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int handle = socket(AF_INET, SOCK_DGRAM, 0 ); // IPPROTO_UDP
if (handle < 0) {
perror("socket");
exit(1);
}
char packet_data[1024];
int opt_length = 0;
struct sockaddr_in servaddr;
memset(&servaddr, 0, sizeof(sockaddr_in));
servaddr.sin_family = AF_INET;
servaddr.sin_port = htons(161) ;
servaddr.sin_addr.s_addr = inet_addr("192.168.2.30");
bzero(&(servaddr.sin_zero), 8);
if ( bind( handle, (struct sockaddr*)&servaddr, sizeof(servaddr) ) == -1 ) {
perror("bind");
// exit(1);
}
perror("bind");
perror("setsockopt");
rc = setsockopt(handle, SOL_SOCKET, SO_REUSEADDR, &packet_data, sizeof(packet_data));
if (rc != 0)
{
perror("setsockopt");
}
perror("setsockopt");
if (connect(handle, (struct sockaddr*)&servaddr, sizeof(servaddr)) < 0 )
{
perror("connect");
}
perror("connect");
socklen_t lenght = sizeof(servaddr);
// while (1)
// {
int bytes;
while (1) {
if (sendto(handle, packet_data, strlen(packet_data), 0, (struct sockaddr *) &servaddr, sizeof(servaddr)) < 0) {
perror("sendto");
exit(1);
}
sleep(1);
while ((bytes = recv(handle, packet_data, 1024 , 0)) > 0) {
packet_data[bytes] = '\0';
printf("recv: %s\n", packet_data);
}
} |
