socket11_1.c

Linux网络编程配套源代码 不过看的时候最好和书籍一起配套看

/* 接收方代码 */
#include <sys/types.h>
#include <sys/socket.h>
#include <errno.h>

struct sockaddr myname;
struct sockaddr from_name;
char buf[80];
main()
{
  int   sock;
  int   fromlen, cnt;
  sock = socket(AF_UNIX, SOCK_DGRAM, 0);
  if (sock < 0) {
    printf("socket failure %d\n", errno);
    exit(1);
  }
  myname.sa_family = AF_UNIX;
  strcpy(myname.sa_data, "/tmp/tsck");
  if (bind(sock, &myname, strlen(myname.sa_data) +
        sizeof(myname.sa_family)) < 0) {
    printf("bind failure %d\n", errno);
    exit(1);
  }				/* 建立套接字 */
  cnt = recvfrom(sock, buf, sizeof(buf),
    0, &from_name, &fromlen);
  if (cnt < 0) {
    printf("recvfrom failure %d\n", errno);
    exit(1);
  }				/* 调用recvfrom函数从套接字接收数据 */
  buf[cnt] = '\0';  /* 添加字符串结束标志 */
  from_name.sa_data[fromlen] = '\0';
  printf("'%s' received from %s\n",
    buf, from_name.sa_data);
}