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ARMmbed / mbed-client-example-6lowpan

DEPRECATED: Example demonstrating 6LoWPAN mesh networking
https://cloud.mbed.com/docs/current
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Reconnections fail after 3 attempts. #37

Closed SeppoTakalo closed 8 years ago

SeppoTakalo commented 8 years ago

When running the application on 6LoWPAN network it re-creates the interface classes after each network failures, this causes the re-connections to start failing after 3 re-connections.

After this, I will constantly see:

[DBG ][mbedclient]: waiting 5s before sending registration...
[DBG ][mbedclient]: send_registration()
[ERR ][mbedclient]: error() 6

How to re-produce:

  1. Modify application so that when receiving object_registered callback, you destroy the connection and restart the registration proses.
  2. Run application.
  3. Observe that after 3 succesful registrations, it starts to fail.
SeppoTakalo commented 8 years ago

CC: @yogpan01 @artokin @juhhei01

yogpan01 commented 8 years ago

mbed client is using mbed OS socket and when any application deletes mbed client instance, it will call mbedSocket destructor, it is the responsibility of underlying porting layer to ensure that proper cleanup happens.

SeppoTakalo commented 8 years ago

Yes, of course. I just CC:d that to you also because you might be interested, and you should be familiar with this issue. We continue the investigation to find to root cause for this.

rainierwolfcastle commented 8 years ago

ARM Internal Ref: ONME-2072

artokin commented 8 years ago

@AnttiKauppila , would you please help on this issue? It looks like there is something wrong in SSL handshake, in M2MConnectionHandlerPimpl::dns_handler, start_connecting_non_blocking() is returning error.

AnttiKauppila commented 8 years ago

Fixed in mbed-client-mbedtls version 1.0.8