| 1: | <?php |
| 2: | |
| 3: | declare(strict_types=1); |
| 4: | |
| 5: | /** |
| 6: | * This file is part of the Nexus MCP SDK package. |
| 7: | * |
| 8: | * (c) 2026 John Paul E. Balandan, CPA <paulbalandan@gmail.com> |
| 9: | * |
| 10: | * For the full copyright and license information, please view |
| 11: | * the LICENSE file that was distributed with this source code. |
| 12: | */ |
| 13: | |
| 14: | namespace Nexus\Mcp\Core\Transport; |
| 15: | |
| 16: | /** |
| 17: | * A transport whose peer runs as a process it owns, and which reports that the peer stopped serving |
| 18: | * without the shutdown having been requested. |
| 19: | */ |
| 20: | interface SupervisableTransportInterface extends TransportInterface |
| 21: | { |
| 22: | /** |
| 23: | * Registers a listener invoked with the peer's exit code when the transport tears down without |
| 24: | * `close()` having been called, whether the peer exited on its own or stopped serving and was |
| 25: | * killed. Calling `close()` notifies nobody. |
| 26: | * |
| 27: | * The reporting instance is spent once this fires: a supervisor respawns by building a fresh |
| 28: | * transport, not by restarting this one. The exit code is null when the peer ended without |
| 29: | * reporting a status. |
| 30: | * |
| 31: | * @param \Closure(null|int): void $listener |
| 32: | */ |
| 33: | public function onUnexpectedExit(\Closure $listener): SubscriptionInterface; |
| 34: | } |
| 35: |