| <?xml version="1.0" encoding="UTF-8" ?> |
| <!DOCTYPE faq SYSTEM "../style/faq.dtd"> |
| <?xml-stylesheet type="text/xsl" href="../style/manual.en.xsl"?> |
| <!-- $Revision: 1.6 $ --> |
| |
| <!-- |
| Copyright 2003-2004 The Apache Software Foundation |
| |
| Licensed under the Apache License, Version 2.0 (the "License"); |
| you may not use this file except in compliance with the License. |
| You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| --> |
| |
| <faq metafile="error.xml.meta"> |
| <parentdocument href="./">FAQ</parentdocument> |
| |
| <title>Error Messages - Frequently Asked Questions</title> |
| <description>What does this error message mean?</description> |
| |
| |
| |
| <section id="error"><title>Error Messages</title> |
| <ul> |
| <li><a href="#error.sendfile">Invalid argument: |
| core_output_filter: writing data to the network</a></li> |
| <li><a href="#error.acceptex">AcceptEx failed</a></li> |
| <li><a href="#error.scriptheaders">Premature end of script |
| headers</a></li> |
| </ul> |
| |
| <section id="error.sendfile"><title>Invalid argument: |
| core_output_filter: writing data to the network</title> |
| |
| <p>Apache uses the <code>sendfile</code> syscall on platforms |
| where it is available in order to speed sending of responses. |
| Unfortunately, on some systems, Apache will detect the presence of |
| <code>sendfile</code> at compile-time, even when it does not work |
| properly. This happens most frequently when using network or |
| other non-standard file-system.</p> |
| |
| <p>Symptoms of this problem include the above message in the error |
| log and zero-length responses to non-zero-sized files. The |
| problem generally occurs only for static files, since dynamic |
| content usually does not make use of <code>sendfile</code>.</p> |
| |
| <p>To fix this problem, simply use the <directive |
| module="core">EnableSendfile</directive> directive to disable |
| <code>sendfile</code> for all or part of your server. Also see |
| the <directive module="core">EnableMMAP</directive>, which can |
| help with similar problems.</p> |
| |
| </section> |
| |
| <section id="error.acceptex"><title>AcceptEx Failed</title> |
| |
| <p>If you get error messages related to the <code>AcceptEx</code> syscall |
| on win32, see the <directive module="mpm_winnt">Win32DisableAcceptEx</directive> |
| directive.</p> |
| </section> |
| |
| |
| <section id="error.scriptheaders"><title>Premature end of script |
| headers</title> |
| |
| <p>Most problems with CGI scripts result in this message written in the |
| error log together with an <code>Internal Server Error</code> delivered |
| to the browser. A guide to helping debug this type of problem is |
| available in the <a href="../howto/cgi.html#troubleshoot">CGI |
| tutorial</a>.</p> |
| </section> |
| |
| </section> |
| |
| </faq> |
| |