MQTT publish received from broker - truncated and CRC error

[swarozyn]

Hi

I'm using esp-link with El-Client for IBM Bluemix Watson IOT Platform. Many things works OK, but I've got a problem with PUBLISH request received from IOT broker (not: publish send from device).

This request arrives to ESPLink ok:

603991> MQTT: Recv type=PUBLISH id=0000 len=136; Pend type=NULL id=00
603991> MQTT: Recv PUBLISH qos=0 iotdm-1/mgmt/custom/TM1638/display{"reqId":"e8994312-e116-4e0bbc97-9cff22bb2340","d":{"fields":[{"field":"text","value":"Test"}]}}0 �
603992> MQTT Client: Received topic: iotdm-1/mgmt/custom/TM1638/display, data: {"reqId":"e8994312-e116-4e0b-bc97-9cff22bb2340","d":{"fields":[{"field":"text","value":"Test"}]}}
603993> MQTT: Data cb=0x000004f2 topic=iotdm-1/mgmt/custom/TM1638/display{"reqId":"e8994312-e116-4e0b-bc97-9cff22bb2340","d":{"fields":[{"field":"text","value":"Test"}]}}0 � len=97
603993> cmdResponse: cmd=3 val=1266 argc=2

but is altered during transfer to arduino-side (ElClient). The data is truncated and CRC is invalid (I changed ElClient code not to discard bad-crc packets):

ELC: got 128 @5AD: 3 4F2 2 22 0 69 6F 74 64 6D 2D 31 2F 6D 67 6D 74 2F 63 75 73 74 6F 6D 2F 54 4D 31 36 33 38 2F 64 69 73 70 6C 61 79 61 0 7B 22
 72 65 71 49 64 22 3A 22 65 38 39 39 34 33 31 32 2D 65 31 31 36 2D 34 65 30 62 2D 62 63 39 37 2D 39 63 66 66 32 32 62 62 32 33 34 30 22 2C 22 64
 22 3A 6F 74 64 6D 2D 31 2F 6D 67 6D 74 2F 63 75 73 74 6F 6D 2F 54 4D 31 36 33 38 2F 64 69 73 70
ELC: Invalid CRC
47215
28787
ELC: Process anyway...
RESP_CB: 1266 2
com_mqttDataCb
  s:iotdm-1/mgmt/custom/TM1638/display
  t:{"reqId":"e8994312-e116-4e0b-bc97-9cff22bb2340","d":otdm-1/mgmt/custom/TM1638/disp␒␎␏␐ ␁␀␀ ␃␀␀␀

so - the original request:
iotdm-1/mgmt/custom/TM1638/display{"reqId":"e8994312-e116-4e0bbc97-9cff22bb2340","d":{"fields":[{"field":"text","value":"Test"}]}}

is changed/truncated to:
3 4F2 2 22 0 69 6F 74 64 6D 2D 31 2F 6D 67 6D 74 2F 63 75 73 74 6F 6D 2F 54 4D 31 36 33 38 2F 64 69 73 70 6C 61 79 61 0 7B 22 72 65 71 49 64 22 3A 22 65 38 39 39 34 33 31 32 2D 65 31 31 36 2D 34 65 30 62 2D 62 63 39 37 2D 39 63 66 66 32 32 62 62 32 33 34 30 22 2C 22 64 22 3A 6F 74 64 6D 2D 31 2F 6D 67 6D 74 2F 63 75 73 74 6F 6D 2F 54 4D 31 36 33 38 2F 64 69 73 70
which is:
iotdm-1/mgmt/custom/TM1638/display{"reqId":"e8994312-e116-4e0b-bc97-9cff22bb2340","d":otdm-1/mgmt/custom/TM1638/disp

so the CRC is also bad, which prevents this message from being accepted by ELClient::protoCompletedCb(void)

I wonder what should I change in order to have this working. Could You help?