udp_send.c

来自「ARM9200+嵌入式linux下的网络驱动」· C语言 代码 · 共 35 行

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>

int port = 6789;

int main()
{
  int socket_descriptor;
  int iter = 0;
  char buff[80];
  struct sockaddr_in address;

  bzero(&address,sizeof(address));
  address.sin_family = AF_INET;
  address.sin_addr.s_addr = inet_addr("192.168.0.200");
  address.sin_port=htons(port);

  socket_descriptor = socket(AF_INET, SOCK_DGRAM, 0);

  for(iter = 0; iter<=20; iter++)
    {
      sprintf(buff,"data packet with ID %d\n",iter);
      sendto(socket_descriptor,buff,sizeof(buff),0,\
	     (struct sockaddr *)&address,sizeof(address));
    }

  close(socket_descriptor);
  exit(0);
}