fastcgi c/c++ API 下载地址：https://github.com/FastCGI-Archives
先上example
#include <iostream>
#include "fcgio.h"
using namespace std;
int main(void) {
// Backup the stdio streambufs
streambuf * cin_streambuf = cin.rdbuf();
streambuf * cout_streambuf = cout.rdbuf();
streambuf * cerr_streambuf = cerr.rdbuf();
FCGX_Request request;
FCGX_Init();
FCGX_InitRequest(&request, 0, 0);
while (FCGX_Accept_r(&request) == 0) {
fcgi_streambuf cin_fcgi_streambuf(request.in);
fcgi_streambuf cout_fcgi_streambuf(request.out);
fcgi_streambuf cerr_fcgi_streambuf(request.err);
cin.rdbuf(&cin_fcgi_streambuf);
cout.rdbuf(&cout_fcgi_streambuf);
cerr.rdbuf(&cerr_fcgi_streambuf);
cout << "Content-type: text/html\r\n"
<< "\r\n"
<< "<html>\n"
<< " <head>\n"
<< " <title>Hello, World!</title>\n"
<< " </head>\n"
<< " <body>\n"
<< " <h1>Hello, World!</h1>\n"
<< " </body>\n"
<< "</html>\n";
// Note: the fcgi_streambuf destructor will auto flush
}
// restore stdio streambufs
cin.rdbuf(cin_streambuf);
cout.rdbuf(cout_streambuf);
cerr.rdbuf(cerr_streambuf);
return 0;
}
1.首先 initialize the FCGX library with FCGX_Init() 和initialize FCGX_Request with int FCGX_InitRequest(FCGX_Request *request, int sock, int flags);
int FCGX_InitRequest(FCGX_Request *request, int sock, int flags);
参数：
request是FCGX_Request指针
sock is a file descriptor returned by FCGX_OpenSocket() or 0 (default)
flags是 当指定sock时设为FCGI_FAIL_ON_INTR，默认0
返回值：成功返回0
2.FCGX_Accept_r阻塞接收循环接收fcgi request，_r版本是FCGX_Accept多线程安全版本
int FCGX_Accept_r(FCGX_Request *request);
参数: request FCGX_Request 指针
返回值：成功返回0
3.FCGX_Request结构体
typedef struct FCGX_Request {
int requestId; /* valid if isBeginProcessed */
int role;
FCGX_Stream *in;
FCGX_Stream *out;
FCGX_Stream *err;
char **envp;
/* Don't use anything below here */
struct Params *paramsPtr;
int ipcFd; /* < 0 means no connection */
int isBeginProcessed; /* FCGI_BEGIN_REQUEST seen */
int keepConnection; /* don't close ipcFd at end of request */
int appStatus;
int nWriters; /* number of open writers (0..2) */
int flags;
int listen_sock;
int detached;
} FCGX_Request;
在FCGX_Accept之前，为FCGX_Request分别给in，out和err分配streambuf
二、Nginx 配置
events {
worker_connections 1024;
}
http {
server {
listen 80;
server_name localhost;
location / {
fastcgi_pass 127.0.0.1:8000;
fastcgi_param GATEWAY_INTERFACE CGI/1.1;
fastcgi_param SERVER_SOFTWARE nginx;
fastcgi_param QUERY_STRING $query_string;
fastcgi_param REQUEST_METHOD $request_method;
fastcgi_param CONTENT_TYPE $content_type;
fastcgi_param CONTENT_LENGTH $content_length;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
fastcgi_param SCRIPT_NAME $fastcgi_script_name;
fastcgi_param REQUEST_URI $request_uri;
fastcgi_param DOCUMENT_URI $document_uri;
fastcgi_param DOCUMENT_ROOT $document_root;
fastcgi_param SERVER_PROTOCOL $server_protocol;
fastcgi_param REMOTE_ADDR $remote_addr;
fastcgi_param REMOTE_PORT $remote_port;
fastcgi_param SERVER_ADDR $server_addr;
fastcgi_param SERVER_PORT $server_port;
fastcgi_param SERVER_NAME $server_name;
}
}
}
Nginx 在80端口监听http服务，把请求发送给 在端口8000监听的fastcgi进程
三、运行代码
# run nginx using the provided configuration sudo nginx -c <path to nginx.conf> # compile hello_world g++ main_v1.cpp -lfcgi++ -lfcgi -o hello_world # spawn the fcgi app on port 8000 with no fork spawn-fcgi -p 8000 -n hello_world
或
spawn-fcgi -a 127.0.0.1 -p 8088 -f hello_world
1.先启动nginx 服务
2.编译fastcgi程序，注意加链接库 fcgi++和fcgi
3.运行spwan-fcgi 指定可执行程序