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* Readme explaining use of FastCGI (by Attila Borka)
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@ -2603,6 +2603,7 @@ packages/fcl-web/examples/webdata/demo6/wmusers.pp svneol=native#text/plain
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packages/fcl-web/examples/webdata/demos.txt svneol=native#text/plain
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packages/fcl-web/examples/webdata/demos.txt svneol=native#text/plain
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packages/fcl-web/examples/webdata/users.dbf -text
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packages/fcl-web/examples/webdata/users.dbf -text
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packages/fcl-web/fpmake.pp svneol=native#text/plain
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packages/fcl-web/fpmake.pp svneol=native#text/plain
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packages/fcl-web/src/base/FCGI-README.txt svneol=native#text/plain
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packages/fcl-web/src/base/Makefile svneol=native#text/plain
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packages/fcl-web/src/base/Makefile svneol=native#text/plain
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packages/fcl-web/src/base/Makefile.fpc svneol=native#text/plain
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packages/fcl-web/src/base/Makefile.fpc svneol=native#text/plain
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packages/fcl-web/src/base/README.txt svneol=native#text/plain
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packages/fcl-web/src/base/README.txt svneol=native#text/plain
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packages/fcl-web/src/base/FCGI-README.txt
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packages/fcl-web/src/base/FCGI-README.txt
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FCGI-README.txt
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Last modified: Attila Borka 05/31/2011
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-------------------------------------------------------------------------------
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This readme will try to explain and help developers how to be able to
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use the FastCGI protocol in Lazarus (package fpweb/lazweb) and FPC
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(/packages/fcl-web) applications with the Apache web server.
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There are two FCGI implementations we are able to use at the moment (FPC
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rev17597 /2.5.1/) with FPC/Lazarus:
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1. mod_fcgid maintained by Apache (ASF) http://httpd.apache.org/mod_fcgid/
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Easy to set up and use, Apache develops and maintains it. Just needs a
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download/install and it is ready to go, even on Linux.
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There are a lot of options and fine tuning that can be used, please refer to
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their documentation at http://httpd.apache.org/mod_fcgid/mod/mod_fcgid.html .
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2. mod_fastcgi from http://www.fastcgi.com/ the original FCGI "inventors"
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The latest downloads are available from http://www.fastcgi.com/dist/ . Do not
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be alarmed if the latest one is years old. FCGI is a very stable protocol
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since many years (started in 1996).
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On Linux, you will need to compile the mod_fastcgi module from the source
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codes, as binaries are only available for Windows as a DLL.
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Note, that mod_fastcgi supports the use of External FCGI Servers, which makes
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it possible to run the FCGI application from within Lazarus for example, and
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be able to debug it with the GUI on the fly while it is generating the
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response pages. This can be a good choice for a development environment.
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The documentation is at http://www.fastcgi.com/drupal/node/6 .
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There are benefits to use both, everyone needs to decide which one fits their
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needs the best for a development environment or a live web server after some
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research on these modules.
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Do not forget, that unless you use the External FCGI Server way, you need to
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restart your web server every time you recompile your FCGI program.
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In case you use the External FCGI Server, you need to restart the application
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itself after every recompile for the changes to take effect in the web server
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responses. The Apache server does not need to be restarted every time in this
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latter case.
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===============================================================================
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1. mod_fcgid from Apache
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1.1 on Windows
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1.2 on Linux
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2. mod_fastcgi from fastcgi.com
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2.1 on Windows
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2.1 on Linux
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===============================================================================
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1. mod_fcgid from Apache:
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=========================
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1.1 mod_fcgid from Apache on Windows:
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-------------------------------------
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Setup Steps:
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1.1.1 Download from http://httpd.apache.org/download.cgi#mod_fcgid the latest
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Windows zip file and unpack as it instructs you to, over the installed Apache
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directory. This puts the mod_fcgid.* files under the current /modules
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directory of Apache.
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1.1.2 Now, mod_fcgid is ready to be used as soon as we load it with Apache.
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1.1.3 If you have not done so yet, compile your FCGI application.
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1.1.4 Then, edit the Apache /conf/httpd.conf file and add to the end:
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############
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LoadModule fcgid_module "modules/mod_fcgid.so"
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<IfModule mod_fcgid.c>
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<Directory "<Path_To_Your_FCGI_application>">
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SetHandler fcgid-script
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# Options +ExecCGI <- not needed if ScriptAlias is used below
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Order allow,deny
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Allow from all
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</Directory>
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#optionally, to shorten the URL and to not display the executable file name
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#(if ScriptAlias is used, no +ExecCGI is needed above)
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ScriptAlias /myfcgid "<Path_To_Your_FCGI_application>/<Your_FCGI_application>"
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</IfModule>
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############
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Example:
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LoadModule fcgid_module "modules/mod_fcgid.so"
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<IfModule mod_fcgid.c>
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<Directory "C:/My Programs/LazarusFCGITest">
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SetHandler fcgid-script
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Order allow,deny
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Allow from all
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</Directory>
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ScriptAlias /myfcgid "C:/My Programs/LazarusFCGITest/helloworld.exe"
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</IfModule>
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Note, there are many ways to configure the FCGI applications, this is just but
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one example. You can check the Apache and mod_fcgid documentation for
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alternatives.
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1.1.5 Start/Restart your Apache server so it will load your FCGI application.
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If everything went according to plan, your FCGI application should be listed
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in the Windows task manager as running.
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1.1.6 Open your web browser and try to call your new FCGI application.
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Example:
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http://127.0.0.1:8080/myfcgid/func1call
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or
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http://127.0.0.1/myfcgid/func1call
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depending on your Apache installation and configuration. "myfcgid" is the
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ScriptAlias name specified for the FCGI application, func1call is the action
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name we want to call within our default web module. If you have multiple web
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modules, you can enter the desired web module name before the action name, for
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example:
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http://127.0.0.1:8080/myfcgid/webmodule1/func1call
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or
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http://127.0.0.1/myfcgid/webmodule1/func1call
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If there is any problem, you can try and check the Apache error.log for clues.
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1.2 mod_fcgid from Apache on Linux:
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-----------------------------------
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Setup Steps:
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1.2.1 Install the mod_fcgi module for Apache with your distro's package
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manager.
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Example on Ubuntu:
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sudo apt-get install libapache2-mod-fcgid
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This downloads, installs and configures mod_fcgid without the need to do
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anything else.
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1.2.2 Now, mod_fcgid is ready to be used as soon as we load it with Apache.
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mod_fcgid.so should be sitting in the /usr/lib/apache2/modules/ directory (on
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Ubuntu)
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1.2.3 If you have not done so yet, compile your FCGI application.
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1.2.4 Edit the Apache configuration file (/etc/apache2/apache2.conf on Ubuntu)
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and add to the end:
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############
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LoadModule fcgid_module "<Path_To_Mod>/mod_fcgid.so"
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<IfModule mod_fcgid.c>
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<Directory "<Path_To_Your_FCGI_application>">
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SetHandler fcgid-script
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# Options +ExecCGI <- not needed if ScriptAlias is used below
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Order allow,deny
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Allow from all
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</Directory>
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#optionally, to shorten the URL and to not display the executable file name
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#(if ScriptAlias is used, no +ExecCGI is needed above)
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ScriptAlias /myfcgid "<Path_To_Your_FCGI_application>/<Your_FCGI_application>"
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</IfModule>
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############
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Example:
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LoadModule fcgid_module "/usr/lib/apache2/modules/mod_fcgid.so"
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<IfModule mod_fcgid.c>
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<Directory "/home/johndoe/LazarusFCGITest">
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SetHandler fcgid-script
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Order allow,deny
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Allow from all
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</Directory>
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ScriptAlias /myfcgid "/home/johndoe/LazarusFCGITest/helloworld"
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</IfModule>
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(the project was compiled into directory /home/johndoe/LazarusFCGITest/ , and
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the FCGI application is called helloworld with no file extension)
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Note, there are many ways to configure the FCGI applications, this is just but
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one example. You can check the Apache and mod_fcgid documentation for
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alternatives.
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1.2.5 Start/Restart your Apache server so it will load your FCGI application.
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If everything went according to plan, and you do a "sudo netstat -l"
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(on Ubuntu) from a terminal window, there should be a new line in the result
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list looking something like this:
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... LISTENING XXXX /var/lib/apache2/fcgid/sock/...
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indicating, that the Apache mod_fcgid module has loaded your FCGI application.
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1.2.6 Open your web browser and try to call your new FCGI application.
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Example:
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http://127.0.0.1/myfcgid/func1call
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"myfcgid" is the ScriptAlias name specified for the FCGI application, and
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func1call is the action name we want to call within our default web module.
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|
If you have multiple web modules, you can enter the desired web module name
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before the action name, for example:
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http://127.0.0.1/myfcgid/webmodule1/func1call .
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If there is any problem, you can try and check the Apache error.log for clues.
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2. mod_fastcgi from fastcgi.com:
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================================
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Unlike the Apache developed mod_fcgid, mod_fastcgi has two main operating
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modes for FCGI applications. One is very similar to mod_fcgid (where Apache
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itself loads the FCGI application at startup), and one called External FCGI
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Server mode. With this latter, Apache will not load the FCGI application at
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startup, but it has to be running on its own when a web request arrives
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(either as a system service/daemon, or a simple running application) and
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listening. This makes it possible to run the FCGI application from within a
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debugger interactively, to see/track the request handling like any normal GUI
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application debugging.
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2.1 mod_fastcgi from fastcgi.com on Windows:
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--------------------------------------------
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Setup Steps:
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2.1.1 Download the latest SNAP or stable DLL from http://www.fastcgi.com/dist/
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and put it into the Apache /modules/ directory.
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2.1.2 If you have not done so yet, compile your FCGI application.
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In case you want to set up an External FCGI Server, then you must specify a
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port number in your main project file (.lpr) before the Application.Run
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instruction (this is the only change needed).
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Example:
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<...snip...>
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Application.Initialize;
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Application.Port:=9999;//Port the FCGI application is listening on
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Application.Run;
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<...snip...>
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2.1.3 Edit the Apache /conf/httpd.conf file and add to the end:
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2.1.3.a External FCGI Server
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############
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LoadModule fastcgi_module "modules/<mod_fastcgi_DLL_name>"
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<IfModule mod_fastcgi.c>
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<Directory "<Path_To_Your_FCGI_application>">
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# Options +ExecCGI <- not needed if ScriptAlias is used below
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Order allow,deny
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Allow from all
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</Directory>
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#External FCGI app, has to be started and running when a request comes in
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FastCgiExternalServer "<Path_To_Your_FCGI_application>/<Your_FCGI_application>" -host 127.0.0.1:<Port> -idle-timeout 30 -flush
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#optionally, to shorten the URL and to not display the executable file name (if used, no +ExecCGI is needed above):
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ScriptAlias /myfcgi "<Path_To_Your_FCGI_application>/<Your_FCGI_application>"
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</IfModule>
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############
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Example:
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LoadModule fastcgi_module "modules/mod_fastcgi-2.4.6-AP22.dll"
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<IfModule mod_fastcgi.c>
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<Directory "C:/My Programs/LazarusFCGITest">
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Order allow,deny
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Allow from all
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</Directory>
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FastCgiExternalServer "C:/My Programs/LazarusFCGITest/helloworld.exe" -host 127.0.0.1:9999 -idle-timeout 30 -flush
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ScriptAlias /myfcgi "C:/My Programs/LazarusFCGITest/helloworld.exe"
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</IfModule>
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2.1.3.b Regular FCGI Server
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Replace the FastCgiExternalServer line above with
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FastCgiServer "<Path_To_Your_FCGI_application>/<Your_FCGI_application>" -idle-timeout 30
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Example:
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LoadModule fastcgi_module "modules/mod_fastcgi-2.4.6-AP22.dll"
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<IfModule mod_fastcgi.c>
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<Directory "C:/My Programs/LazarusFCGITest">
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Order allow,deny
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Allow from all
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</Directory>
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FastCgiServer "C:/My Programs/LazarusFCGITest/helloworld.exe" -idle-timeout 30
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ScriptAlias /myfcgi "C:/My Programs/LazarusFCGITest/helloworld.exe"
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</IfModule>
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Known issues on Windows:
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|
http://bugs.freepascal.org/view.php?id=19440
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2.1.4 Start/Restart your Apache server.
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|
If you will use the FastCgiExternalServer, then start your application
|
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|
manually, so it can start accepting incoming requests from the web server.
|
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|
If you use the FastCgiServer, then your FCGI application should be launched
|
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|
by the Apache server when it starts and should be listed in the Windows task
|
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|
manager as running.
|
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|
|
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|
2.1.5 Open your web browser and try to call your new FCGI application.
|
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|
Example:
|
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|
http://127.0.0.1:8080/myfcgi/func1call
|
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|
or
|
||||||
|
http://127.0.0.1/myfcgi/func1call
|
||||||
|
depending on your Apache installation and configuration.
|
||||||
|
|
||||||
|
"myfcgi" is the ScriptAlias name specified for the FCGI application, and
|
||||||
|
func1call is the action name we want to call within our default web module.
|
||||||
|
If you have multiple web modules, you can enter the desired web module name
|
||||||
|
before the action name, for example:
|
||||||
|
http://127.0.0.1:8080/myfcgi/webmodule1/func1call
|
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|
or
|
||||||
|
http://127.0.0.1/myfcgi/webmodule1/func1call
|
||||||
|
|
||||||
|
If there is any problem, you can try and check the Apache error.log for clues.
|
||||||
|
|
||||||
|
|
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|
2.2 mod_fastcgi from fastcgi.com on Linux:
|
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|
------------------------------------------
|
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|
Setup Steps:
|
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|
2.2.1 There are no binaries offered for download for Linux, so we need to get
|
||||||
|
the mod_fastcgi source codes from http://www.fastcgi.com/dist/ and compile it.
|
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|
|
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|
2.2.1.1. If the Apache development package headers are not installed, then
|
||||||
|
we need to get them first:
|
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|
(on Ubuntu)
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|
>sudo apt-get install apache2-dev
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|
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|
2.2.1.2. Get the fastcgi module sources (get the latest SNAP or highest
|
||||||
|
version stable release from http://www.fastcgi.com/dist/ )
|
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|
|
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|
>cd /home/johndoe
|
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|
>wget http://www.fastcgi.com/dist/mod_fastcgi-xxxxxxxxxxx.tar.gz
|
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|
|
||||||
|
Example: wget http://www.fastcgi.com/dist/mod_fastcgi-SNAP-0910052141.tar.gz
|
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|
|
||||||
|
2.2.1.3. Unpack the source code files.
|
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|
>tar -xzf mod_fastcgi-*.tar.gz
|
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|
|
||||||
|
2.2.1.4. Configure the makefile (we use Apache 2.2, so need the Makefile.AP2).
|
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|
>cd mod_fastcgi-*
|
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|
>cp Makefile.AP2 Makefile
|
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|
|
||||||
|
2.2.1.5. Edit the copied Makefile and set top_dir to the proper apache source
|
||||||
|
directory created by the Apache development package install. For example, on
|
||||||
|
Ubuntu it is /usr/share/apache2 (containing the .mk file).
|
||||||
|
|
||||||
|
2.2.1.6. Compile and install (on Ubuntu)
|
||||||
|
>make
|
||||||
|
>sudo make install
|
||||||
|
|
||||||
|
2.2.2. Now, we should have a mod_fastcgi.so in /usr/lib/apache2/modules (on
|
||||||
|
Ubuntu)
|
||||||
|
|
||||||
|
2.2.3. If you have not done so yet, compile your FCGI application.
|
||||||
|
In case you want to set up an External FCGI Server, then you must specify a
|
||||||
|
port number in your main project file (.lpr) before the Application.Run
|
||||||
|
instruction (this is the only change needed).
|
||||||
|
Example:
|
||||||
|
<...snip...>
|
||||||
|
Application.Initialize;
|
||||||
|
Application.Port:=1234;//Port the FCGI application is listening on
|
||||||
|
Application.Run;
|
||||||
|
<...snip...>
|
||||||
|
|
||||||
|
2.2.4 Edit the Apache configuration file (/etc/apache2/apache2.conf on Ubuntu)
|
||||||
|
and add to the end:
|
||||||
|
2.2.4.a External FCGI Server
|
||||||
|
############
|
||||||
|
LoadModule fastcgi_module "<Path_To_Mod>/mod_fastcgi.so"
|
||||||
|
<IfModule mod_fastcgi.c>
|
||||||
|
<Directory "<Path_To_Your_FCGI_application>">
|
||||||
|
# Options +ExecCGI <- not needed if ScriptAlias is used below
|
||||||
|
Order allow,deny
|
||||||
|
Allow from all
|
||||||
|
</Directory>
|
||||||
|
#External FCGI app, has to be manually started and running when a request comes in
|
||||||
|
FastCgiExternalServer "<Path_To_Your_FCGI_application>/<Your_FCGI_application>" -host 127.0.0.1:<Port> -idle-timeout 30 -flush
|
||||||
|
#optionally, to shorten the URL and to not display the executable file name (if used, no +ExecCGI is needed above):
|
||||||
|
ScriptAlias /myfcgi "<Path_To_Your_FCGI_application>/<Your_FCGI_application>"
|
||||||
|
</IfModule>
|
||||||
|
############
|
||||||
|
Example:
|
||||||
|
LoadModule fastcgi_module "/usr/lib/apache2/modules/mod_fastcgi.so"
|
||||||
|
<IfModule mod_fastcgi.c>
|
||||||
|
<Directory "/home/johndoe/LazarusFCGITest">
|
||||||
|
Order allow,deny
|
||||||
|
Allow from all
|
||||||
|
</Directory>
|
||||||
|
FastCgiExternalServer "/home/johndoe/LazarusFCGITest/helloworld" -host 127.0.0.1:1234 -idle-timeout 30 -flush
|
||||||
|
ScriptAlias /myfcgi "/home/johndoe/LazarusFCGITest/helloworld"
|
||||||
|
</IfModule>
|
||||||
|
|
||||||
|
2.2.4.b Regular FCGI Server
|
||||||
|
Replace the FastCgiExternalServer line above with
|
||||||
|
FastCgiServer "<Path_To_Your_FCGI_application>/<Your_FCGI_application>" -idle-timeout 30
|
||||||
|
|
||||||
|
Example:
|
||||||
|
LoadModule fastcgi_module "/usr/lib/apache2/modules/mod_fastcgi.so"
|
||||||
|
<IfModule mod_fastcgi.c>
|
||||||
|
<Directory "/home/johndoe/LazarusFCGITest">
|
||||||
|
Order allow,deny
|
||||||
|
Allow from all
|
||||||
|
</Directory>
|
||||||
|
FastCgiServer "/home/johndoe/LazarusFCGITest/helloworld" -idle-timeout 30
|
||||||
|
ScriptAlias /myfcgi "/home/johndoe/LazarusFCGITest/helloworld"
|
||||||
|
</IfModule>
|
||||||
|
|
||||||
|
(the project is compiled into directory /home/johndoe/LazarusFCGITest/ , and
|
||||||
|
the FCGI application is called helloworld with no file extension)
|
||||||
|
|
||||||
|
Note, there are many ways to configure the FCGI applications, this is just but
|
||||||
|
one example. You can check the Apache and mod_fastcgi documentation for
|
||||||
|
alternatives. For example, some more information available at
|
||||||
|
http://www.fastcgi.com/docs/faq.html#typical_httpd.conf
|
||||||
|
|
||||||
|
2.2.5 Start/Restart your Apache server.
|
||||||
|
If FastCgiExternalServer is used, then start your application manually, so it
|
||||||
|
can start accepting incoming requests from the web server.
|
||||||
|
On the other hand, if FastCgiServer is used and everything went according to
|
||||||
|
plan, then the Apache error.log should contain a warning message about your
|
||||||
|
FCGI application, saying that it was started. Something like:
|
||||||
|
[warn] FastCGI: server "/home/johndoe/LazarusFCGITest/helloworld" started...
|
||||||
|
|
||||||
|
2.2.6 Open your web browser and try to call your new FCGI application.
|
||||||
|
Example:
|
||||||
|
http://127.0.0.1/myfcgi/func1call
|
||||||
|
"myfcgi" is the ScriptAlias name specified for the FCGI application, and
|
||||||
|
func1call is the action name we want to call within our default web module.
|
||||||
|
If you have multiple web modules, you can enter the desired web module name
|
||||||
|
before the action name, for example:
|
||||||
|
http://127.0.0.1/myfcgi/webmodule1/func1call
|
||||||
|
|
||||||
|
If there is any problem, you can try and check the Apache error.log for clues.
|
||||||
|
|
||||||
|
===============================================================================
|
||||||
Loading…
Reference in New Issue
Block a user