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https://issues.apache.org/jira/browse/TINKERPOP-1886?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16359909#comment-16359909
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Robert Dale commented on TINKERPOP-1886:
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Looks like some versions of tornado have keep-alive -
[http://www.tornadoweb.org/en/stable/_modules/tornado/websocket.html]
> Gremlin Python driver to periodically issue ping / heartbeat to gremlin server
> ------------------------------------------------------------------------------
>
> Key: TINKERPOP-1886
> URL: https://issues.apache.org/jira/browse/TINKERPOP-1886
> Project: TinkerPop
> Issue Type: Bug
> Components: python, server
> Affects Versions: 3.3.1
> Reporter: Harshvardhan
> Priority: Critical
>
> Gremlin Python driver currently does not send any ping request to the
> gremlin server. As a result, the websocket channel gets closed by the HAProxy
> load balancer after a period of inactivity.
>
> Workarounds have been suggested in the discussion listed below.
> Link to google groups discussion:
> https://groups.google.com/forum/?utm_medium=email&utm_source=footer#!msg/gremlin-users/bMs3OUPlBQI/q3fYU-9BBAAJ
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