int main(void)
{
char alias[] = "temp";
char cik[] = "a32c85ba9dda45823be416246cf8b433baa068d7";
char host[] = "coap.exosite.com";
char port[] = "5683";
srand(time(NULL));
// CoAP Message Setup
#define MSG_BUF_LEN 64
uint8_t msg_send_buf[MSG_BUF_LEN];
coap_pdu msg_send = {msg_send_buf, 0, 64};
uint8_t msg_recv_buf[MSG_BUF_LEN];
coap_pdu msg_recv = {msg_recv_buf, 0, 64};
uint16_t message_id_counter = rand();
// Socket to Exosite
int remotesock;
size_t bytes_sent;
ssize_t bytes_recv;
int rv;
struct addrinfo exohints, *servinfo, *q;
memset(&exohints, 0, sizeof exohints);
exohints.ai_family = AF_UNSPEC;
exohints.ai_socktype = SOCK_DGRAM;
exohints.ai_flags = AI_PASSIVE;
if ((rv = getaddrinfo(host, port, &exohints, &servinfo)) != 0) {
fprintf(stderr, "getaddrinfo: %s\n", gai_strerror(rv));
return 1;
}
// loop through all the results and make a socket
for(q = servinfo; q != NULL; q = q->ai_next) {
if ((remotesock = socket(q->ai_family, q->ai_socktype, q->ai_protocol)) == -1) {
perror("bad socket");
continue;
}
break;
}
if (q == NULL) {
fprintf(stderr, "Failed to Bind Socket\n");
return 2;
}
for (;;)
{
printf("--------------------------------------------------------------------------------\n");
// Build Message
coap_init_pdu(&msg_send);
//memset(msg_send, 0, msg_send_len);
coap_set_version(&msg_send, COAP_V1);
coap_set_type(&msg_send, CT_CON);
coap_set_code(&msg_send, CC_GET); // or POST to write
coap_set_mid(&msg_send, message_id_counter++);
coap_set_token(&msg_send, rand(), 2);
coap_add_option(&msg_send, CON_URI_PATH, (uint8_t*)"1a", 2);
coap_add_option(&msg_send, CON_URI_PATH, (uint8_t*)alias, strlen(alias));
coap_add_option(&msg_send, CON_URI_QUERY, (uint8_t*)cik, strlen(cik));
// to write, set payload:
//coap_set_payload(msg_send, &msg_send_len, MSG_BUF_LEN, (uint8_t*)"99", 2);
// Send Message
if ((bytes_sent = sendto(remotesock, msg_send.buf, msg_send.len, 0, q->ai_addr, q->ai_addrlen)) == -1){
fprintf(stderr, "Failed to Send Message\n");
return 2;
}
printf("Sent.\n");
coap_pretty_print(&msg_send);
// Wait for Response
bytes_recv = recvfrom(remotesock, (void *)msg_recv.buf, msg_recv.max, 0, q->ai_addr, &q->ai_addrlen);
if (bytes_recv < 0) {
fprintf(stderr, "%s\n", strerror(errno));
exit(EXIT_FAILURE);
}
msg_recv.len = bytes_recv;
if(coap_validate_pkt(&msg_recv) == CE_NONE)
{
printf("Got Valid CoAP Packet\n");
if(coap_get_mid(&msg_recv) == coap_get_mid(&msg_send) &&
coap_get_token(&msg_recv) == coap_get_token(&msg_send))
{
printf("Is Response to Last Message\n");
coap_pretty_print(&msg_recv);
}
}else{
printf("Received %zi Bytes, Not Valid CoAP\n", msg_recv.len);
hex_dump(msg_recv.buf, msg_recv.len);
}
sleep(1); // One Second
}
}
void ICACHE_FLASH_ATTR coap_send(void *pvParameters)
//int coap_send(void)
{
char *url = "coap.me";
int port = 5683;
uint16_t message_id_counter = rand();
printf("%d,%d",message_id_counter, port);
int sock;
int bytes_sent;
int bytes_recv;
struct hostent *host;
struct sockaddr_in server_addr;
/* 通过函数入口参数url获得host地址*/
host= (struct hostent *) gethostbyname(url);
printf("here");
/* 创建一个socket，类型是SOCK_DGRAM，UDP类型 */
if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) == -1)
{
printf("Socket Error\n");
}
printf("here2");
/* 初始化预连接的服务端地址 */
server_addr.sin_family = AF_INET;
server_addr.sin_port = htons(port);
server_addr.sin_addr = *((struct in_addr *)host->h_addr);
memset(&(server_addr.sin_zero), 0, sizeof(server_addr.sin_zero));
printf("--------------------\r\n");
// Build Message
coap_init_pdu(&msg_send);
//memset(msg_send, 0, msg_send_len);
coap_set_version(&msg_send, COAP_V1);
coap_set_type(&msg_send, CT_CON);
coap_set_code(&msg_send, CC_GET); // or POST to write
coap_set_mid(&msg_send, message_id_counter++);
// coap_set_token(&msg_send, rand(), 2);
coap_add_option(&msg_send, CON_URI_PATH, (uint8_t*)"hello", strlen("hello"));
// coap_add_option(&msg_send, CON_URI_PATH, (uint8_t*)alias, strlen(alias));
// coap_add_option(&msg_send, CON_URI_QUERY, (uint8_t*)cik, strlen(cik));
// to write, set payload:
//coap_set_payload(msg_send, &msg_send_len, MSG_BUF_LEN, (uint8_t*)"99", 2);
// Send Message
if ((bytes_sent = sendto(sock, msg_send.buf, msg_send.len, 0,
(struct sockaddr *)&server_addr, sizeof(struct sockaddr))) == -1)
{
printf("Failed to Send Message\r\n");
}
else{
printf("bytes %d\n",bytes_sent);
}
socklen_t len = sizeof(server_addr);
bytes_recv = recvfrom(sock, (void *)msg_recv.buf, msg_recv.max, 0, (struct sockaddr *)&server_addr,&len);
if (bytes_recv < 0) {
printf("game over baby\n");
}
else{
printf("yuhu\n");
}
msg_recv.len = bytes_recv;
if(coap_validate_pkt(&msg_recv) == CE_NONE)
{
printf("Got Valid CoAP Packet\n");
if(coap_get_mid(&msg_recv) == coap_get_mid(&msg_send) &&
coap_get_token(&msg_recv) == coap_get_token(&msg_send))
{
printf("Is Response to Last Message\n");
coap_pretty_print(&msg_recv);
}
}else{
printf("Received %zi Bytes, Not Valid CoAP\n", msg_recv.len);
}
vTaskDelete(NULL);
}
