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.

[Hakon]

Hello,

Are you by any chance using an iBasis SIM?

[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.

[Hakon]

You can't turn the modem on and off more than once every other minute. Try a longer k_sleep() interval.