Part[] parts = {new FilePart("meta", metaFile)};
String url = host.getHref(Path.path("/source.txt/.zsync"));
String ranges = host.doPost(url, null, parts);
System.out.println("ranges: " + ranges);
RangeListParser listParser = new RangeListParser();
List<Range> list = listParser.parse(new ByteArrayInputStream(ranges.getBytes()));
LocalFileRangeLoader fileRangeLoader = new LocalFileRangeLoader(fIn);
byte[] data = fileRangeLoader.get(list);
System.out.println("sending bytes: " + data.length);
InputStream in = new ByteArrayInputStream(data);