摘要：服務端可自定義方法供客戶端遠程調用服務端遠程調用函數參數順序數量變化不會導致客戶端服務端版本不兼容問題支持多種傳輸協議支持多種通訊方式阻塞非阻塞阻塞非阻塞等支持自定義傳輸協議引入接口高冷一定要高冷設計一定要高冷傳輸相關服務端非阻塞通訊端口

服務端可自定義方法供客戶端遠程調用

服務端遠程調用函數參數(順序,數量)變化, 不會導致客戶端服務端版本不兼容問題

支持多種傳輸協議 (protocolbuffer, msgpack, json, serialize)

支持多種通訊方式 (阻塞, 非阻塞, SSL阻塞, SSL非阻塞等)

支持自定義傳輸協議 (引入RpcProtocolInterface接口)

高冷, 一定要高冷, API設計一定要高冷

/**
 * 傳輸相關
 */
// 服務端非阻塞socket
class rpc_transport_server_socket
{
    protected $_port; //通訊端口
    final public function __construct(int $port){
        $this->_port = $port;
    }
}
// 客戶端阻塞socket
class rpc_transport_client_socket
{
    protected $_host; //通訊地址
    protected $_port; //通訊端口
    final public function __construct(string $host, int $port) {
        $this->_host = $host;
        $this->_port = $port;
    }
}
// 客戶端非阻塞socket
class rpc_transport_async_client_socket extends rpc_transport_client_socket
{
    // do something
}
// 傳輸層抽象類
abstract class rpc_transport
{
    protected $_timeout; //傳輸超時, 支持浮點數, 單位:sec
    protected $_socket; //傳輸句柄
    abstract public function on(string $event, mixed $callback);
}
// 服務端傳輸
class rpc_transport_server extends rpc_transport
{
    final public function __construct(rpc_transport_server_socket $socket, float $timeout){
        $this->_socket = $socket;
        $this->_timeout = $timeout;
    }
    public static function factory(int $port, float $timeout){
        $this->_socket = new rpc_transport_server_socket($port);
        $this->_timeout = $timeout;
    }
    public function on(string $event, mixed $callback){
        SERVER->on(string $event, mixed $callback);
    }
}
// 客戶端傳輸
class rpc_transport_client extends rpc_transport
{
    final public function __construct(rpc_transport_client_socket $socket, float $timeout){
        $this->_socket = $socket;
        $this->_timeout = $timeout;
    }
    public static function factory(string $host, int $port, float $timeout){
        $this->_socket = new rpc_transport_client_socket($host, $port);
        $this->_timeout = $timeout;
    }
}
// 客戶端傳輸
class rpc_transport_async_client extends rpc_transport
{
    final public function __construct(rpc_transport_async_client_socket $socket, float $timeout){
        $this->_socket = $socket;
        $this->_timeout = $timeout;
    }
    public static function factory(string $host, int $port, float $timeout){
        $this->_socket = new rpc_transport_async_client_socket($host, $port);
        $this->_timeout = $timeout;
    }
    public function on(string $event, mixed $callback){
        CLIENT->on(string $event, mixed $callback);
    }
}
/**
 *  協議相關
 */
//傳輸協議工廠類
class rpc_protocol
{
    protected $_transport = null; //傳輸
    protected $_protocol = null; //協議(protocolbuffer, msgpack, json, serialize)
    private function __construct($protocol, rpc_transport $transport = NULL){
        return self::factory($protocol, $transport);
    }
    public static function factory($protocol, rpc_transport $transport = NULL){
        if(!isset($transport)) {
            $this->_transport = $transport;
        }
        if(class_exists("rpc_protocol_" . $protocol)) {
            $this->_protocol = new "rpc_protocol_" . $protocol;
        }
        return $this;
    }
    public function getTransport(){
        return $this->_transport;
    }
    public function setTransport($transport){
        $this->_transport = $transport;
    }
    public function getProtocol(){
        return $this->_protocol;
    }
    public function setProtocol($protocol){
        $this->_protocol = $protocol;
    }
    public function pack($message) {
        return $this->_protocol->pack($message);
    }
    public function unpack($message){
        return $this->_protocol->unpack($message);
    }
}
//傳輸協議接口
interface rpc_protocol_interface
{
    public function pack($message);
    public function unpack($message);
}
//JSON傳輸協議(打個樣)
class rpc_protocol_json implements rpc_protocol_interface
{
    public function pack($message){
        ...
    }
    public function unpack($message){
        ...
    }
}
...
/**
 * 服務端
 */
// 服務端抽象類
abstract class rpc_server_service
{
    public function __call(){
        // do something
    }
}
// 服務端
class rpc_server
{
    final public function __construct(rpc_server_interface $server_interface, rpc_protocol $protocol);
}
/**
 * 客戶端
 */
// 客戶端
class rpc_client
{
    private $_protocol = null;
    public function __call(string $method, array $parameters){
        // call $server_interface
    }
    final public function __construct(rpc_protocol $protocol){
        $this->_protocol = $protocol;
    }
}    
//客戶端回調函數抽象類
abstract class rpc_async_client_callback
{
    private $_response = null;
    public function getResult() { 
        // 返回結果值
        return $this->_response; 
    } 
    public function onComplete($response){
        $this->_response = $response;
    }
    public function onError($error){
        throw new Exception($error);
    }
}
// 非阻塞客戶端
class rpc_async_client
{
    private $_protocol = null;
    private $_callback = null;
    public function __call(string $method, array $parameters){
        $callback = array_pop($parameters);
        $response = $this->_protocol->getTransport()->receive();
        $this->_protocol->getTransport()->on("complete", $callback->onComplete($response));
        $this->_protocol->getTransport()->on("error", $callback->onError($error));
    }
    final public function __construct(rpc_protocol $protocol){
        $this->_protocol = $protocol;
    }
}

// server
class server_hello extends rpc_server_service {
    public function hello($message) {
        echo $message;
    }
}
$service = server_hello();
$server_transport = new rpc_transport_server(8080, 0.1);
$server_transport->on("connect", function(){
    echo "Server:Connect.
";
});
$server_protocol = new rpc_protocol::factory("json", $server_transport);
$server = new rpc_server($server_protocol, $service);

$server->serve();

// client
$client_transport = new rpc_transport_client("127.0.0.1", 8080, 0.1);
$client_transport->on("connect", function(){
    echo "Client:Connect.
";
});
$client_protocol = new rpc_protocol::factory("json", $client_transport);
$client = new rpc_client($client_protocol);

$client_transport->open();
$client->hello("world");
$client_transport->close();