WebSockets: throw error if trying to send() before open() in MessageChannel
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@ -61,7 +61,11 @@ export class MessageChannel {
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}
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send (msg) {
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this.socket.send(msg.toJsonText());
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if (this.socket) {
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this.socket.send(msg.toJsonText());
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} else {
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throw Error('MessageChannel: cannot call send() before open()');
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}
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}
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closeCallback () {
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