blob.arrayBuffer is not a function

Cocos Creator
#1

Hi everyone.
I need to use WebSocket to communicate with my server-side. Everything works well in the browser, but I have ‘blob.arrayBuffer is not a function’ in ios.
Here is my code:

    public async onSocketMessage(event) {
        let blob = event.data as Blob;
        const buffer = await blob.arrayBuffer();
        const uint8ArrayNew = new Uint8Array(buffer);
        this.parseMessage(uint8ArrayNew);
    }

My server-side sends a Blob data type, then I need parse this blob to a response object. Please help me fix this problem. Is there any other way ?
Thank you so much.

#2

My mistake , event.data is ArrayBuffer.
Thank you.

#3

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