【SOCKET_WSAPROTOCOL_INFO_IMPORT Quels sont les conseils pratiques lorsque vous l'utilisez en combinaison avec d'autres fonctions de réseau PHP? 】

gitbox 2025-06-19

1. Comprendre la fonction Socket_wsaprotocol_info_import

Tout d'abord, comprenez les fonctions de base de socket_wsaprotocol_info_import . Cette fonction est un outil dans PHP pour l'importation d'informations sur le protocole WSA (Windows Socket API). Sa fonction principale est de charger les informations du protocole Windows Socket dans le contexte de la prise PHP, permettant aux développeurs d'utiliser de manière flexible différents types de protocoles réseau sur les systèmes Windows.

Prototype de fonction:

 <span><span><span class="hljs-keyword">int</span></span><span> </span><span><span class="hljs-title function_ invoke__">socket_wsaprotocol_info_import</span></span><span> ( resource </span><span><span class="hljs-variable">$socket</span></span><span>, </span><span><span class="hljs-keyword">int</span></span><span> </span><span><span class="hljs-variable">$protocol_info</span></span><span> )
</span></span>

$ socket : la ressource de socket qui a été créée.
$ protocol_info : identifiant d'informations de protocole, généralement obtenu via socket_get_option et autres méthodes.

La valeur de retour de cette fonction est une valeur booléenne indiquant si l'opération est réussie.

2. Combinant socket_create et socket_bind pour obtenir un contrôle plus granulaire

Lorsque vous utilisez des sockets PHP sur les systèmes Windows, en plus d'appeler Socket_Wsaprotocol_Info_Import pour importer des informations sur le protocole, il est souvent nécessaire de créer et de lier des sockets avec des fonctions telles que Socket_Create et Socket_Bind . Ce qui suit est un scénario d'utilisation commun:

Exemple: créez une prise UDP et liez un protocole

 <span><span><span class="hljs-comment">// Créer un UDP Prises</span></span><span>
</span><span><span class="hljs-variable">$socket</span></span><span> = </span><span><span class="hljs-title function_ invoke__">socket_create</span></span><span>(AF_INET, SOCK_DGRAM, SOL_UDP);
</span><span><span class="hljs-keyword">if</span></span><span> (</span><span><span class="hljs-variable">$socket</span></span><span> === </span><span><span class="hljs-literal">false</span></span><span>) {
    </span><span><span class="hljs-keyword">echo</span></span><span> </span><span><span class="hljs-string">"创建Prises失败: "</span></span><span> . </span><span><span class="hljs-title function_ invoke__">socket_strerror</span></span><span>(</span><span><span class="hljs-title function_ invoke__">socket_last_error</span></span><span>()) . </span><span><span class="hljs-string">"\n"</span></span><span>;
    </span><span><span class="hljs-keyword">exit</span></span><span>;
}

</span><span><span class="hljs-comment">// Informations sur le protocole d&#39;importation</span></span><span>
</span><span><span class="hljs-variable">$protocol_info</span></span><span> = </span><span><span class="hljs-title function_ invoke__">socket_get_option</span></span><span>(</span><span><span class="hljs-variable">$socket</span></span><span>, SOL_SOCKET, SO_PROTOCOL_INFO);
</span><span><span class="hljs-title function_ invoke__">socket_wsaprotocol_info_import</span></span><span>(</span><span><span class="hljs-variable">$socket</span></span><span>, </span><span><span class="hljs-variable">$protocol_info</span></span><span>);

</span><span><span class="hljs-comment">// 绑定Prises</span></span><span>
</span><span><span class="hljs-variable">$bind_result</span></span><span> = </span><span><span class="hljs-title function_ invoke__">socket_bind</span></span><span>(</span><span><span class="hljs-variable">$socket</span></span><span>, </span><span><span class="hljs-string">'0.0.0.0'</span></span><span>, </span><span><span class="hljs-number">8080</span></span><span>);
</span><span><span class="hljs-keyword">if</span></span><span> (</span><span><span class="hljs-variable">$bind_result</span></span><span> === </span><span><span class="hljs-literal">false</span></span><span>) {
    </span><span><span class="hljs-keyword">echo</span></span><span> </span><span><span class="hljs-string">"La reliure a échoué: "</span></span><span> . </span><span><span class="hljs-title function_ invoke__">socket_strerror</span></span><span>(</span><span><span class="hljs-title function_ invoke__">socket_last_error</span></span><span>()) . </span><span><span class="hljs-string">"\n"</span></span><span>;
    </span><span><span class="hljs-keyword">exit</span></span><span>;
}

</span><span><span class="hljs-keyword">echo</span></span><span> </span><span><span class="hljs-string">"UDP Prises创建并绑定成功。\n"</span></span><span>;
</span></span>

Dans cet exemple, nous créons d'abord une prise UDP, puis obtenons les informations du protocole via socket_get_option et importons les informations du protocole dans le socket à l'aide de socket_wsaprotocol_info_import . Enfin, nous lions la prise à l'adresse IP et au port spécifiés.

Cette approche vous permet de contrôler plus granulé le comportement des prises dans un environnement Windows, en particulier lorsque vous devez utiliser un protocole spécifique.

3. Utilisez Socket_Select pour implémenter des E / S non bloquantes

La fonction Socket_Select de PHP vous permet de choisir entre plusieurs sockets, en évitant de bloquer les opérations. Il vous permet de gérer plusieurs demandes de connexion en même temps, ce qui est très utile lors de la mise en œuvre d'applications réseau efficaces.

Exemple: communication client-serveur non bloquante

 <span><span><span class="hljs-comment">// Créer un TCP Prises</span></span><span>
</span><span><span class="hljs-variable">$serverSocket</span></span><span> = </span><span><span class="hljs-title function_ invoke__">socket_create</span></span><span>(AF_INET, SOCK_STREAM, SOL_TCP);
</span><span><span class="hljs-keyword">if</span></span><span> (</span><span><span class="hljs-variable">$serverSocket</span></span><span> === </span><span><span class="hljs-literal">false</span></span><span>) {
    </span><span><span class="hljs-keyword">echo</span></span><span> </span><span><span class="hljs-string">"创建Prises失败: "</span></span><span> . </span><span><span class="hljs-title function_ invoke__">socket_strerror</span></span><span>(</span><span><span class="hljs-title function_ invoke__">socket_last_error</span></span><span>()) . </span><span><span class="hljs-string">"\n"</span></span><span>;
    </span><span><span class="hljs-keyword">exit</span></span><span>;
}

</span><span><span class="hljs-comment">// Informations sur le protocole d&#39;importation</span></span><span>
</span><span><span class="hljs-variable">$protocol_info</span></span><span> = </span><span><span class="hljs-title function_ invoke__">socket_get_option</span></span><span>(</span><span><span class="hljs-variable">$serverSocket</span></span><span>, SOL_SOCKET, SO_PROTOCOL_INFO);
</span><span><span class="hljs-title function_ invoke__">socket_wsaprotocol_info_import</span></span><span>(</span><span><span class="hljs-variable">$serverSocket</span></span><span>, </span><span><span class="hljs-variable">$protocol_info</span></span><span>);

</span><span><span class="hljs-comment">// Lier et écouter</span></span><span>
</span><span><span class="hljs-title function_ invoke__">socket_bind</span></span><span>(</span><span><span class="hljs-variable">$serverSocket</span></span><span>, </span><span><span class="hljs-string">'0.0.0.0'</span></span><span>, </span><span><span class="hljs-number">8081</span></span><span>);
</span><span><span class="hljs-title function_ invoke__">socket_listen</span></span><span>(</span><span><span class="hljs-variable">$serverSocket</span></span><span>);

</span><span><span class="hljs-comment">// Définir le non-bloque</span></span><span>
</span><span><span class="hljs-title function_ invoke__">socket_set_nonblock</span></span><span>(</span><span><span class="hljs-variable">$serverSocket</span></span><span>);

</span><span><span class="hljs-variable">$clients</span></span><span> = [</span><span><span class="hljs-variable">$serverSocket</span></span><span>];
</span><span><span class="hljs-keyword">while</span></span><span> (</span><span><span class="hljs-literal">true</span></span><span>) {
    </span><span><span class="hljs-variable">$read</span></span><span> = </span><span><span class="hljs-variable">$clients</span></span><span>;
    </span><span><span class="hljs-variable">$write</span></span><span> = </span><span><span class="hljs-literal">null</span></span><span>;
    </span><span><span class="hljs-variable">$except</span></span><span> = </span><span><span class="hljs-literal">null</span></span><span>;
    
    </span><span><span class="hljs-comment">// utiliser socket_select En attente non bloquante</span></span><span>
    </span><span><span class="hljs-keyword">if</span></span><span> (</span><span><span class="hljs-title function_ invoke__">socket_select</span></span><span>(</span><span><span class="hljs-variable">$read</span></span><span>, </span><span><span class="hljs-variable">$write</span></span><span>, </span><span><span class="hljs-variable">$except</span></span><span>, </span><span><span class="hljs-number">0</span></span><span>, </span><span><span class="hljs-number">10</span></span><span>) &gt; </span><span><span class="hljs-number">0</span></span><span>) {
        </span><span><span class="hljs-keyword">foreach</span></span><span> (</span><span><span class="hljs-variable">$read</span></span><span> </span><span><span class="hljs-keyword">as</span></span><span> </span><span><span class="hljs-variable">$socket</span></span><span>) {
            </span><span><span class="hljs-keyword">if</span></span><span> (</span><span><span class="hljs-variable">$socket</span></span><span> == </span><span><span class="hljs-variable">$serverSocket</span></span><span>) {
                </span><span><span class="hljs-comment">// Acceptez de nouvelles connexions</span></span><span>
                </span><span><span class="hljs-variable">$clientSocket</span></span><span> = </span><span><span class="hljs-title function_ invoke__">socket_accept</span></span><span>(</span><span><span class="hljs-variable">$serverSocket</span></span><span>);
                </span><span><span class="hljs-title function_ invoke__">socket_set_nonblock</span></span><span>(</span><span><span class="hljs-variable">$clientSocket</span></span><span>);
                </span><span><span class="hljs-variable">$clients</span></span><span>[] = </span><span><span class="hljs-variable">$clientSocket</span></span><span>;
            } </span><span><span class="hljs-keyword">else</span></span><span> {
                </span><span><span class="hljs-comment">// Lire les données du client</span></span><span>
                </span><span><span class="hljs-variable">$data</span></span><span> = </span><span><span class="hljs-title function_ invoke__">socket_read</span></span><span>(</span><span><span class="hljs-variable">$socket</span></span><span>, </span><span><span class="hljs-number">1024</span></span><span>);
                </span><span><span class="hljs-keyword">if</span></span><span> (</span><span><span class="hljs-variable">$data</span></span><span> === </span><span><span class="hljs-literal">false</span></span><span> || </span><span><span class="hljs-variable">$data</span></span><span> === </span><span><span class="hljs-string">""</span></span><span>) {
                    </span><span><span class="hljs-title function_ invoke__">socket_close</span></span><span>(</span><span><span class="hljs-variable">$socket</span></span><span>);
                    </span><span><span class="hljs-keyword">unset</span></span><span>(</span><span><span class="hljs-variable">$clients</span></span><span>[</span><span><span class="hljs-title function_ invoke__">array_search</span></span><span>(</span><span><span class="hljs-variable">$socket</span></span><span>, </span><span><span class="hljs-variable">$clients</span></span><span>)]);
                } </span><span><span class="hljs-keyword">else</span></span><span> {
                    </span><span><span class="hljs-keyword">echo</span></span><span> </span><span><span class="hljs-string">"Données du client reçu: "</span></span><span> . </span><span><span class="hljs-variable">$data</span></span><span> . </span><span><span class="hljs-string">"\n"</span></span><span>;
                    </span><span><span class="hljs-title function_ invoke__">socket_write</span></span><span>(</span><span><span class="hljs-variable">$socket</span></span><span>, </span><span><span class="hljs-string">"recevoir: "</span></span><span> . </span><span><span class="hljs-variable">$data</span></span><span>);
                }
            }
        }
    }
}
</span></span>

Dans cet exemple, le serveur crée un socket TCP et le définit en mode non bloquant, en utilisant socket_select pour implémenter les opérations d'E / S non bloquantes. Combiné avec socket_wsaprotocol_info_import , vous pouvez utiliser de manière flexible des protocoles spécifiques pour optimiser le comportement du socket.

4. coopérer avec socket_recv et socket_send pour obtenir une transmission de données efficace

Grâce aux fonctions Socket_Recv et Socket_Send , une transmission efficace des données du réseau peut être effectuée. Lorsqu'il est utilisé avec socket_wsaprotocol_info_import , vous pouvez ajuster le comportement du socket en fonction des exigences du protocole pour garantir que la transmission des données est plus stable.

Exemple: optimiser la transmission des données à l'aide d'informations sur le protocole

 <span><span><span class="hljs-variable">$socket</span></span><span> = </span><span><span class="hljs-title function_ invoke__">socket_create</span></span><span>(AF_INET, SOCK_STREAM, SOL_TCP);
</span><span><span class="hljs-keyword">if</span></span><span> (</span><span><span class="hljs-variable">$socket</span></span><span> === </span><span><span class="hljs-literal">false</span></span><span>) {
    </span><span><span class="hljs-keyword">echo</span></span><span> </span><span><span class="hljs-string">"创建Prises失败: "</span></span><span> . </span><span><span class="hljs-title function_ invoke__">socket_strerror</span></span><span>(</span><span><span class="hljs-title function_ invoke__">socket_last_error</span></span><span>()) . </span><span><span class="hljs-string">"\n"</span></span><span>;
    </span><span><span class="hljs-keyword">exit</span></span><span>;
}

</span><span><span class="hljs-comment">// Informations sur le protocole d&#39;importation</span></span><span>
</span><span><span class="hljs-variable">$protocol_info</span></span><span> = </span><span><span class="hljs-title function_ invoke__">socket_get_option</span></span><span>(</span><span><span class="hljs-variable">$socket</span></span><span>, SOL_SOCKET, SO_PROTOCOL_INFO);
</span><span><span class="hljs-title function_ invoke__">socket_wsaprotocol_info_import</span></span><span>(</span><span><span class="hljs-variable">$socket</span></span><span>, </span><span><span class="hljs-variable">$protocol_info</span></span><span>);

</span><span><span class="hljs-comment">// Connectez-vous au serveur</span></span><span>
</span><span><span class="hljs-keyword">if</span></span><span> (</span><span><span class="hljs-title function_ invoke__">socket_connect</span></span><span>(</span><span><span class="hljs-variable">$socket</span></span><span>, </span><span><span class="hljs-string">'127.0.0.1'</span></span><span>, </span><span><span class="hljs-number">8080</span></span><span>) === </span><span><span class="hljs-literal">false</span></span><span>) {
    </span><span><span class="hljs-keyword">echo</span></span><span> </span><span><span class="hljs-string">"Échec de la connexion: "</span></span><span> . </span><span><span class="hljs-title function_ invoke__">socket_strerror</span></span><span>(</span><span><span class="hljs-title function_ invoke__">socket_last_error</span></span><span>()) . </span><span><span class="hljs-string">"\n"</span></span><span>;
    </span><span><span class="hljs-keyword">exit</span></span><span>;
}

</span><span><span class="hljs-comment">// Envoyer des données</span></span><span>
</span><span><span class="hljs-variable">$message</span></span><span> = </span><span><span class="hljs-string">"Hello, Server!"</span></span><span>;
</span><span><span class="hljs-title function_ invoke__">socket_send</span></span><span>(</span><span><span class="hljs-variable">$socket</span></span><span>, </span><span><span class="hljs-variable">$message</span></span><span>, </span><span><span class="hljs-title function_ invoke__">strlen</span></span><span>(</span><span><span class="hljs-variable">$message</span></span><span>), </span><span><span class="hljs-number">0</span></span><span>);

</span><span><span class="hljs-comment">// Recevoir des données</span></span><span>
</span><span><span class="hljs-variable">$buffer</span></span><span> = </span><span><span class="hljs-string">''</span></span><span>;
</span><span><span class="hljs-title function_ invoke__">socket_recv</span></span><span>(</span><span><span class="hljs-variable">$socket</span></span><span>, </span><span><span class="hljs-variable">$buffer</span></span><span>, </span><span><span class="hljs-number">2048</span></span><span>, </span><span><span class="hljs-number">0</span></span><span>);
</span><span><span class="hljs-keyword">echo</span></span><span> </span><span><span class="hljs-string">"recevoir数据: "</span></span><span> . </span><span><span class="hljs-variable">$buffer</span></span><span> . </span><span><span class="hljs-string">"\n"</span></span><span>;

</span><span><span class="hljs-title function_ invoke__">socket_close</span></span><span>(</span><span><span class="hljs-variable">$socket</span></span><span>);
</span></span>

Dans cet exemple, nous envoyons des données via socket_send et recevons des données de réponse via socket_recv . En combinaison avec socket_wsaprotocol_info_import , les informations du protocole de socket peuvent être optimisées en fonction des besoins de différents protocoles, améliorant ainsi l'efficacité et la fiabilité de la communication.

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