diff options
| -rw-r--r-- | share/web_surfaces/shared/channel.js | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/share/web_surfaces/shared/channel.js b/share/web_surfaces/shared/channel.js index ae02aad8bd..99a80fd354 100644 --- a/share/web_surfaces/shared/channel.js +++ b/share/web_surfaces/shared/channel.js @@ -61,7 +61,11 @@ export class MessageChannel { } send (msg) { - this.socket.send(msg.toJsonText()); + if (this.socket) { + this.socket.send(msg.toJsonText()); + } else { + throw Error('MessageChannel: cannot call send() before open()'); + } } closeCallback () { |