netbird/client/internal/proxy/noproxy.go

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package proxy
import (
log "github.com/sirupsen/logrus"
"github.com/wiretrustee/wiretrustee/iface"
"net"
)
// NoProxy is used when there is no need for a proxy between ICE and Wireguard.
// This is possible in either of these cases:
// - peers are in the same local network
// - one of the peers has a public static IP (host)
// NoProxy will just update remote peer with a remote host and fixed Wireguard port (r.g. 51820).
// In order NoProxy to work, Wireguard port has to be fixed for the time being.
type NoProxy struct {
config Config
}
func NewNoProxy(config Config) *NoProxy {
return &NoProxy{config: config}
}
func (p *NoProxy) Close() error {
// noop
return nil
}
// Start just updates Wireguard peer with the remote IP and default Wireguard port
func (p *NoProxy) Start(remoteConn net.Conn) error {
log.Debugf("using NoProxy while connecting to peer %s", p.config.RemoteKey)
addr, err := net.ResolveUDPAddr("udp", remoteConn.RemoteAddr().String())
if err != nil {
return err
}
addr.Port = iface.DefaultWgPort
err = p.config.WgInterface.UpdatePeer(p.config.RemoteKey, p.config.AllowedIps, DefaultWgKeepAlive,
addr, p.config.PreSharedKey)
if err != nil {
return err
}
return nil
}
func (p *NoProxy) Type() Type {
return TypeNoProxy
}