8-6 epollサンプルへのデータ送信プログラム
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
int
main()
{
int sock;
struct sockaddr_in dest1, dest2;
char buf[1024];
sock = socket(AF_INET, SOCK_DGRAM, 0);
dest1.sin_family = AF_INET;
dest2.sin_family = AF_INET;
/* "127.0.0.1"の部分は必要に応じて変更して下さい */
inet_pton(AF_INET, "127.0.0.1", &dest1.sin_addr.s_addr);
inet_pton(AF_INET, "127.0.0.1", &dest2.sin_addr.s_addr);
dest1.sin_port = htons(11111);
dest2.sin_port = htons(22222);
snprintf(buf, sizeof(buf), "data to port 11111\n");
sendto(sock,
buf, strlen(buf), 0, (struct sockaddr *)&dest1, sizeof(dest1));
snprintf(buf, sizeof(buf), "data to port 22222\n");
sendto(sock,
buf, strlen(buf), 0, (struct sockaddr *)&dest2, sizeof(dest2));
close(sock);
return 0;
}