Proxy error: Errno::EPROTO 504 in our ZAF app | Community
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Proxy error: Errno::EPROTO 504 in our ZAF app

  • November 18, 2021
  • 2 replies
  • 0 views
M

Hi

Within our app we are doing a ZAFClient request to our server to retrieve some data. This has been worked for a couple of years but a few days ago it stopped working.

We have tested the same request with PostMan and works without any issues

In the devtools our request response looks like:

Req: https://[instance].zendesk.com/proxy/v2/apps/secure/https%3A%2F%2F...
Resp: HTTP 504, Proxy error: Errno::EPROTO

We have recently changed our SSL certs provider from TrustWave to Comodo.

And we have switched domain from .me to .com, but it was a week earlier and after changing URLs in the app everything were working properly.

Any hints how to debug this issue are really appreciated, thanks in advance. 

 

    2 replies

    Chris124
    • Chris124
    • November 18, 2021

    Hi Michael,

    This error is usually caused by the proxy not being able to validate the certificate on the remote server and failing the request to ensure no credentials are leaked.

    I'll open a ticket on your behalf over this so we can look into it in detail.

    Chris

    James148
    • James148
    • September 8, 2022

    For anyone else that finds this post, you can get more information about SSL requirements for secure settings in our developer documentation:

    https://developer.zendesk.com/documentation/apps/getting-started/making-api-requests-from-a-zendesk-app/#secure-setting-requirements

    James

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