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Comment utiliser socket_set_option pour définir le nombre de retransmissions de sockets pour optimiser la stabilité du réseau?

gitbox 2025-08-17 
<span><span><span class="hljs-meta">&lt;?php</span></span><span>
</span><span><span class="hljs-comment">// Partie du contenu avant le début de l&#39;article</span></span><span>
</span><span><span class="hljs-comment">// Code ou commentaires qui ne sont pas liés au sujet de l&#39;article</span></span><span>
</span><span><span class="hljs-meta">?&gt;</span></span><span>
----------------------------------------------
</span><span><span class="hljs-meta">&lt;?php</span></span><span>
</span><span><span class="hljs-comment">// L&#39;article commence</span></span><span>

<span class="hljs-comment">/**
 * Comment utiliser socket_set_option installation socket Le nombre de retransmissions pour optimiser la stabilité du réseau
 *
 * Dans la programmation réseau，socket C&#39;est un mécanisme de communication très courant，Il permet à différents processus ou appareils d&#39;échanger des données sur le réseau。Utilisé socket Lors de la communication du réseau，La stabilité de la transmission est une considération importante，En particulier dans les environnements de réseau de latence instables ou élevés。Afin d&#39;améliorer la fiabilité de la communication réseau，我们可以通过installation socket Le nombre de retransmissions pour optimiser la stabilité du réseau。
 *
 * 本文将介绍Comment utiliser PHP Interne `socket_set_option` 函数installation socket Nombre de retransmissions，Pour améliorer la stabilité des connexions réseau。
 */</span>

 </span><span><span class="hljs-comment">// Créer un TCP socket</span></span><span>
</span><span><span class="hljs-variable">$socket</span></span><span> = </span><span><span class="hljs-title function_ invoke__">socket_create</span></span><span>(AF_INET, SOCK_STREAM, SOL_TCP);
</span><span><span class="hljs-keyword">if</span></span><span> (!</span><span><span class="hljs-variable">$socket</span></span><span>) {
    </span><span><span class="hljs-keyword">echo</span></span><span> </span><span><span class="hljs-string">"créer socket échouer: "</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">// Connectez-vous à l&#39;adresse de destination et au port</span></span><span>
</span><span><span class="hljs-variable">$address</span></span><span> = </span><span><span class="hljs-string">'127.0.0.1'</span></span><span>;
</span><span><span class="hljs-variable">$port</span></span><span> = </span><span><span class="hljs-number">12345</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">$socket</span></span><span>, </span><span><span class="hljs-variable">$address</span></span><span>, </span><span><span class="hljs-variable">$port</span></span><span>)) {
    </span><span><span class="hljs-keyword">echo</span></span><span> </span><span><span class="hljs-string">"连接échouer: "</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">// installation socket Options</span></span><span>
</span><span><span class="hljs-comment">// 这里我们installation SO_RCVBUF et SO_RCVBUF 重传次数相关的Options</span></span><span>
</span><span><span class="hljs-variable">$transmit_retries</span></span><span> = </span><span><span class="hljs-number">5</span></span><span>; </span><span><span class="hljs-comment">// installation重传次数为 5</span></span><span>

</span><span><span class="hljs-keyword">if</span></span><span> (!</span><span><span class="hljs-title function_ invoke__">socket_set_option</span></span><span>(</span><span><span class="hljs-variable">$socket</span></span><span>, SOL_SOCKET, SO_RCVBUF, </span><span><span class="hljs-number">65536</span></span><span>)) {
    </span><span><span class="hljs-keyword">echo</span></span><span> </span><span><span class="hljs-string">"installation接收缓冲区échouer: "</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">if</span></span><span> (!</span><span><span class="hljs-title function_ invoke__">socket_set_option</span></span><span>(</span><span><span class="hljs-variable">$socket</span></span><span>, SOL_SOCKET, SO_RCVBUF, </span><span><span class="hljs-variable">$transmit_retries</span></span><span>)) {
    </span><span><span class="hljs-keyword">echo</span></span><span> </span><span><span class="hljs-string">"installation重传次数échouer: "</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">$message</span></span><span> = </span><span><span class="hljs-string">"Hello, this is a test message!"</span></span><span>;
</span><span><span class="hljs-title function_ invoke__">socket_write</span></span><span>(</span><span><span class="hljs-variable">$socket</span></span><span>, </span><span><span class="hljs-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-comment">// fermeture socket</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-comment">// Fin du texte principal de l&#39;article</span></span><span>
</span><span><span class="hljs-meta">?&gt;</span></span><span>
----------------------------------------------
</span><span><span class="hljs-meta">&lt;?php</span></span><span>
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