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Hi! I’m looking into using compression for the response and I can’t get it to work. I’ve tried setting the `Accept-Encoding: gzip` header, first on the `OkHttpClient` , then on the `ApolloClient` , but neither solution worked, as requests fail with `JsonEncodingException` because of “malformed JSON”. Tried the same with the 2 sample apps mentioned in the docs. MortyComposeKMM has the same issue, while the apollo-kotlin-tutorial app works no matter if I set the header on the Http client or the Apollo client.

My setup is a bit weird, in that I have the Apollo client in a multiplatform module, but it shares the `OkHttpClient` configured in the `app` module (because of a migration in progress and a mix of REST and graphQL backends). I should mention that our iOS app (which at the moment is completely separate) works with `gzip` without issues.

And as an example, this is what I changed in the MortyKMM app:
<https://github.com/joreilly/MortyComposeKMM/blob/4b6cccbf901c5ddf3683995b8a9abcae2e76c156/shared/src/commonMain/kotlin/dev/johnoreilly/mortycomposekmm/shared/MortyRepository.kt#L26|https://github.com/joreilly/MortyComposeKMM/blob/4b6cccbf901c5ddf3683995b8a9abcae2[…]otlin/dev/johnoreilly/mortycomposekmm/shared/MortyRepository.kt>
```private val apolloClient = ApolloClient.Builder()
        .serverUrl("<https://rickandmortyapi.com/graphql>")
        .addHttpInterceptor(
            HeadersInterceptor(listOf(HttpHeader("Accept-Encoding", "gzip")))
        )
        .addHttpInterceptor(LoggingInterceptor())
        .build()```

What does the LogginInterceptor say? Can you dump the HTTP request/response?

Tried both there as well, the one on the OkHttpClient (`HttpLoggingInterceptor` ) will print the unzipped JSON, while the Apollo `LoggingInterceptor` will print the binary content

```Request headers:

Content-Type: application/json
Content-Length: 164
X-APOLLO-OPERATION-ID: ...
X-APOLLO-OPERATION-NAME: PublishedProductCollections
Accept: multipart/mixed; deferSpec=20220824, application/json
Accept-Encoding: gzip
User-Agent: ...
Market: se
Authorization: Bearer ...

Request body: 
{"operationName":"PublishedProductCollections","variables":{},"query":"query PublishedProductCollections { ... }"}

Response headers:

content-type: application/json; charset=utf-8
cf-ray: ...
cf-cache-status: HIT
age: 291
cache-control: public, max-age=180, s-maxage=180
content-encoding: gzip
vary: Origin, Accept-Encoding
x-envoy-upstream-service-time: 75
x-graphql-cache: hit
set-cookie: ...
server: cloudflare

Response body:

(OkHttp) HttpLoggingInterceptor: 
{"data":{"publishedProductCollections":[...]}}

(Apollo) LoggingInterceptor:
�????????????|WKn��...```

See <https://github.com/square/okhttp/issues/2132|https://github.com/square/okhttp/issues/2132>

If you set it yourself then you become responsible for decompressing also

How certain are you that it wasn't already working transparently before you changed anything?

Oh, I didn’t know that, thank you! I guess then I don’t need to do anything at all.

I think you'll see differences in encoding between a application and network interceptor if you want to confirm

I will do that, and also double-check with my colleague who handles the backend. Thank you both for your prompt help!