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web(六)---fastcgi再进阶(请求和响应)

接上节, 上节只有响应---cout,  本节获取地址栏的QUERY_STRING, 然后响应.

 

一. req_resp.cpp.

#include <stdlib.h>#include <string.h>#include <unistd.h>#include "fcgio.h"#include "fcgi_config.h"using namespace std;int main (void){    int count = 0;    long pid = getpid();    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"                "<H4>PID: " << pid << "</H4>\n"                "<H4>Request Number: " << ++count << "</H4>\n";        cout << "<H4>Request Environment</H4>\n";        for(int i = 0; request.envp[i]; ++i)        {            char* findQueryStr = NULL;            findQueryStr = strstr(request.envp[i], "QUERY_STRING");            if (findQueryStr)            {                cout << request.envp[i] << \n;            }        }    }    cin.rdbuf(cin_streambuf);    cout.rdbuf(cout_streambuf);    cerr.rdbuf(cerr_streambuf);    return 0;}

 

 

二. 编译运行.

#g++ -o req_resp req_resp.cpp -I /usr/local/include -L /usr/local/lib -lfcgi -lstdc++ -lfcgi++

#./req_resp

若编译或运行时出错(一般是库问题), 参考上几节解决办法.

 

三. 将cgi拷贝到ngix(目标路径没有则手动创建)

cp ***/req_resp  /usr/local/nginx/cgibin

 

四. 启动Spawn-fcgi.

/usr/local/nginx/sbin/spawn-fcgi -a 127.0.0.1 -p 8088 -f /usr/local/nginx/cgibin/req_resp

 

五. 访问.

注: python index.py已经运行的情况下.

浏览器地址栏:    localhost/req_resp.cgi?his_is_from_brower_input&hello=1&world=2

 

注意显示的QUERY_STRING就是地址栏问号后的内容.

浏览器显示为:

PID: 4072

Request Number: 2

Request Environment

QUERY_STRING=this_is_from_brower_input&hello=1&world=2

 

web(六)---fastcgi再进阶(请求和响应)