Run-time configuration options for networking

HTTP/2 protocol

	Setting name	Values
runtimeconfig.json	`System.Net.Http.SocketsHttpHandler.Http2Support`	`false` - disabled `true` - enabled
Environment variable	`DOTNET_SYSTEM_NET_HTTP_SOCKETSHTTPHANDLER_HTTP2SUPPORT`	`0` - disabled `1` - enabled

Configures whether high-level networking APIs, such as HttpClient, use System.Net.Http.SocketsHttpHandler or the implementation of System.Net.Http.HttpClientHandler that's based on libcurl.
Default: Use System.Net.Http.SocketsHttpHandler (true).
You can configure this setting programmatically by calling the AppContext.SetSwitch method.

	Setting name	Values
runtimeconfig.json	`System.Net.Http.UseSocketsHttpHandler`	`true` - enables the use of SocketsHttpHandler `false` - enables the use of HttpClientHandler
Environment variable	`DOTNET_SYSTEM_NET_HTTP_USESOCKETSHTTPHANDLER`	`1` - enables the use of SocketsHttpHandler `0` - enables the use of HttpClientHandler