creersocket.c

linux 下socket 客户端和服务器

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

static struct sockaddr_in adresse;

int creerSocket(int type, int port, struct sockaddr_in *p_adresse) {
  int desc;
  socklen_t longueur = (socklen_t) sizeof(struct sockaddr_in);

  /* Creation de la socket */
  if ( (desc = socket(AF_INET, type, 0)) == -1) {
    perror("Creation de socket impossible");
    return -1;
  }

  /* Pr閜aration de l'adresse */
  adresse.sin_family = AF_INET;
  adresse.sin_addr.s_addr = htonl(INADDR_ANY);
  adresse.sin_port = htons(port);

  /* Attachement de la socket */
  if ( bind(desc, (struct sockaddr *)&adresse, longueur) == -1) {
    perror("Attachement de la socket impossible");
    close(desc);
    return -1;
  }

  /* R閏up閞ation de l'adresse effective d'attachement */
  if (p_adresse != NULL) {
    getsockname(desc, (struct sockaddr *)p_adresse, &longueur);
  }
  return desc;
}