FTPS: Multiple SSL Channels Failing


#1

I’m using the example FTPS code example and the latest (7.52) firmware.

I get the following error when opening the (SSL wrapped) data channel to transfer a file.

[SSL][ERROR] Can't create SSL channel : (reason) The limited 1 (one) SSL channel is already open.

This seriously breaks any communication that is based on the model of a control channel and a data channel. Is there a work around for this? It looks like the previous SSL library didn’t have this limitation.


#2

Information from Sierra Wireless SSL library developer few months ago:

Based on the above statement, your options would be:

  1. Stick to 1.x library with 7.4x firmware (but you may face random reset)
  2. Request SWIR to implement FTPS. You would have request this through your SWIR FAE or distributor.

#3

Thanks for the confirmation.

Where did you find this info? I searched and read all of the release notes I could findDeveloper Studio Release notes, Security_Library_2_2_0, Security_Library_1_16.