I use Tornado to work with the client application using Javascript. For data exchange uses BSON. Because Tornado to send data uses JSON, I wrote my function send via Websocket:
def write_bson(self, message):
message = BSON.encode(message)
self.ws_connection.write_message(message, binary=True)
Because "binary=True" in the browser I get a Blob and not understand how to perform BSON decode the received message.
I tried the following way to perform decode, in the comments I specified the output console.log:
t = new WebSocket(url);
t.onmessage = function(event) {
console.log(event.data); // Blob { size: 390, type: "" }
console.log(BSON.deserialize(event.data)); // Error: corrupt bson message
var reader = new FileReader();
reader.onload = function(e) {
console.log(e.target.result); // ArrayBuffer { byteLength: 390 }
};
var data = reader.readAsArrayBuffer(event.data);
console.log(BSON.deserialize(data)); // Error: corrupt bson message
How do I decode BSON?
var reader = new FileReader();
reader.onload = function() {
uint8Array = new Uint8Array(this.result);
console.log(BSON.deserialize(uint8Array));
}
reader.readAsArrayBuffer(event.data);