csrf: prevent salt generation on every request, and add async req.csrfToken(fn)
csrf: prevent salt generation on every request, and add async req.csrfToken(fn)

khirayama/connect,gtomitsuka/connect,austincitylimits/connect,qitianchan/connect,tanveer12332/connect,mi2oon/connect,senchalabs/connect,khalerc/connect,keenwon/connect,llwanghong/connect,liuwei9413/connect,RoseTHERESA/connect,RickyDan/connect,davehorton/drachtio,dkfiresky/connect,lian774739140/connect,wghust/connect,behind2/connect,mi2oon/connect,chinazhaghai/connect