Current HTTPS status.

Question

Hi;

I am trying to send a Telegram message using Telegram Bot API. As the documentation shows: "All queries to the Telegram Bot API must be served over HTTPS". I have tried using Rallares's HTTP example, and I have successfully modified it to send a Telegram message. However, when I make the request I get an "HTTP error 301 - moved permanently" error because I don't use HTTPS.

So I am stuck because I need HTTPS and I can't find any working example on the repositories. I have read in other questions that HTTPS is already implemented or will be implemented soon.

So I wonder if actually is possible to use it. If not, do you know any other way to send a Telegram message using an NFR9160? Maybe I can do something with an HTTPS server code...

I will post my code here if useful:

#include <zephyr.h>
#include <stdio.h>
#include <string.h>
#include <gps.h>
#include <sensor.h>
#include <console.h>
#include <dk_buttons_and_leds.h>
#include <lte_lc.h>
#include <misc/reboot.h>
#include <net/bsdlib.h>
#include <net/socket.h>

#define HTTP_HOST "api.telegram.org"
#define HTTP_PORT 80
#define RECV_BUF_SIZE 8192

char recv_buf[RECV_BUF_SIZE + 1];

int blocking_recv(int fd, u8_t *buf, u32_t size, u32_t flags)
{
	int err;

	do {
		err = recv(fd, buf, size, flags);
	} while (err < 0 && errno == EAGAIN);

	return err;
}

int blocking_send(int fd, u8_t *buf, u32_t size, u32_t flags)
{
	int err;

	do {
		err = send(fd, buf, size, flags);
	} while (err < 0 && errno == EAGAIN);

	return err;
}

int blocking_connect(int fd, struct sockaddr *local_addr, socklen_t len)
{
	int err;

	do {
		err = connect(fd, local_addr, len);
	} while (err < 0 && errno == EAGAIN);

	return err;
}

void app_http_start(void)
{
	struct sockaddr_in local_addr;
	struct addrinfo *res;

	local_addr.sin_family = AF_INET;
	local_addr.sin_port = htons(0);
	local_addr.sin_addr.s_addr = 0;

	printk("HTTP example\n\r");

	int err = getaddrinfo(HTTP_HOST, NULL, NULL, &res);

	/*printk("getaddrinfo err: %d\n\r", err);*/
	((struct sockaddr_in *)res->ai_addr)->sin_port = htons(HTTP_PORT);

    char send_buf[] = "GET /botMYBOTTOKEN/sendMessage?chat_id=MYCHATID&text=test HTTP/1.1\r\nHost: api.telegram.org\r\n\r\n";
	
	int send_data_len = strlen(send_buf);

	int client_fd = socket(AF_INET, SOCK_STREAM, 0);

	printk("client_fd: %d\n\r", client_fd);
	err = bind(client_fd, (struct sockaddr *)&local_addr,
		   sizeof(local_addr));
	printk("bind err: %d\n\r", err);
	err = blocking_connect(client_fd, (struct sockaddr *)res->ai_addr,
			       sizeof(struct sockaddr_in));
	printk("connect err: %d\n\r", err);

	int num_bytes = send(client_fd, send_buf, send_data_len, 0);

	printk("send err: %d\n\r", num_bytes);

	int tot_num_bytes = 0;

	do {
		/* TODO: make a proper timeout *
		 * Current solution will just hang 
		 * until remote side closes connection */
		num_bytes =
			blocking_recv(client_fd, recv_buf, RECV_BUF_SIZE, 0);
		tot_num_bytes += num_bytes;

		if (num_bytes <= 0) {
			break;
		}
		printk("\n\nhere:%s\n\n", recv_buf);
	} while (num_bytes > 0);

	printk("\n\rFinished. Closing socket\n");
	freeaddrinfo(res);
	err = close(client_fd);
}

static void modem_configure(void)
{
	if (IS_ENABLED(CONFIG_LTE_AUTO_INIT_AND_CONNECT)) {
		/* Do nothing, modem is already turned on and connected. */
	} else {
		int err;

		printk("Establishing LTE link (this may take some time) ...\n");
		err = lte_lc_init_and_connect();
		__ASSERT(err == 0, "LTE link could not be established.");
		printk("LTE connection established.\n");
	}
}


void main(void)
{
	int err;
	printk("Application started\n");
    k_sleep(2000);
    modem_configure();
    app_http_start();
	k_sleep(2000);
	if ( (err = lte_lc_offline() ) )
	{
	    printk( "Failure turning off Modem: %d\n", err );
	}
	else{
	    printk("Modem turned off.\n");
}


}

Thanks a lot.

Current HTTPS status.

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