HttpContext .NET core saving instance in Middleware

问题

Is it safe to store an instance of HttpContext in a middleware?

Example:

public class TestMiddleware
{        
    private readonly RequestDelegate next;    
    private HttpContext context;
    public TestMiddleware(RequestDelegate next)
    {
        this.next = next;
    }

    public async Task Invoke(HttpContext context)        
    {
        try
        {
            this.context = context;

I would like to use it in other private methods to work on it, so I can either pass it around as parameter to those function or use it as shown in the example.

But is it thread safe?

回答1:

But is it thread safe?

No it's not, because middleware are necessarily singletons. If you store a specific HttpContext in a shared field, it will be potentially reused during another request (which would be terrible).

来源：https://stackoverflow.com/questions/38854690/httpcontext-net-core-saving-instance-in-middleware