Method send

packages/core/xhr/index.ts:225–265

(data?: any)

	}

	public send(data?: any) {
		this._errorFlag = false;
		this._response = null;
		this._responseTextReader = null;
		this._headers = null;
		this._status = null;

		if (this._readyState !== this.OPENED || this._sendFlag) {
			throw new Error("Failed to execute 'send' on 'XMLHttpRequest': " + "The object's state must be OPENED.");
		}

		if (isString(data) && this._options.method !== 'GET') {
			//The Android Java HTTP lib throws an exception if we provide a
			//a request body for GET requests, so we avoid doing that.
			//Browser implementations silently ignore it as well.
			this._options.content = data;
		} else if (data instanceof FormData) {
			this._options.content = (<FormData>data).toString();
		} else if (data instanceof Blob) {
			this.setRequestHeader('Content-Type', data.type);
			this._options.content = Blob.InternalAccessor.getBuffer(data);
		} else if (data instanceof ArrayBuffer) {
			this._options.content = data;
		}

		this._sendFlag = true;

		this.emitEvent('loadstart');

		request(this._options)
			.then((r) => {
				if (!this._errorFlag && this._sendFlag) {
					this._loadResponse(r);
				}
			})
			.catch((e) => {
				this._errorFlag = true;
				this._sendFlag = false;
				this._setRequestError('error', e);
			});
	}

	public setRequestHeader(header: string, value: string) {
		if (this._readyState !== this.OPENED || this._sendFlag) {