feat(cli): add down command to kill daemon and cleanup

Author: alysnnix

cmd/devproxy/main.go

@@ -23,13 +23,15 @@ import (
 func main() {
 	if len(os.Args) < 2 {
 		fmt.Fprintln(os.Stderr, "usage: devproxy <command>")
-		fmt.Fprintln(os.Stderr, "commands: daemon, status, cleanup, doctor, windows-setup, windows-cleanup")
+		fmt.Fprintln(os.Stderr, "commands: daemon, down, status, cleanup, doctor, windows-setup, windows-cleanup")
 		os.Exit(1)
 	}
 
 	switch os.Args[1] {
 	case "daemon":
 		runDaemon()
+	case "down":
+		runDown()
 	case "status":
 		runStatus()
 	case "cleanup":
@@ -67,6 +69,42 @@ func runDaemon() {
 	}
 }
 
+func runDown() {
+	// Find and kill all devproxy daemon processes
+	out, err := exec.Command("pgrep", "-f", "devproxy daemon").Output()
+	if err != nil {
+		fmt.Println("No devproxy daemon running")
+		return
+	}
+
+	pids := strings.Fields(strings.TrimSpace(string(out)))
+	myPid := fmt.Sprintf("%d", os.Getpid())
+
+	killed := 0
+	for _, pid := range pids {
+		if pid == myPid {
+			continue
+		}
+		if err := exec.Command("kill", "-9", pid).Run(); err != nil {
+			fmt.Fprintf(os.Stderr, "failed to kill PID %s: %v\n", pid, err)
+		} else {
+			fmt.Printf("killed devproxy daemon (PID %s)\n", pid)
+			killed++
+		}
+	}
+
+	if killed == 0 {
+		fmt.Println("No devproxy daemon running")
+		return
+	}
+
+	// Cleanup stale state
+	s := state.New("")
+	m := ipman.New(s)
+	m.CleanupLoopbackIPs()
+	fmt.Println("Cleaned up loopback IPs")
+}
+
 func runStatus() {
 	client := unixClient("/run/devproxy/devproxy.sock")
 	resp, err := client.Get("http://devproxy/status")