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?>
<div id="sockets.examples" class="chapter">
 <h1 class="title">Örnekler</h1>

 <p class="para">
  <div class="example" id="example-1">
   <p><strong>Örnek 1 - Soket örneği: Basit bir TCP/IP sunucu</strong></p>
   <div class="example-contents"><p>
    Bu örnekte basit bir raporlama sunucusu gösterilmiştir.
    <var class="varname">adres</var> ve <var class="varname">port</var> değişkenleri
    ayarlarınıza uygun olarak değiştirilip işleme sokulur. Sunucuya şöyle
    bir komutla bağlanabilirsiniz: <strong class="command">telnet 192.168.1.53
    10000</strong> (buradaki adres ve port ayarlarınıza göre belirlenir).
    Yazdığınız herşey sunucu tarafında çıktılanır ve tekrar size gösterilir,
    Çıkmak için &#039;quit&#039; girilir.
   </p></div>
   <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">#!/usr/local/bin/php -q<br /><span style="color: #0000BB">&lt;?php<br />error_reporting</span><span style="color: #007700">(</span><span style="color: #0000BB">E_ALL</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* Betik sürekli bağlantı beklesin. */<br /></span><span style="color: #0000BB">set_time_limit</span><span style="color: #007700">(</span><span style="color: #0000BB">0</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* Örtük çıktılama etkin olsun, böylece ne yaptğımızı görürüz. */<br /></span><span style="color: #0000BB">ob_implicit_flush</span><span style="color: #007700">();<br /><br /></span><span style="color: #0000BB">$adres </span><span style="color: #007700">= </span><span style="color: #DD0000">'192.168.1.53'</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$port </span><span style="color: #007700">= </span><span style="color: #0000BB">10000</span><span style="color: #007700">;<br /><br />if ((</span><span style="color: #0000BB">$sock </span><span style="color: #007700">= </span><span style="color: #0000BB">socket_create</span><span style="color: #007700">(</span><span style="color: #0000BB">AF_INET</span><span style="color: #007700">, </span><span style="color: #0000BB">SOCK_STREAM</span><span style="color: #007700">, </span><span style="color: #0000BB">SOL_TCP</span><span style="color: #007700">)) === </span><span style="color: #0000BB">false</span><span style="color: #007700">) {<br />    echo </span><span style="color: #DD0000">"socket_create()  başarısız oldu: sebep: " </span><span style="color: #007700">.<br />          </span><span style="color: #0000BB">socket_strerror</span><span style="color: #007700">(</span><span style="color: #0000BB">socket_last_error</span><span style="color: #007700">()) . </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br />}<br /><br />if (</span><span style="color: #0000BB">socket_bind</span><span style="color: #007700">(</span><span style="color: #0000BB">$sock</span><span style="color: #007700">, </span><span style="color: #0000BB">$adres</span><span style="color: #007700">, </span><span style="color: #0000BB">$port</span><span style="color: #007700">) === </span><span style="color: #0000BB">false</span><span style="color: #007700">) {<br />    echo </span><span style="color: #DD0000">"socket_bind()  başarısız oldu: sebep: " </span><span style="color: #007700">.<br />          </span><span style="color: #0000BB">socket_strerror</span><span style="color: #007700">(</span><span style="color: #0000BB">socket_last_error</span><span style="color: #007700">(</span><span style="color: #0000BB">$sock</span><span style="color: #007700">)) . </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br />}<br /><br />if (</span><span style="color: #0000BB">socket_listen</span><span style="color: #007700">(</span><span style="color: #0000BB">$sock</span><span style="color: #007700">, </span><span style="color: #0000BB">5</span><span style="color: #007700">) === </span><span style="color: #0000BB">false</span><span style="color: #007700">) {<br />    echo </span><span style="color: #DD0000">"socket_listen()  başarısız oldu: sebep: " </span><span style="color: #007700">.<br />          </span><span style="color: #0000BB">socket_strerror</span><span style="color: #007700">(</span><span style="color: #0000BB">socket_last_error</span><span style="color: #007700">(</span><span style="color: #0000BB">$sock</span><span style="color: #007700">)) . </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br />}<br /><br />do {<br />    if ((</span><span style="color: #0000BB">$msgsock </span><span style="color: #007700">= </span><span style="color: #0000BB">socket_accept</span><span style="color: #007700">(</span><span style="color: #0000BB">$sock</span><span style="color: #007700">)) === </span><span style="color: #0000BB">false</span><span style="color: #007700">) {<br />        echo </span><span style="color: #DD0000">"socket_accept()  başarısız oldu: sebep: " </span><span style="color: #007700">.<br />              </span><span style="color: #0000BB">socket_strerror</span><span style="color: #007700">(</span><span style="color: #0000BB">socket_last_error</span><span style="color: #007700">(</span><span style="color: #0000BB">$sock</span><span style="color: #007700">)) . </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br />        break;<br />    }<br />    </span><span style="color: #FF8000">/* Komutları gönder. */<br />    </span><span style="color: #0000BB">$msg </span><span style="color: #007700">= </span><span style="color: #DD0000">"\nPHP Deneme Sunucusuna Hoş Geldiniz.\n" </span><span style="color: #007700">.<br />        </span><span style="color: #DD0000">"Çıkmak için 'quit', sunucuyu kapatmak için " </span><span style="color: #007700">.<br />        </span><span style="color: #DD0000">"'shutdown' yazıp enter tuşuna basınız.\n"</span><span style="color: #007700">;<br />    </span><span style="color: #0000BB">socket_write</span><span style="color: #007700">(</span><span style="color: #0000BB">$msgsock</span><span style="color: #007700">, </span><span style="color: #0000BB">$msg</span><span style="color: #007700">, </span><span style="color: #0000BB">strlen</span><span style="color: #007700">(</span><span style="color: #0000BB">$msg</span><span style="color: #007700">));<br /><br />    do {<br />        if (</span><span style="color: #0000BB">false </span><span style="color: #007700">=== (</span><span style="color: #0000BB">$buf </span><span style="color: #007700">= </span><span style="color: #0000BB">socket_read</span><span style="color: #007700">(</span><span style="color: #0000BB">$msgsock</span><span style="color: #007700">, </span><span style="color: #0000BB">2048</span><span style="color: #007700">, </span><span style="color: #0000BB">PHP_NORMAL_READ</span><span style="color: #007700">)))<br />        {<br />            echo </span><span style="color: #DD0000">"socket_read() başarısız oldu: sebep: " </span><span style="color: #007700">.<br />                  </span><span style="color: #0000BB">socket_strerror</span><span style="color: #007700">(</span><span style="color: #0000BB">socket_last_error</span><span style="color: #007700">(</span><span style="color: #0000BB">$msgsock</span><span style="color: #007700">)) . </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br />            break </span><span style="color: #0000BB">2</span><span style="color: #007700">;<br />        }<br />        if (!</span><span style="color: #0000BB">$buf </span><span style="color: #007700">= </span><span style="color: #0000BB">trim</span><span style="color: #007700">(</span><span style="color: #0000BB">$buf</span><span style="color: #007700">)) {<br />            continue;<br />        }<br />        if (</span><span style="color: #0000BB">$buf </span><span style="color: #007700">== </span><span style="color: #DD0000">'quit'</span><span style="color: #007700">) {<br />            break;<br />        }<br />        if (</span><span style="color: #0000BB">$buf </span><span style="color: #007700">== </span><span style="color: #DD0000">'shutdown'</span><span style="color: #007700">) {<br />            </span><span style="color: #0000BB">socket_close</span><span style="color: #007700">(</span><span style="color: #0000BB">$msgsock</span><span style="color: #007700">);<br />            break </span><span style="color: #0000BB">2</span><span style="color: #007700">;<br />        }<br />        </span><span style="color: #0000BB">$talkback </span><span style="color: #007700">= </span><span style="color: #DD0000">"Şunları yazdınız:'</span><span style="color: #0000BB">$buf</span><span style="color: #DD0000">'.\n"</span><span style="color: #007700">;<br />        </span><span style="color: #0000BB">socket_write</span><span style="color: #007700">(</span><span style="color: #0000BB">$msgsock</span><span style="color: #007700">, </span><span style="color: #0000BB">$talkback</span><span style="color: #007700">, </span><span style="color: #0000BB">strlen</span><span style="color: #007700">(</span><span style="color: #0000BB">$talkback</span><span style="color: #007700">));<br />        echo </span><span style="color: #DD0000">"</span><span style="color: #0000BB">$buf</span><span style="color: #DD0000">\n"</span><span style="color: #007700">;<br />    } while (</span><span style="color: #0000BB">true</span><span style="color: #007700">);<br />    </span><span style="color: #0000BB">socket_close</span><span style="color: #007700">(</span><span style="color: #0000BB">$msgsock</span><span style="color: #007700">);<br />} while (</span><span style="color: #0000BB">true</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">socket_close</span><span style="color: #007700">(</span><span style="color: #0000BB">$sock</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?&gt;</span></span></code></div>
   </div>

  </div>
 </p>
 <p class="para">
  <div class="example" id="example-2">
   <p><strong>Örnek 2 - Soket örneği: Basit TCP/IP istemci</strong></p>
   <div class="example-contents"><p>
    Örnekte tek atımlık basit bir HTTP istemcisi gösterilmiştir. Bir sayfaya
    bağlanır, bir HEAD isteği yapar, yanıtı gösterir ve çıkar.
   </p></div>
   <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB">&lt;?php<br />error_reporting</span><span style="color: #007700">(</span><span style="color: #0000BB">E_ALL</span><span style="color: #007700">);<br /><br />echo </span><span style="color: #DD0000">"&lt;h2&gt;TCP/IP bağlantısı&lt;/h2&gt;\n"</span><span style="color: #007700">;<br /><br /></span><span style="color: #FF8000">/* WWW hizmeti için port isteyelim. */<br /></span><span style="color: #0000BB">$service_port </span><span style="color: #007700">= </span><span style="color: #0000BB">getservbyname</span><span style="color: #007700">(</span><span style="color: #DD0000">'www'</span><span style="color: #007700">, </span><span style="color: #DD0000">'tcp'</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* Hedef konağın IP adresini alalım. */<br /></span><span style="color: #0000BB">$adres </span><span style="color: #007700">= </span><span style="color: #0000BB">gethostbyname</span><span style="color: #007700">(</span><span style="color: #DD0000">'www.example.com'</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* Bir TCP/IP soketi oluşturalım. */<br /></span><span style="color: #0000BB">$socket </span><span style="color: #007700">= </span><span style="color: #0000BB">socket_create</span><span style="color: #007700">(</span><span style="color: #0000BB">AF_INET</span><span style="color: #007700">, </span><span style="color: #0000BB">SOCK_STREAM</span><span style="color: #007700">, </span><span style="color: #0000BB">SOL_TCP</span><span style="color: #007700">);<br />if (</span><span style="color: #0000BB">$socket </span><span style="color: #007700">=== </span><span style="color: #0000BB">false</span><span style="color: #007700">) {<br />    echo </span><span style="color: #DD0000">"socket_create() başarısız oldu: sebep: " </span><span style="color: #007700">.<br />          </span><span style="color: #0000BB">socket_strerror</span><span style="color: #007700">(</span><span style="color: #0000BB">socket_last_error</span><span style="color: #007700">()) . </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br />} else {<br />    echo </span><span style="color: #DD0000">"Tamam.\n"</span><span style="color: #007700">;<br />}<br /><br />echo </span><span style="color: #DD0000">"'</span><span style="color: #0000BB">$adres</span><span style="color: #DD0000">' adresine '</span><span style="color: #0000BB">$service_port</span><span style="color: #DD0000">' üzerinden bağlanmaya çalışılıyor..."</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$result </span><span style="color: #007700">= </span><span style="color: #0000BB">socket_connect</span><span style="color: #007700">(</span><span style="color: #0000BB">$socket</span><span style="color: #007700">, </span><span style="color: #0000BB">$adres</span><span style="color: #007700">, </span><span style="color: #0000BB">$service_port</span><span style="color: #007700">);<br />if (</span><span style="color: #0000BB">$result </span><span style="color: #007700">=== </span><span style="color: #0000BB">false</span><span style="color: #007700">) {<br />    echo </span><span style="color: #DD0000">"socket_connect() başarısız oldu.\nSebep: (</span><span style="color: #0000BB">$result</span><span style="color: #DD0000">) " </span><span style="color: #007700">.<br />          </span><span style="color: #0000BB">socket_strerror</span><span style="color: #007700">(</span><span style="color: #0000BB">socket_last_error</span><span style="color: #007700">(</span><span style="color: #0000BB">$socket</span><span style="color: #007700">)) . </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br />} else {<br />    echo </span><span style="color: #DD0000">"Tamam.\n"</span><span style="color: #007700">;<br />}<br /><br /></span><span style="color: #0000BB">$in </span><span style="color: #007700">= </span><span style="color: #DD0000">"HEAD / HTTP/1.1\r\n"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$in </span><span style="color: #007700">.= </span><span style="color: #DD0000">"Host: www.example.com\r\n"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$in </span><span style="color: #007700">.= </span><span style="color: #DD0000">"Connection: Close\r\n\r\n"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$out </span><span style="color: #007700">= </span><span style="color: #DD0000">''</span><span style="color: #007700">;<br /><br />echo </span><span style="color: #DD0000">"HTTP HEAD isteği gönderiliyor..."</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">socket_write</span><span style="color: #007700">(</span><span style="color: #0000BB">$socket</span><span style="color: #007700">, </span><span style="color: #0000BB">$in</span><span style="color: #007700">, </span><span style="color: #0000BB">strlen</span><span style="color: #007700">(</span><span style="color: #0000BB">$in</span><span style="color: #007700">));<br />echo </span><span style="color: #DD0000">"Tamam.\n"</span><span style="color: #007700">;<br /><br />echo </span><span style="color: #DD0000">"Alınan yanıt:\n\n"</span><span style="color: #007700">;<br />while (</span><span style="color: #0000BB">$out </span><span style="color: #007700">= </span><span style="color: #0000BB">socket_read</span><span style="color: #007700">(</span><span style="color: #0000BB">$socket</span><span style="color: #007700">, </span><span style="color: #0000BB">2048</span><span style="color: #007700">)) {<br />    echo </span><span style="color: #0000BB">$out</span><span style="color: #007700">;<br />}<br /><br />echo </span><span style="color: #DD0000">"Soket kapatılıyor..."</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">socket_close</span><span style="color: #007700">(</span><span style="color: #0000BB">$socket</span><span style="color: #007700">);<br />echo </span><span style="color: #DD0000">"Tamam.\n\n"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">?&gt;</span></span></code></div>
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