Retrofit + OkHttp + GZIP-ed JSON

Question

I'm new to Retrofit but it seems really powerful. Everything works fine with a normal JSON, but as soon as I try a GZIPed one I just get an error: I/System.out(14883): ------retrofit.RetrofitError: retrofit.converter.ConversionException: com.google.gson.JsonSyntaxException: java.lang.IllegalStateException: Expected BEGIN_OBJECT but was STRING at line 1 column 1 Obviously the the gibberish symbols I see in the Log cannot be parsed as JSON. I thought okHttp is catchig that gzip stuff correctly? What am I missing? These jars are in my libs folder: ``` retrofit-1.6.1.jar okhttp-2.0.0.jar gson-2.2.4.jar ``` This way I'm starting the call: ``` public interface OvlService { @GET("/gziptest.gz") void getOvls(Callback<OvlWrapper> callback); } ... OkHttpClient okHttpClient = new OkHttpClient(); Executor executor = Executors.newCachedThreadPool(); RestAdapter restAdapter = new RestAdapter.Builder() .setEndpoint("http://my.domain") // The base API endpoint. .setLogLevel(RestAdapter.LogLevel.FULL)…

Accepted Answer

Thanks to Jake Whartons comment it turned out the `Content-Encoding: gzip` header was missing. Since I told the server to add these headers, everything works fine:

```
<?php
$data = ...;
$gzdata = gzencode($data, 9, FORCE_GZIP);
header('Content-Encoding: gzip');
header('Content-Length: '.strlen($gzdata));
... ?>
```

Retrofit + OkHttp + GZIP-ed JSON

Solution

Problem