/* UDP send command */
void sixlowapp_udp_send(ipv6_addr_t *dest, uint16_t port, char *payload, size_t len)
{
int sock;
sockaddr6_t sa;
int bytes_sent;
sock = socket_base_socket(PF_INET6, SOCK_DGRAM, IPPROTO_UDP);
if (-1 == sock) {
printf("Error Creating Socket!");
return;
}
memset(&sa, 0, sizeof(sa));
sa.sin6_family = AF_INET;
memcpy(&sa.sin6_addr, dest, 16);
sa.sin6_port = HTONS(port);
printf("Trying to send %i bytes to %s:%" PRIu16 "\n", len,
ipv6_addr_to_str(addr_str, IPV6_MAX_ADDR_STR_LEN, dest), port);
bytes_sent = socket_base_sendto(sock, payload, len, 0, &sa, sizeof(sa));
if (bytes_sent < 0) {
printf("Error sending packet!\n");
}
else {
printf("Successful deliverd %i bytes over UDP to %s to 6LoWPAN\n",
bytes_sent, ipv6_addr_to_str(addr_str, IPV6_MAX_ADDR_STR_LEN,
dest));
}
socket_base_close(sock);
}
/* UDP send command */
void udp_send(int argc, char **argv)
{
int sock;
sockaddr6_t sa;
ipv6_addr_t ipaddr;
int bytes_sent;
int address;
char text[5];
if (argc != 3) {
printf("usage: send <addr> <text>\n");
return;
}
address = atoi(argv[1]);
strncpy(text, argv[2], sizeof(text));
text[sizeof(text) - 1] = 0;
sock = socket_base_socket(PF_INET6, SOCK_DGRAM, IPPROTO_UDP);
if (-1 == sock) {
printf("Error Creating Socket!");
return;
}
memset(&sa, 0, sizeof(sa));
if (address) {
ipv6_addr_init(&ipaddr, 0xabcd, 0x0, 0x0, 0x0, 0x0, 0x00ff, 0xfe00, (uint16_t)address);
}
else {
ipv6_addr_set_all_nodes_addr(&ipaddr);
}
sa.sin6_family = AF_INET;
memcpy(&sa.sin6_addr, &ipaddr, 16);
sa.sin6_port = HTONS(SERVER_PORT);
bytes_sent = socket_base_sendto(sock, (char *)text,
strlen(text) + 1, 0, &sa,
sizeof(sa));
if (bytes_sent < 0) {
printf("Error sending packet!\n");
}
else {
printf("Successful deliverd %i bytes over UDP to %s to 6LoWPAN\n",
bytes_sent, ipv6_addr_to_str(addr_str, IPV6_MAX_ADDR_STR_LEN,
&ipaddr));
}
socket_base_close(sock);
}
kernel_pid_t nhdp_start(void)
{
if (nhdp_pid == KERNEL_PID_UNDEF) {
/* Init destination address for NHDP's packets */
sa_bcast.sin6_family = AF_INET6;
sa_bcast.sin6_port = HTONS(MANET_PORT);
ipv6_addr_set_all_nodes_addr(&sa_bcast.sin6_addr);
/* Configure sending/receiving UDP socket */
sock_rcv = socket_base_socket(PF_INET6, SOCK_DGRAM, IPPROTO_UDP);
/* Start the NHDP thread */
nhdp_pid = thread_create(nhdp_stack, sizeof(nhdp_stack), THREAD_PRIORITY_MAIN - 1,
CREATE_STACKTEST, _nhdp_runner, NULL, "NHDP");
}
return nhdp_pid;
}
/* UDP server thread */
void *sixlowapp_udp_server_loop(void *arg)
{
(void) arg;
sockaddr6_t sa;
char buffer_main[UDP_BUFFER_SIZE];
uint32_t fromlen;
int sock;
fromlen = sizeof(sa);
while (1) {
while(!sixlowapp_netcat_listen_port) {
thread_sleep();
}
sock = socket_base_socket(PF_INET6, SOCK_DGRAM, IPPROTO_UDP);
memset(&sa, 0, sizeof(sa));
sa.sin6_family = AF_INET;
sa.sin6_port = HTONS(sixlowapp_netcat_listen_port);
if (-1 == socket_base_bind(sock, &sa, sizeof(sa))) {
printf("Error bind failed!\n");
socket_base_close(sock);
sixlowapp_netcat_listen_port = 0;
continue;
}
printf("Listening for incoming UDP connection at port %" PRIu16 "\n", sixlowapp_netcat_listen_port);
int32_t recsize = socket_base_recvfrom(sock, (void *)buffer_main, UDP_BUFFER_SIZE, 0, &sa, &fromlen);
if (recsize < 0) {
printf("ERROR: recsize < 0!\n");
}
printf("UDP packet received, payload: %s\n", buffer_main);
socket_base_close(sock);
sixlowapp_netcat_listen_port = 0;
}
return NULL;
}
static void *init_udp_server(void *arg)
{
(void) arg;
sockaddr6_t sa;
char buffer_main[UDP_BUFFER_SIZE];
int32_t recsize;
uint32_t fromlen;
int sock = socket_base_socket(PF_INET6, SOCK_DGRAM, IPPROTO_UDP);
memset(&sa, 0, sizeof(sa));
sa.sin6_family = AF_INET;
sa.sin6_port = HTONS(SERVER_PORT);
fromlen = sizeof(sa);
if (-1 == socket_base_bind(sock, &sa, sizeof(sa))) {
printf("Error bind failed!\n");
socket_base_close(sock);
return NULL;
}
while (1) {
recsize = socket_base_recvfrom(sock, (void *)buffer_main, UDP_BUFFER_SIZE, 0, &sa, &fromlen);
if (recsize < 0) {
printf("ERROR: recsize < 0!\n");
}
printf("UDP packet received, payload: %s\n", buffer_main);
}
socket_base_close(sock);
return NULL;
}
