Add ipn.dialTLS(addr, opts?) which dials a TCP connection through
the Tailscale dialer and performs a TLS handshake on top, returning
a JS Conn just like ipn.dial.
WASM has no system root pool, so verification defaults to the
baked-in LetsEncrypt ISRG roots already linked via net/bakedroots.
That covers any tailnet HTTPS endpoint provisioned via
`tailscale cert`. Callers can override with opts.caCerts (PEM) or
bypass entirely with opts.insecureSkipVerify, and override SNI with
opts.serverName.
Marginal binary cost is ~10 KiB on top of the existing ~31.6 MiB
wasm: crypto/tls and the x509 verification path are already pulled
in by control/controlclient and net/tlsdial.
Wire up the userspace networking primitives to the JS bridge so
browser callers can initiate outbound and receive inbound traffic
over the Tailscale network:
- ipn.dial(network, addr) wraps a tsdial UserDial into a JS Conn
with read/write/close/localAddr/remoteAddr.
- ipn.listen(network, addr) wraps a netstack ListenPacket into a
JS PacketConn with readFrom/writeTo/close/localAddr.
- ipn.listenICMP("icmp4"|"icmp6"|"icmp") creates a raw ICMP
endpoint on the underlying gVisor stack and wraps it as a
PacketConn for sending/receiving ping traffic.
To support listenICMP, netstack.Impl gains a Stack() accessor that
returns the underlying *stack.Stack so jsIPN can call NewEndpoint
with icmp.ProtocolNumber4/6.
Binary I/O uses js.CopyBytesToGo / js.CopyBytesToJS to move bytes
across the syscall/js boundary without base64 round-trips.
codinget