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| author |   hongbotian <hongbo.tianhongbo@huawei.com> | 2015-11-30 01:35:09 -0500 |
|---|---|---|
| committer | hongbotian <hongbo.tianhongbo@huawei.com> | 2015-11-30 01:36:35 -0500 |
| commit | cc40af334e619bb549038238507407866f774f8f (patch) | |
| tree | 43ddc1974f72997a57173151eafb23e6025a13c9 /rubbos/app/apache2/manual/custom-error.html.en | |
| parent | 68e74fd78b2485e5914ce34a5b30f4485029e021 (diff) | |
upload apache
JIRA: BOTTLENECK-10
Change-Id: I67eae31de6dc824097dfa56ab454ba36fdd23a2c
Signed-off-by: hongbotian <hongbo.tianhongbo@huawei.com>
Diffstat (limited to 'rubbos/app/apache2/manual/custom-error.html.en')
| -rw-r--r-- | rubbos/app/apache2/manual/custom-error.html.en | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/rubbos/app/apache2/manual/custom-error.html.en b/rubbos/app/apache2/manual/custom-error.html.en new file mode 100644 index 00000000..e0f688e0 --- /dev/null +++ b/rubbos/app/apache2/manual/custom-error.html.en @@ -0,0 +1,208 @@ +<?xml version="1.0" encoding="ISO-8859-1"?> +<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> +<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"><head><!-- + XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX + This file is generated from xml source: DO NOT EDIT + XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX + --> +<title>Custom Error Responses - Apache HTTP Server</title> +<link href="./style/css/manual.css" rel="stylesheet" media="all" type="text/css" title="Main stylesheet" /> +<link href="./style/css/manual-loose-100pc.css" rel="alternate stylesheet" media="all" type="text/css" title="No Sidebar - Default font size" /> +<link href="./style/css/manual-print.css" rel="stylesheet" media="print" type="text/css" /> +<link href="./images/favicon.ico" rel="shortcut icon" /></head> +<body id="manual-page"><div id="page-header"> +<p class="menu"><a href="./mod/">Modules</a> | <a href="./mod/directives.html">Directives</a> | <a href="./faq/">FAQ</a> | <a href="./glossary.html">Glossary</a> | <a href="./sitemap.html">Sitemap</a></p> +<p class="apache">Apache HTTP Server Version 2.0</p> +<img alt="" src="./images/feather.gif" /></div> +<div class="up"><a href="./"><img title="<-" alt="<-" src="./images/left.gif" /></a></div> +<div id="path"> +<a href="http://www.apache.org/">Apache</a> > <a href="http://httpd.apache.org/">HTTP Server</a> > <a href="http://httpd.apache.org/docs/">Documentation</a> > <a href="./">Version 2.0</a></div><div id="page-content"><div id="preamble"><h1>Custom Error Responses</h1> +<div class="toplang"> +<p><span>Available Languages: </span><a href="./en/custom-error.html" title="English"> en </a> | +<a href="./es/custom-error.html" hreflang="es" rel="alternate" title="Español"> es </a> | +<a href="./fr/custom-error.html" hreflang="fr" rel="alternate" title="Français"> fr </a> | +<a href="./ja/custom-error.html" hreflang="ja" rel="alternate" title="Japanese"> ja </a> | +<a href="./ko/custom-error.html" hreflang="ko" rel="alternate" title="Korean"> ko </a> | +<a href="./tr/custom-error.html" hreflang="tr" rel="alternate" title="Türkçe"> tr </a></p> +</div> + + <p>Additional functionality allows webmasters to configure the response + of Apache to some error or problem.</p> + + <p>Customizable responses can be defined to be activated in the event of + a server detected error or problem.</p> + + <p>If a script crashes and produces a "500 Server Error" response, + then this response can be replaced with either some friendlier text or by + a redirection to another URL (local or external).</p> + </div> +<div id="quickview"><ul id="toc"><li><img alt="" src="./images/down.gif" /> <a href="#behavior">Behavior</a></li> +<li><img alt="" src="./images/down.gif" /> <a href="#configuration">Configuration</a></li> +<li><img alt="" src="./images/down.gif" /> <a href="#custom">Custom Error Responses and Redirects</a></li> +</ul></div> +<div class="top"><a href="#page-header"><img alt="top" src="./images/up.gif" /></a></div> +<div class="section"> +<h2><a name="behavior" id="behavior">Behavior</a></h2> + + + <h3>Old Behavior</h3> + + + <p>NCSA httpd 1.3 would return some boring old error/problem message + which would often be meaningless to the user, and would provide no + means of logging the symptoms which caused it.</p> + + + <h3>New Behavior</h3> + + + <p>The server can be asked to:</p> + + <ol> + <li>Display some other text, instead of the NCSA hard coded + messages, or</li> + + <li>redirect to a local URL, or</li> + + <li>redirect to an external URL.</li> + </ol> + + <p>Redirecting to another URL can be useful, but only if some + information can be passed which can then be used to explain and/or log + the error/problem more clearly.</p> + + <p>To achieve this, Apache will define new CGI-like environment + variables:</p> + + <div class="example"><p><code> + REDIRECT_HTTP_ACCEPT=*/*, image/gif, image/x-xbitmap, + image/jpeg<br /> + REDIRECT_HTTP_USER_AGENT=Mozilla/1.1b2 (X11; I; HP-UX A.09.05 + 9000/712)<br /> + REDIRECT_PATH=.:/bin:/usr/local/bin:/etc<br /> + REDIRECT_QUERY_STRING=<br /> + REDIRECT_REMOTE_ADDR=121.345.78.123<br /> + REDIRECT_REMOTE_HOST=ooh.ahhh.com<br /> + REDIRECT_SERVER_NAME=crash.bang.edu<br /> + REDIRECT_SERVER_PORT=80<br /> + REDIRECT_SERVER_SOFTWARE=Apache/0.8.15<br /> + REDIRECT_URL=/cgi-bin/buggy.pl + </code></p></div> + + <p>Note the <code>REDIRECT_</code> prefix.</p> + + <p>At least <code>REDIRECT_URL</code> and + <code>REDIRECT_QUERY_STRING</code> will be passed to the + new URL (assuming it's a cgi-script or a cgi-include). The + other variables will exist only if they existed prior to + the error/problem. <strong>None</strong> of these will be + set if your <code class="directive"><a href="./mod/core.html#errordocument">ErrorDocument</a></code> is an + <em>external</em> redirect (anything starting with a + scheme name like <code>http:</code>, even if it refers to the same host + as the server).</p> + + </div><div class="top"><a href="#page-header"><img alt="top" src="./images/up.gif" /></a></div> +<div class="section"> +<h2><a name="configuration" id="configuration">Configuration</a></h2> + + + <p>Use of <code class="directive"><a href="./mod/core.html#errordocument">ErrorDocument</a></code> is enabled + for .htaccess files when the + <code class="directive"><a href="./mod/core.html#allowoverride">AllowOverride</a></code> is set accordingly.</p> + + <p>Here are some examples...</p> + + <div class="example"><p><code> + ErrorDocument 500 /cgi-bin/crash-recover <br /> + ErrorDocument 500 "Sorry, our script crashed. Oh dear" <br /> + ErrorDocument 500 http://xxx/ <br /> + ErrorDocument 404 /Lame_excuses/not_found.html <br /> + ErrorDocument 401 /Subscription/how_to_subscribe.html + </code></p></div> + + <p>The syntax is,</p> + + <div class="example"><p><code> + ErrorDocument <3-digit-code> <action> + </code></p></div> + + <p>where the action can be,</p> + + <ol> + <li>Text to be displayed. Prefix the text with a quote + ("). Whatever follows the quote is displayed. <em>Note: + the (") prefix isn't displayed.</em></li> + + <li>An external URL to redirect to.</li> + + <li>A local URL to redirect to.</li> + </ol> + </div><div class="top"><a href="#page-header"><img alt="top" src="./images/up.gif" /></a></div> +<div class="section"> +<h2><a name="custom" id="custom">Custom Error Responses and Redirects</a></h2> + + + <p>Apache's behavior to redirected URLs has been modified so + that additional environment variables are available to a + script/server-include.</p> + + <h3>Old behavior</h3> + + + <p>Standard CGI vars were made available to a script which + has been redirected to. No indication of where the + redirection came from was provided.</p> + + + <h3>New behavior</h3> + + + <p>A new batch of environment variables will be initialized + for use by a script which has been redirected to. Each new + variable will have the prefix <code>REDIRECT_</code>. + <code>REDIRECT_</code> environment variables are created from + the CGI environment variables which existed prior to the + redirect, they are renamed with a <code>REDIRECT_</code> + prefix, <em>i.e.</em>, <code>HTTP_USER_AGENT</code> becomes + <code>REDIRECT_HTTP_USER_AGENT</code>. In addition to these + new variables, Apache will define <code>REDIRECT_URL</code> + and <code>REDIRECT_STATUS</code> to help the script trace its + origin. Both the original URL and the URL being redirected to + can be logged in the access log.</p> + + <p>If the ErrorDocument specifies a local redirect to a CGI + script, the script should include a "<code>Status:</code>" + header field in its output in order to ensure the propagation + all the way back to the client of the error condition that + caused it to be invoked. For instance, a Perl ErrorDocument + script might include the following:</p> + + <div class="example"><p><code> + ... <br /> + print "Content-type: text/html\n"; <br /> + printf "Status: %s Condition Intercepted\n", $ENV{"REDIRECT_STATUS"}; <br /> + ... + </code></p></div> + + <p>If the script is dedicated to handling a particular error + condition, such as <code>404 Not Found</code>, it can + use the specific code and error text instead.</p> + + <p>Note that the script <em>must</em> emit an appropriate + <code>Status:</code> header (such as <code>302 Found</code>), if the + response contains a <code>Location:</code> header (in order to issue a + client side redirect). Otherwise the <code>Location:</code> header may + have no effect.</p> + + </div></div> +<div class="bottomlang"> +<p><span>Available Languages: </span><a href="./en/custom-error.html" title="English"> en </a> | +<a href="./es/custom-error.html" hreflang="es" rel="alternate" title="Español"> es </a> | +<a href="./fr/custom-error.html" hreflang="fr" rel="alternate" title="Français"> fr </a> | +<a href="./ja/custom-error.html" hreflang="ja" rel="alternate" title="Japanese"> ja </a> | +<a href="./ko/custom-error.html" hreflang="ko" rel="alternate" title="Korean"> ko </a> | +<a href="./tr/custom-error.html" hreflang="tr" rel="alternate" title="Türkçe"> tr </a></p> +</div><div id="footer"> +<p class="apache">Copyright 2009 The Apache Software Foundation.<br />Licensed under the <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache License, Version 2.0</a>.</p> +<p class="menu"><a href="./mod/">Modules</a> | <a href="./mod/directives.html">Directives</a> | <a href="./faq/">FAQ</a> | <a href="./glossary.html">Glossary</a> | <a href="./sitemap.html">Sitemap</a></p></div> +</body></html>
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