Exemplo n.º 1
0
// NewClient makes a netchan connection from the given connection,
// imports the rpc service from that, and returns both in a new Client
// instance.  It assumes that the server has been started with Server.
func NewClient(conn io.ReadWriter) (*Client, error) {
	imp := netchan.NewImporter(conn)
	srvconn, err := ncnet.Dial(imp, "ncrpc.ctl")
	if err != nil {
		return nil, err
	}
	return &Client{imp, rpc.NewClient(srvconn)}, nil
}
Exemplo n.º 2
0
// Serve announces an RPC service on the client using the given name
// (which must currently be unique amongst all clients).
func (c *Client) Serve(clientName string, rpcServer *rpc.Server) error {
	var clientId string
	rpcServer.RegisterName("ClientRPC", clientRPC{}) // TODO better name
	if err := c.Server.Call("Ncnet-publisher.Publish", &clientName, &clientId); err != nil {
		return err
	}
	clientconn, err := ncnet.Dial(c.Importer, clientId)
	if err != nil {
		return err
	}

	go rpcServer.ServeConn(clientconn)
	return nil
}
Exemplo n.º 3
0
func main() {
	flag.Usage = func() {
		fmt.Fprintf(os.Stderr, "usage: share [options] tcp-addr\n")
		flag.PrintDefaults()
		os.Exit(2)
	}
	flag.Parse()
	if flag.NArg() != 1 {
		flag.Usage()
		return
	}
	addr := flag.Arg(0)
	if *server {
		exp := netchan.NewExporter()
		if err := exp.ListenAndServe("tcp", addr); err != nil {
			log.Fatal("listen failed: ", err)
		}
		listener, err := ncnet.Listen(exp, "ctl")
		if err != nil {
			log.Fatal("ncnet listen failed: ", err)
		}
		srv := &Server{
			exp:     exp,
			clients: make(map[string]*rpc.Client),
		}
		rpcsrv := rpc.NewServer()
		if err := rpcsrv.Register(srv); err != nil {
			log.Fatal("rpcsrv register failed: ", err)
		}
		rpcsrv.Accept(listener)
		listener.Close()
		return
	}

	imp, err := netchan.Import("tcp", addr)
	if err != nil {
		log.Fatal("netchan import failed: ", err)
	}
	srvconn, err := ncnet.Dial(imp, "ctl")
	if err != nil {
		log.Fatal("ncnet dial failed: ", err)
	}
	srv := rpc.NewClient(srvconn)

	var clientId string
	if err := srv.Call("Server.Publish", clientName, &clientId); err != nil {
		log.Fatal("publish failed: %v", err)
	}

	clientsrv := rpc.NewServer()
	if err := clientsrv.Register(Client{}); err != nil {
		log.Fatal("clientsrv register failed: ", err)
	}

	clientconn, err := ncnet.Dial(imp, clientId)
	if err != nil {
		log.Fatalf("ncnet dial %q failed: %v", clientId, err)
	}

	go clientsrv.ServeConn(clientconn)
	interact(srv)
	clientconn.Close()
	time.Sleep(0.1e9) // wait for close to propagate
}