1，nginx.conf：
http {
    ......
   server {
    ......
        location /fcgi {
            fastcgi_pass 127.0.0.1:8181;
            include fastcgi_param;
        }
    ......
    }
    ......
}

2，fcgi程序empty.c
#include "fcgi_config.h"                                                                                                                                                                             
#include <stdlib.h>                                                                                                                                                                                   
#include <unistd.h>                                                                                                                                                                                   
#include "fcgi_stdio.h"

int main ()                                                                                                                                                                                          
{                                                                                                                                                                                                     
                                                                                                                                                                                                      
    while (FCGI_Accept() >= 0) {                                                                                                                                                                      
        printf("\r\n"                                                                                                                                                                                 
               "\r\n");               //两个空行是必须的，用于分隔http头和体，否则会报50x错误且fast进程退出。
    } /* while */                                                                                                                                                                                     
                                                                                                                                                                                                      
    return 0;                                                                                                                                                                                         
}

３，启动fastcgi
spawn-fcgi -a 127.0.0.1 -p 8181 ./empty

4，在firefox中打开
http://localhost/fcgi/