AWS-SDK-Arduino Exception 29

[JoAnze]

Platform

• Hardware: [ESP-12E]
• Core Version: [2.3.0-rc2]
• Development Env: [Arduino IDE]
• Operating System: [Windows]

Settings in IDE

• Module: [Generic ESP8266 Module|Wemos D1 mini r2|Nodemcu|other]
• Flash Size: [4MB]
• CPU Frequency: [80Mhz]
• Upload Using: [SERIAL]
• Upload Speed: [115200] (serial upload only)

Problem Description

I'm using:
https://github.com/Schm1tz1/aws-sdk-arduino-esp8266
But can't open an issue there.

I can update the AWS IoT device shadow properly.
But after the 17 update the Exception 29 occurs.

I know that this method "iotClient.update_shadow(shadow, actionError);" (and called functions/libraries) is the problem, because after every call the Heap getting smaller. I checked that with ESP.getFreeHeap()
The Heap size at the beginning is 39352 and when the error occurs at about 20000

MCVE Sketch

#include <ESP8266WiFi.h>
#include <AmazonIOTClient.h>
#include "ESP8266AWSImplementations.h"

Esp8266HttpClient httpClient;
Esp8266DateTimeProvider dateTimeProvider;

AmazonIOTClient iotClient;
ActionError actionError;

  const char* ssid = "xxx";
  const char* password = "xxx";

void setup() {
  Serial.begin(115200);
  delay(10);

  // Connect to WAP
  Serial.print("Connecting to ");
  Serial.println(ssid);
  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.println("WiFi connected");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());

  iotClient.setAWSRegion("us-east-1");
  iotClient.setAWSEndpoint("amazonaws.com");
  iotClient.setAWSDomain(".iot.us-east-1.amazonaws.com");
  iotClient.setAWSPath("/things/xxx/shadow");
  iotClient.setAWSKeyID("xxx");
  iotClient.setAWSSecretKey("xxx");
  iotClient.setHttpClient(&httpClient);
  iotClient.setDateTimeProvider(&dateTimeProvider);
}

void loop(){
  char shadow[100];
  strcpy(shadow, "{\"state\":{\"reported\": {\"foobar\": \"bar\"}}}");
  char* result = iotClient.update_shadow(shadow, actionError);

//  Serial.print(result);
  Serial.println(ESP.getFreeHeap());
  delay(500);
}

Debug Messages

Exception (29):
epc1=0x4000e1b2 epc2=0x00000000 epc3=0x00000000 excvaddr=0x00000004 depc=0x00000000

ctx: cont 
sp: 3fff0f90 end: 3fff1550 offset: 01a0

>>>stack>>>
3fff1130:  3fff0448 000013e7 000013e7 40226763  
3fff1140:  00000208 3fff9ba4 3fff7964 402268fc  
3fff1150:  00000104 00009d28 000013a5 3fff9ba4  
3fff1160:  00000040 00000082 3fffadbc 40226bae  
3fff1170:  00800000 00000080 00000000 00000041  
3fff1180:  00000040 0000003f 40206cf8 00000041  
3fff1190:  3fffb794 3fff9ba4 3fffad8c 3fff4824  
3fff11a0:  3fffbca8 ffffffff 3fff9ba4 3fff9ba4  
3fff11b0:  00000040 3fff9ba4 3fffadbc 3fff9ba4  
3fff11c0:  00000040 3fff9ba4 3fffadbc 4022770a  
3fff11d0:  3fff5c04 0000003f 33149086 00000001  
3fff11e0:  3fff9ba4 3fffada4 3fffadbc 00000001  
3fff11f0:  00000010 3fff9ba4 0000000f 40227965  
3fff1200:  3fffad8c 3fff480c 0000000f 00000001  
3fff1210:  00000001 3fff287c 3fff7aa1 402267c8  
3fff1220:  00000100 3fff56f4 3fff7a9f 00000000  
3fff1230:  00000100 3fff56f4 3fff7a9f 402289f1  
3fff1240:  3fff1270 00000000 000000d0 00000030  
3fff1250:  1d240649 1c2c6111 e714e207 00000004  
3fff1260:  00000004 3fff79dc 3fff7a99 40224afc  
3fff1270:  9a650203 c473328a d4203f54 d7552177  
3fff1280:  99f504fc cd973018 c59b12aa c48f69c2  
3fff1290:  eb0e8724 5c26ab42 98119408 0649dfd6  
3fff12a0:  00000004 3fff864a 3fff79dc 40224efd  
3fff12b0:  5e9a8eb5 1f7b052d 2836d612 413fe662  
3fff12c0:  44d994a6 f4103e0d 02fcb068 f8f3a81b  
3fff12d0:  749d6fbd 3fff864a 3fff9584 00000b00  
3fff12e0:  00000b6b 3fff8634 00000015 00000004  
3fff12f0:  3fff79dc 3fff864a 00000004 00000004  
3fff1300:  00000004 3fff864a 3fff79dc 402248f4  
3fff1310:  00000000 3fff7a99 3fff79dc 40224c9c  
3fff1320:  0000002a 3fff26ac 0000002b 401004d8  
3fff1330:  3fff1380 0000000e 00000010 00000000  
3fff1340:  3fff7554 3fff26ac 3fff79dc 01000000  
3fff1350:  3fff1380 3fff13d0 3fff79dc 40224a4c  
3fff1360:  40203064 00000001 3fff0530 00001387  
3fff1370:  000190a2 3fff13d0 3fff7044 402036c5  
3fff1380:  000001bb 3fff78ac 3fff13d0 40202b0a  
3fff1390:  1cb90534 3fff26ac 3fff13f8 3fff7614  
3fff13a0:  000001bb 3fff13d0 3fff26ac 40203a19  
3fff13b0:  3ffe9770 1cb90534 3ffe9770 1cb90534  
3fff13c0:  000001bb 3fff26ac 3fff046c 40204614  
3fff13d0:  3ffe9180 00000000 000003e8 40206678  
3fff13e0:  3fff02dc 3fff51e4 3fff7044 3fff0528  
3fff13f0:  00000060 3fff14f0 3fff705c 0000000f  
3fff1400:  00000000 00000055 3fff1514 401004d8  
3fff1410:  00000004 3ffe93ec 000003de 3fff0528  
3fff1420:  000000a0 3fff044c 3fff027c 4020706e  
3fff1430:  000000a0 3fff044c 3fff027c 40204380  
3fff1440:  3fffdad0 3fff044c 3fff046c 402024bd  
3fff1450:  7473227b 22657461 72227b3a 726f7065  
3fff1460:  22646574 4c227b3a 66746675 68637565  
3fff1470:  6b676974 22746965 3336203a 2c30382e  
3fff1480:  65542220 7261706d 72757461 32203a22  
3fff1490:  30372e36 4322202c 3a22324f 31373120  
3fff14a0:  7d7d7d33 00000000 00000003 40206456  
3fff14b0:  31383632 00000001 3ffe9395 40207170  
3fff14c0:  401059f2 0000000b 3ffe9013 3fff0528  
3fff14d0:  3ffe9628 3fff027c 00000029 401004d8  
3fff14e0:  3ffe9394 3fff0334 3fff046c 40206c1c  
3fff14f0:  3fff32fc 0000005f 00000054 3fff278c  
3fff1500:  0000000f 00000005 3fff4314 0000000f  
3fff1510:  00000005 3fff2e2c 3fff0200 41d5999a  
3fff1520:  427f3333 00000000 00000001 40206d19  
3fff1530:  3fffdad0 00000000 3fff0520 40206d44  
3fff1540:  feefeffe feefeffe 3fff0530 40100720  
<<<stack<<<

Decoded:

Exception 29: StoreProhibited: A store referenced a page mapped with an attribute that does not permit stores
Decoding 29 results
0x402260f3: more_comps at /Users/igrokhotkov/e/axtls/e1/crypto/bigint.c line 1072
0x4022628c: alloc at /Users/igrokhotkov/e/axtls/e1/crypto/bigint.c line 1106
0x4022653e: regular_multiply at /Users/igrokhotkov/e/axtls/e1/crypto/bigint.c line 822
0x4020669c: esp_yield at C:\Users\Jonas\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.3.0-rc2\cores\esp8266/core_esp8266_main.cpp line 56
0x4022709a: bi_barrett at /Users/igrokhotkov/e/axtls/e1/crypto/bigint.c line 1289
0x402272f5: bi_mod_power at /Users/igrokhotkov/e/axtls/e1/crypto/bigint.c line 1414
0x40226158: trim at /Users/igrokhotkov/e/axtls/e1/crypto/bigint.c line 1197
0x40228381: RSA_public at /Users/igrokhotkov/e/axtls/e1/crypto/rsa.c line 242
:  (inlined by) RSA_encrypt at /Users/igrokhotkov/e/axtls/e1/crypto/rsa.c line 276
0x4022448c: send_client_key_xchg at /Users/igrokhotkov/e/axtls/e1/ssl/tls1_clnt.c line 352
0x4022488d: do_clnt_handshake at /Users/igrokhotkov/e/axtls/e1/ssl/tls1_clnt.c line 109
0x40224284: do_handshake at /Users/igrokhotkov/e/axtls/e1/ssl/tls1.c line 1481
:  (inlined by) basic_read at /Users/igrokhotkov/e/axtls/e1/ssl/tls1.c line 1357
0x4022462c: do_client_connect at /Users/igrokhotkov/e/axtls/e1/ssl/tls1_clnt.c line 154
0x401004d8: malloc at C:\Users\Jonas\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.3.0-rc2\cores\esp8266\umm_malloc/umm_malloc.c line 1664
0x402243dc: ssl_read at /Users/igrokhotkov/e/axtls/e1/ssl/tls1.c line 265
0x40202ba8: WiFiClient::_s_connected(void*, void*, signed char) at C:\Users\Jonas\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.3.0-rc2\libraries\ESP8266WiFi\src/WiFiClient.cpp line 327
0x40203209: SSLContext::connect(ClientContext*, char const*, unsigned int) at C:\Users\Jonas\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.3.0-rc2\libraries\ESP8266WiFi\src/WiFiClientSecure.cpp line 517
:  (inlined by) WiFiClientSecure::_connectSSL(char const*) at C:\Users\Jonas\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.3.0-rc2\libraries\ESP8266WiFi\src/WiFiClientSecure.cpp line 279
0x4020264e: WiFiClient::connect(IPAddress, unsigned short) at C:\Users\Jonas\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.3.0-rc2\libraries\ESP8266WiFi\src/WiFiClient.cpp line 327
0x4020355d: WiFiClientSecure::connect(char const*, unsigned short) at C:\Users\Jonas\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.3.0-rc2\libraries\ESP8266WiFi\src/WiFiClientSecure.cpp line 269
0x40204158: Esp8266HttpClient::send(char const*, char const*, int) at C:\Users\Jonas\Documents\Arduino\libraries\AWS-SDK-Arduino\src/ESP8266AWSImplentations.cpp line 26
0x40206151: String::copy(char const*, unsigned int) at C:\Users\Jonas\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.3.0-rc2\cores\esp8266/WString.cpp line 688
0x40206285: String::operator=(char const*) at C:\Users\Jonas\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.3.0-rc2\cores\esp8266/WString.cpp line 688
0x401004d8: malloc at C:\Users\Jonas\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.3.0-rc2\cores\esp8266\umm_malloc/umm_malloc.c line 1664
0x40206a12: AWSClient4::sendData(char const*) at C:\Users\Jonas\Documents\Arduino\libraries\AWS-SDK-Arduino\src/AWSClient4.cpp line 230
0x40203ec4: AmazonIOTClient::update_shadow(MinimalString, ActionError&) at C:\Users\Jonas\Documents\Arduino\libraries\AWS-SDK-Arduino\src/AmazonIOTClient.cpp line 23
0x402022cb: loop at C:\Users\Jonas\Documents\Arduino\ESP8266_AWS/ESP8266_AWS.ino line 130
0x402066bd: esp_schedule at C:\Users\Jonas\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.3.0-rc2\cores\esp8266/core_esp8266_main.cpp line 56
0x402066e8: loop_wrapper at C:\Users\Jonas\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.3.0-rc2\cores\esp8266/core_esp8266_main.cpp line 56
0x40100720: cont_norm at C:\Users\Jonas\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.3.0-rc2\cores\esp8266/cont.S line 109

[devyte]

2.3.0-rc2 was the second release candidate for releaee 2.3.0, I.e. it's older than release 2.3.0, which itself is beyond ancient, and had a list of issues a kilometer long.
The latest core release is 2.4.1, and also has a few known issues. I suggest trying latest git, or waiting until release 2.4.2, which will be a bugfix release + some experimental features.

In addition, aws uses ssl. All core releases so far rely on axtls for ssl, which has its own long list of issues. Current git adds bearssl as an experimental feature meant to replace axtls. This will be an under-the-hood lib replacement, but right now axtls is still the default.
Please be aware that axtls is planned for deprecation, and then for retirement, so issues found in wificlient/serversecure that are traced to axtls, such as this one, won't be addressed.

Finally, there have been several hidden long standing issues found and fixed, particularly since integrating with lwip2. Some pf those are mem leaks.

I strongly suggest testing your application with latest git and bearssl. If you need help, please study the bearssl examples.
Closing this.

[Ajay-Embed]

#include <AmazonIOTClient.h>
#include <ESP8266AWSImplementations.h>

Esp8266HttpClient httpClient;
Esp8266DateTimeProvider dateTimeProvider;

AmazonIOTClient iotClient;
ActionError actionError;

const char *ssid="FUPRO";
const char *password="begooddontbebad";

void setup() {
Serial.begin(115200);
delay(10);

// Connect to WAP
Serial.print("Connecting to ");
Serial.println(ssid);
WiFi.begin(ssid, password);

while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected");
Serial.println("IP address: ");
Serial.println(WiFi.localIP());

iotClient.setAWSRegion("ap-south-1");
iotClient.setAWSEndpoint("amazonaws.com");
iotClient.setAWSDomain("a3gkm8nxkzxavd-ats.iot.ap-south-1.amazonaws.com");
iotClient.setAWSPath("/things//AWSiot/shadow");
iotClient.setAWSKeyID("_");
iotClient.setAWSSecretKey("");
iotClient.setHttpClient(&httpClient);
iotClient.setDateTimeProvider(&dateTimeProvider);
}

void loop(){

const char* shadow = "{"state":{"reported": {"foobar": "bar"}}}";
const char* result = iotClient.update_shadow(shadow, actionError);

Serial.print(result);

delay(60000);
}

I uploaded this code and several other codes it always shows can't setup SSL connection.!
How should I resolve this error??