tailscale/tailscale · error

want GET to list targets

Error message

want GET to list targets

What it means

serveFileTargets is read-only and only supports GET. Any other method is rejected with 400 (not 405) by this handler.

Source

Thrown at feature/taildrop/localapi.go:484

	}
	rc, size, err := ext.OpenFile(name)
	if err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}
	defer rc.Close()
	w.Header().Set("Content-Length", fmt.Sprint(size))
	w.Header().Set("Content-Type", "application/octet-stream")
	io.Copy(w, rc)
}

func serveFileTargets(h *localapi.Handler, w http.ResponseWriter, r *http.Request) {
	if !h.PermitRead {
		http.Error(w, "access denied", http.StatusForbidden)
		return
	}
	if r.Method != "GET" {
		http.Error(w, "want GET to list targets", http.StatusBadRequest)
		return
	}

	ext, ok := ipnlocal.GetExt[*Extension](h.LocalBackend())
	if !ok {
		http.Error(w, "misconfigured taildrop extension", http.StatusInternalServerError)
		return
	}

	fts, err := ext.FileTargets()
	if err != nil {
		localapi.WriteErrorJSON(w, err)
		return
	}
	mak.NonNilSliceForJSON(&fts)
	w.Header().Set("Content-Type", "application/json")
	json.NewEncoder(w).Encode(fts)
}

View on GitHub (pinned to 6e0912f979)

Solutions

1. Use HTTP GET to list taildrop targets.

When it happens

Trigger: Thrown at feature/taildrop/localapi.go:484 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of tailscale/tailscale@6e0912f979 (2026-08-18). Data as JSON: /api/errors/db90bddd82076232. Report an issue: GitHub.