Function soup_sys::soup_websocket_connection_new

pub unsafe extern "C" fn soup_websocket_connection_new(
    stream: *mut GIOStream, 
    uri: *mut SoupURI, 
    type_: SoupWebsocketConnectionType, 
    origin: *const c_char, 
    protocol: *const c_char
) -> *mut SoupWebsocketConnection

This is supported on crate feature v2_50 only.