gzip Handling Error

[jibasig]

I am using Retrofit 2.1.0 together with gson-Converter 2.1.0 and LoggingInterceptor 2.0.2.
If i call a service returning a response with "Content-Encoding: gzip" the following exception occurs.
java.io.IOException: ID1ID2: actual 0x00001fef != expected 0x00001f8b at okio.GzipSource.checkEqual(GzipSource.java:205) at okio.GzipSource.consumeHeader(GzipSource.java:120) at okio.GzipSource.read(GzipSource.java:73) at okio.RealBufferedSource.read(RealBufferedSource.java:45) at okio.ForwardingSource.read(ForwardingSource.java:35) at retrofit2.OkHttpCall$ExceptionCatchingRequestBody$1.read(OkHttpCall.java:279) at okio.RealBufferedSource.request(RealBufferedSource.java:66) at okio.RealBufferedSource.rangeEquals(RealBufferedSource.java:387) at okio.RealBufferedSource.rangeEquals(RealBufferedSource.java:371) at okhttp3.internal.Util.bomAwareCharset(Util.java:412) at okhttp3.ResponseBody$BomAwareReader.read(ResponseBody.java:248) at com.google.gson.stream.JsonReader.fillBuffer(JsonReader.java:1287) at com.google.gson.stream.JsonReader.nextNonWhitespace(JsonReader.java:1325) at com.google.gson.stream.JsonReader.doPeek(JsonReader.java:549) at com.google.gson.stream.JsonReader.peek(JsonReader.java:425) at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:205) at retrofit2.converter.gson.GsonResponseBodyConverter.convert(GsonResponseBodyConverter.java:37) at retrofit2.converter.gson.GsonResponseBodyConverter.convert(GsonResponseBodyConverter.java:25) at retrofit2.ServiceMethod.toResponse(ServiceMethod.java:117) at retrofit2.OkHttpCall.parseResponse(OkHttpCall.java:211) at retrofit2.OkHttpCall.execute(OkHttpCall.java:174) at retrofit2.ExecutorCallAdapterFactory$ExecutorCallbackCall.execute(ExecutorCallAdapterFactory.java:89)

First step could be just ignoring responses with content-Encoding=gzip and just returning the raw response from the interceptor. (this would disable logging for gzip responses). Another option could maybe be direct usage of GzipResource to decompress the response body. But I think, then you would have to remove the Content-Encoding:gzip header for further response handling by okHttp.

[jibasig]

To see how the response is further handled, you can have a look at the okHttp BridgeInterceptor(line 100)
if (transparentGzip && "gzip".equalsIgnoreCase(networkResponse.header("Content-Encoding")) && HttpHeaders.hasBody(networkResponse)) { GzipSource responseBody = new GzipSource(networkResponse.body().source()); Headers strippedHeaders = networkResponse.headers().newBuilder() .removeAll("Content-Encoding") .removeAll("Content-Length") .build(); responseBuilder.headers(strippedHeaders); responseBuilder.body(new RealResponseBody(strippedHeaders, Okio.buffer(responseBody))); }
The LoggingInterceptor could handle gzip in a similar way.

[chihung93]

Version 2.0.6
I have the same issue:

W/System.err: java.io.IOException: ID1ID2: actual 0x00001fef != expected 0x00001f8b
        at okio.GzipSource.checkEqual(GzipSource.java:205)
        at okio.GzipSource.consumeHeader(GzipSource.java:120)
        at okio.GzipSource.read(GzipSource.java:73)
        at okio.RealBufferedSource.read(RealBufferedSource.java:47)
        at okio.ForwardingSource.read(ForwardingSource.java:35)
        at retrofit2.OkHttpCall$ExceptionCatchingRequestBody$1.read(OkHttpCall.java:290)
        at okio.RealBufferedSource.request(RealBufferedSource.java:68)
        at okio.RealBufferedSource.rangeEquals(RealBufferedSource.java:418)
        at okio.RealBufferedSource.rangeEquals(RealBufferedSource.java:402)
        at okhttp3.internal.Util.bomAwareCharset(Util.java:432)
        at okhttp3.ResponseBody$BomAwareReader.read(ResponseBody.java:249)
        at com.google.gson.stream.JsonReader.fillBuffer(JsonReader.java:1287)
        at com.google.gson.stream.JsonReader.nextNonWhitespace(JsonReader.java:1325)
        at com.google.gson.stream.JsonReader.doPeek(JsonReader.java:549)
        at com.google.gson.stream.JsonReader.peek(JsonReader.java:425)
        at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:205)
        at retrofit2.converter.gson.GsonResponseBodyConverter.convert(GsonResponseBodyConverter.java:37)
        at retrofit2.converter.gson.GsonResponseBodyConverter.convert(GsonResponseBodyConverter.java:25)
        at retrofit2.ServiceMethod.toResponse(ServiceMethod.java:122)
        at retrofit2.OkHttpCall.parseResponse(OkHttpCall.java:217)
        at retrofit2.OkHttpCall.execute(OkHttpCall.java:180)
        at retrofit2.adapter.rxjava2.CallExecuteObservable.subscribeActual(CallExecuteObservable.java:42)
        at io.reactivex.Observable.subscribe(Observable.java:11194)
        at retrofit2.adapter.rxjava2.BodyObservable.subscribeActual(BodyObservable.java:34)
        at io.reactivex.Observable.subscribe(Observable.java:11194)
        at io.reactivex.internal.operators.flowable.FlowableFromObservable.subscribeActual(FlowableFromObservable.java:29)
        at io.reactivex.Flowable.subscribe(Flowable.java:13234)
        at io.reactivex.internal.operators.flowable.FlowableOnBackpressureLatest.subscribeActual(FlowableOnBackpressureLatest.java:32)
        at io.reactivex.Flowable.subscribe(Flowable.java:13234)
        at io.reactivex.Flowable.subscribe(Flowable.java:13180)
        at io.reactivex.internal.operators.flowable.FlowableSubscribeOn$SubscribeOnSubscriber.run(FlowableSubscribeOn.java:82)
        at io.reactivex.internal.schedulers.ScheduledRunnable.run(ScheduledRunnable.java:66)
        at io.reactivex.internal.schedulers.ScheduledRunnable.call(ScheduledRunnable.java:57)
        at java.util.concurrent.FutureTask.run(FutureTask.java:237)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:152)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:265)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
        at java.lang.Thread.run(Thread.java:818)