move the go sdk into subdir

sdk/golang/examples/pastebin/cmd/copyto/main.go

@@ -0,0 +1,86 @@
+package main
+
+import (
+	"errors"
+	"fmt"
+	"github.com/michaelquigley/pfxlog"
+	"github.com/openziti/zrok/environment"
+	"github.com/openziti/zrok/sdk/golang/sdk"
+	"github.com/sirupsen/logrus"
+	"io"
+	"net"
+	"os"
+	"os/signal"
+	"syscall"
+)
+
+func init() {
+	pfxlog.GlobalInit(logrus.WarnLevel, pfxlog.DefaultOptions())
+}
+
+func main() {
+	data, err := loadData()
+	if err != nil {
+		panic(err)
+	}
+
+	root, err := environment.LoadRoot()
+	if err != nil {
+		panic(err)
+	}
+
+	shr, err := sdk.CreateShare(root, &sdk.ShareRequest{
+		BackendMode: sdk.TcpTunnelBackendMode,
+		ShareMode:   sdk.PrivateShareMode,
+		Target:      "pastebin",
+	})
+	if err != nil {
+		panic(err)
+	}
+
+	fmt.Printf("access your pastebin using 'pastefrom %v'\n", shr.Token)
+
+	listener, err := sdk.NewListener(shr.Token, root)
+	if err != nil {
+		panic(err)
+	}
+
+	c := make(chan os.Signal)
+	signal.Notify(c, os.Interrupt, syscall.SIGTERM)
+	go func() {
+		<-c
+		if err := sdk.DeleteShare(root, shr); err != nil {
+			panic(err)
+		}
+		_ = listener.Close()
+		os.Exit(0)
+	}()
+
+	for {
+		if conn, err := listener.Accept(); err == nil {
+			go handle(conn, data)
+		} else {
+			panic(err)
+		}
+	}
+}
+
+func loadData() ([]byte, error) {
+	stat, _ := os.Stdin.Stat()
+	if stat.Mode()&os.ModeCharDevice == 0 {
+		data, err := io.ReadAll(os.Stdin)
+		if err != nil {
+			return nil, err
+		}
+		return data, nil
+	} else {
+		return nil, errors.New("'copyto' requires input from stdin; direct your paste buffer into stdin")
+	}
+}
+
+func handle(conn net.Conn, data []byte) {
+	_, err := conn.Write(data)
+	if err != nil {
+		fmt.Printf("error: %v\n", err)
+	}
+}