diff --git a/v2/lib.go b/v2/lib.go
index b56b7d5..c1dca13 100644
--- a/v2/lib.go
+++ b/v2/lib.go
@@ -345,7 +345,18 @@ func (w Window) GetChildProcessID() uint64 {
 	return uint64(C.webui_get_child_process_id(C.size_t(w)))
 }
 
-// SetPort sets a custom web-server network port to be used by WebUI.
+// GetPort returns the network port of the running window. If the window isn't
+// running, an error is returned.
+func (w Window) GetPort() (int, error) {
+	port := int(C.webui_get_port(C.size_t(w)))
+	if port == 0 {
+		return 0, errors.New("error: failed to get port")
+	}
+	return port, nil
+}
+
+// SetPort sets a custom web-server network port to be used by WebUI. Returns
+// true if the port is free and usable by WebUI.
 func (w Window) SetPort(port uint) bool {
 	return bool(C.webui_set_port(C.size_t(w), C.size_t(port)))
 }