Special method sending a SWITCHING_PROTOCOLS response to the client.
Notice: For the overload that returns a ConnectionStream, it must be ensured that the returned instance doesn't outlive the request handler callback.
Notice: The overload which accepts a connection_handler alias is used for HTTP/1 to HTTP/2 switching in cleartext HTTP
The protocol set in the "Upgrade" header of the response. Use an empty string to skip setting this field.
See Implementation
Special method sending a SWITCHING_PROTOCOLS response to the client.
Notice: For the overload that returns a ConnectionStream, it must be ensured that the returned instance doesn't outlive the request handler callback.
Notice: The overload which accepts a connection_handler alias is used for HTTP/1 to HTTP/2 switching in cleartext HTTP