txthinking/brook · error

<combined output of child connect process>

Error message

<combined output of child connect process>

What it means

In the socks5 subcommand, brook spawns itself as a child 'connect' process and this error carries the child's entire combined stdout/stderr output. It means the underlying connect process exited or failed; the message text is whatever the child printed (e.g. link parse errors, dial failures), not a specific brook failure itself.

Source

Thrown at cli/brook/main.go:2615

					return nil
				}
				if c.String("link") == "" {
					return cli.ShowSubcommandHelp(c)
				}
				socks5.Debug = true
				fmt.Println("Run brook connect to listen", c.String("socks5"))
				var cmd *exec.Cmd
				var err error
				go func() {
					var s string
					s, err = os.Executable()
					if err != nil {
						return
					}
					// TODO append global dial options
					cmd = exec.Command(s, "connect", "--link", c.String("link"), "--socks5", c.String("socks5"))
					b, _ := cmd.CombinedOutput()
					err = errors.New(string(b))
				}()
				time.Sleep(3 * time.Second)
				if err != nil {
					return err
				}
				err1 := brook.Socks5Test(c.String("socks5"), "", "", c.String("domain"), c.String("a"), c.String("dns"))
				_ = cmd.Process.Signal(syscall.SIGTERM)
				return err1
			},
		},
		&cli.Command{
			Name:  "echoserver",
			Usage: "Echo server, echo UDP and TCP address of routes",
			BashComplete: func(c *cli.Context) {
				l := c.Command.VisibleFlags()
				for _, v := range l {
					fmt.Println("--" + v.Names()[0])
				}

View on GitHub (pinned to 5cd13ef3b1)

Solutions

1. Read the embedded output to identify the child connect error
2. Verify the --link value is correct and the server is reachable
3. Run the connect subcommand directly with the same link to see the live error

When it happens

Trigger: Thrown at cli/brook/main.go:2615 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of txthinking/brook@5cd13ef3b1 (2026-09-06). Data as JSON: /api/errors/f78fbb580027a939. Report an issue: GitHub.