HTTP Example. Secure Error or Stuck

[MosheSmartAmr]

Hi! 
Found in this post https://devzone.nordicsemi.com/f/nordic-q-a/43514/nrf9160-http-and-other-examples
about http client example, and link to repo to examles.
All libs is up to date. (zephyr, nrf, nrfxlib, mcuboot)

I have two error types:
1. Hardfault error. After getaddr return -1.
2. Forever stuck in this stage

06 NRF_IPC		Non-Secure	OK
07 NRF_VMC		Non-Secure	OK
08 NRF_FPU		Non-Secure	ERROR
09 NRF_EGU1		Non-Secure	OK
10 NRF_EGU2		Non-Secure	OK
11 NRF_TWIM2		Non-Secure	OK
12 NRF_SPIM3		Non-Secure	OK
13 NRF_TIMER0		Non-Secure	OK
14 NRF_TIMER1		Non-Secure	OK
15 NRF_TIMER2		Non-Secure	OK
16 NRF_GPIOTE1		Non-Secure	OK

SPM: MSP_NS 20024e00
SPM: prepare to jump to Non-Secure image
***** Booting Zephyr OS v1.13.99-ncs1-5891-gd70aa052bc4b *****

[Martin Lesund]

Hi Moshe,
There is an issue with the samples in that repo, mainy that they are missing a config in the prj.conf file.

It should work as normal if you add:

CONFIG_MAIN_STACK_SIZE=4096

in the prj.conf file to the sample and then build/flash it.

---

I have added a suggestion for the prj.conf file here:

CONFIG_BSD_LIBRARY=y
CONFIG_GPIO=n
CONFIG_SERIAL=y
CONFIG_STDOUT_CONSOLE=y
CONFIG_UART_INTERRUPT_DRIVEN=y
CONFIG_TEST_RANDOM_GENERATOR=y
CONFIG_NETWORKING=y
CONFIG_NET_BUF_USER_DATA_SIZE=1
CONFIG_NET_SOCKETS_OFFLOAD=y
CONFIG_NET_SOCKETS=y
CONFIG_NET_SOCKETS_POSIX_NAMES=y
CONFIG_NET_RAW_MODE=y
CONFIG_TRUSTED_EXECUTION_NONSECURE=y
CONFIG_LOG=n
CONFIG_LOG_DEFAULT_LEVEL=4
CONFIG_HEAP_MEM_POOL_SIZE=1024
# LTE link control
CONFIG_LTE_LINK_CONTROL=y
CONFIG_LTE_AUTO_INIT_AND_CONNECT=n

# Main thread
CONFIG_MAIN_THREAD_PRIORITY=7
CONFIG_MAIN_STACK_SIZE=4096

And added that them modem starts in the main application, to make it function a little bit more like the official samples:

/*
 * Copyright (c) 2018 Nordic Semiconductor ASA
 *
 * SPDX-License-Identifier: LicenseRef-BSD-5-Clause-Nordic
 */

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

#define HTTP_HOST "google.com"
#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 / HTTP/1.1\r\nHost: www.google.com:80\r\nConnection: close\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("%s", recv_buf);
	} while (num_bytes > 0);

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


/**@brief Configures modem to provide LTE link. Blocks until link is
 * successfully established.
 */
static void modem_configure(void)
{
#if defined(CONFIG_LTE_LINK_CONTROL)
	if (IS_ENABLED(CONFIG_LTE_AUTO_INIT_AND_CONNECT)) {
		/* Do nothing, modem is already turned on
		 * and connected.
		 */
	} else {
		int err;

		printk("LTE Link Connecting ...\n");
		err = lte_lc_init_and_connect();
		__ASSERT(err == 0, "LTE link could not be established.");
		printk("LTE Link Connected!\n");
	}
#endif
}

int main(void)
{
	printk("HTTP Sample Started\n");
	modem_configure();
	app_http_start();
	while (1) {
		;
	}
}

Best Regards,

Martin L.

[MosheSmartAmr]

Hey, I paste everything you wrote, but there is still error.

Peripheral		Domain		Status
00 NRF_P0		Non-Secure	OK
01 NRF_CLOCK		Non-Secure	OK
02 NRF_RTC1		Non-Secure	OK
03 NRF_NVMC		Non-Secure	OK
04 NRF_UARTE1		Non-Secure	OK
05 NRF_UARTE2		Secure		SKIP
06 NRF_IPC		Non-Secure	OK
07 NRF_VMC		Non-Secure	OK
08 NRF_FPU		Non-Secure	ERROR
09 NRF_EGU1		Non-Secure	OK
10 NRF_EGU2		Non-Secure	OK
11 NRF_TWIM2		Non-Secure	OK
12 NRF_SPIM3		Non-Secure	OK
13 NRF_TIMER0		Non-Secure	OK
14 NRF_TIMER1		Non-Secure	OK
15 NRF_TIMER2		Non-Secure	OK
16 NRF_GPIOTE1		Non-Secure	OK

SPM: MSP_NS 20024e00
SPM: prepare to jump to Non-Secure image
***** Booting Zephyr OS v1.13.99-ncs1-5891-gd70aa052bc4b *****
HTTP Sample Started
LTE Link Connecting ...
LTE Link Connected!
HTTP example

getaddrinfo err: -1

Exception occurred in Secure State
***** HARD FAULT *****
  Fault escalation (see below)
***** BUS FAULT *****
  Precise data bus error
  BFAR Address: 0x50008120
***** Hardware exception *****
Current thread ID = 0x20020130
Faulting instruction address = 0x41376
Fatal fault in ISR! Spinning...