[discord module] DNS resolution failed

[Quinten0508]

Issue

On my server's console I randomly get this error (look at timestamps, this includes multiple (unrelated?) occurences)

This error happens with and w/o any players online, and when players are online it causes some events (deaths, achievements) not to be shown in the discord channels which I linked (the "console" chat is included here too).

I have also seen this, longer error message in console before, although it happens much less frequently

Config file (censored)

https://paste.bingner.com/paste/9kkok

System info

• Java 17 (AdoptOpenJDK)

openjdk 17.0.2 2022-01-18
OpenJDK Runtime Environment Temurin-17.0.2+8 (build 17.0.2+8)
OpenJDK 64-Bit Server VM Temurin-17.0.2+8 (build 17.0.2+8, mixed mode, sharing)

• MC ver 1.18.2 w/ PaperMC 1.18.2

This server is running Paper version git-Paper-277 (MC: 1.18.2) (Implementing API version 1.18.2-R0.1-SNAPSHOT) (Git: 87e11bf)

• OS: Fedora 35 (Linux)

Other plugins installed:

• Chunky
• CoreProtect
• EssentialsX 2.19.4
• EssentialsXDiscord 2.19.4
• EssentialsXGeoIP 2.19.4
• OIdCombatMechanics
• ProtocolLib
• Spark
• TCPShield

[Quinten0508]

By the way:
I put this in the Questions section instead of the Issues section as I wanted to confirm it actually is an issue on EssentialsX's side and not some configuration issue on my side. LMK if I should create an issue from this discussion :)

[Chew]

Some firewall is blocking your host from connecting to discord.com, so requests can't complete.

[Quinten0508]

I'm running the server on my desktop and can connect to discord.com just fine. Furthermore, 95% of requests go through and a firewall rule would either block or allow, not randomly pick out a few requests.

[Quinten0508]

Decided to turn on the whitelist for a bit to see if this still happens, here's an example where you can see the server start up as well, and the websocket seems to reconnect within 4(?) seconds from disconnect. Once again, I heavily doubt it's a firewall:

[18:30:34 INFO]: [Essentials] §6Fetching version information...
[18:30:34 INFO]: Done (5.105s)! For help, type "help"
[18:30:34 INFO]: Timings Reset
[20:10:08 WARN]: [net.essentialsx.dep.net.dv8tion.jda.internal.requests.WebSocketClient] Reconnect failed! Next attempt in 2s
[20:10:25 WARN]: [net.essentialsx.dep.net.dv8tion.jda.internal.requests.WebSocketClient] Got disconnected from WebSocket (Code 1000). Appending to reconnect queue
[20:10:29 INFO]: [net.essentialsx.dep.net.dv8tion.jda.internal.requests.WebSocketClient] Connected to WebSocket
[20:10:29 INFO]: [net.essentialsx.dep.net.dv8tion.jda.api.JDA] Finished (Re)Loading!

Console relay output in Discord:

[8:10:08 PM WARN] Reconnect failed! Next attempt in 2s
[8:10 PM]
[8:10:25 PM WARN] Got disconnected from WebSocket (Code 1000). Appending to reconnect queue
[8:10 PM]
[8:10:29 PM INFO] Connected to WebSocket
[8:10:29 PM INFO] Finished (Re)Loading!

[Chew]

Websocket would be discord.gg, not discord.com, and I've had it be janky due to bad internet as well. Either way, not much we can do, sadly

[Quinten0508]

Both domains are affected:

java.net.UnknownHostException: discord.com: Name or service not known
	at java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method) ~[?:?]
	at java.net.InetAddress$PlatformNameService.lookupAllHostAddr(InetAddress.java:933) ~[?:?]
	at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1519) ~[?:?]
	at java.net.InetAddress$NameServiceAddresses.get(InetAddress.java:852) ~[?:?]
	at java.net.InetAddress.getAllByName0(InetAddress.java:1509) ~[?:?]
	at java.net.InetAddress.getAllByName(InetAddress.java:1367) ~[?:?]
	at java.net.InetAddress.getAllByName(InetAddress.java:1301) ~[?:?]
	at net.essentialsx.dep.okhttp3.Dns.lambda$static$0(Dns.java:39) ~[EssentialsXDiscord-2.19.4.jar:?]
	at net.essentialsx.dep.okhttp3.internal.connection.RouteSelector.resetNextInetSocketAddress(RouteSelector.java:171) ~[EssentialsXDiscord-2.19.4.jar:?]
	at net.essentialsx.dep.okhttp3.internal.connection.RouteSelector.nextProxy(RouteSelector.java:135) ~[EssentialsXDiscord-2.19.4.jar:?]
	at net.essentialsx.dep.okhttp3.internal.connection.RouteSelector.next(RouteSelector.java:84) ~[EssentialsXDiscord-2.19.4.jar:?]
	at net.essentialsx.dep.okhttp3.internal.connection.ExchangeFinder.findConnection(ExchangeFinder.java:187) ~[EssentialsXDiscord-2.19.4.jar:?]
	at net.essentialsx.dep.okhttp3.internal.connection.ExchangeFinder.findHealthyConnection(ExchangeFinder.java:108) ~[EssentialsXDiscord-2.19.4.jar:?]
	at net.essentialsx.dep.okhttp3.internal.connection.ExchangeFinder.find(ExchangeFinder.java:88) ~[EssentialsXDiscord-2.19.4.jar:?]
	at net.essentialsx.dep.okhttp3.internal.connection.Transmitter.newExchange(Transmitter.java:169) ~[EssentialsXDiscord-2.19.4.jar:?]
	at net.essentialsx.dep.okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:41) ~[EssentialsXDiscord-2.19.4.jar:?]
	at net.essentialsx.dep.okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142) ~[EssentialsXDiscord-2.19.4.jar:?]
	at net.essentialsx.dep.okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:117) ~[EssentialsXDiscord-2.19.4.jar:?]
	at net.essentialsx.dep.okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:94) ~[EssentialsXDiscord-2.19.4.jar:?]
	at net.essentialsx.dep.okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142) ~[EssentialsXDiscord-2.19.4.jar:?]
	at net.essentialsx.dep.okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:117) ~[EssentialsXDiscord-2.19.4.jar:?]
	at net.essentialsx.dep.okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93) ~[EssentialsXDiscord-2.19.4.jar:?]
	at net.essentialsx.dep.okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142) ~[EssentialsXDiscord-2.19.4.jar:?]
	at net.essentialsx.dep.okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:88) ~[EssentialsXDiscord-2.19.4.jar:?]
	at net.essentialsx.dep.okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142) ~[EssentialsXDiscord-2.19.4.jar:?]
	at net.essentialsx.dep.okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:117) ~[EssentialsXDiscord-2.19.4.jar:?]
	at net.essentialsx.dep.okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:229) ~[EssentialsXDiscord-2.19.4.jar:?]
	at net.essentialsx.dep.okhttp3.RealCall.execute(RealCall.java:81) ~[EssentialsXDiscord-2.19.4.jar:?]
	at net.essentialsx.dep.club.minnced.discord.webhook.WebhookClient.executePair(WebhookClient.java:793) ~[EssentialsXDiscord-2.19.4.jar:?]
	at net.essentialsx.dep.club.minnced.discord.webhook.WebhookClient.drainQueue(WebhookClient.java:769) ~[EssentialsXDiscord-2.19.4.jar:?]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539) ~[?:?]
	at java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[?:?]
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304) ~[?:?]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136) ~[?:?]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) ~[?:?]
	at java.lang.Thread.run(Thread.java:833) ~[?:?]

I'm positive it's not my internet. I understand you guys can't do much about it though.
Thanks for the help!