====== Unsupported Apache Modules, Directives, etc. ======
There are a few Apache modules and directives that are currently not supported by LiteSpeed. These items //may or may not// be supported in a future version of LSWS.

===== Modules =====
  * ''mod_speling''
  * Content negotiation via ''mod_negotiation''. For simple setup, you can use a rewrite-based solution.
  * ''mpm_winnt''
  * ''mod_cloudflare''


===== Directives =====
  * ''<Directory>...</Directory>'' with regular expression.
  * ''<if>...</if>'' not supported for 5.4.x and lower version, but it is supported since 6.0 version
  * ''SecAuditLogType'' in ''ModSecurity'' specifies the type of audit log to use: "Serial" or "Concurrent". LSWS does not support the "Concurrent" type.
  * ''ProxyPass '', not supported for 5.4.x and lower version, but it is supported since 6.0 version
  * Variables can be used in Apache functions, as shown in Apache's [[https://httpd.apache.org/docs/2.4/expr.html#vars|official documentation]], but LiteSpeed does not support functions such as md5 or base64. For example, ''%{md5:foo}'' is not supported. 
  * ''FallbackResource'' is not supported by LSWS. Instead, you can use rewrite rules.
  * ''RewriteMap'' is supported but ''[[https://httpd.apache.org/docs/2.4/rewrite/rewritemap.html#prg|prg: External Rewriting Program]]'' is not supported
  * In ''Header always edit Set-Cookie ^(.*)$ $1;HttpOnly;Secure'', ''edit'' is not supported.
  * ''AllowOverride'' is supported by ''AllowOverrideList'' is not.
  * ''DirectorySlash Off''
  * ''RequestHeader unset'', not supported by earlier version but supported starting 5.4.11 build 5
===== Other Unsupported Features =====
  * RTMP proxy