Ok, I found the fingerprint easily on firefox browser, but I still can't connect to flespi.io. So, do this fingerprint the only requirement to connect it in ssl connection? I mean, probably it require some code from server certificate... but, in this example I can't see where I can put it.. Just more one thing, when I use plain mqtt protocol without ssl it works fine.

ricardotavas Yes, if the code works without ssl, the fingerprint should be enough.
At the moment, I can’t check the example since my esp is not at my place at the moment.
I will try to check the code tomorrow and write to you.

      ok, I am testing in Arduino with the board "Generic ESP8266 Module", and I get from the serial monitor the follow information :

      WiFi connected
      IP address:
      192.168.1.61
      Connecting to mqtt.flespi.io
      Connection failed. Halting execution.

      I hope to hear you soon.. thanks

      ricardotavas
      Please add
      Serial.setDebugOutput(true);
      after
      Serial.begin(115200);
      And send me a debug log.

      UPD:
      Also add to the beginning of the file

      #define DEBUG_SSL
#define DEBUGV

          Here's the result, probably the reset after crash is because the software watchdog.:

          load 0x4010f000, len 1392, room 16
          tail 0
          chksum 0xd0
          csum 0xd0
          v3d128e5c
          ld
          ESP8266: flespi MQTT over SSL example

          Connecting to RGT-CONVIDADO
          scandone
          state: 0 -> 2 (b0)
          state: 2 -> 3 (0)
          state: 3 -> 5 (10)
          add 0
          aid 8
          cnt

          connected with RGT-CONVIDADO, channel 11
          dhcp client start...
          ip:192.168.1.61,mask:255.255.255.0,gw:192.168.1.1
          scandone
          .
          WiFi connected
          IP address:
          192.168.1.61
          Connecting to mqtt.flespi.io
          Connection failed. Halting execution.

          Soft WDT reset

          stack>>>
          ctx: cont
          sp: 3ffffd10 end: 3fffffc0 offset: 01b0
          3ffffec0: 3ffe864a 3ffee830 3ffee868 4020146f

          3ffffed0: 40208d78 00000000 00003a98 feefeffe

          3ffffee0: 3ffee750 3fff0d44 3fff1254 3fff0f44

          3ffffef0: 00000000 00000000 3fff1254 00000000

          3fffff00: 00000000 00000000 00000000 00000000

          3fffff10: 00000000 3fff1fac 3fff0e6c 3fff60fc

          3fffff20: 3fff0d7c 00000000 00000000 00000000

          3fffff30: 00004145 00000255 feef0000 00000000

          3fffff40: 00000000 00000000 00000000 00000000

          3fffff50: 00000000 00000000 00000000 00000000

          3fffff60: 00000000 00000000 00000000 fe000000

          3fffff70: 00000000 00000000 00000000 00000000

          3fffff80: feefef00 00000000 00000000 00000000

          3fffff90: 00000000 00000000 00000000 feefeffe

          3fffffa0: 3fffdad0 00000000 3ffee8b0 4020690c

          3fffffb0: feefeffe feefeffe 3ffe84e8 40100b95

          <<<stack<<<

          ets Jan 8 2013,rst cause:1, boot mode: (3,7)

          Thanks

            • dexif

            • Post #12
            • Edited

            ricardotavas
            I fixed the use of fingerprints, please update the code.
            Now example works with latest libraries and you can only put your token and flash your esp.

                OK, That update fix the problem, now it is working. More one question, is there a way to accept only requests on the 8883 port, and block 1883? I realized that I am publishing on 8883 but I am reading on 1883 in other device..
                Thanks.

                  ricardotavas
                  There is no such feature in flespi MQTT broker. The only way to block these requests is to block them on your side, e.g. using firewall.

                    2 years later
                    4 months later

                    Hi i am trying to make this work with an esp32 but the client.setFingerprint(FLESPI_CERT_FINGERPRINT); isn't in the wificlientsecurity.

                      20 days later
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