Datastream Python API

Hi,

when attempting to connect to the DataStream API via Python, I receive the following connection error:

ConnectionError: HTTPSConnectionPool(host='product.datastream.com', port=443): Max retries exceeded with url: /dswsclient/V1/DSService.svc/rest/GetToken (Caused by NewConnectionError('<urllib3.connection.VerifiedHTTPSConnection object at 0x00000176423F7780>: Failed to establish a new connection: [Errno 11001] getaddrinfo failed'))

I believe that the IT unit in our bank has not correctly configurated all elements of the firewall. Can I ascertain from this message what should be changed in the firewall to get the connection to work?

Best,

Thomas

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Accepted answers

jonathan.legrand

Hi @thomas.osowski ,

The URL is product.datastream.com
The port number is 443.
The procedure is HTTPS and TLS 1.2.
We suggest NOT connecting to IPs but rather the DNS product.datastream.com

All comments

raksina.samasiri

Hi @thomas.osowski ,

Yes, you could check if your machine can resolve and connect to the host product.datastream.com , as answered in this thread that

You could use network tools to verify that your machine can resolve the host product.datastream.com, and that it can connect to it. You can try:

telnet product.datastream.com 443

If this command fails and you know that there is a proxy server on your network, then you will have to explicitly pass that proxy URL/port to the DSWS library.

thomas.osowski

Dear Raksina,

thanks for your comment. Indeed, the port appears to be blocked.

In order to communicate efficiently which Ports / Procedures / etc has to be opened to our IT Department:

Do you have a comprehensive summary of everything that needs to be opened up regarding the firefall to use Datastream via python?

Best,

Thomas

jonathan.legrand

Hi @thomas.osowski ,

The URL is product.datastream.com
The port number is 443.
The procedure is HTTPS and TLS 1.2.
We suggest NOT connecting to IPs but rather the DNS product.datastream.com

wasin.w

Hello @thomas.osowski

Thank you for contacting us. I am asking the Datastream API team about the question.
I will get back to you as soon as I receive any information from the team.

wasin.w

Hello @thomas.osowski

I just got information from the Datastream API team. The API does not have any network guides. However, the team confirms my colleague @jonathan.legrand answer is the suggested configuration.

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