Retrofit: how to parse GZIP'd response without Content-Encoding: gzip header

Question

I\'m trying to process a server response which is GZIP\'d. The response comes with a header

Content-Type: application/x-gzip

but does not

Answer 1

There is a better way than reinventing the wheel. Just add the Content-Encoding header yourself.

.addNetworkInterceptor((Interceptor.Chain chain) -> {
    Request req = chain.request();
    Headers.Builder headersBuilder = req.headers().newBuilder();

    String credential = Credentials.basic(...);
    headersBuilder.set("Authorization", credential);

    Response res = chain.proceed(req.newBuilder().headers(headersBuilder.build()).build());

    return res.newBuilder()
        .header("Content-Encoding", "gzip")
        .header("Content-Type", ""application/json")
        .build();
})

In fact, your code is a classic example of the evils of using internal code (like com.sun packages from the JDK). RealResponseBody doesn't have that constructor anymore.