web(六)---fastcgi再进阶(请求和响应)

浏览数：23 / 时间：2015年06月09日

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;
}