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|
package main
import (
"errors"
"fmt"
"log"
"net/http"
"os"
"strings"
"github.com/spf13/cobra"
)
var rootCmd = &cobra.Command{
Use: "websocket-proxy",
Version: "0.1.0",
Short: "Proxy TCP connections over a websocket",
}
var clientCmd = &cobra.Command{
Use: "client [server host]",
Short: "Act as a client for a websocket-proxy server",
Args: func(cmd *cobra.Command, args []string) error {
if len(args) != 1 || args[0] == "" {
return errors.New("Server host is a required argument")
}
if !strings.HasPrefix(args[0], "ws://") && !strings.HasPrefix(args[0], "wss://") {
return errors.New("Server host format is ws[s]://host[:port]/[path]")
}
return nil
},
Run: func(cmd *cobra.Command, args []string) {
listenOn := cmd.Flag("listen").Value.String()
h := &ClientHandler{
SocketListenOn: listenOn,
WebsocketServer: args[0],
}
log.Printf("Serving on %s", listenOn)
h.Run()
},
}
var serverCmd = &cobra.Command{
Use: "server [next-hop host]",
Short: "Serve websocket proxy client",
Args: func(cmd *cobra.Command, args []string) error {
if len(args) != 1 || args[0] == "" {
return errors.New("Next-hop host is a required argument")
}
return nil
},
Run: func(cmd *cobra.Command, args []string) {
listenOn := cmd.Flag("listen").Value.String()
log.Printf("Serving on %s", listenOn)
http.Handle("/", NewServerHandler(args[0]))
log.Fatal(http.ListenAndServe(listenOn, nil))
},
}
func main() {
rootCmd.AddCommand(clientCmd)
rootCmd.AddCommand(serverCmd)
clientCmd.Flags().StringP("listen", "l", ":9013", "[address]:port to bind for serving clients")
serverCmd.Flags().StringP("listen", "l", ":9012", "[address]:port to bind for serving clients")
if err := rootCmd.Execute(); err != nil {
fmt.Println(err)
os.Exit(1)
}
}
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