interval between ping packets sent from server to client (in seconds)")
tornado.options.define("one_shot", default=False,
help="Run a one-shot instance. Quit at term close")
tornado.options.define("shell", help="Shell to execute at login")