CorrelationIdMiddleware.cs

public class CorrelationIdMiddleware
{
    private readonly RequestDelegate _next;
    
    public CorrelationIdMiddleware(RequestDelegate next)
    {
        _next = next ?? throw new ArgumentNullException(nameof(next));
    }

    public Task Invoke(HttpContext context)
    {
        if (context.Request.Headers.TryGetValue("X-Correlation-Id", out StringValues correlationId))
        {
            context.TraceIdentifier = correlationId;
        }

        return _next(context);
    }
}