Tus upload Android/Java error 400 -

i'm trying upload image tus server on android io.tus.java.client:tus-java-client:0.3.1. decided perform upload in intentservice, code (as suggested on github):

private static final string tus_url = "http://master.tus.io/files/"; private string uploadimage(resultreceiver receiver, bundle bundle, string imagepath) throws ioexception, protocolexception, urisyntaxexception     {         tusclient client = new tusclient();          client.setuploadcreationurl(new url(tus_url));         sharedpreferences pref = getsharedpreferences("tus", 0);         client.enableresuming(new tuspreferencesurlstore(pref));         file file = new file(new uri(imagepath));          final tusupload upload = new tusupload(file);          //upload.setsize(file.length());         //map<string, string> metadata = new hashmap<>();         //metadata.put("filename", file.getname());         //upload.setmetadata(metadata);          tusexecutor executor = new tusexecutor()         {             @override             protected void makeattempt() throws protocolexception, ioexception             {                 // first try resume upload. if that's not possible create new                 // upload , tusuploader in return. class responsible opening                 // connection remote server , doing uploading.                 tusuploader uploader = client.resumeorcreateupload(upload);                  // upload file in chunks of 1kb sizes.                 uploader.setchunksize(1024);                  // upload file long data available. once                 // file has been uploaded method return -1                                 {                     // calculate progress using total size of uploading file ,                     // current offset.                     long totalbytes = upload.getsize();                     long bytesuploaded = uploader.getoffset();                     long progress = (long) bytesuploaded / totalbytes * 100;                      bundle.putint("progress",progress.intvalue());                     receiver.send(status_progress,bundle);                      //system.out.printf("upload @ %06.2f%%.\n", progress);                 }                 while(uploader.uploadchunk() > -1);                  // allow http connection closed , cleaned                 uploader.finish();                  system.out.println("upload finished.");                 system.out.format("upload available at: %s", uploader.getuploadurl().tostring());             }         };         executor.makeattempts();            return java.util.uuid.randomuuid().tostring();     } 

unfortunately, keeps throwing protocolexception code 400. file url ok, i'm sure because there no ioexception thrown. after sending few chunks, stops , throws protocolexception. have tried compile official android sample, , able send half of file, same - protocolexception eror 400.

do have ideas? i'm stuck , don't know other tus protocol implementation java try (is there any?). thanks.