HSP: 502 Proxy Error

Scott Jefferies

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Feb 21, 2017, 5:45:03 AM2/21/17

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Hi,

When making requests to the HSP API, I am receiving a 502 Proxy Error. Scripts were running fine previously.

The proxy server received an invalid response from an upstream server.

The proxy server could not handle the request.

Reason: Error reading from remote server.

Does anyone have any idea why I might be receiving this error?

Peter Hicks

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Feb 21, 2017, 5:46:12 AM2/21/17

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Hi Scott

Is this a one-off, or happening continually?

Peter

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Scott Jefferies

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Feb 21, 2017, 5:58:11 AM2/21/17

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Hi Peter,

I am only an adhoc user, but I have been experiencing the same issue since yesterday morning.

Scott

Peter Hicks (Poggs)

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Feb 21, 2017, 6:10:10 AM2/21/17

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Hi Scott

> On 21 Feb 2017, at 10:58, Scott Jefferies <scott.j...@ee.co.uk> wrote:
>
> I am only an adhoc user, but I have been experiencing the same issue since yesterday morning.

It may be an issue with the query you’re running - can you post the URL you’re calling? Also, can you try making another, simpler query? This will rule out whether it’s the specific query you’re running, or a separate issue.

Peter

Scott Jefferies

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Feb 21, 2017, 7:12:59 AM2/21/17

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Hi Peter,

A simpler query retrieving Service Metrics for only a few hours on a single day works! I was trying to retrieve a couple of days worth of data for Services between two stations. In your experience should this be possible? I have certainly extracted this amount of data in the past.

Many Thanks,

Scott

Peter Hicks

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Feb 21, 2017, 7:48:27 AM2/21/17

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Hi Scott

I don't see why you shouldn't be able to do that kind of longer query. If it's worked in the past...

It soundsime the query is taking too long to process on the server side and your HTTP connection is timing out.

I've mentioned it to the powers that be and I'll see if I can find out what's happening.

Peter

Matt Felstead

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Feb 26, 2017, 9:04:54 AM2/26/17

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Afternoon All

I too have been receiving the same error, again from scripts that previously worked fine. The error status is 502 - "The proxy server received an invalid response from an upstream server". I get this response from both the "service metrics" and "service details" API. I've been experiencing this problem since yesterday; I don't know if it'll be resolved by the planned maintenance taking place tomorrow?

Cheers

Matt

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Ian Mackay

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Aug 31, 2018, 9:36:42 AM8/31/18

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response is:

<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">

<title>502 Proxy Error</title>

</head><body>

<h1>Proxy Error</h1>

<p>The proxy server received an invalid

response from an upstream server.<br />

The proxy server could not handle the request <em><a href="/api/v1/serviceMetrics">POST /api/v1/serviceMetrics</a></em>.<p>

Reason: <strong>Error reading from remote server</strong></p></p>

<hr>

<address>Apache/2.2.15 (CentOS) Server at hsp-prod.rockshore.net Port 443</address>

</body></html>

Peter Hicks

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Aug 31, 2018, 9:38:20 AM8/31/18

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Hi Ian

It sounds like you're asking the server to make database queries for a much larger period of time than it's capable of doing prior to the front-end Apache server timing out.

Try reducing the date range a bit.

Peter

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Ian Mackay

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Aug 31, 2018, 11:36:15 AM8/31/18

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`Hi Peter, thanks for the response, but the same thing happens for a single day:

Body:

{ "from_loc":"HIT", "to_loc":"KGX", "from_time":"0400", "to_time":"2300", "from_date":"2018-04-01", "to_date":"2018-04-01", "days":"WEEKDAY" }

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