ESP8266httpUpdate crashing occasionally when using WiFiClientSecure

[besso-exceline]

Platform

• Hardware: [ESP-12]
• Core Version: [2.7.4]
• Development Env: [Arduino IDE]
• Operating System: [Windows]

Settings in IDE

• Module: [NodeMCU 0.9]
• Flash Size: [4MB]
• lwip Variant: [v2 Lower Memory]
• CPU Frequency: [80Mhz]
• Upload Using: [SERIAL]
• Upload Speed: [115200]

Problem Description

ESP8266httpUpdate crashes when using WiFiClientSecure, but it happens rarely, very very seldom.
I'm using setInsecure on WiFiClientSecure bcs I dont want to use certificates. I suspect there are some bugs when using WiFiClientSecure with setInsecure(), bcs I see some messages in stack trace concerning SSL
0x40206742: BearSSL::WiFiClientSecure::_run_until(unsigned int, bool)
0x40226f16: br_ssl_engine_hs_reset at src/ssl/ssl_engine.c line 1320
0x40206a3c: BearSSL::WiFiClientSecure::_wait_for_handshake()

MCVE

WiFiClientSecure secClient;
void setup() {
secClient.setInsecure();
ESPhttpUpdate.update(secClient, "myserver.no", 443, "/esp8266update", "FW_30");
}

Debug Messages

Exception (0):
epc1=0xb9d7dc98 epc2=0x00000000 epc3=0x00000000 excvaddr=0x00000000 depc=0x00000000

stack>>>

ctx: sys
sp: 3fffedb0 end: 3fffffb0 offset: 0190
3fffef40: 92664958 97d2b9bf 86801931 b9d3eae8
3fffef50: 2d836d07 aec7137c 5c5c5c5c d4d3351b
3fffef60: f05e1dd2 fcc80459 a8f48cd3 00000030
3fffef70: 00000000 ffffffff 000000d8 40104d45
3fffef80: 40104d4b 00068dcc 00000000 00070f07
3fffef90: 4010000d 00000000 00000000 00000028
3fffefa0: 40245c60 3fffef3c 40245c19 3ffff838
3fffefb0: 3fffffc0 00000000 00000000 feefeffe
3fffefc0: feefeffe feefeffe feefeffe feefeffe
3fffefd0: feefeffe feefeffe feefeffe feefeffe
3fffefe0: feefeffe feefeffe feefeffe feefeffe
3fffeff0: feefeffe feefeffe feefeffe feefeffe
3ffff000: feefeffe feefeffe feefeffe feefeffe
3ffff010: feefeffe feefeffe feefeffe feefeffe
3ffff020: 275e75eb 9c5c584c d8d31df7 cfa37cc4
3ffff030: 65509a32 2ce6ff73 1513a8f3 3c9a3221
3ffff040: 5c5c5c5c 5c5c5c5c 5c5c5c5c 5c5c5c5c
3ffff050: 5c5c5c5c 5c5c5c5c 5c5c5c5c 5c5c5c5c
3ffff060: c60d99a7 d2419b0b 04602d7d 79bc0754
3ffff070: 30d70a6e 1b56cfc2 9f492e08 64eb8b5e
3ffff080: 85a4a991 b9be7207 3c182320 28c4cf62
3ffff090: 31d26fc9 9e210ed1 df7dd626 b9bad408
3ffff0a0: 3cdabb99 30e06877 dde772c2 fda880ff
3ffff0b0: 5ab35884 9489a178 72cb4c30 a0587ebc
3ffff0c0: 0accf4c2 177af225 114e3564 ba77c526
3ffff0d0: 5793702f 6e02e35d e4daee41 acdfcce5
3ffff0e0: 70544651 ed0f3345 43e1f97b 21eb2a06
3ffff0f0: 80000000 00000000 00000000 00000000
3ffff100: 00000000 00000000 00000000 00000300
3ffff110: 675e725c 94a5747f 0a52844b 7ef35ad3
3ffff120: ddad3a60 33e0cbdb 412c5616 16e3c420
3ffff130: b67f1825 a4e435a7 ee2f4d09 00000080
3ffff140: 03030000 010000dc 7fcab585 000015d1
3ffff150: a87d1821 0ba754ab e4f07077 3cc067e7
3ffff160: 88e50000 dcb978b6 a8c02bc0 5acca9cc
3ffff170: 30c0acc0 2fc02cc0 afc023c0 adc0aec0
3ffff180: 28c009c0 27c024c0 14c02dc0 13c00ac0
3ffff190: 32c025c0 31c02ec0 2ac004c0 29c026c0
3ffff1a0: 0f009c00 0ec005c0 9dc0a0c0 9dc09cc0
3ffff1b0: 3d002f00 a1003c00 12c003c0 35c008c0
3ffff1c0: d39db1f5 29260b44 72a402d3 853ec8d5
3ffff1d0: fc5da8a9 1e3755f6 adcce43a 6672b2a9
3ffff1e0: fbe1e2bd acda67b9 dc769a4f 81e84f2b
3ffff1f0: cda8af1f 54ce2ddd 1c978e4a 887b3472
3ffff200: c589c71c 2994efd5 b49598f6 badad618
3ffff210: 1c4ef3b3 e1afdc99 0af0be65 4530de2f
3ffff220: 7852cda8 f07c8c40 7a9c385d 83508389
3ffff230: f5ee28a9 ddca4328 5e7ee662 60c05685
3ffff240: 93bd1baa 1c411483 e07b8c78 687691dc
3ffff250: e494e988 ae08e66f 00829758 f521f60d
3ffff260: 90d6d514 ae6f0faf 61be8200 0d7d0001
3ffff270: 9d961723 7096f058 f551e9fa 690b0974
3ffff280: 6a6ab95b 843f3d40 d6a2c429 209c0554
3ffff290: c68d476f 12eb778d ff4f5588 21b63033
3ffff2a0: 6e54bec2 db25306f 0f9d64ab 21f1509d
3ffff2b0: 752f4be5 e7340535 391adbee 2c9c02d6
3ffff2c0: 7b857720 5ca1328e f9d91122 998816b0
3ffff2d0: 3eb96ed3 3dedcaee b7ab5a7a ff0f242f
3ffff2e0: 485e113a 994cef35 655d07d8 21560a80
3ffff2f0: c89f5273 7596a60f 50908af5 090e23ef
3ffff300: a9876796 1e23feeb 8825670b 9dd7dd76
3ffff310: c71f7141 c84a1969 aeeb8628 aa2bde4b
3ffff320: d15aabba e76fd0d1 df7475cc d26e9da3
3ffff330: 641026c7 561233b1 395a7bec 77fa48f8
3ffff340: 54f91bf0 1ef8e2f0 5141b0e4 a0f32360
3ffff350: 1377773e c163248c f4227cb0 9092db3e
3ffff360: a93bd22e 1b7ffd17 bf27ea60 0a00a7a8
3ffff370: 848c4e63 0104c6c2 dcf9bc95 6e9be0f1
3ffff380: 90fc0756 0552fe58 5203b142 46b09a80
3ffff390: 8131c641 80310187 750ba10e d100923b
3ffff3a0: d41841c5 d0f36e2d 1d732f8a 3fc7dda6
3ffff3b0: d0488c80 28f34610 8d307d57 17dd756e
3ffff3c0: 08b80909 34a862a9 4025c850 691f56c4
3ffff3d0: 3ffff3c8 ae756f15 e2874592 9120b3c1
3ffff3e0: 1cbe5be0 db4b8bc8 9e0c7bf9 fe1cf421
3ffff3f0: 18f78851 37a0f607 48b90d09 8333d22c
3ffff400: cb9650d5 072fb026 6b9ba04a 18f78851
3ffff410: 9e0c7bf9 6b9ba04a 1cbe5be0 37a0f607
3ffff420: 3ffff560 ae756f15 34a862a9 e2874592
3ffff430: 072fb026 db4b8bc8 f3bcc908 6a09e667
3ffff440: 84caa73b bb67ae85 fe94f82b 3c6ef372
3ffff450: 5f1d36f1 a54ff53a ade682d1 510e527f
3ffff460: 2b3e6c1f 9b05688c fb41bd6b 1f83d9ab
3ffff470: 137e2179 5be0cd19 748f82ee 013a3691
3ffff480: 40103d3b 00000023 00000002 00000000
3ffff490: 3fff3d7c 00000080 00000080 40224980
3ffff4a0: 3ffff4d0 3ffff560 3ffff550 40225207
3ffff4b0: 27dcfce5 00000000 0000007f 3ffff4d0
3ffff4c0: 4025c594 00000006 3fff3cfc 402337c9
3ffff4d0: 401028ec dc000001 00000303 d1150000
3ffff4e0: 85b5ca7f ab54a70b 21187da8 e767c03c
3ffff4f0: 7770f0e4 b678b9dc 0000e588 cca9cc5a
3ffff500: c02bc0a8 c02cc02f c0acc030 c0aec0ad
3ffff510: c023c0af c024c027 c009c028 c00ac013
3ffff520: c02dc014 c02ec031 c025c032 c026c029
3ffff530: c004c02a c005c00e 009c000f c09cc09d
3ffff540: c0a0c09d 003c00a1 002f003d c008c035
3ffff550: c003c012 27dcfce5 00000080 00000000
3ffff560: 5cdc1fcc fb2a9a29 cd83b444 86fdff5a
3ffff570: 1b53540b 740fe97a 93c5999a 809b8102
3ffff580: 5c5bf1e6 4f2b46a1 ae723e4b b3fcf0dd
3ffff590: 994e3964 8b1f79f6 f605670b 63107d3f
3ffff5a0: 00000000 3ffff5f1 3fff3e6c 3fff3e2c
3ffff5b0: 000000e5 4025c8d0 3fff36a4 0000001c
3ffff5c0: bd848ac3 acf2309e 3fff31ec 40226bd5
3ffff5d0: 00000153 3fff3cd0 00000000 40227fc5
3ffff5e0: 746472af b39109ba 78121700 c09960df
3ffff5f0: 9f149200 4025ca08 3ffff5f4 614b635e
3ffff600: 3ffff6e0 4aaaab09 8bddc963 cfc93c6a
3ffff610: 1758aca0 18726a66 29f90970 15e13bc7
3ffff620: ee23cc98 276e9614 982694fa cdb89082
3ffff630: 5db0a88f e035c182 cbe915b6 12ba5201
3ffff640: 00000020 3fff36e4 00000020 402250fb
3ffff650: 3ffff690 3ffff694 3ffff690 4023420d
3ffff660: 00000040 3fff36e4 00000020 4025c8d0
3ffff670: 3fff36a4 3fff36e4 00000020 4025c8d0
3ffff680: 3fff36a4 3fff36e4 00000020 40225b04
3ffff690: 4025c8d0 17c8d83b f318f62f c9ae3bc1
3ffff6a0: 090c2af4 7a97629e 76f9680b 0e507244
3ffff6b0: dda4d1d6 7a776c01 108a54ae cc1dfdaf
3ffff6c0: 71adc0ce 59ba1b9f 673a5c85 61685f9d
3ffff6d0: 3242eea4 17c7f277 00000060 00000000
3ffff6e0: 213f8d68 c3f41508 0cbbb31e f7a81908
3ffff6f0: 8b285a1c e55179a0 7958b9ac f3642acf
3ffff700: 00000000 402179f9 3fff2b54 3fff024c
3ffff710: 3ffff790 2c9f0300 4000050c 3fffc278
3ffff720: 401028ec 3fffc200 00000022 00000000
3ffff730: 40226716 00000030 00000008 ffffffff
3ffff740: 40205bb9 3fff31ec 4025a556 00000d50
3ffff750: c08d3489 80b64c22 45d07ccc 5fbe10df
3ffff760: 0b899883 c849e014 6a704b17 ee5d24d3
3ffff770: c38a84bd 9e30f2ac fdb5f1cb 3969c9b0
3ffff780: 3fff0638 40221b5c 402190bc 00000020
3ffff790: 3fff2e00 00000000 00000000 00000000
3ffff7a0: 00000020 1e306292 4025c8d0 688d3f21
3ffff7b0: 0815f4c3 1eb3bb0c 0819a8f7 1c5a288b
3ffff7c0: a07951e5 acb95879 cf2a64f3 000000b6
3ffff7d0: 3fff2f78 3fff2e78 3fff0638 c08d3489
3ffff7e0: 80b64c22 45d07ccc 5fbe10df 0b899883
3ffff7f0: c849e014 6a704b17 ee5d24d3 c38a84bd
3ffff800: 00000000 4bc6a7f0 74395810 00000000
3ffff810: 00000000 00000000 4bc6a7f0 00000000
3ffff820: 00000000 00000000 00000001 401001d0
3ffff830: 00000000 00000018 3ffefe40 00000000
3ffff840: 00003a98 00000008 4020cd5f 3fffefa0
3ffff850: 3fff3cec 00000000 3fff31ec 4020cda4
3ffff860: 00003a98 00000001 3ffefe40 40206742
3ffff870: 00000250 00000005 a461685f 00000000
3ffff880: 00000001 000055c4 3fff31ec 40226f16
3ffff890: 3fff36ec 3fff2a64 3fff31ec 00000001
3ffff8a0: 00000001 00000001 3ffefe40 40206a3c
3ffff8b0: 3fff2a64 00000000 3ffefe40 40206c1f
3ffff8c0: 0000001a 3fff01e8 00000001 4020cd34
3ffff8d0: 00000000 00000000 00000000 4020d3b6
3ffff8e0: 00000000 3ffefe40 3fff29ac 402057e4
3ffff8f0: 3ffeff98 00000d50 00000511 00000000
3ffff900: 000001bb 3ffefe40 3fff2a64 00000000
3ffff910: 000001bb 3ffefe40 3fff2a64 40206d3d
3ffff920: 4020f8c8 2b9de46d 4020f8c8 2b9de46d
3ffff930: 3ffefe40 3ffffa4c 3ffffa40 40209469
3ffff940: 3ffffa40 ffffffff 3ffff994 3ffffb20
3ffff950: 4020caa4 402092b7 00000020 00000000
3ffff960: 00000001 00000000 3ffffa40 40209e53
3ffff970: 3fff2e00 00000005 3fff2e58 4020bccc
3ffff980: 3ffffa00 00000000 3fff2e58 4020bf2d
3ffff990: 3ffe8aa6 00000001 00000000 ffffff80
3ffff9a0: 3fff2e58 00000001 3ffffa40 40209302
3ffff9b0: 00000000 3fff2e58 3ffff9e0 3ffffb20
3ffff9c0: 00000000 3ffeffac 3ffffa40 40209fbe
3ffff9d0: 00000000 3ffeffac 3ffffa40 40208c5e
3ffff9e0: 3fff2e00 0011001f 80fffa6c 3fff2e00
3ffff9f0: 000e000f 80fffaf0 4020f198 00000000
3ffffa00: 3ffe8f74 3ffffaf0 3ffffa40 40209d2e
3ffffa10: 00000000 00000050 00000000 4020bcef
3ffffa20: 4020bb6f 00000000 3ffffa40 3ffef79c
3ffffa30: 000001bb 3ffeffac 3ffffb20 40208ea9
3ffffa40: 00000000 00000000 3ffefe40 3fff2a64
3ffffa50: 0018001f 00000028 3f0001bb 00011f40
3ffffa60: 3fff2a8c 000e000f 00fffaf0 70747468
3ffffa70: 3ffe8a00 84000000 3fff3044 0199019f
3ffffa80: 0000000b 3fff2a3c 0013001f 0020de29
3ffffa90: 3fff2e00 000054c0 80000020 3fff2e58
3ffffaa0: 00000001 00000000 ffffffff 4020bc00
3ffffab0: 00000000 3fff000a 3ffe8a00 4020aa39
3ffffac0: 80fffafc 00000000 00000000 4020bccc
3ffffad0: 3ffefe40 3ffffafc 3ffffaf0 4020bd02
3ffffae0: 3ffffafc 000054c0 3fff0048 40201cb4
3ffffaf0: 3fff2814 000e000f 00fe8a58 3fff0864
3ffffb00: 0018001f 00ff0048 3fff2a00 0028002f
3ffffb10: 80fe8bb3 3fff0800 001a001f 802021ec
3ffffb20: 3fff2dfc 0048004f 00fffb50 40202206
3ffffb30: 3ffe8bb3 3fffff38 3ffffb50 40203651
3ffffb40: 4020f668 3ffffb50 000003e8 00000158
3ffffb50: 3ffffb40 3ffffb58 3ffffb68 3ffef86e
3ffffb60: 00000002 3ffef878 3ffffb78 3ffef8a7
3ffffb70: 00000002 3ffef8b1 3ffffb88 3ffef8b5
3ffffb80: 00000002 3ffef8bf 3ffffb98 3ffef8d6
3ffffb90: 00000002 3ffef8de 3ffffba8 3ffef8f1
3ffffba0: 00000002 3ffef8fd 3ffffbb8 3ffef904
3ffffbb0: 00000001 3ffef909 3ffffbc8 3ffef917
3ffffbc0: 00000001 3ffef932 3ffffbd8 3ffef937
3ffffbd0: 00000002 3ffef941 3ffffbe8 3ffef94a
3ffffbe0: 00000002 3ffef953 3ffffbf8 3ffef967
3ffffbf0: 00000002 3ffef972 3ffffc08 3ffef973
3ffffc00: 00000002 3ffef97d 3ffffc18 3ffef97e
3ffffc10: 00000002 3ffef987 3ffffc28 3ffef991
3ffffc20: 00000002 3ffef9a3 3ffffc38 3ffef9c4
3ffffc30: 00000002 3ffef9d2 3ffffc48 3ffef9f4
3ffffc40: 00000002 3ffefa00 3ffffc58 3ffefa20
3ffffc50: 00000002 3ffefa2b 3ffffc68 3ffefa45
3ffffc60: 00000002 3ffefa4f 3ffffc78 3ffefa68
3ffffc70: 00000002 3ffefa74 3ffffc88 3ffefa8f
3ffffc80: 00000002 3ffefa98 3ffffc98 3ffefaaf
3ffffc90: 00000001 3ffefab2 00000000 3ffefab4
3ffffca0: 00000002 3ffefabc 00000002 00000000
3ffffcb0: 40249774 3fff29dc 40247efb 00000001
3ffffcc0: ffffffff 00000000 3ffe9691 00000008
3ffffcd0: 40247f4a 3fff29dc 3fff29dc 00000000
3ffffce0: 00000000 00000000 00000020 401001d0
3ffffcf0: 000000c0 3fff29dc 00000000 40101994
3ffffd00: 3ffe9540 40246fff 3fff29dc 3ffed91c
3ffffd10: 00000000 4023af97 3ffed91c 3fff29dc
3ffffd20: 3ffe9088 00000000 0000000c 00000000
3ffffd30: 3fff2a3e 3fff088c 00000008 3ffee060
3ffffd40: 3ffe9088 3ffe9088 3fff0c87 4023cdd7
3ffffd50: 3ffee014 4023c9a8 4023f010 3ffee014
3ffffd60: 40105629 002f877f 3ffee140 00000000
3ffffd70: 3ffee850 3ffee140 3ffffd80 4024fbf6 <
3ffffd80: 00000000 002ef503 4023e9a3 3ffee108
3ffffd90: 3ffee140 4023f010 3ffee014 aa55aa55
3ffffda0: 3ffed9a0 4023e918 3ffed91c 00000012
3ffffdb0: 4023c998 4023c96c 3ffed9a0 00000012
3ffffdc0: 4023c937 3ffed91c 00000012 402502f8
3ffffdd0: 4023cee8 3ffed91c 00000000 4023f010
3ffffde0: 4023c915 3ffeda98 00000002 00000000
3ffffdf0: 4023edc9 0000010f 3ffefe1a 00000000
3ffffe00: 4024f812 3ffe8548 3ffefe1a 00000001
3ffffe10: 402509ff 3ffe8548 3ffefe1a 00000001
3ffffe20: 3fff088c 40204ac8 3ffefe1a 3ffefe1a
3ffffe30: 3ffffeb0 00000000 31313103 4020de29
3ffffe40: 3ffffeb0 37323837 ff29f000 0000053f
3ffffe50: ff2a3c00 2093ba3f ff317040 3fff0048
3ffffe60: 4020a6a4 3fff0048 3ffffead 4020a6b0
3ffffe70: 4020a6a4 3fff0048 3ffffead 4020aa39
3ffffe80: 00000031 0000000a 3ffffeac 4020ad05
3ffffe90: 23e3e000 22a35640 22a37140 ff18ec40
3ffffea0: e432f800 00c0f243 00000001 31313103
3ffffeb0: 33386200 37323837 00000000 3fff2c68
3ffffec0: 00000009 0000002e 3fff28f4 4020ddcd
3ffffed0: 3ffe8a5a 00000000 20000a0d 4020de29
3ffffee0: 3ffe8a5a 00000003 00000009 4020adde
3ffffef0: 3ffe8724 3b45d2e5 3fff0600 00000019
3fffff00: 4020a6a4 3fff0048 3ffe8a58 4020a6b0
3fffff10: 4020a6a4 3fff0048 3ffe8a58 4020aa39
3fffff20: 3fff0028 0000000c 3fffff68 4020bae1
3fffff30: 6f0112ac 00ffffff 38323300 40200033
3fffff40: 80fefe38 3ffeff00 3fff0048 80201305
3fffff50: 3fff29f4 003f003f 00fefeac 3fff2974
3fffff60: 0020002f 00000000 42534200 38323338
3fffff70: 00000009 000000c8 3ffefe40 3ffef941
3fffff80: 00000000 00000000 3fff0188 3fff0188
3fffff90: 00000001 3fff0028 3ffefe40 4020377d
3fffffa0: 3fffdad0 00000000 3fff0148 4020ce44
<<<stack<<<

--------------- CUT HERE FOR EXCEPTION DECODER ---------------

ets Jan 8 2013,rst cause:2, boot mode:(3,6)

load 0x4010f000, len 3584, room 16
tail 0
chksum 0xb0
csum 0xb0
v2843a5ac
~ld

Stack trace decoded

Exception 0: Illegal instruction
PC: 0xb9d7dc98
EXCVADDR: 0x00000000

Decoding stack results
0x40224980: br_sha384_update at src/hash/sha2big.c line 165
0x40225207: sha2small_out at src/hash/sha2small.c line 249
0x402337c9: br_multihash_update at src/hash/multihash.c line 141
0x40226bd5: br_ssl_engine_flush_record at src/ssl/ssl_engine.c line 1113
0x40227fc5: br_ssl_hs_client_run at src/ssl/ssl_hs_client.c line 1366
0x402250fb: br_sha224_update at src/hash/sha2small.c line 221
0x4023420d: br_hmac_init at src/mac/hmac.c line 88
0x40225b04: br_hmac_drbg_update at src/rand/hmac_drbg.c line 146
0x402179f9: glue2esp_linkoutput at glue-esp/lwip-esp.c line 301
0x40226716: br_ssl_client_zero at src/ssl/ssl_client.c line 37
0x40205bb9: BearSSL::br_ssl_client_base_init(br_ssl_client_context*, uint16_t const*, int) at C:\Users\Besso\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.4/tools/sdk/include/bearssl/bearssl_ssl.h line 1158
0x40221b5c: mem_malloc at core/mem.c line 210
0x402190bc: tcpip_tcp_timer at core/timeouts.c line 145
0x401001d0: ets_post(uint8, ETSSignal, ETSParam) at C:\Users\Besso\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.4\cores\esp8266\core_esp8266_main.cpp line 177
0x4020cd5f: __yield() at C:\Users\Besso\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.4\cores\esp8266/core_esp8266_features.h line 92
0x4020cda4: optimistic_yield(uint32_t) at C:\Users\Besso\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.4\cores\esp8266\core_esp8266_main.cpp line 151
0x40206742: BearSSL::WiFiClientSecure::_run_until(unsigned int, bool) at C:\Users\Besso\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.4\cores\esp8266/PolledTimeout.h line 243
0x40226f16: br_ssl_engine_hs_reset at src/ssl/ssl_engine.c line 1320
0x40206a3c: BearSSL::WiFiClientSecure::_wait_for_handshake() at C:\Users\Besso\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.4\libraries\ESP8266WiFi\src\WiFiClientSecureBearSSL.cpp line 564
0x40206c1f: BearSSL::WiFiClientSecure::_connectSSL(char const*) at c:\users\besso\appdata\local\arduino15\packages\esp8266\tools\xtensa-lx106-elf-gcc\2.5.0-4-b40a506\xtensa-lx106-elf\include\c++\4.8.2\bits/shared_ptr.h line 291
0x4020cd34: __esp_yield() at C:\Users\Besso\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.4\cores\esp8266\core_esp8266_main.cpp line 119
0x4020d3b6: __delay(unsigned long) at C:\Users\Besso\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.4\cores\esp8266\core_esp8266_wiring.cpp line 54
0x402057e4: WiFiClient::connect(IPAddress, unsigned short) at C:\Users\Besso\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.4\libraries\ESP8266WiFi\src/include/ClientContext.h line 144
0x40206d3d: BearSSL::WiFiClientSecure::connect(char const*, unsigned short) at C:\Users\Besso\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.4\libraries\ESP8266WiFi\src\WiFiClientSecureBearSSL.cpp line 232
0x40209469: HTTPClient::connect() at C:\Users\Besso\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.4\libraries\ESP8266HTTPClient\src\ESP8266HTTPClient.cpp line 1235
0x4020caa4: operator new[](unsigned int) at C:\Users\Besso\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.4\cores\esp8266\abi.cpp line 49
0x402092b7: HTTPClient::collectHeaders(char const**, unsigned int) at C:\Users\Besso\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.4\libraries\ESP8266HTTPClient\src\ESP8266HTTPClient.cpp line 1156
0x40209e53: HTTPClient::sendRequest(char const*, unsigned char const*, unsigned int) at C:\Users\Besso\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.4\libraries\ESP8266HTTPClient\src\ESP8266HTTPClient.cpp line 681
0x4020bccc: String::copy(char const*, unsigned int) at C:\Users\Besso\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.4\cores\esp8266\WString.cpp line 214
0x4020bf2d: String::operator=(char const*) at C:\Users\Besso\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.4\cores\esp8266\WString.cpp line 285
0x40209302: HTTPClient::collectHeaders(char const**, unsigned int) at C:\Users\Besso\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.4\libraries\ESP8266HTTPClient\src\ESP8266HTTPClient.cpp line 1157
0x40209fbe: HTTPClient::GET() at C:\Users\Besso\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.4\libraries\ESP8266HTTPClient\src\ESP8266HTTPClient.cpp line 601
0x40208c5e: ESP8266HTTPUpdate::handleUpdate(HTTPClient&, String const&, bool) at C:\Users\Besso\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.4\libraries\ESP8266httpUpdate\src\ESP8266httpUpdate.cpp line 292
0x4020f198: String::StringIfHelper() const at C:\Users\Besso\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.4\cores\esp8266/WString.h line 47
0x40209d2e: HTTPClient::begin(WiFiClient&, String const&, unsigned short, String const&, bool) at C:\Users\Besso\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.4\libraries\ESP8266HTTPClient\src\ESP8266HTTPClient.cpp line 209
0x4020bcef: String::String(char const*) at C:\Users\Besso\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.4\cores\esp8266\WString.cpp line 34
0x4020bb6f: String::changeBuffer(unsigned int) at C:\Users\Besso\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.4\cores\esp8266\WString.cpp line 182
0x40208ea9: ESP8266HTTPUpdate::update(WiFiClient&, String const&, unsigned short, String const&, String const&) at C:\Users\Besso\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.4\libraries\ESP8266httpUpdate\src\ESP8266httpUpdate.cpp line 191
0x4020bc00: String::changeBuffer(unsigned int) at C:\Users\Besso\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.4\cores\esp8266\WString.cpp line 167
0x4020aa39: Print::write(char const*) at C:\Users\Besso\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.4\cores\esp8266/Print.h line 62
0x4020bccc: String::copy(char const*, unsigned int) at C:\Users\Besso\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.4\cores\esp8266\WString.cpp line 214
0x4020bd02: String::String(char const*) at C:\Users\Besso\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.4\cores\esp8266\WString.cpp line 36
0x40201cb4: check_Update() at C:\Users\Besso\source\arduino\sbc\sunbed02/sunbed02.ino line 614
0x40202206: ArduinoJson::JsonObject::get_impl (char const*) const at C:\Users\Besso\Documents\Arduino\libraries\ArduinoJson\src/ArduinoJson/JsonObject.hpp line 285
0x40203651: get_connect() at C:\Users\Besso\source\arduino\sbc\sunbed02/sunbed02.ino line 661
0x401001d0: ets_post(uint8, ETSSignal, ETSParam) at C:\Users\Besso\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.4\cores\esp8266\core_esp8266_main.cpp line 177
0x40204ac8: ESP8266WiFiSTAClass::status() at C:\Users\Besso\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.4\libraries\ESP8266WiFi\src\ESP8266WiFiSTA.cpp line 634
0x4020de29: uart_write(uart_t*, char const*, size_t) at C:\Users\Besso\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.4\cores\esp8266\uart.cpp line 509
0x4020a6a4: HardwareSerial::write(unsigned char const*, unsigned int) at C:\Users\Besso\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.4\cores\esp8266/HardwareSerial.h line 164
0x4020a6b0: HardwareSerial::write(unsigned char const*, unsigned int) at C:\Users\Besso\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.4\cores\esp8266/HardwareSerial.h line 165
0x4020a6a4: HardwareSerial::write(unsigned char const*, unsigned int) at C:\Users\Besso\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.4\cores\esp8266/HardwareSerial.h line 164
0x4020aa39: Print::write(char const*) at C:\Users\Besso\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.4\cores\esp8266/Print.h line 62
0x4020ad05: Print::printNumber(unsigned long, unsigned char) at C:\Users\Besso\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.4\cores\esp8266\Print.cpp line 268
0x4020ddcd: uart_write_char(uart_t*, char) at C:\Users\Besso\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.4\cores\esp8266\uart.cpp line 492
0x4020de29: uart_write(uart_t*, char const*, size_t) at C:\Users\Besso\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.4\cores\esp8266\uart.cpp line 509
0x4020adde: Print::print(unsigned long, int) at C:\Users\Besso\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.4\cores\esp8266\Print.cpp line 168
0x4020a6a4: HardwareSerial::write(unsigned char const*, unsigned int) at C:\Users\Besso\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.4\cores\esp8266/HardwareSerial.h line 164
0x4020a6b0: HardwareSerial::write(unsigned char const*, unsigned int) at C:\Users\Besso\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.4\cores\esp8266/HardwareSerial.h line 165
0x4020a6a4: HardwareSerial::write(unsigned char const*, unsigned int) at C:\Users\Besso\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.4\cores\esp8266/HardwareSerial.h line 164
0x4020aa39: Print::write(char const*) at C:\Users\Besso\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.4\cores\esp8266/Print.h line 62
0x4020bae1: String::invalidate() at C:\Users\Besso\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.4\cores\esp8266\WString.cpp line 140
0x4020377d: setup() at C:\Users\Besso\source\arduino\sbc\sunbed02/sunbed02.ino line 132
0x4020ce44: loop_wrapper() at C:\Users\Besso\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.7.4\cores\esp8266\core_esp8266_main.cpp line 194