c# - How to fire-and-forget in WCF when using wsHttpBinding -
i have wcf service hosted in iis , consumed asp.net application. service , client on diferent servers , communicate on internet. message security on wshttpbinding used security model (using x.509 certificate). i tested service fiddler , seems ok unless single call there 4 sessions in fiddler (two round-trips). don't need sessions wcf , want calling threads (which asp.net worker threads), not blocked when calling wcf method. how can achieve fire-and-forget pattern when using wcf service (i can change service contract if needed) ? fire , forget (one-way operation) says operation doesn't return result , client doesn't have wait server processing. has nothing infrastracture calls see in fiddler. first of turn off estabilishsecuritycontext , negotiateservicecredentials in security element (these turned on default) , try again.