Web (vii)---FASTCGI Advanced (Request and response) Official example

In the fast-cgi source code of the examples folder there are many examples, the following gives the Echo example, the compilation run method above several sections.

fast-cgi API for Google.

Http://fossies.org/dox/fcgi-2.4.0/fcgiapp_8h.html#a32f6950798054a70404ce24c22ea28b9

Echo-cpp.cpp

#include <stdlib.h>#ifdef _win32#include<process.h>#else#include<unistd.h>extern Char**environ;#endif#include"fcgio.h"#include"fcgi_config.h"  //Have_iostream_withassign_streambufusing namespacestd;//Maximum number of bytes allowed to is read from stdinStatic ConstUnsignedLongStdin_max =1000000;Static voidPenv (Const Char*Const*envp) {cout<<"<pre>\n";  for(; *envp; + +)envp) {cout<< *ENVP <<"\ n"; } cout<<"</pre>\n";}Static LongGstdin (Fcgx_request * Request,Char**content) {    Char* Clenstr = Fcgx_getparam ("content_length", request->envp); unsignedLongClen =Stdin_max; if(clenstr) {Clen= Strtol (Clenstr, &clenstr,Ten); if(*clenstr) {Cerr<<"can ' t parse \ "Content_length="<< Fcgx_getparam ("content_length", request->envp)<<"\ "\ n"; Clen=Stdin_max; }        //*always* put a cap on the amount of data so would be read        if(Clen > Stdin_max) clen =Stdin_max; *content =New Char[Clen]; Cin.read (*content, Clen); Clen=Cin.gcount (); }    Else    {        //*never* Read stdin when content_length is missing or unparsable*content =0; Clen=0; }    //Chew up to remaining stdin-this shouldn ' t be necessary//But is because mod_fastcgi doesn ' t handle it correctly. //ignore () doesn ' t set the EOF bit in some versions of Glibc++//So use Gcount () instead of EOF () ...     DoCin.ignore (1024x768); while(Cin.gcount () = =1024x768); returnClen;}intMain (void){    intCount =0; LongPID =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)    {        //Note that the default bufsize (0) would cause the use of iostream//methods that require positioning (such as peek (), Seek (),//Unget () and putback ()) to-fail (in favour of more efficient IO).Fcgi_streambuf Cin_fcgi_streambuf (Request.inch); Fcgi_streambuf cout_fcgi_streambuf (Request. out); Fcgi_streambuf cerr_fcgi_streambuf (request.err);#ifHave_iostream_withassign_streambufCin= &Cin_fcgi_streambuf; cout= &Cout_fcgi_streambuf; Cerr= &Cerr_fcgi_streambuf;#elseCin.rdbuf (&cin_fcgi_streambuf); Cout.rdbuf (&cout_fcgi_streambuf); Cerr.rdbuf (&cerr_fcgi_streambuf);#endif        //Although FastCGI supports writing before reading,//many HTTP clients (browsers) don ' t support it//The connection deadlocks until a timeout expires!).        Char*content; unsignedLongClen = Gstdin (&request, &content); cout<<"content-type:text/html\r\n"                "\ r \ n"                "<title>echo-cpp</title>\n"                ""                ""<< PID <<""                ""<< ++count <<""; cout<<"";        Penv (REQUEST.ENVP); cout<<"";        Penv (environ); cout<<""<<Clen; if(Clen = = Stdin_max) cout <<"(Stdin_max)"; cout<<"bytes"; if(Clen) cout.write (content, Clen); if(content) Delete []content; //If the output streambufs had Non-zero bufsizes and//were constructed outside of the accept loop (i.e. //their destructor won ' t be called here), they would//There is a flushed here.    }#ifHave_iostream_withassign_streambufCin=Cin_streambuf; cout=Cout_streambuf; Cerr=Cerr_streambuf;#elsecin.rdbuf (CIN_STREAMBUF);    Cout.rdbuf (COUT_STREAMBUF); Cerr.rdbuf (CERR_STREAMBUF);#endif    return 0;}

Web (vii)---FASTCGI Advanced (Request and response) Official example