drbrad / jtun2socks

This works similar to network layer socks client, written completely in java.

Hey! 🐙

I'm Brad Eagle!

• Currently: Founder of LimeReel Inc. & Uncentralized
• Previously: Full Stack Software Engineer at Yellow

Parsing Libraries I have made

Parsing	Link
Bencode	Bencode
Bencode	BencodeRust
Bencode	BencodeJS
Bencode	BencodePHP
JSON	Json
YAML	Yamler
XML	Xml

VPN apps for android

• VPN to Socket VPN to Socket
• Tunnel to Socks JTun2Socks

DHT Decentralization

• Kad4 Kademlia DHT compatible with BitTorrent protocol that uses Java Reflect
• JChord Chord implementation over TCP

jtun2socks's Issues

Username and password

Hello, does this app support username and password for server socks

How could I hide the remotePort in the TCP packet?

Thank you for this code. It's short so it's readable.

First, in NatSession, I would recommend to rename remoteAddress to remoteIP for consistency.

Secondly, this line is not "very good":
https://github.com/DrBrad/JTun2Socks/blob/master/app/src/main/java/jtun2socks/shadowrouter/org/jtun2socks/VPN/Proxy.java#L90

I think that it would be better to use session.remoteAddress. I have a C-implementation of proxy.java and I initially did getsockname for java "socket.getInetAddress().getAddress()" but it was giving me 10.8.0.2. I had to use getpeername.

To continue my point, remoteAddress is not used in proxy.java because you are putting the IP address into the source IP header. So you are duplicating information and remoteAddress is not used. Not a bug but it was confusing a little bit.

Now, as I'm doing a C-implementation of proxy.java, it's very difficult to go back from JNI to JAVA to get the NatSessionManager.getSession((short) socket.getPort()) because the class is started by a service (I could explain this more but that's not the point of the issue). My point is that if remotePort was hidden somewhere else in the socket, it could be retrieved from C without JAVA and without even the NATSession.

So, how could I hide the remotePort to retrieve it without java? Couldn't it be put where the port key is put?

How to forward UDP?

Thanks for your efforts.

Now I want to support forwarding UDP.
What time will you support UDP?
If you don't have time to support UDP soon, please guide me(documents or any relate technical) to support forwarding UDP.

Proxy server socks5-IPv6 doesn't work at all

Proxy server socks5 IPv4 work fine. But when I added a proxy server socks5 IPv6, then Internet access is lost for all content. Error message in Chrome browser ERR_SSL_PROTOCOL_ERROR.

Build failed due to client inputstream

Hey,
you did a amazing job created android socks5 client in java!
i want to use it but i get this error while building in android studio:

/home/paya/AndroidStudioProjects/JTun2Socks/app/src/main/java/jtun2socks/shadowrouter/org/jtun2socks/VPN/Proxy.java:55: error: cannot find symbol
                    clientIn = socket.getInputStream();
                    ^
  symbol:   variable clientIn
  location: class Proxy.Tunnel

i wasn't able to fix it(did build but doesn't connect)
so if u could fix it and push update it would be really helpful