require websocket and https combine example

[ChiragBhavsar]

Hi,

I am using SDK v2.6.1.

Is there any course available on DevAcademy for WebSockets?

For WebSocket i take reference of v2.6.1/zephyr/samples/net/sockets/websocket_client,

when i try to give wifi credential using wifi connect -s <ssid> -k 1 -p <password> then i have got wifi: command not found so require to give wifi credential?or how we are able to see WebSocket reference code output,

I need an example that merges WebSocket and HTTPS. Could you also provide feedback on how to merge both into a single code?

[dejans]

Hi,

Is there any course available on DevAcademy for WebSockets?

No, there is no course for WebSockets on DevAcademy.

when i try to give wifi credential using wifi connect -s <ssid> -k 1 -p <password> then i have got wifi: command not found so require to give wifi credential?or how we are able to see WebSocket reference code output,

You could try to test "wifi connect" command using wi-fi shell sample.

I need an example that merges WebSocket and HTTPS. Could you also provide feedback on how to merge both into a single code?

Can you provide more information about your application? Which problem are you trying to solve? What is your goal when combining https and websocket?

Best regards,
Dejan

[ChiragBhavsar]

I used SDK v2.6.1 with the nrf7002dk_nrf5340_cpuapp board.

I referenced the Wi-Fi shell example and merged its prj.conf file with the websocket_client prj.conf file.

However, I encountered errors. If you have a working websocket_client example with Wi-Fi shell integration, please provide it.

[00:00:00.498,443] <inf> net_config: Initializing network
[00:00:00.506,683] <inf> net_config: Waiting interface 1 (0x20001960) to be up...
[00:00:00.517,425] <inf> wpa_supp: Successfully initialized wpa_supplicant
[00:00:10.517,669] <err> wpa_supp: eloop: select: Not enough space
[00:00:10.537,780] <inf> wpa_supp: nordic_wlan0: CTRL-EVENT-DSCP-POLICY clear_all
[00:00:10.548,736] <inf> wpa_supp: nordic_wlan0: CTRL-EVENT-DSCP-POLICY clear_all
[00:00:10.559,265] <inf> wpa_supp: nordic_wlan0: CTRL-EVENT-TERMINATING 
[00:00:10.569,152] <err> net_sock: invalid access on sock 1 by thread 0x20002628
[00:00:10.579,833] <inf> wpa_supp: ELOOP: remaining socket: sock=8 eloop_data=0x2000daa0 user_data=0x0 handler=0x3d91d
[00:00:10.608,703] <inf> wpa_supp: z_wpas_start: exitcode 0
[00:00:30.517,761] <inf> net_config: IPv4 address: 192.0.2.1
[00:00:30.541,259] <inf> net_config: Running dhcpv4 client...
[00:00:30.565,521] <err> net_if: Cannot join all nodes address ff02::1 (-115)
[00:00:30.595,184] <err> net_if: Cannot join solicit node address ff02::1:ff00:1 (-115)
[00:00:30.622,863] <err> net_config: Timeout while waiting network interface
[00:00:30.648,010] <err> net_config: Network initialization failed (-115)
[00:00:33.627,838] <err> net_websocket_client_sample: Cannot connect to IPv4 remote (-116)
[00:00:33.755,035] <err> net_tcp: net_pkt alloc failure
[00:00:36.778,442] <err> net_websocket_client_sample: Cannot connect to IPv6 remote (-116)
[00:00:36.805,267] <err> net_websocket_client_sample: Cannot connect to 192.0.2.2:9001
[00:00:36.831,817] <err> net_websocket_client_sample: Cannot connect to [2001:db8::2]:9001
[00:00:36.858,337] <err> net_websocket_client_sample: No IPv4 or IPv6 connectivity
uart:~$ 

below is my prj.conf file

# Networking config
CONFIG_NETWORKING=y
CONFIG_NET_IPV4=y
CONFIG_NET_IPV6=y
CONFIG_NET_TCP=y
CONFIG_NET_SHELL=y
CONFIG_NET_STATISTICS=y

# Sockets
CONFIG_NET_SOCKETS=y
CONFIG_NET_SOCKETS_POSIX_NAMES=y
CONFIG_NET_SOCKETS_POLL_MAX=4

# Network driver config
CONFIG_TEST_RANDOM_GENERATOR=y

# Network address config
CONFIG_NET_CONFIG_AUTO_INIT=y
CONFIG_NET_CONFIG_SETTINGS=y
CONFIG_NET_CONFIG_NEED_IPV4=y
CONFIG_NET_CONFIG_NEED_IPV6=y
CONFIG_NET_CONFIG_MY_IPV4_ADDR="192.0.2.1"
CONFIG_NET_CONFIG_MY_IPV4_GW="192.0.2.2"
# Address of HTTP IPv4 server
CONFIG_NET_CONFIG_PEER_IPV4_ADDR="192.0.2.2"
CONFIG_NET_CONFIG_MY_IPV6_ADDR="2001:db8::1"
# Address of HTTP IPv6 server
CONFIG_NET_CONFIG_PEER_IPV6_ADDR="2001:db8::2"

# HTTP & Websocket
CONFIG_HTTP_CLIENT=y
CONFIG_WEBSOCKET_CLIENT=y

# Network debug config
CONFIG_LOG=y
CONFIG_LOG_MODE_IMMEDIATE=y
CONFIG_NET_LOG=y
#CONFIG_NET_SOCKETS_LOG_LEVEL_DBG=y
#CONFIG_NET_HTTP_LOG_LEVEL_DBG=y
#CONFIG_NET_WEBSOCKET_LOG_LEVEL_DBG=y
#CONFIG_NET_CONTEXT_LOG_LEVEL_DBG=y
#CONFIG_NET_TCP_LOG_LEVEL_DBG=y

# CONFIG_MAIN_STACK_SIZE=2048
# CONFIG_HEAP_MEM_POOL_SIZE=1500

CONFIG_WIFI=y
CONFIG_WIFI_NRF700X=y

# WPA supplicant
CONFIG_WPA_SUPP=y
CONFIG_NET_L2_WIFI_SHELL=y

# System settings
CONFIG_NEWLIB_LIBC=y
CONFIG_NEWLIB_LIBC_NANO=n

# Networking

CONFIG_NET_UDP=y

CONFIG_NET_DHCPV4=y
CONFIG_DNS_RESOLVER=y


CONFIG_NET_STATISTICS_WIFI=y
CONFIG_NET_STATISTICS_USER_API=y

CONFIG_NET_PKT_RX_COUNT=8
CONFIG_NET_PKT_TX_COUNT=8

# Below section is the primary contributor to SRAM and is currently
# tuned for performance, but this will be revisited in the future.
CONFIG_NET_BUF_RX_COUNT=16
CONFIG_NET_BUF_TX_COUNT=16
CONFIG_NET_BUF_DATA_SIZE=128
CONFIG_NRF700X_RX_NUM_BUFS=16
CONFIG_NRF700X_MAX_TX_AGGREGATION=4
# nRF700x is main consumer: (16 + 8) * 1600 = ~40KB + ~40KB control path (experimental)
CONFIG_HEAP_MEM_POOL_SIZE=80000
CONFIG_NET_TC_TX_COUNT=1

CONFIG_NET_IF_UNICAST_IPV6_ADDR_COUNT=4
CONFIG_NET_IF_MCAST_IPV6_ADDR_COUNT=5
CONFIG_NET_MAX_CONTEXTS=5
CONFIG_NET_CONTEXT_SYNC_RECV=y

CONFIG_INIT_STACKS=y

CONFIG_NET_L2_ETHERNET=y


# Memories
CONFIG_MAIN_STACK_SIZE=4096
CONFIG_SHELL_STACK_SIZE=4400
CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=2048
CONFIG_NET_TX_STACK_SIZE=4096
CONFIG_NET_RX_STACK_SIZE=4096

# Debugging
CONFIG_STACK_SENTINEL=y
CONFIG_DEBUG_COREDUMP=y
CONFIG_DEBUG_COREDUMP_BACKEND_LOGGING=y
CONFIG_DEBUG_COREDUMP_MEMORY_DUMP_MIN=y
CONFIG_SHELL_CMDS_RESIZE=n
#CONFIG_DEBUG=y
CONFIG_WPA_SUPP_LOG_LEVEL_INF=y

# Kernel options
CONFIG_ENTROPY_GENERATOR=y

# Logging

CONFIG_PRINTK=y
CONFIG_SHELL=y
CONFIG_SHELL_GETOPT=y
CONFIG_DEVICE_SHELL=y
CONFIG_POSIX_CLOCK=y
CONFIG_DATE_SHELL=y
# CONFIG_NET_CONFIG_AUTO_INIT=n

CONFIG_WIFI_MGMT_EXT=y
CONFIG_WIFI_CREDENTIALS=y
# STEP 7.1 - Disable the below Kconfig symbol when using secure storage 
#CONFIG_WIFI_CREDENTIALS_BACKEND_SETTINGS=y

# STEP 7.2 - Enable the secure credentials storage API
CONFIG_MBEDTLS=y
CONFIG_MBEDTLS_ENABLE_HEAP=y
CONFIG_MBEDTLS_HEAP_SIZE=81920
CONFIG_WIFI_CREDENTIALS_BACKEND_PSA=y
CONFIG_TFM_PROFILE_TYPE_MEDIUM=y
CONFIG_PM_PARTITION_SIZE_TFM_SRAM=0x18000
CONFIG_MBEDTLS_HEAP_SIZE=16384 
CONFIG_FLASH=y
CONFIG_FLASH_PAGE_LAYOUT=y
CONFIG_FLASH_MAP=y
CONFIG_NVS=y
CONFIG_SETTINGS=y
CONFIG_SETTINGS_NVS=y

# printing of scan results puts pressure on queues in new locking
# design in net_mgmt. So, use a higher timeout for a crowded
# environment.
CONFIG_NET_MGMT_EVENT_QUEUE_TIMEOUT=5000

Can you provide more information about your application? Which problem are you trying to solve? What is your goal when combining https and websocket?

>> I want to transfer and receive data from the server using HTTPS and WebSocket on the nrf7002dk_nrf5340_cpuapp board. I have implemented HTTPS code on this board.

Below is my HTTPS code, could you guide me on how to integrate WebSocket code with it?

/*
 * Copyright (c) 2023 Nordic Semiconductor ASA
 *
 * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
 */

#include <errno.h>
#include <stddef.h>
#include <string.h>
#include <stdio.h>
#include <zephyr/kernel.h>
#include <zephyr/types.h>
#include <zephyr/logging/log.h>

#include <dk_buttons_and_leds.h>

/* STEP 3 - Include the necessary header files */
#include <zephyr/net/wifi.h>
#include <zephyr/net/wifi_mgmt.h>
#include <zephyr/net/net_mgmt.h>
#include <net/wifi_mgmt_ext.h>

/* STEP 12.4 - Include the header file for the Wi-FI credentials library */
#include <net/wifi_credentials.h>
#include <zephyr/net/socket.h>

#include <zephyr/net/net_if.h>
#include <zephyr/sys/printk.h>

// #define SERVER_IP_ADDR "192.168.1.10" // Replace with your server's IP
// #define SERVER_PORT 8080

// LOG_MODULE_REGISTER(Lesson2_Exercise2, LOG_LEVEL_INF);

/* STEP 4 - Define a macro for the relevant network events */
// #define EVENT_MASK (NET_EVENT_L4_CONNECTED | NET_EVENT_L4_DISCONNECTED)

/* STEP 1.2 - Include the header file of the HTTP client library */
#include <zephyr/net/http/client.h>
/* STEP 1.4 - Include the header file for the TLS credentials library */
#include <zephyr/net/tls_credentials.h>

/* STEP 2.3 - Include the certificate */
static const char ca_certificate[] = {
#include "certificate.h"
};

LOG_MODULE_REGISTER(Lesson5_Exercise1);

#define EVENT_MASK (NET_EVENT_L4_CONNECTED | NET_EVENT_L4_DISCONNECTED)

/* STEP 5 - Declare the callback structure for Wi-Fi events */
static struct net_mgmt_event_callback mgmt_cb;

/* STEP 6.1 - Define the boolean connected and the semaphore run_app */
static bool connected = 0;
static bool firsttime = 1;
static K_SEM_DEFINE(run_app, 0, 1);

/* STEP 4.1 - Define a macro for the credential security tag */
#define HTTP_TLS_SEC_TAG 1

/* STEP 2 - Define the macros for the HTTP server hostname and port */
#define HTTP_HOSTNAME "api.nexkey.com" //staging.api.nexkey.com
#define HTTP_PORT     443

/* STEP 3 - Declare the necessary buffers for receiving messages */
#define RECV_BUF_SIZE  2048
#define CLIENT_ID_SIZE 36

static char recv_buf[RECV_BUF_SIZE];
static char client_id_buf[CLIENT_ID_SIZE + 2];

/* STEP 4 - Define the variable for the counter as 0 */
static int counter = 0;

static int sock;
static struct sockaddr_storage server;

//static struct net_mgmt_event_callback mgmt_cb;
//static bool connected;
//static K_SEM_DEFINE(run_app, 0, 1);



static int server_resolve(void)
{
	int err;
	struct addrinfo *result;
	struct addrinfo hints = {.ai_family = AF_INET, .ai_socktype = SOCK_STREAM};

	err = getaddrinfo(HTTP_HOSTNAME, STRINGIFY(HTTP_PORT), &hints, &result);
	if (err != 0) {
		LOG_ERR("getaddrinfo failed, err: %d, %s", err, gai_strerror(err));
		return -EIO;
	}

	if (result == NULL) {
		LOG_ERR("Error, address not found");
		return -ENOENT;
	}

	struct sockaddr_in *server4 = ((struct sockaddr_in *)&server);
	server4->sin_addr.s_addr = ((struct sockaddr_in *)result->ai_addr)->sin_addr.s_addr;
	server4->sin_family = AF_INET;
	server4->sin_port = ((struct sockaddr_in *)result->ai_addr)->sin_port;

	char ipv4_addr[NET_IPV4_ADDR_LEN];
	inet_ntop(AF_INET, &server4->sin_addr.s_addr, ipv4_addr, sizeof(ipv4_addr));
	LOG_INF("IPv4 address of HTTP server found %s", ipv4_addr);

	freeaddrinfo(result);

	return 0;
}

static int setup_credentials(void)
{
	
	/* STEP 4.2 - Add the credential to the device */
	int err = tls_credential_add(HTTP_TLS_SEC_TAG, TLS_CREDENTIAL_CA_CERTIFICATE, ca_certificate,
				 sizeof(ca_certificate));
	if (err < 0) {
		LOG_ERR("Failed to add TLS credentials, err: %d", err);
		return err;
	}

	return 0;
}

static int server_connect(void)
{
	int err;
	sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TLS_1_2);
	if (sock < 0) {
		LOG_ERR("Failed to create socket, err: %d, %s", errno, strerror(errno));
		return -errno;
	}

	/* STEP 5.1 - Configure the socket with the security tag for the certificate */
	sec_tag_t sec_tag_opt[] = {
		HTTP_TLS_SEC_TAG,
	};
	err = setsockopt(sock, SOL_TLS, TLS_SEC_TAG_LIST, sec_tag_opt, sizeof(sec_tag_opt));
	if (err < 0) {
		LOG_ERR("Failed to set TLS security TAG list, err: %d", errno);
		(void)close(sock);
		return -errno;
	}
	/* STEP 5.2 - Configure the socket with the hostname of the HTTP server */
	err = setsockopt(sock, SOL_TLS, TLS_HOSTNAME, HTTP_HOSTNAME, sizeof(HTTP_HOSTNAME));
	if (err < 0) {
		LOG_ERR("Failed to set TLS_HOSTNAME option. Err: %d", errno);
		(void)close(sock);
		return -errno;
	}

	err = connect(sock, (struct sockaddr *)&server, sizeof(struct sockaddr_in));
	if (err < 0) {
		LOG_ERR("Connecting to server failed, err: %d, %s", errno, strerror(errno));
		return -errno;
	}

	LOG_INF("Connected to server");
	return 0;
}

static void response_cb(struct http_response *rsp, enum http_final_call final_data, void *user_data)
{
	/* STEP 9 - Define the callback function to print the body */
	LOG_INF("Response status: %s", rsp->http_status);

	if (rsp->body_frag_len > 0) {
		char body_buf[rsp->body_frag_len];
		strncpy(body_buf, rsp->body_frag_start, rsp->body_frag_len);
		body_buf[rsp->body_frag_len] = '\0';
		LOG_INF("Received: %s", body_buf);
	}

	LOG_INF("Closing socket: %d", sock);
	close(sock);
}

static void client_id_cb(struct http_response *rsp, enum http_final_call final_data,
			 void *user_data)
{
	/* STEP 6.1 - Log the HTTP response status */
	LOG_INF("Response status: %s", rsp->http_status);

	/* STEP 6.2 - Retrieve and format the client ID */
	char client_id_buf_tmp[CLIENT_ID_SIZE + 1];
	strncpy(client_id_buf_tmp, rsp->body_frag_start, CLIENT_ID_SIZE);
	client_id_buf_tmp[CLIENT_ID_SIZE] = '\0';
	client_id_buf[0] = '/';
	strcat(client_id_buf, client_id_buf_tmp);

	LOG_INF("Successfully acquired client ID: %s", client_id_buf);

	/* STEP 6.3 - Close the socket */
	LOG_INF("Closing socket: %d", sock);
	close(sock);
}

static int client_http_put(void)
{
	/* STEP 7 - Define the function to send a PUT request to the HTTP server */
	int err = 0;
	int bytes_written;
	const char *headers[] = {"Connection: close\r\n", NULL};

	struct http_request req;
	memset(&req, 0, sizeof(req));

	char buffer[12] = {0};
	bytes_written = snprintf(buffer, 12, "%d", counter);
	if (bytes_written < 0) {
		LOG_INF("Unable to write to buffer, err: %d", bytes_written);
		return bytes_written;
	}

	req.header_fields = headers;
	req.method = HTTP_PUT;
	req.url = client_id_buf;
	req.host = HTTP_HOSTNAME;
	req.protocol = "HTTP/1.1";
	req.payload = buffer;
	req.payload_len = bytes_written;
	req.response = response_cb;
	req.recv_buf = recv_buf;
	req.recv_buf_len = sizeof(recv_buf);

	LOG_INF("HTTP PUT request: %s", buffer);
	err = http_client_req(sock, &req, 5000, NULL);
	if (err < 0) {
		LOG_ERR("Failed to send HTTP PUT request %s, err: %d", buffer, err);
	}

	return err;
}

static int client_http_get(void)
{
	/* STEP 8 - Define the function to send a GET request to the HTTP server */
	int err = 0;
	const char *headers[] = {"Connection: close\r\n", NULL};
	
	struct http_request req;
	memset(&req, 0, sizeof(req));

	req.header_fields = headers;
	req.method = HTTP_GET;
	req.url = client_id_buf;
	req.host = HTTP_HOSTNAME;
	req.protocol = "HTTP/1.1";
	req.response = response_cb;
	req.recv_buf = recv_buf;
	req.recv_buf_len = sizeof(recv_buf);

	LOG_INF("HTTP GET request");
	err = http_client_req(sock, &req, 5000, NULL);
	if (err < 0) {
		LOG_ERR("Failed to send HTTP GET request, err: %d", err);
	}

	return err;
}

static int client_get_new_id(void)
{
	int err = 0;

	/* STEP 5.1 - Define the structure http_request and fill the block of memory */
	struct http_request req;
	memset(&req, 0, sizeof(req));

	/* STEP 5.2 - Populate the http_request structure */
	const char *headers[] = {"Connection: close\r\n", NULL};
	req.header_fields = headers;
	req.method = HTTP_POST;
	req.url = "https://api.nexkey.com";
	req.host = HTTP_HOSTNAME;
	req.protocol = "HTTP/1.1";
	req.response = client_id_cb;
	req.recv_buf = recv_buf;
	req.recv_buf_len = sizeof(recv_buf);

	/* STEP 5.3 - Send the request to the HTTP server */
	LOG_INF("HTTP POST request");
	err = http_client_req(sock, &req, 5000, NULL);
	if (err < 0) {
		LOG_ERR("Failed to send HTTP POST request, err: %d", err);
	}
	return err;
}

/* STEP 6.2 - Define the callback function for network events */
static void net_mgmt_event_handler(struct net_mgmt_event_callback *cb,
			  uint32_t mgmt_event, struct net_if *iface)
{
	if ((mgmt_event & EVENT_MASK) != mgmt_event) {
		return;
	}
	if (mgmt_event == NET_EVENT_L4_CONNECTED) {
		LOG_INF("Network connected");
		connected = true;
		dk_set_led_on(DK_LED1);
		//k_sem_give(&run_app);
		return;
	}
	if (mgmt_event == NET_EVENT_L4_DISCONNECTED) {
		if (connected == false) {
			LOG_INF("Waiting for network to be connected");
		} else {
			dk_set_led_off(DK_LED1);
			LOG_INF("Network disconnected");
			connected = false;
		}
		//k_sem_reset(&run_app);
		return;
	}
}

/* STEP 7 - Define the function to populate the Wi-Fi credential parameters */
//static int wifi_args_to_params(struct wifi_connect_req_params *params)
//{

	/* STEP 7.1 Populate the SSID and password */
	//params->ssid = CONFIG_WIFI_CREDENTIALS_STATIC_SSID;
	//params->ssid_length = strlen(params->ssid);

	//params->psk = CONFIG_WIFI_CREDENTIALS_STATIC_PASSWORD;
	//params->psk_length = strlen(params->psk);

	/* STEP 7.2 - Populate the rest of the relevant members */
	//params->channel = WIFI_CHANNEL_ANY;
	//params->security = WIFI_SECURITY_TYPE_PSK;
	//params->mfp = WIFI_MFP_OPTIONAL;
	//params->timeout = SYS_FOREVER_MS;
	//params->band = WIFI_FREQ_BAND_UNKNOWN;
	//#if NCS_VERSION_NUMBER > 0x20600
	//memset(params->bssid, 0, sizeof(params->bssid));
	//#endif
	//return 0;
//}

static struct wifi_credentials_personal wifi_cred;
void set_wifi_credentials_struct() 
{

	char *wifi_ssid = "realme";
	char *wifi_password = "Chirag@1527";

	wifi_cred.header.type = WIFI_SECURITY_TYPE_PSK;
	memset(wifi_cred.header.bssid, 0, sizeof(wifi_cred.header.bssid));
	wifi_cred.header.flags = 0;
	//wifi_cred.header.channel = WIFI_CHANNEL_ANY;
	//wifi_cred.header.timeout = 10;

	wifi_cred.header.ssid_len = strlen(wifi_ssid);
	memcpy(wifi_cred.header.ssid, wifi_ssid, wifi_cred.header.ssid_len);
	
	wifi_cred.password_len = strlen(wifi_password);
	memcpy(wifi_cred.password, wifi_password, wifi_cred.password_len);

	int ret = wifi_credentials_set_personal_struct(&wifi_cred);

	if (ret != 0) {
		LOG_ERR("Failed to set credentials, err: %d", ret);
	}
}
static void button_handler(uint32_t button_state, uint32_t has_changed)
{
	/* STEP 10 - Define the button handler to send requests upon button triggers */
	if (has_changed & DK_BTN1_MSK && button_state & DK_BTN1_MSK) {
		if (server_connect() >= 0) {
			client_http_put();
			counter++;
		}
	} else if (has_changed & DK_BTN2_MSK && button_state & DK_BTN2_MSK) {
		if (server_connect() >= 0) {
			client_http_get();
		}
	}
}

int main(void)
{
	/* STEP 8.1 - Declare the variable for the network configuration parameters */
	//struct wifi_connect_req_params cnx_params;



	/* STEP 8.2 - Get the network interface */
	struct net_if *iface = net_if_get_first_wifi();
	if (iface == NULL) {
		LOG_ERR("Returned network interface is NULL");
		return -1;
	}

	if (dk_leds_init() != 0) {
		LOG_ERR("Failed to initialize the LED library");
	}

	/* Sleep to allow initialization of Wi-Fi driver */
	k_sleep(K_SECONDS(1));

	/* STEP 9 - Initialize and add the callback function for network events */
	net_mgmt_init_event_callback(&mgmt_cb, net_mgmt_event_handler, EVENT_MASK);
	net_mgmt_add_event_callback(&mgmt_cb);

	/* STEP 10 - Populate cnx_params with the network configuration */
	//wifi_args_to_params(&cnx_params);

    set_wifi_credentials_struct();
	/* STEP 11 - Call net_mgmt() to request the Wi-Fi connection */
	LOG_INF("Connecting to Wi-Fi");
	//printf("try to connect with wifi");
	//LOG_ERR("buttons library");
	//int err = net_mgmt(NET_REQUEST_WIFI_CONNECT_STORED, iface, &wifi_cred, sizeof(struct wifi_credentials_personal));
	//LOG_ERR("buttons library");
	// if (err) {
	// 	LOG_ERR("Connecting to Wi-Fi failed, err: %d", err);
	// 	//return ENOEXEC;
	// }

	//k_sem_take(&run_app, K_FOREVER);

	if (dk_buttons_init(button_handler) != 0) {
		LOG_ERR("Failed to initialize the buttons library ");
	}
	while(1)
	{
		//LOG_ERR("Failed to initialize the buttons library ");
		k_sleep(K_SECONDS(1));
		if(!connected)
		{
			int err = net_mgmt(NET_REQUEST_WIFI_CONNECT_STORED, iface, &wifi_cred, sizeof(struct wifi_credentials_personal));
		}
		if(connected && firsttime == 1)
		{
			k_sleep(K_SECONDS(1));
			if (server_resolve() != 0) {
				LOG_ERR("Failed to resolve server name");
				return 0;
			}
			
			if (setup_credentials() != 0) {
		        LOG_ERR("Setup credentials failed");
	        }

			if (server_connect() != 0) {
				LOG_ERR("Failed to initialize client");
				return 0;
			}	

			/* STEP 11 - Retrieve the client ID upon connection */
			if (client_get_new_id() < 0) {
				LOG_ERR("Failed to get client ID");
				return 0;
			}
			firsttime = 0;
			LOG_ERR("buttons library");
		}
		//return 0;
	}
		
}

below is my prj.conf file for https

# Wi-Fi
CONFIG_WIFI=y
CONFIG_WIFI_NRF700X=y
CONFIG_WPA_SUPP=y
# CONFIG_WPA_SUPP_CRYPTO_PSA=y

# Wi-Fi Credentials
CONFIG_WIFI_CREDENTIALS=y
CONFIG_WIFI_CREDENTIALS_STATIC=n

# Networking Management API
CONFIG_NET_MGMT=y
CONFIG_NET_MGMT_EVENT=y
CONFIG_NET_MGMT_EVENT_INFO=y
CONFIG_NET_MGMT_EVENT_STACK_SIZE=4096
CONFIG_NET_CONNECTION_MANAGER=y
CONFIG_WIFI_MGMT_EXT=y

# Support for shell commands
# CONFIG_SHELL=y
# CONFIG_WIFI_CREDENTIALS_SHELL=y
# CONFIG_SHELL_STACK_SIZE=4400

# Logging
CONFIG_LOG=y

# DK library
CONFIG_DK_LIBRARY=y

# System settings
CONFIG_NEWLIB_LIBC=y
CONFIG_NEWLIB_LIBC_NANO=n

# Networking
CONFIG_NETWORKING=y
CONFIG_NET_NATIVE=y
CONFIG_NET_SOCKETS=y
CONFIG_NET_SOCKETS_POSIX_NAMES=y
CONFIG_POSIX_MAX_FDS=16

CONFIG_NET_L2_ETHERNET=y
CONFIG_NET_IPV4=y
CONFIG_NET_IPV6=y
CONFIG_NET_TCP=y
CONFIG_NET_DHCPV4=y
CONFIG_DNS_RESOLVER=y

# TLS
# STEP 1.1 - Enable the TLS library and security relevant configurations
CONFIG_NET_SOCKETS_SOCKOPT_TLS=y
CONFIG_TLS_CREDENTIALS=y
CONFIG_MBEDTLS_RSA_C=y
CONFIG_MBEDTLS_DHM_C=y 

# STEP 1.2 - Enable support for server name indication (SNI)
CONFIG_MBEDTLS_SSL_SERVER_NAME_INDICATION=y

# Memory
CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=4096
CONFIG_MAIN_STACK_SIZE=4096
CONFIG_HEAP_MEM_POOL_SIZE=153600

CONFIG_NET_TCP_WORKQ_STACK_SIZE=2048
CONFIG_NET_TX_STACK_SIZE=4096
CONFIG_NET_RX_STACK_SIZE=4096
CONFIG_NET_BUF_RX_COUNT=16
CONFIG_NET_BUF_TX_COUNT=16
CONFIG_NET_BUF_DATA_SIZE=256
CONFIG_NET_TC_TX_COUNT=0

# HTTP
CONFIG_HTTP_CLIENT=y
# For storing Wi-Fi credentials
CONFIG_WIFI_CREDENTIALS_BACKEND_SETTINGS=y
CONFIG_FLASH=y
CONFIG_FLASH_PAGE_LAYOUT=y
CONFIG_FLASH_MAP=y
CONFIG_NVS=y
CONFIG_SETTINGS=y
CONFIG_SETTINGS_NVS=y

# CONFIG_NET_L2_WIFI_SHELL=y

# General
CONFIG_POSIX_CLOCK=y

# Optimize Wi-Fi stack to save some memory

CONFIG_NRF700X_MAX_TX_AGGREGATION=4

# Wi-Fi

CONFIG_WIFI_NRF700X_LOG_LEVEL_ERR=y

# WPA supplicant

CONFIG_WPA_SUPP_LOG_LEVEL_ERR=y

# Zephyr NET Connection Manager connectivity layer
CONFIG_L2_WIFI_CONNECTIVITY=y
# CONFIG_L2_WIFI_CONNECTIVITY_AUTO_DOWN=n
# CONFIG_L2_WIFI_CONNECTIVITY_AUTO_CONNECT=n

# DNS

# CONFIG_NET_SOCKETS_DNS_TIMEOUT=30000

# NET sockets

CONFIG_NET_UDP=y
# CONFIG_NET_SOCKETS_OFFLOAD=n

# CONFIG_NET_CONTEXT_SNDTIMEO=y

# TLS networking
CONFIG_NET_SOCKETS_ENABLE_DTLS=n
CONFIG_NET_SOCKETS_TLS_MAX_CONTEXTS=2


# TLS credentials

# Here is the overlay I used for nrf7002dk_nrf5340_cpuapp

# CONFIG_TLS_CREDENTIALS_BACKEND_VOLATILE=y

# mbedTLS
CONFIG_NRF_SECURITY=y
CONFIG_MBEDTLS=y
CONFIG_MBEDTLS_ENABLE_HEAP=y
CONFIG_MBEDTLS_HEAP_SIZE=81920
CONFIG_PSA_WANT_KEY_TYPE_RSA_PUBLIC_KEY=y
CONFIG_PSA_WANT_RSA_KEY_SIZE_2048=y

CONFIG_MBEDTLS_TLS_LIBRARY=y

CONFIG_PM_SINGLE_IMAGE=y

[ChiragBhavsar]

yes from my end i am able to reproduce this issue consistently,

in your log i am able to see that you are also not able to connect with websocket

[00:03:53.470,916] <err> Lesson5_Exercise1: Cannot connect to IPv4 remote (-116)
[00:03:53.471,374] <err> Lesson5_Exercise1: Cannot connect to echo.thingy.rocks: 80
[00:03:53.471,466] <err> Lesson5_Exercise1: No IPv4 or IPv6 connectivity

If possible, please suggest changes to the code from your side so that I can implement them and try to resolve this problem.

[dejans]

Hi,

I have managed to reproduce this issue only once. I expect for the error to be consistently reproducible. It seems that the application on my side is not able to connect to wi-fi network most of the time. 
Can you make a minimal sample which would show the same error (which can be replicated) for us to look into?

Best regards,
Dejan

[ChiragBhavsar]

Hi,

please try with attached code.

Also please give me code which work with websocket so first i will take a reference of it and try to merge with https.

sta_websocket.zip

[dejans]

Hi,

I have tested further your previous project HTTP.zip. There seems to be connection consistently. The change was to extend the sleep to allow for initialization of the wi-fi driver using k_sleep(K_SECONDS(10)); instead of k_sleep(K_SECONDS(1));

[00:00:00.502,746] <inf> fs_nvs: 2 Sectors of 4096 bytes
[00:00:00.502,746] <inf> fs_nvs: alloc wra: 0, fd0
[00:00:00.502,777] <inf> fs_nvs: data wra: 0, c8
*** Booting nRF Connect SDK v3.5.99-ncs1-1 ***
[00:00:02.055,969] <inf> wifi_mgmt_ext: Connection requested
[00:00:02.056,732] <inf> Lesson5_Exercise1: Connecting to Wi-Fi
[00:00:04.606,048] <inf> wifi_mgmt_ext: Connection requested
[00:00:07.159,393] <inf> wifi_mgmt_ext: Connection requested
[00:00:09.713,409] <inf> wifi_mgmt_ext: Connection requested
[00:00:12.267,883] <inf> wifi_mgmt_ext: Connection requested
[00:00:14.834,533] <inf> wifi_mgmt_ext: Connection requested
[00:00:17.400,695] <inf> wifi_mgmt_ext: Connection requested
[00:00:19.947,631] <inf> wifi_mgmt_ext: Connection requested
[00:00:22.501,220] <inf> wifi_mgmt_ext: Connection requested
[00:00:25.055,206] <inf> wifi_mgmt_ext: Connection requested
[00:00:27.609,893] <inf> wifi_mgmt_ext: Connection requested
[00:00:30.181,518] <inf> wifi_mgmt_ext: Connection requested
[00:00:30.264,404] <inf> Lesson5_Exercise1: Network connected
[00:00:32.203,094] <inf> Lesson5_Exercise1: IPv4 address of HTTP server found 54.240.174.114
[00:00:33.456,909] <inf> Lesson5_Exercise1: Connected to server
[00:00:33.456,939] <inf> Lesson5_Exercise1: HTTP POST request
[00:00:33.571,350] <inf> Lesson5_Exercise1: Response status: Created
[00:00:33.571,380] <inf> Lesson5_Exercise1: Successfully acquired client ID: /fb269045-2f73-4068-8064-b227e8a6cf70
[00:00:33.571,411] <inf> Lesson5_Exercise1: Closing socket: 9
[00:00:36.434,722] <err> Lesson5_Exercise1: Cannot connect to IPv4 remote (-116)
[00:00:36.435,150] <err> Lesson5_Exercise1: Cannot connect to echo.thingy.rocks:80
[00:00:36.435,241] <err> Lesson5_Exercise1: No IPv4 or IPv6 connectivity

I have also tested your most recent sample project sta_websocket.zip. Here is my log

[00:00:41.839,843] <inf> sta: IPv4 address of HTTP server found 143.204.55.79
[00:00:42.560,241] <inf> sta: Connected to server
[00:00:42.560,241] <inf> sta: HTTP POST request
[00:00:42.652,740] <inf> sta: Response status: Forbidden
[00:00:42.652,801] <inf> sta: Successfully acquired client ID: /<!DOCTYPE HTML PUBLIC "-//W3C//DTD H
[00:00:42.652,801] <inf> sta: Closing socket: 9
[00:00:44.725,738] <err> sta: Cannot connect to IPv4 remote (-116)
[00:00:44.726,165] <err> sta: Cannot connect to demos.kaazing.com:80
[00:00:44.726,257] <err> sta: No IPv4 or IPv6 connectivity

Do you get the same log?

Best regards,
Dejan

[ChiragBhavsar]

yes i have got the same log, i am also not able to connect with the the websocket so i have got 

[00:00:44.725,738] <err> sta: Cannot connect to IPv4 remote (-116)
[00:00:44.726,165] <err> sta: Cannot connect to demos.kaazing.com:80
[00:00:44.726,257] <err> sta: No IPv4 or IPv6 connectivity

[dejans]

Hi,

We will look into this internally. I expect to get back to you by the end of next week.

Best regards,
Dejan

[ChiragBhavsar]

ok,

Thank you for your support.

If possible, please expedite the process as we have an upcoming client delivery.

[dejans]

Hi,

It does not seem to be any problem with wi-fi connectivity but with subsequent http request. Could you provide monitor mode capture along with your SSID/passphrase details?

Best regards,
Dejan

[ChiragBhavsar]

HI,

l am not able understand what you exactly require?

Also if possible then please from your side give us suggestion so we make change in code and try to solve this problem. 

[dejans]

Hi,

You can enable wi-fi monitor mode by for example following this link. 

sudo iw dev
sudo ip link set wlp1s0 down
sudo iw wlp1s0 set monitor none
sudo ip link set wlp1s0 up
sudo iw dev wlp1s0 set channel 1

You can also look at our Wi-Fi monitor sample.

Best regards,
Dejan