<h1 align="center"><b>Robozilla</b>Codis d'error del Robozilla</h1>
       
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          <td width="31%" height="357"> 
            <div align="center"><b><a href="#connection">Errors de connexi</a></b></div>
            <ul>
              <li><a href="#-0">-<b>0 - Error desconegut</b></a></li>
              <li><b><a href="#-1">-1 - No es pot trobar l'ordinador central</a></b></li>
              <li><b><a href="#-4">-4 - No es pot connectar</a></b></li>
              <li><a href="#-5"><b>-5 - Temps excedit</b></a></li>
              <li><b><a href="#-6">-6 - URL errnia</a></b></li>
              <li><a href="#-7"><b>-7 - Error en el servidor</b></a></li>
            </ul>
            <div align="center"><b><a href="#redirection">300: Redirecci</a></b> 
            </div>
            <ul>
              <li><b><a href="#303">303 Mira una altra</a></b></li>
              <li><b><a href="#302">302</a></b></li>
              <li><b><a href="#301">301</a></b></li>
              <li><b><a href="#300">300</a></b></li>
            </ul>
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          </td>
          <td width="37%" height="357"> 
            <div align="center"><b><a href="#client">400: Errors al client</a></b> 
            </div>
            <ul>
              <li><a href="#417"><b>417 Error en la espera</b></a></li>
              <li><b><a href="#416">416 Petici de rang no s satisfactori</a></b></li>
              <li><b><a href="#415">415 Tipus d'arxiu multimdia no implementat</a></b></li>
              <li><b><a href="#414">414 Petici d'URI massa gran</a></b></li>
              <li><b><a href="#413">413 Petuici d'entitat massa gran</a></b></li>
              <li><b><a href="#412">412 Precondici errnia</a></b></li>
              <li><b><a href="#411">411 Es necessita el tamany</a></b></li>
              <li><b><a href="#410">410 Escapat</a></b></li>
              <li><b><a href="#409">409 Conflicte</a></b></li>
              <li><b><a href="#408">408 Temps excedit per a la sollicitud</a></b></li>
              <li><b><a href="#407">407 s necessria l'autenticaci al servidor intermediari</a></b></li>
              <li><b><a href="#406">406 No aceptable</a></b></li>
              <li><b><a href="#405">405 Mtode no perms</a></b></li>
              <li><b><a href="#404">404 No trobat</a></b></li>
              <li><b><a href="#403">403 Prohibit</a></b></li>
              <li><b><a href="#402">402 Pagament necessari</a></b></li>
              <li><b><a href="#401">401 No autoritzat</a></b></li>
              <li><b><a href="#400">400 Petici errnia</a></b></li>
            </ul>
          </td>
          <td width="32%" height="357"> 
            <div align="center"><b><a href="#server">500: Errors al servidor</a></b> 
            </div>
            <ul>
              <li><b><a href="#505">505 Versi d'HTTP no implementada</a></b></li>
              <li><b><a href="#504">504 Temps excedit en la passarella</a></b></li>
              <li><b><a href="#503">503 Servidor sobrecarregat</a></b></li>
              <li><b><a href="#502">502 Passarella errnia</a></b></li>
              <li><b><a href="#501">501 No implementat</a></b> </li>
              <li><b><a href="#500">500 Error en el servidor</a></b></li>
            </ul>
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      </table>
      
      <p align="center">La llista de codis d'error s retornada pel <a href="./index.html">Robozilla</a>, el comprovador automatitzat d'enllaos.</p>
      <h3><b><a name="connection">Errors de connexi</a></b></h3>
      <ul>
        <li>
          <b><a name="-0">-0 - Error desconegut</a></b>
          <br>Els errors d'aquest tipus normalment sn errors de DNS. Aix vol dir que un nslookup del lloc web ha donat com a resposta 'zero'; el domini del lloc pot no ser trobat. Com que el Robozilla comprova cada lloc web dos cops abans de marcar-lo com a Vermell, un lloc aix s difcil de recuperar. s recomanable de cercar les paraules clau del ttol del lloc web i la URL en un cercador, per intentar de trobar una nova URL per al lloc web.
        </li>
        <li><a name="-1"><b>-1 - Unable to Resolve Host</a></b><br>
          Common causes include a typo in the host name, and non-payment of domain 
          name charges. Firstly, check to see if there are any obvious typos in 
          the host name. If so, fix them, and then try the URL again. You may 
          wish to do a whois query on the domain name. Using a service such as 
          allwhois.com, query the name in question and check when the name was 
          due for re-registration. </li>
        <li><b><a name="-4"></a>-4 - Can't connect </b><br>
          The server exists, but it is not allowing connections on the HTTP port. 
          This generally suggests the server is wrongly configured, and as such 
          the best recourse is normally to unreview the URL and check back later. 
        </li>
        <li><a name="-5"></a><b>-5 - Timeout</b><br>
          Robozilla connected OK, and sent the request but timed out waiting to 
          fetch the page. This happens sometimes on really busy servers. If this 
          error is still present when you come to check the URL it suggests the 
          site may be down for a long period of time. </li>
        <li><b><a name="-6"></a>-6 - Bad URL<br>
          </b>There was a problem with the format of the URL. Perhaps http:// 
          is missing? Note: when you click on the [edit] link for a URL missing 
          http://, the edit page for the site comes up with http:// helpfully 
          attached by the dmoz software, and the URL link therefore works. You 
          still have to click Update (not "This URL works for me") in order for 
          the update to take effect. Else, check for other examples of incorrect 
          syntax. For instance: <br>
          htttp://www.example.com/<br>
          htp://www.example.com/<br>
          http:://www.example.com/ <br>
          http://w.example.com/ </li>
        <li><b><a name="-7"></a>-7 - Server error</b><br>
          The server returned an unknown error code, and is probably misconfigured. 
          The page may still show up okay, but it's a good idea to check it just 
          in case. </li>
      </ul>

      <center>
        <div align="left">
          <h3><b><a name="redirection">300: Redirecci</a></b></h3>
        </div>
      </center>
      <ul>
        <li>
          <center>
            <div align="left">
              <b><a name="303">303 See Other</a></b>
              <br>The page has a new URL. Update the listing to the new URL.
            </div>
          </center>
        </li>
        <li>
          <center>
            <div align="left">
              <b><a name="302">302</a></b>
              <br>Redirect Temporarily The page has a new URL temporarily (in theory; in practice, this is often used as a synonym for code 301). Update the listing to the new URL.
            </div>
          </center>
        </li>
        <li>
          <center>
            <div align="left">
              <b><a name="301">301</a></b>
              <br>Redirect Permanently The page has a new URL. Update the listing to the new URL.
            </div>
          </center>
        </li>
        <li>
          <center>
            <div align="left">
              <b><a name="300">300</a></b>
              <br> Moved The page has moved to one of several possibilities. Pick the one that's closest to the original page, and update the URL.
            </div>
          </center>
        </li>
      </ul>
      <center>
        <div align="left"> 
          <h3><b><a name="client">400: Errors en el client</a></b></h3>
        </div>
      </center>
      <ul>
        <li><a name="417"></a><b>417 Expectation Failed</b><br>
          The expectation given in an Expect request-header field could not be 
          met by this server. Should never happen to Robozilla.</li>
        <li><b><a name="416"></a>416 Requested Range Not Satisfiable</b><br>
          A browser which sends information on acceptable file size as part of 
          its request, has requested a file that does not fit these parameters. 
          Since Robozilla does not send this header, this shouldn't happen unless 
          the server is misconfigured.</li>
        <li> <b><a name="415"></a>415 Unsupported Media Type</b><br>
          The server is refusing to service the request because the entity of 
          the request is in a format not supported by the requested resource for 
          the requested method. Back up a few levels and see if there's an alternate 
          version of the page you're looking for.</li>
        <li> <b><a name="414"></a>414 Request-URI Too Large</b> <br>
          The URL (usually created by a GET form request) is too large for the 
          server to handle. Check to see that a lot of garbage didn't somehow 
          get pasted in after the URL.</li>
        <li> <b><a name="413"></a>413 Request Entity Too Large</b> <br>
          The server is refusing to process a request because the request entity 
          is larger than the server is willing or able to process. Should never 
          occur for Robozilla.</li>
        <li><a name="412"></a> <b>412 Precondition Failed</b> <br>
          The precondition given in one or more of the request-header fields evaluated 
          to false when it was tested on the server. Should never occur for Robozilla.</li>
        <li> <b><a name="411"></a>411 Length Required</b><br>
          The server requires a content-length in the request. Should never occur 
          for Robozilla.</li>
        <li> <b><a name="410"></a>410 Gone</b> <br>
          The resource doesn't exist at all. The page was removed by the webmaster. 
          This page should be deleted. </li>
        <li><b><a name="409"></a>409 Conflict</b><br>
          The request could not be completed due to a conflict with the current 
          state of the resource. Typically indicates defective programming of 
          the Web server. </li>
        <li> <b><a name="408"></a>408 Request Time-Out</b><br>
          The server took longer than expected to return a page, and timed out. 
          Similar to -5, but generated by the server, rather than Robozilla. </li>
        <li><b><a name="407"></a>407 Proxy Authentication Required</b><br>
          This code is similar to 401 (Unauthorised), but indicates that the client 
          must first authenticate itself with the proxy. Since Robozilla doesn't 
          use a proxy, this should never occur unless on a faulty server. </li>
        <li><a name="406"></a><b>406 Not Acceptable</b><br>
          The server cannot generate a response that the requestor is willing 
          to accept.</li>
        <li> <b><a name="405"></a>405 Method Not Allowed</b><br>
          Usually happens when a CGI script doesn't allow GET requests any longer. 
          Backtrack the URL and see if you can find another way to show the data.</li>
        <li> <b><a name="404"></a>404 Not Found</b><br>
          The resource doesn't exist on this server. The page was probably removed. 
        </li>
        <li><b><a name="403"></a>403 Forbidden</b><br>
          You can't see this resource on the server. The admin may have turned 
          off the pages because of load or for some other reason.</li>
        <li><a name="402"></a> <b>402 Payment Required</b><br>
          This resource cannot be accessed without payment.</li>
        <li> <b><a name="401"></a>401 Unauthorised</b><br>
          You can't see this resource on the server. Perhaps a password is now 
          required, or the resource you're looking for has moved.</li>
        <li><a name="400"></a> <b>400 Bad Request</b><br>
          Usually occurs due to a space in the URL or other malformed URL syntax. 
          Try converting spaces to %20 and see if that fixes the error. </li>
      </ul>
      <ul>
      </ul>
      
      <h3><b><a name="server">500: Errors en el servidor</a></b></h3>
      <ul>
        <li>
          <b><a name="505">505 Versi d'HTTP no implementada</a></b>
          <br>El servidor no t implementada la versi del protocol HTTP que est fent-se servir en el missatge de demanda. Mai ha de passar amb el Robozilla; per si passs, el servidor pot estar mal configurat.
        </li>
        <li> <b><a name="504"></a>504 Gateway Timeout</b> <br>
          A server being used by this server has not responded in time. </li>
        <li>
          <b><a name="503">503 Servidor sobrecarregat></a></b>
          <br>Servei temporalment sobrecarregat. El servidor no pot processar la petici&oacuite; degut a una sobrecrrega.
        </li>
        <li>
          <b><a name="502">502 Passarella errnia</a></b>
          <br>El servidor, mentre funciona com a passarella o com a servidor intermediari, reb una resposta no vlida del servidor upstream que ha accedit provant de contestar a la demanda. Pot ser una problema temporal; espera uns dies i mira si s'arregla.
        </li>
        <li>
          <b><a name="501">501 No implementat</a></b>
          <br>Funci no implementada en el programari del servidor Web. Aix pot passar quan un lloc web ha estat passat a una altra plataforma (sistema operatiu). Cerca una URL actualitzada.
        </li>
        <li>
          <b><a name="500">500 Server error</a></b>
          <br>De vegades passa degut a una mala configuraci del servidor. Normalment l'error s temporal i marxa sol, per comprova-ho primer.
        </li>
      </ul>
    </div>