DNS issues (Couldn't resolve host name) for multiplayer server running in Windows docker container

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ssuder asked Sep 22, '22

DNS issues (Couldn't resolve host name) for multiplayer server running in Windows docker container

Hello,

I'm experiencing DNS issues (at least this is what I assume) with my Unreal Engine dedicated server when running in a Windows docker container (using the LocalMultiplayerAgent with containerization or running in a PlayFab Multiplayer VM).

The server is working fine locally using the LocalMultiplayerAgent without containerization, but in the Docker container I always get the following error:

[2022.09.21-04.54.10:524][326]LogHttp: Warning: 000002126D6A9710: invalid HTTP response code received. URL: https://XXXXX.playfabapi.com/Authentication/GetEntityToken?sdk=UE4MKPL-1.90.220720, HTTP code: 0, content length: 0, actual payload size: 0
[2022.09.21-04.54.10:524][326]LogHttp: Warning: 000002126D6A9710: request failed, libcurl error: 6 (Couldn't resolve host name)
[2022.09.21-04.54.10:524][326]LogHttp: Warning: 000002126D6A9710: libcurl info message cache 0 (Could not resolve host: XXXXX.playfabapi.com)
[2022.09.21-04.54.10:525][326]LogHttp: Warning: 000002126D6A9710: libcurl info message cache 1 (Closing connection 0)

Someone experienced the same issue here, but no solution was provided.

Thanks in advance for any help.

multiplayer

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Answer 1 · 2022-09-23T05:14:59Z

Gosen Gao answered Sep 23, '22

Could you please try to Uncheck "Verify Peer" in the UE4 project settings to see if this issue can be fixed?

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ssuder commented · Sep 30, 2022 at 06:46 AM

Thanks, this fixed the issue!

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JayZuo ♦ commented · Oct 20, 2022 at 07:09 AM

We do not recommend unchecking "Verify Peer" in the UE4 project settings for production as this will bring security risk. As this is a certificate issue, we'd suggest referring to https://github.com/PlayFab/MpsSamples/blob/main/UnrealThirdPersonMP/amazon_root_ca.md to fix the certificate issue.

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