So i did this simple exemple : I send a http request from a client PC that execute a php script on raspberry Pi to count the number of files in a directory then a second request that execute a php script to delete them and then the first script again to ensure that it worked.
The problem is that the second time I ask for the number of files, it return the result of the first time I called the function, also the script to delete the files worked. I used wireshark on the network and I actually see that the second request to count the file is not send, I don't understand why, is it my code ? or from the http protocole ?
Here is my code, there is only the 2 requests to count the number of ADL files, only with this i can see on wireshark that just on request is send :
#include "MA_DLLCPP.h"
#include <windows.h>
#include <stdio.h>
#include <stdlib.h>
#include <wininet.h>
#include <string.h>
int main(int argc, char* argv[])
{
int error = 0;
char* result = 0;
DWORD dwBytes;
char ch [100] = "0";
char ligne [100] = "";
char ligne1 [100] = "";
HINTERNET Initialize,Connection,File;
//Création de la session internet
Initialize = InternetOpenA("pi",INTERNET_OPEN_TYPE_DIRECT,"","",0);
if(Initialize == NULL) return 1;
//Connection HTTP serveur-client
Connection = InternetConnectA(Initialize,"192.168.1.2",INTERNET_DEFAULT_HTTP_PORT,
NULL,NULL,INTERNET_SERVICE_HTTP,0,0);
strcat(ligne, "IHM_DLD/services/");
strcat(ligne, "getADL");
strcat(ligne, ".php");
//Création de la requete HTTP
File = HttpOpenRequestA(Connection, "GET",ligne,NULL,NULL,NULL,0,0);
if(File == NULL) return 3;
//Envoi de la requete HTTP
if(HttpSendRequestA(File,NULL,0,NULL,0) == FALSE) return 4;
//Lecture de la réponse du serveur
if(InternetReadFile(File,&ch,1,&dwBytes) == FALSE) return 5;
while(InternetReadFile(File,&ch,1,&dwBytes))
{
// cas d'erreur en cas d'absence de retour
if(dwBytes != 1) break;
printf("%s",ch);
}
InternetCloseHandle(File);
InternetCloseHandle(Connection);
InternetCloseHandle(Initialize);
//Connection HTTP serveur-client
Connection = InternetConnectA(Initialize,"192.168.1.2",INTERNET_DEFAULT_HTTP_PORT,
NULL,NULL,INTERNET_SERVICE_HTTP,0,0);
//Création de la requete HTTP
File = HttpOpenRequestA(Connection, "GET",ligne,NULL,NULL,NULL,0,0);
if(File == NULL) return 3;
//Envoi de la requete HTTP
if(HttpSendRequestA(File,NULL,0,NULL,0) == FALSE) return 4;
//Lecture de la réponse du serveur
if(InternetReadFile(File,&ch,1,&dwBytes) == FALSE) return 5;
while(InternetReadFile(File,&ch,1,&dwBytes))
{
// cas d'erreur en cas d'absence de retour
if(dwBytes != 1) break;
printf("%s",ch);
}
InternetCloseHandle(File);
InternetCloseHandle(Connection);
InternetCloseHandle(Initialize);
