OkHttp RequestBody based in InputStream

InputStreamRequestBody.java

public class InputStreamRequestBody extends RequestBody {
    private final InputStream inputStream;
    private final MediaType contentType;

    public InputStreamRequestBody(MediaType contentType, InputStream inputStream) {
        if (inputStream == null) throw new NullPointerException("inputStream == null");
        this.contentType = contentType;
        this.inputStream = inputStream;
    }

    @Nullable
    @Override
    public MediaType contentType() {
        return contentType;
    }

    @Override
    public long contentLength() throws IOException {
        return inputStream.available() == 0 ? -1 : inputStream.available();
    }

    @Override
    public void writeTo(@NonNull BufferedSink sink) throws IOException {
        Source source = null;
        try {
            source = Okio.source(inputStream);
            sink.writeAll(source);
        } finally {
            Util.closeQuietly(source);
        }
    }
}

UriRequestBody.java

public class UriRequestBody extends RequestBody {
    private final MediaType contentType;
    private final ContentResolver contentResolver;
    private final Uri uri;

    public UriRequestBody(MediaType contentType, ContentResolver contentResolver, Uri uri) {
        if (uri == null) throw new NullPointerException("uri == null");
        this.contentType = contentType;
        this.contentResolver = contentResolver;
        this.uri = uri;
    }

    @Nullable
    @Override
    public MediaType contentType() {
        return contentType;
    }

    @Override
    public long contentLength() throws IOException {
        return -1;
    }

    @Override
    public void writeTo(@NonNull BufferedSink sink) throws IOException {
        Source source = null;
        try {
            source = Okio.source(contentResolver.openInputStream(uri));
            sink.writeAll(source);
        } finally {
            Util.closeQuietly(source);
        }
    }
}