Socks5 not working on 4.1.8

Smack Smack Support
1

I have a server running ons aws which is working well. Furthermore I have a smack 4.1.8 client on a android device and one more on a simple java applicaiton also running 4.1.8.

I would like to use socks5 for file transfer which I enabled on my server.

On my android device I just do some sending so there is only this code:

Socks5BytestreamManager manager = Socks5BytestreamManager.getBytestreamManager(connection);
try
    {
        Socks5BytestreamSession session = manager.establishSession("receiver@myserver/Smack");
        File file = new File(fileToSend);         ObjectInputStream ois = new ObjectInputStream(new FileInputStream(file));
        OutputStream oos = session.getOutputStream();         IOUtils.copy(ois, oos);
        ois.close();
        oos.close();     } catch (XMPPException | IOException | InterruptedException | SmackException e)
    {
        e.printStackTrace();
    }

The java application gets configured like this:

socks5BytestreamManager = Socks5BytestreamManager.getBytestreamManager(xmppConnection);
    socks5BytestreamManager.addIncomingBytestreamListener(new IncomingByteStreamListener());

and the code for receiving is this:

try {
                Socks5BytestreamSession socks5BytestreamSession = request.accept();
                InputStream ois = socks5BytestreamSession.getInputStream();
                File file = new File(OutputHelper.DirectoryPath + "test");
                if(file.exists())
                {
                    file.delete();
                }
                file.createNewFile();
                FileOutputStream fos = new FileOutputStream(file);                 IOUtils.copy(ois, fos);
                ois.close();
                fos.close();             } catch (InterruptedException | XMPPException.XMPPErrorException | SmackException | IOException e) {
                e.printStackTrace();
            }

When I try to send the file, I get the following message/error from the java application:

04:25:22 PM RECV (0): <iq from='sender@myserver/Smack' to='receiver@myserver/Smack' xml:lang='en' id='9Zjua-31' type='set'><query xmlns='http://jabber.org/protocol/bytestreams' sid='js5_4232423505050900029' mode='tcp'><streamhost jid='sender@myserver/Smack' host='fe80::5054:ff:fe12:3456%eth0' port='032777'/><streamhost jid='sender@myserver/Smack' host='10.0.2.15' port='032777'/><streamhost jid='proxy.myserver' host='010.0.0.101' port='032777'/></query></iq>
org.jivesoftware.smack.XMPPException$XMPPErrorException: Could not establish socket with any provided host
04:25:30 PM SENT (0): <iq to='sender@myserver/Smack' id='9Zjua-31' type='error'><error type='cancel'><item-not-found xmlns='urn:ietf:params:xml:ns:xmpp-stanzas'/><text xmlns='urn:ietf:params:xml:ns:xmpp-stanzas' xml:lang='en'>Could not establish socket with any provided host</text></error></iq>

What am I missing? I have spent much time on google to solve this issue but couldn’t find anything usefull…

I would go about the

item-not-found xmlns='urn:ietf:params:xml:ns:xmpp-stanzas'

part of the error, but so far I could not figure out anything.

Thanks for your help!