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magic-wormhole-transit-relay

Transit Relay server for Magic-Wormhole

This repository implements the Magic-Wormhole "Transit Relay", a server that helps clients establish bulk-data transit connections even when both are behind NAT boxes. Each side makes a TCP connection to this server and presents a handshake. Two connections with identical handshakes are glued together, allowing them to pretend they have a direct connection.

This server used to be included in the magic-wormhole repository, but was split out into a separate repo to aid deployment and development.

Quick Example (running on a VPS)

If you would like to set up a transit server on a VPS or other publicly-accessible server running Ubuntu:

# Install Python 3 pip and twist
apt install python3-pip python3-twisted

# Install magic-wormhole-transit-relay
pip3 install magic-wormhole-transit-relay

# Run transit-relay in the background
twistd3 transitrelay

# Check on logs
cat twistd.log  # or `tail -f twistd.log`

# Kill transit-relay
kill `cat twistd.pid`

Assuming you haven't killed transit-relay, when you do wormhole send, make sure you add the --transit-helper argument, like:

wormhole send --transit-helper=tcp:[server ip here]:4001 file-to-send

On the receiving end, paste in the command output by wormhole send.

Further Instructions

See docs/running.md for instructions to launch the server.