Support disabling the creation of Request-Context header via configuration

[juho-hanhimaki]

Repro Steps

1. Create ASP.NET Core project and enable Application Insights.

Actual Behavior

Request-Context HTTP header gets set for every (except first?) request.

Expected Behavior

Ability to disable the creation of Request-Context header via configuration or other method.

Version Info

SDK Version : 2.2.1
.NET Version: 2.0.5

Workaround

Custom middleware that removes the header.

            app.Use((context, next) =>
            {
                context.Response.Headers.Remove("Request-Context");
                return next();
            });

Motivation

APIs for Industrial Internet and other scenarios where the bandwidth and client resources are limited and should be used sparingly.

[cijothomas]

https://github.com/Microsoft/ApplicationInsights-aspnetcore/wiki/Dependency-Tracking-and-Performance-Counter-Collection#configuring-telemetry-module-services - Please let me know if this wiki information is useful and can help you.

[cijothomas]

Sorry I misread the issue.
As of now there are no config options to achieve this. We are working on config story for aspnet core sdk, and will take this one as part of it.

[cijothomas]

This was accidently closed. Need to be addressed along with this:
#650

[lmolkova]

Fixed in #716, set ApplicationInsightsServiceOptions.RequestCollectionOptions.InjectResponseHeaders to false to disable response header injection.