1 #include <sys/socket.h>
5 #include <netinet/in.h>
9 int main(int argc, const char *argv[])
14 sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP);
16 perror("Failed to create socket");
20 struct sockaddr_in saddr;
21 memset(&saddr, 0, sizeof(saddr));
23 inet_pton(AF_INET, "192.168.130.128", &saddr.sin_addr.s_addr);
25 saddr.sin_family = AF_INET;
27 if (bind(sock, (struct sockaddr *) &saddr, sizeof(saddr)) < 0) {
28 perror("Failed to bind socket");
34 sprintf(buf, "Buffer");
37 struct sockaddr_in to;
39 memset(&msg, 0, sizeof(msg));
40 memset(&iov, 0, sizeof(iov));
41 memset(&to, 0, sizeof(to));
43 iov[0].iov_base = buf;
44 iov[0].iov_len = sizeof(buf);
46 inet_pton(AF_INET, "192.168.130.129", &to.sin_addr.s_addr);
47 to.sin_port = htons(100);
48 to.sin_family = AF_INET;
53 msg.msg_namelen = sizeof(to);
57 struct timeval tv1, tv2;
58 gettimeofday(&tv1, NULL);
59 for (i = 0; i < 10000; i++) {
60 ret = sendmsg(sock, &msg, 0);
62 perror("Failed to send on socket");
66 gettimeofday(&tv2, NULL);
68 printf("diff=%ld\n", (tv2.tv_sec - tv1.tv_sec) * 1000 + (tv2.tv_usec - tv1.tv_usec) / 1000);
70 if (close(sock) < 0) {
71 perror("Failed to close socket");