sample.GzipRequestInterceptor Maven / Gradle / Ivy
package sample;
import okhttp3.*;
import okio.BufferedSink;
import okio.GzipSink;
import okio.Okio;
import java.io.IOException;
/**
* This interceptor compresses the HTTP request body. Copied from
* https://github.com/square/okhttp/wiki/Interceptors#rewriting-requests
*/
final class GzipRequestInterceptor implements Interceptor {
@Override
public Response intercept(Chain chain) throws IOException {
Request originalRequest = chain.request();
if (originalRequest.body() == null || originalRequest.header("Content-Encoding") != null) {
return chain.proceed(originalRequest);
}
Request compressedRequest =
originalRequest
.newBuilder()
.header("Content-Encoding", "gzip")
.method(originalRequest.method(), gzip(originalRequest.body()))
.build();
return chain.proceed(compressedRequest);
}
private RequestBody gzip(final RequestBody body) {
return new RequestBody() {
@Override
public MediaType contentType() {
return body.contentType();
}
@Override
public long contentLength() {
return -1; // We don't know the compressed length in advance!
}
@Override
public void writeTo(BufferedSink sink) throws IOException {
BufferedSink gzipSink = Okio.buffer(new GzipSink(sink));
body.writeTo(gzipSink);
gzipSink.close();
}
};
}
}