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c#asp.netasync-awaittask-parallel-libraryhttpcontext
user2820173
user2820173

Reputation: 328

HttpContext is lost in background thread

I have an async method, which uses HttpContext.Current, which is used by another code, which is running in background, like

var result = Task.Run(async () => await SomeMethod()).Result;

HttpContext.Current is always null though. Is there a way to pass HttpContext into background task?

Upvotes: 2

Views: 2023

Answers (1)

Stephen Cleary
Stephen Cleary

Reputation: 456322

Is there a way to pass HttpContext into background task?

Technically yes, you can set HttpContext.Current. However, you really don't want to do this. HttpContext is intended for use by only one thread at a time.

A better solution is to remove the Task.Run entirely:

await SomeMethod();

Task.Run shouldn't be used on ASP.NET in the first place.

It looks like the code may be trying to use Task.Run to do a "fire and forget", in which case Task.Run is a very dangerous and incomplete "solution". The proper solution for fire-and-forget is asynchronous messaging, i.e., a durable queue with a separate background service.

Upvotes: 7

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