sendAsync
open fun sendAsync(msg: Message, ioPriority: <Error class: unknown class>, cancellable: <Error class: unknown class>? = null, callback: <Error class: unknown class>?)
Asynchronously sends @msg and waits for the beginning of a response.
When @callback is called, then either @msg has been sent, and its response headers received, or else an error has occurred. Call method@Session.send_finish to get a class@Gio.InputStream for reading the response body.
See method@Session.send for more details on the general semantics.
Parameters
msg
a #SoupMessage
ioPriority
the I/O priority of the request
cancellable
a #GCancellable
callback
the callback to invoke