Thread: bind

why is the bind command always return -1 in this program

Code:

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include <sys/types.h>
                                                                                                              
int main(void) {
        int sv; /* Socket. */
        struct sockaddr_in info;
        int sinfo;
        const unsigned char ipnum[] = { 123, 2, 3, 4 };
                                                                                                              
        if((sv = socket(AF_INET, SOCK_STREAM, 0)) == -1) {
                fprintf(stderr, "Couldn't make sockets.\n");
                return -1;
        }
        memset(&info, 0, sizeof info);
        info.sin_family = AF_INET;
        info.sin_port = htons(9000);
        memcpy(&info.sin_addr.s_addr, &ipnum, 4);
        sinfo = sizeof info;
        if((bind(sv, (struct sockaddr *)&info, sinfo)) == -1) {
                fprintf(stderr, "Couldn't bind ipv4 to socket.\n");
                close(sv);
                return -1;
        }
        system("netstat --unix -p | grep \"test\"");
        close(sv);
        return 0;
}

yeah, i just did that and got ip out of range or something, so I changed to something that started with 127 and it worked. thanx.