current OperationContext is null in WCF Windows Service

Question

I am trying to set up a Publish/Subscribe system using WCF and where the WCF server is in a Windows service. The binding is net.TCP. The service is providing a \"Subscribe

Answer 1

I've faced this issue and non of the solutions worked and Most Important thing is if you're using

async await 
OperationContext.Current; will be null

My usage is to get Ip so used it like this before any awaitable call

var clientIpAddress = System.Web.HttpContext.Current?.Request?.UserHostAddress;

After the first await statement in your async service operation, OperationContext.Current could be null because the rest of the method body may be running on a different thread (and OperationContext does not flow between threads

So to get it you can write your code before any awaitable action

May be it'll help someone :)