DarkAtra
DarkAtra
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KKord
Created by DarkAtra on 3/19/2025 in #help
Kord does not recover from UnknownHostException
ok, i'll set it to trace for kord and report back when it happens again
24 replies
KKord
Created by DarkAtra on 3/19/2025 in #help
Kord does not recover from UnknownHostException
nope, nothing else besides the two errors i just sent you. The UnknownHostException reoccurs like 20 times or so tho
24 replies
KKord
Created by DarkAtra on 3/19/2025 in #help
Kord does not recover from UnknownHostException
the errors are 8 minutes apart tho.. so yeah not sure if they are related
24 replies
KKord
Created by DarkAtra on 3/19/2025 in #help
Kord does not recover from UnknownHostException
24 replies
KKord
Created by DarkAtra on 3/19/2025 in #help
Kord does not recover from UnknownHostException
i cant post the full stack trace as i dont have nitro. the logs reads: 
2025-04-09T01:13:50.030Z ERROR 1 --- [atcher-worker-3] dev.kord.gateway.DefaultGateway          : 
java.net.SocketException: Socket closed
...
...
2025-04-09T01:13:58.060Z ERROR 1 --- [atcher-worker-3] dev.kord.gateway.DefaultGateway          :  
java.net.UnknownHostException: gateway-us-east1-b.discord.gg: Temporary failure in name resolution
...
...
2025-04-09T01:13:50.030Z ERROR 1 --- [atcher-worker-3] dev.kord.gateway.DefaultGateway          : 
java.net.SocketException: Socket closed
...
...
2025-04-09T01:13:58.060Z ERROR 1 --- [atcher-worker-3] dev.kord.gateway.DefaultGateway          :  
java.net.UnknownHostException: gateway-us-east1-b.discord.gg: Temporary failure in name resolution
...
...
24 replies
KKord
Created by DarkAtra on 3/19/2025 in #help
Kord does not recover from UnknownHostException
correct me if i'm wrong but this is how i understand the gateway connection: There is a websocket connection that kord uses to receive events from discord - for example for command issued by users on a server. When this websocket connection is closed by the peer for whatever reason, kord attempts to reconnect to the gateway. Now if the hostname of the gateway could not be resolved - the attempt is aborted and kord never reconnects.
24 replies
KKord
Created by DarkAtra on 3/19/2025 in #help
Kord does not recover from UnknownHostException
this is the disconnect from the gateway and then kord attempts to reconnect right after - this is where the hostname exception occurs
24 replies
KKord
Created by DarkAtra on 3/19/2025 in #help
Kord does not recover from UnknownHostException
discord message length fucked up the stack trace - i've updated it.
24 replies
KKord
Created by DarkAtra on 3/19/2025 in #help
Kord does not recover from UnknownHostException
The cause likely is: 
2025-04-09T01:13:50.030Z ERROR 1 --- [atcher-worker-3] dev.kord.gateway.DefaultGateway          : 
java.net.SocketException: Socket closed
    at [email protected]/sun.nio.ch.NioSocketImpl.endRead(NioSocketImpl.java:243) ~[na:na]
    at [email protected]/sun.nio.ch.NioSocketImpl.implRead(NioSocketImpl.java:323) ~[na:na]
    at [email protected]/sun.nio.ch.NioSocketImpl.read(NioSocketImpl.java:346) ~[na:na]
    at [email protected]/sun.nio.ch.NioSocketImpl$1.read(NioSocketImpl.java:796) ~[na:na]
    at [email protected]/java.net.Socket$SocketInputStream.read(Socket.java:1099) ~[na:na]
    at [email protected]/sun.security.ssl.SSLSocketInputRecord.read(SSLSocketInputRecord.java:489) ~[na:na]
    at [email protected]/sun.security.ssl.SSLSocketInputRecord.readHeader(SSLSocketInputRecord.java:483) ~[na:na]
    at [email protected]/sun.security.ssl.SSLSocketInputRecord.bytesInCompletePacket(SSLSocketInputRecord.java:70) ~[na:na]
    at [email protected]/sun.security.ssl.SSLSocketImpl.readApplicationRecord(SSLSocketImpl.java:1461) ~[na:na]
    at [email protected]/sun.security.ssl.SSLSocketImpl$AppInputStream.read(SSLSocketImpl.java:1066) ~[na:na]
    at okio.InputStreamSource.read(JvmOkio.kt:93) ~[na:na]
    at okio.AsyncTimeout$source$1.read(AsyncTimeout.kt:153) ~[na:na]
2025-04-09T01:13:50.030Z ERROR 1 --- [atcher-worker-3] dev.kord.gateway.DefaultGateway          : 
java.net.SocketException: Socket closed
    at [email protected]/sun.nio.ch.NioSocketImpl.endRead(NioSocketImpl.java:243) ~[na:na]
    at [email protected]/sun.nio.ch.NioSocketImpl.implRead(NioSocketImpl.java:323) ~[na:na]
    at [email protected]/sun.nio.ch.NioSocketImpl.read(NioSocketImpl.java:346) ~[na:na]
    at [email protected]/sun.nio.ch.NioSocketImpl$1.read(NioSocketImpl.java:796) ~[na:na]
    at [email protected]/java.net.Socket$SocketInputStream.read(Socket.java:1099) ~[na:na]
    at [email protected]/sun.security.ssl.SSLSocketInputRecord.read(SSLSocketInputRecord.java:489) ~[na:na]
    at [email protected]/sun.security.ssl.SSLSocketInputRecord.readHeader(SSLSocketInputRecord.java:483) ~[na:na]
    at [email protected]/sun.security.ssl.SSLSocketInputRecord.bytesInCompletePacket(SSLSocketInputRecord.java:70) ~[na:na]
    at [email protected]/sun.security.ssl.SSLSocketImpl.readApplicationRecord(SSLSocketImpl.java:1461) ~[na:na]
    at [email protected]/sun.security.ssl.SSLSocketImpl$AppInputStream.read(SSLSocketImpl.java:1066) ~[na:na]
    at okio.InputStreamSource.read(JvmOkio.kt:93) ~[na:na]
    at okio.AsyncTimeout$source$1.read(AsyncTimeout.kt:153) ~[na:na]
24 replies
KKord
Created by DarkAtra on 3/19/2025 in #help
Kord does not recover from UnknownHostException
The same issue just happened again today at around 1am. My bot was unable to resolve the hostname gateway-us-east1-b.discord.gg for about 2 minutes (using google DNS). I thought about switching the dns provider that ok-http uses from system (google dns) to something else. However, this could still fail since there is no guarantee that DNS lookups always succeed. I think the only way of dealing with this issue permantently is to make kord more resilient and attempt reconnects with backoff. Right now it's getting stuck in a weird state where it can query and update messages in a discord server but doesn't react to application commands anymore.
24 replies
KKord
Created by DarkAtra on 3/19/2025 in #help
Kord does not recover from UnknownHostException
@SchlaubiBus any idea?
24 replies
KKord
Created by DarkAtra on 3/19/2025 in #help
Kord does not recover from UnknownHostException
is there any way for me to force gateway reconnects when an UnknownHostException occurs for the time being?
24 replies
KKord
Created by DarkAtra on 3/19/2025 in #help
Kord does not recover from UnknownHostException
Yes, I would expect Kord to attempt to recover in such a case. In my experience, most UnknownHostException are temporary and usually recoverable by retrying with backoff.
24 replies