The source code

    /**
     * @class Ext.Direct.Transaction
     * @extends Object
     * <p>Supporting Class for Ext.Direct (not intended to be used directly).</p>
     * @constructor
     * @param {Object} config
     */
    Ext.Direct.Transaction = function(config){
        Ext.apply(this, config);
        this.tid = ++Ext.Direct.TID;
        this.retryCount = 0;
    };
    Ext.Direct.Transaction.prototype = {
        send: function(){
            this.provider.queueTransaction(this);
        },

        retry: function(){
            this.retryCount++;
            this.send();
        },

        getProvider: function(){
            return this.provider;
        }
    };