Essentially I have a server that will be listening for sockets in other programs seeking a connection:

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include <sys/wait.h>
#include <signal.h>
#include <sys/ioctl.h>
#include <linux/netdevice.h>
#include <netinet/in.h>
#include <arpa/inet.h>

#define MAX_LEN 80   

int main(int argc, char *argv[]){
  int recvSocket, serverSocket;
  char buffer[1024];
  struct sockaddr_in serverAddr;
  struct sockaddr_storage serverStorage;
  socklen_t addr_size;
  char user[MAX_LEN];
  char pass[MAX_LEN];
  char name[MAX_LEN];
  char port[MAX_LEN];
  struct iovec iov[2];

  struct ifconf ifconf;
  struct ifreq ifr[50];

  if (2 != argc) {
           fprintf(stderr, "Usage: %s <port>\n", argv[0]);
               exit(1);
    }

  /*---- Create the socket. The three arguments are: ----*/
  /* 1) Internet domain 2) Stream socket 3) Default protocol (TCP in this case) */
  recvSocket = socket(PF_INET, SOCK_STREAM, 0);

  ifconf.ifc_buf = (char *) ifr;
  ifconf.ifc_len = sizeof ifr;

  if (ioctl(recvSocket, SIOCGIFCONF, &ifconf) == -1) {
    perror("ioctl");
    return 0;
  }

  char ip[INET_ADDRSTRLEN];
  struct sockaddr_in *s_in = (struct sockaddr_in *) &ifr[1].ifr_addr;

  if (!inet_ntop(AF_INET, &s_in->sin_addr, ip, sizeof(ip))) {
    perror("inet_ntop");
    return 0;
  }

  /*---- Configure settings of the server address struct ----*/
  /* Address family = Internet */
  serverAddr.sin_family = AF_INET;
  /* Set port number, using htons function to use proper byte order */
  serverAddr.sin_port = htons(atoi(argv[1]));
  /* Set IP address to localhost */
  serverAddr.sin_addr.s_addr = inet_addr(ip);
  /* Set all bits of the padding field to 0 */
  memset(serverAddr.sin_zero, '\0', sizeof serverAddr.sin_zero);  

  /*---- Bind the address struct to the socket ----*/
  bind(recvSocket, (struct sockaddr *) &serverAddr, sizeof(serverAddr));

  if(listen(recvSocket,5)==0)
    printf("Listening\n");
  else
    printf("Error\n");

  /*---- Accept call creates a new socket for the incoming connection ----*/
  addr_size = sizeof serverStorage;
  serverSocket = accept(recvSocket, (struct sockaddr *) &serverStorage, &addr_size);

Here, I am trying to get the IP of the computer in order to set it up the socket on this program. Later on, a client will be connecting to it, where it will be given the same address by the user (so no worries on that side).

It seems to work just fine, but I get the feeling I am doing extra steps that could be simplified. Does anyone have any idea if it could be so? I guided myself from this question and this article to create mine.