Duplicate proxy-port prevents creating TCP + UDP resources on same port #720

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MrUnknownDE · 2026-04-05T17:37:02+02:00

MrUnknownDE commented

2026-04-05 17:37:02 +02:00

Originally created by @AndrewPaglusch on 10/26/2025

Describe the Bug

I'm not sure if this bug report belongs in the Pangolin repo, or the Newt one. I'm adding it here, but I can re-submit under Newt if that'd be better.

Adding the following TCP proxy-resource to a container works correctly.

- pangolin.proxy-resources.traccar-freematics-tcp.name=Traccar Freematcis (TCP)
- pangolin.proxy-resources.traccar-freematics-tcp.protocol=tcp
- pangolin.proxy-resources.traccar-freematics-tcp.proxy-port=5170
- pangolin.proxy-resources.traccar-freematics-tcp.targets[0].hostname=traccar
- pangolin.proxy-resources.traccar-freematics-tcp.targets[0].port=5170

But when I try to add a UDP proxy-resource with the same port-number:

- pangolin.proxy-resources.traccar-freematics-tcp.name=Traccar Freematcis (TCP)
- pangolin.proxy-resources.traccar-freematics-tcp.protocol=tcp
- pangolin.proxy-resources.traccar-freematics-tcp.proxy-port=5170
- pangolin.proxy-resources.traccar-freematics-tcp.targets[0].hostname=traccar
- pangolin.proxy-resources.traccar-freematics-tcp.targets[0].port=5170

- pangolin.proxy-resources.traccar-freematics-udp.name=Traccar Freematcis (UDP)
- pangolin.proxy-resources.traccar-freematics-udp.protocol=udp
- pangolin.proxy-resources.traccar-freematics-udp.proxy-port=5170
- pangolin.proxy-resources.traccar-freematics-udp.targets[0].hostname=traccar
- pangolin.proxy-resources.traccar-freematics-udp.targets[0].port=5170

I get the following error in the Newt logs:

WARN: 2025/10/26 07:36:05 Blueprint application failed: Failed to update database from config: Error: Validation error: Duplicate 'proxy-port' values found in proxy-resources: port 5170 used by proxy-resources: traccar-freematics-tcp, traccar-freematics-udp at "proxy-resources"

In the Pangolin UI, I can make a UDP and TCP resource with the same port, so making this via a Blueprint seems to use improper validation.

Environment

OS Type & Version: AlmaLinux 9.6
Pangolin Version: 1.11.1 (Community)
Gerbil Version: 1.2.2
Traefik Version: 3.4.0
Newt Version: 1.5.2
Olm Version: N/A

To Reproduce

Try to add the following Blueprints to a container. A TCP port and UDP port that are the same port number

- pangolin.proxy-resources.traccar-freematics-tcp.name=Traccar Freematcis (TCP)
- pangolin.proxy-resources.traccar-freematics-tcp.protocol=tcp
- pangolin.proxy-resources.traccar-freematics-tcp.proxy-port=5170
- pangolin.proxy-resources.traccar-freematics-tcp.targets[0].hostname=traccar
- pangolin.proxy-resources.traccar-freematics-tcp.targets[0].port=5170

- pangolin.proxy-resources.traccar-freematics-udp.name=Traccar Freematcis (UDP)
- pangolin.proxy-resources.traccar-freematics-udp.protocol=udp
- pangolin.proxy-resources.traccar-freematics-udp.proxy-port=5170
- pangolin.proxy-resources.traccar-freematics-udp.targets[0].hostname=traccar
- pangolin.proxy-resources.traccar-freematics-udp.targets[0].port=5170

Expected Behavior

A TCP resource and UDP resource should be created, each with the same port number

*Originally created by @AndrewPaglusch on 10/26/2025* ### Describe the Bug I'm not sure if this bug report belongs in the Pangolin repo, or the Newt one. I'm adding it here, but I can re-submit under Newt if that'd be better. Adding the following TCP `proxy-resource` to a container works correctly. ``` - pangolin.proxy-resources.traccar-freematics-tcp.name=Traccar Freematcis (TCP) - pangolin.proxy-resources.traccar-freematics-tcp.protocol=tcp - pangolin.proxy-resources.traccar-freematics-tcp.proxy-port=5170 - pangolin.proxy-resources.traccar-freematics-tcp.targets[0].hostname=traccar - pangolin.proxy-resources.traccar-freematics-tcp.targets[0].port=5170 ``` But when I try to add a UDP `proxy-resource` with the same `port-number`: ``` - pangolin.proxy-resources.traccar-freematics-tcp.name=Traccar Freematcis (TCP) - pangolin.proxy-resources.traccar-freematics-tcp.protocol=tcp - pangolin.proxy-resources.traccar-freematics-tcp.proxy-port=5170 - pangolin.proxy-resources.traccar-freematics-tcp.targets[0].hostname=traccar - pangolin.proxy-resources.traccar-freematics-tcp.targets[0].port=5170 - pangolin.proxy-resources.traccar-freematics-udp.name=Traccar Freematcis (UDP) - pangolin.proxy-resources.traccar-freematics-udp.protocol=udp - pangolin.proxy-resources.traccar-freematics-udp.proxy-port=5170 - pangolin.proxy-resources.traccar-freematics-udp.targets[0].hostname=traccar - pangolin.proxy-resources.traccar-freematics-udp.targets[0].port=5170 ``` I get the following error in the Newt logs: ``` WARN: 2025/10/26 07:36:05 Blueprint application failed: Failed to update database from config: Error: Validation error: Duplicate 'proxy-port' values found in proxy-resources: port 5170 used by proxy-resources: traccar-freematics-tcp, traccar-freematics-udp at "proxy-resources" ``` In the Pangolin UI, I can make a UDP and TCP resource with the same port, so making this via a Blueprint seems to use improper validation. ### Environment - OS Type & Version: AlmaLinux 9.6 - Pangolin Version: 1.11.1 (Community) - Gerbil Version: 1.2.2 - Traefik Version: 3.4.0 - Newt Version: 1.5.2 - Olm Version: N/A ### To Reproduce Try to add the following Blueprints to a container. A TCP port and UDP port that are the same port number ``` - pangolin.proxy-resources.traccar-freematics-tcp.name=Traccar Freematcis (TCP) - pangolin.proxy-resources.traccar-freematics-tcp.protocol=tcp - pangolin.proxy-resources.traccar-freematics-tcp.proxy-port=5170 - pangolin.proxy-resources.traccar-freematics-tcp.targets[0].hostname=traccar - pangolin.proxy-resources.traccar-freematics-tcp.targets[0].port=5170 - pangolin.proxy-resources.traccar-freematics-udp.name=Traccar Freematcis (UDP) - pangolin.proxy-resources.traccar-freematics-udp.protocol=udp - pangolin.proxy-resources.traccar-freematics-udp.proxy-port=5170 - pangolin.proxy-resources.traccar-freematics-udp.targets[0].hostname=traccar - pangolin.proxy-resources.traccar-freematics-udp.targets[0].port=5170 ``` ### Expected Behavior A TCP resource and UDP resource should be created, each with the same port number

MrUnknownDE closed this issue

2026-04-05 17:37:02 +02:00

MrUnknownDE added the bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug bug labels 2026-04-05 17:37:04 +02:00

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Reference: github/pangolin#720