ext-swooleis supported until v4.7.1, use
ext-openswoole>= v4.7.1. Latest version:
pecl install openswoole-4.9.1
<?php Swoole\Coroutine\Http2\Client->ping(): bool
true when the ping is successful and
false when the ping fails.
The ping frame is a mechanism for measuring the minimum round-trip time from the sender and determining whether an idle connection is still valid or not.
For more information on the implementation of ping frames, see the HTTP/2 Ping Frame RFC document.