HTTPClient for ASP.NET core 2.0

The following articles explain the issue using HttpClient class:

https://aspnetmonsters.com/2016/08/2016-08-27-httpclientwrong/

http://www.nimaara.com/2016/11/01/beware-of-the-net-httpclient/

As per ASP.NET 2.1 road map a default HttpClient Service will be available. Until the framework available, I'm using the below implementation of HttpClient

https://gist.github.com/ajopjo/796ddf8d2f44dd3dbf6268da179cb239

If you find any issues with the implementation, please let me know.

Integrating Serilog to ASP.NET Core

If you are not using the seri log configuration package and want to set up serilog based on app specific configuration use

webHostBuilder.ConfigureLogging((hostingcontext, logging) =>
            {
                var logSettings = new LogConfiguration();
//my custom section
                hostingcontext.Configuration.GetSection("LogSettings").Bind(logSettings);
                if (logSettings.Sink.Equals("rollingFile"))
                {
                    Log.Logger = new LoggerConfiguration()
                                     .MinimumLevel.Debug()
                                     .MinimumLevel.Override("Microsoft", Information)
                                     .Enrich.FromLogContext()
                                     .WriteTo.RollingFile(logSettings.Url)
                                     .CreateLogger();
                }
                else
                {
                    Log.Logger = new LoggerConfiguration()
                                    .MinimumLevel.Debug()
                                    .MinimumLevel.Override("Microsoft", Information)
                                    .Enrich.FromLogContext()
                                    .WriteTo.Seq(logSettings.Url)
                                    .CreateLogger();
                }

                var levelSwitch = new LoggingLevelSwitch();
                int.TryParse(logSettings.LogLevel, out var level);
                levelSwitch.MinimumLevel = (LogEventLevel)level;
                logging.AddSerilog(dispose: true);
            });

Autofac dependency injection per request based on header parameter ASP.NET Core2.0

   builder.Register(c =>
            {
                string dependencyName= c.Resolve<IHttpContextAccessor>().HttpContext.Request.Headers[Constants.CountryHeader];
             
                return c.ResolveNamed<interface>(dependencyName);
            }).InstancePerLifetimeScope();

and in the module
   protected override void Load(ContainerBuilder builder)
        {
            //register modules here
            builder.RegisterType<ClassName>().Named<Interfacer>("Name of dependency");
}