Multicast server c and .bat file to open it - c

Question

Recently I have been struggling with servers for the first time:
The case is: I have a software (Motive from Optitrack) that provides a streaming of data via multicasting.
I have tried to modify a previous program, it can be build but I have some issues to solve:
1º- I want a .bat file to automatically open the server with the argc parameters, I have made one, but it doesn't work. The code is at the end.
2º When executing the .exe file, the console bips for a moment and closes. I suppose that it is because it returns -1, but maybe there is some error in the code.
I'm on Windows 10, using Code::Blocks and Gcc compiler.
The server code is:
#include <sys/types.h> /* for type definitions */
#include <winsock2.h> /* for win socket API calls */
#include <ws2tcpip.h> /* for win socket structs */
#include <stdio.h> /* for printf() and fprintf() */
#include <stdlib.h> /* for atoi() */
#include <string.h> /* for strlen() */
#define MAX_LEN 1024 /* maximum receive string size */
#define MIN_PORT 1051 /* minimum port allowed */
#define MAX_PORT 1051 /* maximum port allowed */
#define NUM_RIG_OBJ 2
int main(int argc, char *argv[]) {
int sock; /* socket descriptor */
int flag_on = 1; /* socket option flag */
struct sockaddr_in mc_addr; /* socket address structure */
char recv_str[MAX_LEN+1]; /* buffer to receive string */
int recv_len, ID ; /* length of string received */
struct ip_mreq mc_req; /* multicast request structure */
char* mc_addr_str ; /* multicast IP address */
unsigned short mc_port; /* multicast port */
struct sockaddr_in from_addr; /* packet source */
unsigned int from_len; /* source addr length */
WSADATA wsaData; /* Windows socket DLL structure */
float xa,ya,za,qx,qy,qz,qw;
/* validate number of arguments */
if (argc != 3) {
fprintf(stderr,
"Usage: %s <Multicast IP> <Multicast Port>\n",
argv[0]);
exit(1);
}
mc_addr_str = argv[1]; /* arg 1: multicast ip address */
mc_port = atoi(argv[2]); /* arg 2: multicast port number */
/* validate the port range */
if ((mc_port < MIN_PORT) || (mc_port > MAX_PORT)) {
fprintf(stderr, "Invalid port number argument %d.\n",
mc_port);
fprintf(stderr, "Valid range is between %d and %d.\n",
MIN_PORT, MAX_PORT);
exit(1);
}
/* Load Winsock 2.0 DLL */
if (WSAStartup(MAKEWORD(2, 0), &wsaData) != 0) {
fprintf(stderr, "WSAStartup() failed");
exit(1);
}
/* create socket to join multicast group on */
if ((sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0) {
perror("socket() failed");
exit(1);
}
/* set reuse port to on to allow multiple binds per host */
if ((setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (char*)&flag_on,
sizeof(flag_on))) < 0) {
perror("setsockopt() failed");
exit(1);
}
/* construct a multicast address structure */
memset(&mc_addr, 0, sizeof(mc_addr));
mc_addr.sin_family = AF_INET;
mc_addr.sin_addr.s_addr = htonl(INADDR_ANY);
mc_addr.sin_port = htons(mc_port);
/* bind to multicast address to socket */
if ((bind(sock, (struct sockaddr *) &mc_addr,
sizeof(mc_addr))) < 0) {
perror("bind() failed");
exit(1);
}
/* construct an IGMP join request structure */
mc_req.imr_multiaddr.s_addr = inet_addr(mc_addr_str);
mc_req.imr_interface.s_addr = htonl(INADDR_ANY);
/* send an ADD MEMBERSHIP message via setsockopt */
if ((setsockopt(sock, IPPROTO_IP, IP_ADD_MEMBERSHIP,
(char*) &mc_req, sizeof(mc_req))) < 0) {
perror("setsockopt() failed");
exit(1);
}
int md=recv_str[0];
char *ptr = recv_str;
float x[NUM_RIG_OBJ]= {0};
float y[NUM_RIG_OBJ]= {0};
float z[NUM_RIG_OBJ]= {0};
float q1[NUM_RIG_OBJ]= {0};
float q2[NUM_RIG_OBJ]= {0};
float q3[NUM_RIG_OBJ]= {0};
float q4[NUM_RIG_OBJ]= {0};
for (;;) { /* loop forever */
/* clear the receive buffers & structs */
memset(recv_str, 0, sizeof(recv_str));
from_len = sizeof(from_addr);
memset(&from_addr, 0, from_len);
/* block waiting to receive a packet */
if ((recv_len = recvfrom(sock, recv_str, MAX_LEN, 0,
(struct sockaddr*)&from_addr, &from_len)) < 0) {
perror("recvfrom() failed");
exit(1);
}
/* output received string */
printf("Received %d bytes from %s: ", recv_len,
inet_ntoa(from_addr.sin_addr));
printf("%s", recv_str);
// rigid body pos/ori
if (md==7){
for (int i=0;i<NUM_RIG_OBJ;i++){
memcpy(&ID, ptr, 4); ptr += 4;
memcpy(&xa, ptr, 4); ptr += 4;
memcpy(&ya, ptr, 4); ptr += 4;
memcpy(&za, ptr, 4); ptr += 4;
memcpy(&qx, ptr, 4); ptr += 4;
memcpy(&qy, ptr, 4); ptr += 4;
memcpy(&qz, ptr, 4); ptr += 4;
memcpy(&qw, ptr, 4); ptr += 4;
printf("ID : %d\n", ID);
printf("pos: [%3.4f,%3.4f,%3.4f]\n", xa,ya,za);
printf("ori: [%3.4f,%3.4f,%3.4f,%3.4f]\n", qx,qy,qz,qw);
x[i]=xa;
y[i]=ya;
z[i]=za;
q1[i]=qx;
q2[i]=qy;
q3[i]=qz;
q4[i]=qw;
ptr = recv_str;
memcpy(ptr, &i, 4); ptr += 4;
memcpy(ptr, &x[i], 4); ptr += 4;
memcpy(ptr, &y[i], 4); ptr += 4;
memcpy(ptr, &z[i], 4); ptr += 4;
memcpy(ptr, &q1[i], 4); ptr += 4;
memcpy(ptr, &q2[i], 4); ptr += 4;
memcpy(ptr, &q3[i], 4); ptr += 4;
memcpy(ptr, &q4[i], 4); ptr += 4;
}
}
/* send a DROP MEMBERSHIP message via setsockopt */
if ((setsockopt(sock, IPPROTO_IP, IP_DROP_MEMBERSHIP,
(void*) &mc_req, sizeof(mc_req))) < 0) {
perror("setsockopt() failed");
exit(1);
}
closesocket(sock);
WSACleanup(); /* Cleanup Winsock */
}
return 0;
}
and the .bat file is
#echo off
echo Opening server...
cd C:\Users\Optitrack\Desktop\Conrado\mcreceive
start mcreceive.exe 259.44.99.107 1051
Any piece of advice would be much appreciated.
thank you