实战 FastCGI

2.3 安装 FastCGI 开发套件

1. 下载 fcgi-devkit-2.1.tar.gz 并且解开：
$ gunzip -c fcgi-devkit-2.1.tar.gz | tar xvf -
2. 编译
$ cd fcgi-devkit-2.1
$ ./configure
$ make
3. 将 C 的标头档 (header file) 及函式库 (library) 安装至系统：
$ cp -rp include /usr/local/include/fastcgi
$ cp libfcgi/libfcgi.a /usr/local/lib

2.4 测试 FastCGI
在 fcgi-devkit 套件中内含一个简单的 FastCGI 范例程序 - echo.c，我们用它来做测试系统是否安装正确。直接把已经编译好的 echo.fcg 复制到预设放置 FastCGI 程序的目录下：

$ cd fcgi-devkit-2.1/example
$ cp echo.fcg /usr/local/www/fcgi-bin

现在赶快用浏览器连到 http://localhost/fcgi-bin/echo.fcg 看看，如果看到以下结果表示您大功告成啦：

FastCGIecho
Requestnumber1,ProcessID:1013

Nodatafromstandardinput.

Requestenvironment:
FCGI_ROLE=RESPONDER
DOCUMENT_ROOT=/usr/local/apache/htdocs
HTTP_ACCEPT=text/html,text/plain,application/applefile,application/x-metamai
l-patch,sun-deskset-message,mail-file,default,postscript-file,audio-file,
x-sun-attachment,text/enriched,text/richtext,application/andrew-inset,x-be2
,application/postscript,message/external-body,message/partial,application/p
gp,application/pgp,video/mpeg,video/*,image/*,audio/*,audio/mod,text/sgm
l,video/mpeg,image/jpeg,image/tiff,image/x-rgb,image/png,image/x-xbitmap,
image/x-xbm,image/gif,application/postscript,*/*;q=0.01
HTTP_ACCEPT_ENCODING=gzip,compress
HTTP_ACCEPT_LANGUAGE=en
HTTP_HOST=localhost
HTTP_NEGOTIATE=trans
HTTP_USER_AGENT=Lynx/2.8.1pre.9libwww-FM/2.14
PATH=/usr/local/bin:/bin:/usr/bin:/usr/X11R6/bin:/usr/sbin:/opt/kde/bin:/home/m
yhsu/bin:/usr/X11R6/bin:/usr/sbin:/opt/kde/bin:/usr/X11R6/bin:/usr/sbin:/opt/kd
e/bin
REMOTE_ADDR=127.0.0.1
REMOTE_PORT=1024
SCRIPT_FILENAME=/usr/local/www/fcgi-bin/echo.fcg
SERVER_ADMIN=myhsu@localhost.localdomain
SERVER_NAME=localhost.localdomain
SERVER_PORT=80
SERVER_SIGNATURE=

Apache/1.3.6Serveratlocalhost.localdomainPort80

SERVER_SOFTWARE=Apache/1.3.6(Unix)mod_fastcgi/2.2.2
UNIQUE_ID=N1ptln8AAAEAAAPdDRkGATEWAY_INTERFACE=CGI/1.1
SERVER_PROTOCOL=HTTP/1.0REQUEST_METHOD=GETQUERY_STRING=
REQUEST_URI=/fcgi-bin/echo.fcgSCRIPT_NAME=/fcgi-bin/echo.fcg

Initialenvironment:

请注意在以上程序所显示的 Request number 和 Process ID 这两个变量，当我们继续重新加载这支程序时，Request number 会一直累加而 Process ID 的值都不会改变。这表示这支程序在第一次激活之后就一直执行着没有结束，而且在每次联机请求中所参照到的变量空间是相同的 (所以 Request number 会不断加一)。
到此为止，我们已经成功建立起一个可供发展 FastCGI 应用程序的环境及执行 FastCGI 应用程序的网站执行平台。

2.5 安装 FCGI 模块 for Perl
如果要使用 Perl 来撰写 FastCGI 的程序，必须安装 FCGI.pm 这个模块，安装的方法如下：

1. 下载 FCGI-0.45.tar.gz 并且解开
$ gunzip -c FCGI-0.45.tar.gz | tar xvf -
2. 编译及安装
$ perl Makefile.PL
$ make
$ make install
3. 测试
$ cp echo.fpl /usr/local/www/fcgi-bin
$ lynx http://localhost/fcgi-bin/echo.fpl
如果顺利的话，应该会看到如下的结果：
FastCGI echo (Perl)
Request number 1
No data from standard input.
Request environment:

DOCUMENT_ROOT=/usr/local/apache/htdocs
FCGI_ROLE=RESPONDER
GATEWAY_INTERFACE=CGI/1.1
HTTP_ACCEPT=text/html, text/plain, application/applefile, application/x-metamai
l-patch, sun-deskset-message, mail-file, default, postscript-file, audio-file,
x-sun-attachment, text/enriched, text/richtext, application/andrew-inset, x-be2
, application/postscript, message/external-body, message/partial, application/p
gp, application/pgp, video/mpeg, video/*, image/*, audio/*, audio/mod, text/sgm
l, video/mpeg, image/jpeg, image/tiff, image/x-rgb, image/png, image/x-xbitmap,
image/x-xbm, image/gif, application/postscript, */*;q=0.01
HTTP_ACCEPT_ENCODING=gzip, compress
HTTP_ACCEPT_LANGUAGE=en
HTTP_HOST=localhost
HTTP_NEGOTIATE=trans
HTTP_USER_AGENT=Lynx/2.8.1pre.9 libwww-FM/2.14
PATH=/usr/local/bin:/bin:/usr/bin:/usr/X11R6/bin:/usr/sbin:/opt/kde/bin:/home/m
yhsu/bin:/usr/X11R6/bin:/usr/sbin:/opt/kde/bin:/usr/X11R6/bin:/usr/sbin:/opt/kd
e/bin
QUERY_STRING=
REMOTE_ADDR=127.0.0.1
REMOTE_PORT=1427
REQUEST_METHOD=GET
REQUEST_URI=/fcgi-bin/echo.fpl
SCRIPT_FILENAME=/usr/local/www/fcgi-bin/echo.fpl
SCRIPT_NAME=/fcgi-bin/echo.fpl
SERVER_ADMIN=myhsu@localhost.localdomain
SERVER_NAME=localhost.localdomain
SERVER_PORT=80
SERVER_PROTOCOL=HTTP/1.0
SERVER_SIGNATURE=