tupd 0.6 - small bugfix

the server component had a small bug, empty checking the wrong variable before building a list of allowed zones

when using a config without any Fqdns defined this would result in the server refusing the client access to tunnel anything if any zones where about to be used

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tup proxies services on the local network to a remote gateway, all traffic between the remote server and the service on the local network is sent through a wireguard tunnel

think of tup as an open source and self-hosted alternative to ngrok and cloudflare tunnel

tupd (the server) can be found at: https://drive.proton.me/urls/GEJM1HT0DW#aOop4p7zxaPA

the tup client can be found at: https://drive.proton.me/urls/63SE9PW020#GFzZrprg9wjZ

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I also noticed all file extensions were not inspectable directly in the drive (even though everything is only text files), I apologize for that, I believe transparancy is a very important key factor

I've complemented with .diff files generated with diff from GNU diffutils, there are 'full' diff files for both tup and tupd (ending with _full.diff), and there is also a diff file for only the changes between tupd-0.5 and tupd-0.6 (tupd-0.6.diff)

the 'full' diff files can also be applied to an empty directory with GNU patch like this:

mkdir tupd-0.6
patch --directory=tupd-0.6/ --strip=1 < tupd-0.6_full.diff

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Since my project is not uploaded by me to any git service many people didn't look on how it can be used so I want to give a few examples of the client, more explanations and examples can be found in the README.md and EXAMPLE.md of the client

Syntax: tup [-zone <zone>] [@][host]:[#]<port>

Examples:

tup :8080 this would proxy http://127.0.0.1:8080 onto a random subdomain on default zone, for example: https://xyz123.zone.domain.tld

tup 192.168.1.11:8080 this would proxy http://192.168.1.11:8080 onto a random subdomain on default zone

Syntax: tup -fqdn <domain> [@][host]:[#][@]<port>

Examples:

tup -fqdn sub.domain.tld :8080 this would proxy http://127.0.0.1:8080 directly onto https://sub.domain.tld

tup -fqdn sub.domain.tld 192.168.1.11:@8443 this would proxy https://192.168.1.11:8443 directly onto https://sub.domain.tld, skipping caddy and its tls termination on the server, same as a raw tcp proxy / sni proxy

Syntax: tup -udp|-tcp [rport:][@][host]:<port>

Examples:

tup -udp :27015 this would proxy udp://127.0.0.1:27015 onto a random UDP port on the server

tup -udp 27016:27015 this would proxy udp://127.0.0.1:27015 onto UDP port 27016 on the server

tup -udp 27016:192.168.1.11:27015 this would proxy udp://192.168.1.11:27015 onto UDP port 27016 on the server

tup -tcp :3306 this would proxy tcp://127.0.0.1:3306 onto a random TCP port on the server

I also want to clarify that the code is released with the Unlicense template, dedicating my software to the public domain