[GH-ISSUE #2335] Monitor fails if query.port is different from server-port #1755

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opened 2026-02-27 02:58:52 +03:00 by kerem · 3 comments

kerem commented

2026-02-27 02:58:52 +03:00

Owner

Originally created by @kyleedwardsny on GitHub (May 6, 2019).
Original GitHub issue: https://github.com/GameServerManagers/LinuxGSM/issues/2335

User Story

In Minecraft, monitor command fails when query.port is different from server-port in server.properties, because monitor connects to server-port on UDP, while the monitor socket is listening on query.port.

Basic info

Distro: [Ubuntu 16.04]
Game: [Minecraft]
Command: [Monitor]

Further Information

This can be fixed by changing query_gsquery.py to connect to query.port instead of server-port.

To Reproduce

Steps to reproduce the behaviour:

Set up a server
Set query.port different from server-port
Run mcserver monitor

Expected behaviour

Monitor succeeds

Actual behavior

Monitor thinks Minecraft has crashed and restarts it

Originally created by @kyleedwardsny on GitHub (May 6, 2019). Original GitHub issue: https://github.com/GameServerManagers/LinuxGSM/issues/2335 ## User Story In Minecraft, `monitor` command fails when `query.port` is different from `server-port` in `server.properties`, because `monitor` connects to `server-port` on UDP, while the monitor socket is listening on `query.port`. ## Basic info * Distro: [Ubuntu 16.04] * Game: [Minecraft] * Command: [Monitor] ## Further Information This can be fixed by changing `query_gsquery.py` to connect to `query.port` instead of `server-port`. ## To Reproduce Steps to reproduce the behaviour: 1. Set up a server 2. Set `query.port` different from `server-port` 3. Run `mcserver monitor` ## Expected behaviour Monitor succeeds ## Actual behavior Monitor thinks Minecraft has crashed and restarts it

kerem

2026-02-27 02:58:52 +03:00

closed this issue
added the
type: bug

command: monitor

game: Minecraft
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kerem commented

2026-02-27 02:58:53 +03:00

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@freaky-m0 commented on GitHub (May 22, 2019):

"command fails when query.port is different from server-port in server.properties"

It's the same problem when the ports are the same. Because there is no open UDP Port but the monitor query wants to check UDP as you mentioned. I have only an open TCP port on my installation.

@freaky-m0 commented on GitHub (May 22, 2019): "command fails when query.port is different from server-port in server.properties" It's the same problem when the ports are the same. Because there is no open UDP Port but the monitor query wants to check UDP as you mentioned. I have only an open TCP port on my installation.

kerem commented

2026-02-27 02:58:53 +03:00

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@freaky-m0 commented on GitHub (Sep 20, 2019):

It's still the same problem. The script still fails because it looks for a UDP port which isn't there.

./mcserver d gives:

Ports
=====================================================================================
Change ports by editing the parameters in:
/home/mcserver/serverfiles/server.properties

Useful port diagnostic command:
netstat -atunp | grep java

DESCRIPTION  DIRECTION  PORT   PROTOCOL
Game       INBOUND    25565  tcp
Query      INBOUND    25565  udp
Rcon       INBOUND    25575  tcp

But if I look with netstat it's just TCP:


root@gameserver:/home/user# sudo netstat -atunp | grep 25565
tcp6       0      0 11.22.33.44:25565       :::*                    LISTEN      16570/java

@freaky-m0 commented on GitHub (Sep 20, 2019): It's still the same problem. The script still fails because it looks for a UDP port which isn't there. ./mcserver d gives: ``` Ports ===================================================================================== Change ports by editing the parameters in: /home/mcserver/serverfiles/server.properties Useful port diagnostic command: netstat -atunp | grep java DESCRIPTION DIRECTION PORT PROTOCOL Game INBOUND 25565 tcp Query INBOUND 25565 udp Rcon INBOUND 25575 tcp ``` But if I look with netstat it's just TCP: ``` root@gameserver:/home/user# sudo netstat -atunp | grep 25565 tcp6 0 0 11.22.33.44:25565 :::* LISTEN 16570/java ```

kerem commented

2026-02-27 02:58:53 +03:00

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Owner

@freaky-m0 commented on GitHub (Oct 17, 2019):

Is it fixed?

@freaky-m0 commented on GitHub (Oct 17, 2019): Is it fixed?