HTTP send errno -1163019603

[isurki]

Dear Community;

I am using this code provided by a Nordic engineer to make some HTTP request in order to use Telegram Bot API. It works fine but after 1-2 days working I am getting an error at this part of the code: 

int num_bytes = send(client_fd, send_buf, send_data_len, 0);
if (num_bytes < 0) {
	printk("send errno: %d\n", errno);
	goto clean_up;
}

This is the error: "send errno: -1163019603"

The problem is that after first time this happens never recovers its normal functionality.

What is causing this error? How can be solved?

Any idea or suggestion is welcomed. Thanks.

[isurki]

Hi;

My program checks if the Telegram Bot has any receiving message. If so, the program replies to that message and then disconnects LTE connection. It repeats the process over and over again. So it does not send a lot of messages,  but it is checking every minute if it has messages. The process is:

1.-Establish LTE connection. (modem_configure())

2.-Check for messages.

    2.1.-Reply for messages

3.-Disconnect LTE. (lte_lc_offline())

4.-Sleep 1 minute.

It would be nice to know that does "-1163019603" errno mean.

I have also reflashed lastest modem firmware but nothing changed.

I have also try to make an HTTP request for IFTTT service and works fine.

Thanks.

[CWallach]

I don't know what that error code means, but  -1163019603 in hex is  FFFF FFFF BAAD BAAD‬ which looks like a generic error message.

[isurki]

/*
 * Copyright (c) 2019 Nordic Semiconductor ASA
 *
 * SPDX-License-Identifier: LicenseRef-BSD-5-Clause-Nordic
 */

#include <zephyr.h>
#include <net/socket.h>
#include <stdio.h>
#include <drivers/uart.h>
#include <string.h>
#include <lte_lc.h>

/*#define HTTP_HOST "google.com"*/
#define HTTP_HOST "api.telegram.org"
#define HTTP_PORT 443
#define RECV_BUF_SIZE 8192

char recv_buf[RECV_BUF_SIZE + 1];

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

	hints.ai_flags = 0;
	hints.ai_family = AF_INET;
	hints.ai_socktype = SOCK_STREAM;
	hints.ai_protocol = 0;

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

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

	int err = getaddrinfo(HTTP_HOST, NULL, &hints, &res);
	if (err) {
		printk("getaddrinfo errno %d\n", errno);
		/* No clean up needed, just return */
		return;
	}

	((struct sockaddr_in *)res->ai_addr)->sin_port = htons(HTTP_PORT);

	char send_buf[] =
		"GET /bot669648316:AAEFvydDWp1fSMbUrx00bBv-9dZptEfu3gU/sendMessage?chat_id=418166911&text=Test HTTP/1.1\r\n"
		"Host: api.telegram.org\r\n"
		"Connection: close\r\n\r\n";

	/*char send_buf[] =
		"GET / HTTP/1.1\r\n"
		"Host: www.google.com:443\r\n"
		"Connection: close\r\n\r\n";*/

	int send_data_len = strlen(send_buf);

	int client_fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TLS_1_2);

	enum {
		NONE = 0,
		OPTIONAL = 1,
		REQUIRED = 2,
	};

	int verify = OPTIONAL;

	err = setsockopt(client_fd, SOL_TLS, TLS_PEER_VERIFY, &verify,
			 sizeof(verify));
	if (err) {
		printk("setsockopt err: %d\n", errno);
	}

	err = connect(client_fd, (struct sockaddr *)res->ai_addr,
		      sizeof(struct sockaddr_in));
	if (err > 0) {
		printk("connect err: %d\n", errno);
		goto clean_up;
	}

	int num_bytes = send(client_fd, send_buf, send_data_len, 0);
	if (num_bytes < 0) {
		printk("send errno: %d\n", errno);
		goto clean_up;
	}

	int tot_num_bytes = 0;

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

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

	printk("\n\rFinished. Closing socket");
clean_up:
	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");
	}
}

int main(void)
{

	int err1;

	while (1){

	    printf("\nStarting HTTPS test.\n");
	    modem_configure();
            k_sleep(1000);
	    app_http_start();

	    if ( (err1 = lte_lc_offline() ) ){

	      printk( "Failure turning off Modem: %d\n", err1 );

	    }

	    else{


	      printk("Modem turned off.\n");

	    }

	    k_sleep(1000);

	}
}

Hello;

I have made some test with the NRF9160 DK:

I have updated to v2.1.99-ncs1-rc1 from v1.4.99 I think. After that "-1163019603" Errno disappeared and now I get "22" errno. The only change I have needed to make is to comment "#CONFIG_NET_RAW_MODE=y" line in prj.conf.

Do we know what does errno "22" mean?

I will attach here my code to send a Telegram message. Can anyone try to run it? It is not necessary to make any change. If so, the code should send a message to my telegram account.

Thanks for your support.

[CWallach]

Some error codes are in the file errno.h,   errno = 22 is EINVAL, or Invalid argument.

After editing prj.conf you have to close the project in Segger, then delete the build directory, then import the project again.  The reason is that when a project is imported prj.conf is read in order to generate other files.  If  deleting the build directory and re-importing the project is not done then changes to prj.conf  will not take affect, This is a bug in the build procedure.

[isurki]

I always close the project and the Segger Studio before applying any change to prj.conf and clean build directory.

Concerning to Errno 22, that means Invalid Argument, I can't understand why it fails because it worked fine for 1-2 days.

I will wait for a Nordic Engineer answer or to someone that tests my code.

Thank you.