Welcome, the wonderful world of writing anything in Javascript. Imagine the same thing using Promises: def proxy(dest_host, dest_port, main_task, source_so

Welcome, the wonderful world of writing anything in Javascript. Imagine the same thing using Promises: def proxy(dest_host, dest_port, main_task, source_sock, addr): main_task.cancel()\ .then(lamdba _: curio.open_connection(dest_host, dest_port))\ .then(lambda dest_sock: copy_all(source_sock, dest_sock)