pairchat

This is a more complicated version of ../connect which allows the listener to also write back to the sender. The result is a basic pairwise (only 2 peers can connect at once) chat program.

Build a binary

go build --ldflags '-linkmode external -extldflags=-static -s -w' ./pairchat.go

If you run into glibc incompatibility, you can compile with zig/musl.

CC="zig cc -target x86_64-linux-musl -lunwind" \
CGO_ENABLED=1 \
CGO_LDFLAGS="-static" \
GOOS=linux GOARCH=amd64 \
go build -v -a -ldflags '-extldflags "-static"' ./pairchat.go

Terminal 1 (listener)

./pairchat

Terminal 2 (sender)

./pairchat -endpoint <endpoint-id>

You'll see a connection notice if the two endpoints manage to connect to each other. You can type messages on both sides of the connection, and they will appear on the other end. So Terminal 1 will see what Terminal 2 types, and Terminal 2 will see what Terminal 1 types.