A DNS proxy that forwards local UDP DNS queries to a DNSCrypt v2 resolver.

This tool acts as a local DNS proxy, receiving standard DNS queries on UDP port 53 and forwarding them securely to a DNSCrypt v2 resolver.

Running the Application:

By default, dns2tcp uses a pre-configured public DNSCrypt resolver (AdGuard DNS):

# Requires privileges to bind to port 53, often sudo is needed.
sudo ./dns2tcp

Using a Custom DNSCrypt Resolver:

You can specify a different DNSCrypt v2 resolver using its DNS Stamp string via the -stamp command-line flag:

sudo ./dns2tcp -stamp "sdns://YOUR_DNSCRYPT_STAMP_HERE"

Public DNSCrypt resolver stamps can be found on sites like https://dnscrypt.info/stamps and other curated lists.

Testing:

Once dns2tcp is running, you can point a DNS client like dig or nslookup to 127.0.0.1 to test it:

dig @127.0.0.1 yourdomain.com

This project is written in Go.

• Go (version 1.16 or later recommended).

1. Clone the repository (if you haven't already).
2. Navigate to the project directory.
3. To build the executable:

   go build dns2tcp.go

   This will create an executable named dns2tcp (or dns2tcp.exe on Windows) in the current directory.

Unit tests are provided to verify functionality, especially the DNS message parsing.

1. Ensure Go modules are initialized (this should have been done if tests were run previously):

   go mod init dns2tcp 
   # (Or your chosen module name if different)

2. To run the tests:

   go test -v