'Connection aborted.', error(104, 'Connection reset by peer'

oga · n00b Joined: 31 May 2018 Posts: 3

Good afternoon,

I have a LINUX machine with the OpenNao distro (based on GENTOO). This machine has Python 2.7.3. I do not have root permissions.
You can download an executable image in Virtualbox (OpenNAO OS VirtualBox 2.1.2) from the following link (you will probably have to create an account):

https://community.ald.softbankrobotics.com/en/resources/software/language/en-gb?sort_by=weight&sort_order=ASC&page=1

My problem is that I am trying to make a call request to an AZURE server that has TLS 1.2, with the following code:

John R. Graham · Posted: Thu May 31, 2018 4:22 pm Post subject:

Moved from Networking & Security to Unsupported Software. Not about Gentoo (derivative distributions don't qualify) so it fits better here.

- John
_________________
I can confirm that I have received between 0 and 499 National Security Letters.

Hu · Moderator Joined: 06 Mar 2007 Posts: 21624

oga · n00b Joined: 31 May 2018 Posts: 3

Thanks for the tips of BBCode styles to use, and for moving the subject to the appropriate section.

The virtual machine is really a SDK (Software Development Kit) tool provided where to do tests. In fact, this machine including root account. This machine is the same installed on a robot (Pepper Aldebaran), where there really is no root account credentials.

Both with the virtual machine and with the robot I get the same error when trying to make the request to the remote server.
In Windows 10 and Ubuntu, I get a OK response from the server.

The original installation of python is in the following directory
/usr/lib/python2.7
If you want to overwrite a library, it must be done at the user level in the following directory
/var/persistent/home/nao/.local/lib/python2.7/site-packages

I tried to install in the virtual machine nmap or telnet to check the port, but I have not succeeded.
Please, could you tell me how I can check if the virtual machine connect to port 443 of the remote Azure host?.

Are you sure it's not a TLS error?
As I read on the following link TLS 1.0 is not supported for Azure servers:
https://social.msdn.microsoft.com/Forums/en-US/9dace9cb-a1a8-4f77-af26-324bc2b6740e/tls-plans-for-azure-app-service?forum=windowsazurewebsitespreview

Any question or suggestion is welcome, I'm really quite lost.
Thank you very much for your help!

Hu · Moderator Joined: 06 Mar 2007 Posts: 21624

If they built bash with USE=net, you could abuse its redirection facility. Try > /dev/tcp/host/port to ask Bash to make a network connection.

You could also try to debug why you cannot install those other tools.

"Connection reset by peer" is a standard error message for TCP. Some other layer could have reused that message, but that is unlikely.

oga · n00b Joined: 31 May 2018 Posts: 3

Hu,

Thanks for the tips.

I could not execute the instruction to check the network connection.

I would not know how to debug the causes of the error.

Regarding the causes of the error, I am convinced that it is due to the incompatibility of the TLS version used by the Python library, when making the request to the AZURE server.
I made a "work-around" by executing the request from a script programmed in JAVA. In this way I can successfully perform the request to the server.
After which I will embed this JAVA script in the PYTHON program. I know it's not the best option, but at least it works.

If you consider it appropriate we can close the thread, and unless someone comes up with how to solve the PYTHON problem.

Either way, I am very grateful for the treatment received. You are a great community!
Thanks!

Hu · Moderator Joined: 06 Mar 2007 Posts: 21624

Threads are only closed when they violate forum rules. Otherwise, they are marked solved and people cease posting to them because there is nothing more to say.