Server Directives


Description Map URLs and leading URL portions to file system locations.
Alias urlPortion destinationPath
Context Default server, Virtual host
Alias /manual /ftp/manualDirectory
The Alias directive allows URLs to refer to documents that are stored outside the Document Root. The urlPortion of the request URL will be mapped onto the nominated destinationPath which may be a file or a directory anywhere on the system.

It is an easy mistake to have mismatched trailing slashes. If you have a trailing slash on the urlPortion ensure you also have one on the destinationPath. AppWeb will warn you if you have mismatched trailing slashes.


Description Directory containing the documents to be published for the default server.
DocumentRoot directoryPath
Context Default server, Virtual host
DocumentRoot /var/www
The DocumentRoot directive defines the directory containing the documents that will be served by the default server. The directoryPath should not have a trailing slash.


Description Control extra path processing for a request
ExtraPath on|off
Context Default server, Virtual host, Location

    ExtraPath on

The ExtraPath directive explicitly controls whether extra path processing is performed on a URL. Extra path processing is where the URL portion after an Alias match and script name is stripped and stored in the PATH_INFO and PATH_TRANSLATED variables in the request[] variable array. The ESP handler by default, does not do extrap path processing. Use this directive to enable extra path processing for ESP if you require it.

In the example above, the URL


would have the /extra/path stripped off and stored in PATH_INFO.


Description Account group that AppWeb will run as.
Synopsis Group accountGroup
Context Default server
Group nobody
The Group directive specifies the account group in which AppWeb will be a member when running.

WARNING: It is extremely dangerous to run AppWeb as Group "root" or "administrators".

It is important that you run AppWeb with the lowest system privilege that will get the job done. If any application is compromised, including AppWeb, then the system will be safest if the compromised application has as few privileges as possible.

When AppWeb starts it initially runs as root or administrator and then changes to the user account defined in the AppWeb configuration file by the User directive. As installed, AppWeb will be configured to run using the nobody account on Linux and in the guest account on Windows.


Description IP address and port on which to listing for incoming requests.
Synopsis Listen [IP address:]portNumber
Context Default server, Virtual Host
Listen 80
The Listen directive specifies the IP endpoints on which AppWeb will listen for incoming HTTP requests. If you specify only the portNumber and omit the IP address, AppWeb will listen on all network interfaces including the loop-back adaptor. Multiple Listen directives may be given and AppWeb will listen on all the specified endpoints.

If you are using virtual hosts, you must still specify a Listen directive for the endpoint that the virtual host will serve. It makes no difference where you specify a Listen directive. in the configuration file. For compatibility with Apache, you should specify your listen directives outside any VirtualHost blocks.


Description HTTP protocol version to use
Synopsis Protocol [HTTP/1.0 | HTTP/1.1]
Context Default server
Protocol HTTP/1.0
The Protocol directive specifies the HTTP protocol version to respond with. If the Protocol directive specifies HTTP/1.0, a browser may issue requests using either HTTP/1.0 or HTTP/1.1. However, the response will always be downgraded to use HTTP/1.0 without Keep-Alive support.

If the Protocol directive specifies HTTP/1.1 and a browser makes a request using HTTP/1.0 it will not be processed and the client will receive an error.

NOTE: this directive is proprietary to AppWeb and is not an Apache directive.


Description Redirect requests to a new target.
Synopsis Redirect [status] oldUrl newUrl
Context Default server, VirtualHost, Directory
Redirect temp /pressRelease.html /fixedPressRelease.html
Redirect permanent /acme.html
Redirect 410 /membersOnly
The Redirect directive translates requests to a URL into a new URL. The old URL may be a full URL or it may be a leading portion of a URL. Typical use for URL portions is to redirect all requests below a directory to another directory or site.

The new URL may be local to the system, in which case it will begin with a "/" character. Or it may be on another system, in which case it will begin with "http://". In both cases, the user will receive a HTTP redirection response informing them of the new location of the document.

The status argument may be either a numeric HTTP code or it may be one of the following symbolic codes:
  • permanent -- Permanent redirection. HTTP code 301.
  • temp -- Temporary redirection. HTTP code 302
  • seeother -- Document has been replaced, see other document. HTTP code 303.
  • gone -- The resource has been remove. HTTP code 410. The newURL argument is ignored.


Description Map a URL to a destination and enable CGI script processing for that location.
Synopsis ScriptAlias urlPath destinationPath
Context Default server, Virtual Host
ScriptAlias /cgi-bin/ /var/myHost/cgi-bin
The ScriptAlias directive maps a URL to a file system path and enables the processing of CGI scripts in that directory. The ScriptAlias directive is a convenient short-hand and is equivalent to the following directives:

Alias /cgi-bin/ "/var/myHost/cgi-bin/"
SetHandler cgiHandler

SECURITY WARNING: Make sure you locate your CGI script directories outside the DocumentRoot.


Description Define the fully qualified hostname and port number for the server to use.
Synopsis ServerName hostName
Context Default server, Virtual Host
The ServerName directive allows the server to create a HTTP address for itself to use when creating redirection URLs. The hostName should be a fully qualified domain name with port number if using a port other than port 80.

When used inside Name VirtualHost blocks, the ServerName directive specifies the name that must be specified in the "Host" HTTP header.  


Description Directory containing the core AppWeb installation files
Synopsis ServerRoot directoryPath
Context Default server
ServerRoot /etc/appWeb
The ServerRoot is by default /etc/appWeb on Linux and C:\appWeb on Windows. It is important that the server root directory be protected against modification by other users. It should be owned by either root or administrator and should only be writable by these users.


Description Specifies if client session state stores should be automatically created.
Synopsis SessionAutoCreate on|off
Context Default server, Virtual Host
SessionAutoCreate on
Client session state can be used to preserve state information for a given client across individual HTTP requests. A client session is represented by a session ID that is stored in a cookie on the clients system. Once created, all requests from the client supply the session ID cookie and the AppWeb server uses that to retrieve the state variable store for that client.

If SessionAutoCreate is not enabled, sessions may still be used but each web page will need to activate session handling. For example: ESP pages should call useSessions at the top of the page.


Description Specify the location of the Mime types file
Synopsis TypesConfig directoryPath
Context Default server
TypesConfig /etc/appWeb/mime.types
The TypeConfig directive specifies the location of the MIME types files. This file contains the mappings from file extensions to content types and is used by AppWeb to determine the document content type which is included in the HTTP response back to the browser. The MIME types file included with AppWeb follows the standard specified by IANA.

The directory path may be an absolute path or it may be relative to the ServerRoot directory.

The MIME types file has lines of the format:

ApplicationType [extensions]...

Feel free to modify the default mime types file, but be careful to save it as it will be overwritten should you upgrade AppWeb.


Description The user account that AppWeb will run as.
Synopsis User accountName
Context Default server
User nobody
The User directive instructs AppWeb to change accounts to run as the specified accountName.
The User directive can only be used if AppWeb is started using a privileged account such as root. Normally AppWeb is started using the account root or administrator and thereafter it changes to run with less privilege using the specified accountName.

The accountName chosen for the User directive should have minimal privilege and should not be able to read or modify any files outside the DocumentRoot or specified Alias directories.

SECURITY WARNING: do not run as root or administrator. Omitting the User directive can have the same effect as using a "User root" directive.


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