constructor() {
        this._id = generateConnectionId();
        this._timing = {
            wallTime: Date.now() / 1000,
            start: getTime()
        };
        this._chunks = [];
        this._request = null;
        this._response = null;
        this._binary = null;
        this._resourceType = 'Other';
        this._encodedSize = null;
        this._responseBody = null;
    }
All information regarding request and corresponding response - includes timing information.