AsyncTcpConnection 如何通过指定ip代理

    $context_option = [
        'proxy' => [
            'type' => 2,  // HTTP 代理
            'host' => '127.0.0.1',
            'port' => 7890,
            'request_fulluri' => true,
        ],
        'socket' => [
            'bindto' => '0:0',  // 动态绑定（之前移除以避冲突）
        ],
    ];
    $this->connection = new AsyncTcpConnection($this->server_address,$context_option);