Fixed the metrics for the push type.

[RubenNL]

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Description

Fixes part of #1474.

Currently, the push metrics are only updated when they "expire". This is fixed with this small change.

Type of change

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• Bug fix (non-breaking change which fixes an issue)

Checklist

• [x] My code follows the style guidelines of this project
• [x] I ran ESLint and other linters for modified files
• [x] I have performed a self-review of my own code and tested it
• [ ] I have commented my code, particularly in hard-to-understand areas (including JSDoc for methods)
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[chakflying]

You can also fix the response time display by changing line 40:

        let ping = parseInt(request.query.ping) || null;

[RubenNL]

You can also fix the response time display by changing line 40:

        let ping = parseInt(request.query.ping) || null;

I'm trying to understand what this would do, because I don't have any errors now. The ping is reported as -1 in /metrics, which seems to be as expected?

[chakflying]

When I tried to send the ping with push parameters ?ping=100 it didn't update in the metrics. I guess if you don't use it you can ignore this.

[RubenNL]

Good catch, I will try that later this week and add it to the pull request.