Error while Intercepting failed requests

[Bingonymous]

General Troubleshooting

• I have checked for similar issues on the Issue-tracker.
• I have checked for PRs that might already address this issue.

Version of JDA

v5.1.0

Expected Behaviour

I try to log all requests from JDA to discord because I get sometimes a globalban (from cloudflare).
They say that they count "401", "403" and "429" errors against me, so I wrote the following code... (see code example)

Code Example for Reproduction Steps

Interceptor interceptor = new Interceptor() {
    @NotNull
    @Override
    public Response intercept(@NotNull Chain chain) throws IOException {
	Response response = chain.proceed(chain.request());

	int statusCode = response.code();
	if (statusCode == 401 || statusCode == 403 || statusCode == 429) {
            System.out.println("HTTP Status Code: " + statusCode);
            System.out.println("URL: " + response.request().url());
        }

        return response;
    }
};


final JDA core = core = JDABuilder
    .create(getToken(), getEnableIntents())
    .setHttpClientBuilder(IOUtil.newHttpClientBuilder().addInterceptor(interceptor))
    .build();

Code for JDABuilder or DefaultShardManagerBuilder used

final JDA core = core = JDABuilder
    .create(getToken(), getEnableIntents())
    .setHttpClientBuilder(IOUtil.newHttpClientBuilder().addInterceptor(interceptor))
    .build();

Exception or Error

java.lang.IllegalStateException: An error occurred while parsing the response for a RestAction
        at net.dv8tion.jda.api.requests.Response.<init>(Response.java:81)
        at net.dv8tion.jda.api.requests.Response.<init>(Response.java:92)
        at net.dv8tion.jda.internal.requests.Requester$WorkTask.handleResponse(Requester.java:442)
        at net.dv8tion.jda.internal.requests.Requester$WorkTask.access$300(Requester.java:378)
        at net.dv8tion.jda.internal.requests.Requester.execute(Requester.java:245)
        at net.dv8tion.jda.internal.requests.Requester.execute(Requester.java:157)
        at net.dv8tion.jda.internal.requests.Requester.execute(Requester.java:140)
        at net.dv8tion.jda.internal.requests.Requester$WorkTask.execute(Requester.java:406)
        at net.dv8tion.jda.api.requests.SequentialRestRateLimiter$Bucket.execute(SequentialRestRateLimiter.java:477)
        at net.dv8tion.jda.api.requests.SequentialRestRateLimiter$Bucket.run(SequentialRestRateLimiter.java:517)
        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
        at java.base/java.lang.Thread.run(Thread.java:1570)
Caused by: java.io.IOException: closed
        at okio.RealBufferedSource$inputStream$1.read(RealBufferedSource.kt:157)
        at java.base/java.io.BufferedInputStream.fill(BufferedInputStream.java:291)
        at java.base/java.io.BufferedInputStream.implRead(BufferedInputStream.java:325)
        at java.base/java.io.BufferedInputStream.read(BufferedInputStream.java:312)
        at java.base/java.util.zip.CheckedInputStream.read(CheckedInputStream.java:59)
        at java.base/java.util.zip.GZIPInputStream.readUByte(GZIPInputStream.java:277)
        at java.base/java.util.zip.GZIPInputStream.readUShort(GZIPInputStream.java:269)
        at java.base/java.util.zip.GZIPInputStream.readHeader(GZIPInputStream.java:175)
        at java.base/java.util.zip.GZIPInputStream.<init>(GZIPInputStream.java:79)
        at java.base/java.util.zip.GZIPInputStream.<init>(GZIPInputStream.java:91)
        at net.dv8tion.jda.internal.utils.IOUtil.getBody(IOUtil.java:279)
        at net.dv8tion.jda.api.requests.Response.<init>(Response.java:77)
        ... 12 common frames omitted

[freya022]

Can't repro, what request causes that? what does IOUtil.newHttpClientBuilder() do?

[Bingonymous]

IOUtil is from JDA - the error seems to occur only sometimes for some reason

[Bingonymous]

net.dv8tion.jda.internal.utils.IOUtil

[freya022]

You can also listen for HttpRequestEvent

[Andre601]

This is a guess on my end, but given it has "closed" as the IOException reason and that it mentions InputStreams, maybe it's your call of chain.proceed(...) to cause the InputStream to be closed prematurely?
Whatever it is, something closes the connection/InputStream before JDA is done. At least that's what I understand from the exception given.

On another note, you receiving errors from Cloudflare, with one of them being 429 (Rate limited), is a rather odd issue you seem to have.
Do you by any chance have other bots/services contact the Discord API? Or do you use the bot on a shared host or similar? Because I doubt CF has such strict rate limits in place here and such errors could usually only mean that the same IP creates a ton of requests here.
(Again, guessing here on my end)