nordnet-stream

Streams values from Nordnet's web sockets.

Caveat

Using this thing may be against Nordnet's T&C; I didn't read them with a fine enough comb to figure out the case. However, the behavior of the websocket client here is more or less exactly what your web browser would do when browsing the site (aside from very non-graceful connection closure).

As prescribed by the license, too,

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Now that that's out of the way...

Usage

• Python 3.7 required (async ahoy!).
• Install requirements into a virtualenv.
• Set the NEXT_COOKIE envvar to the value (leading octothorpe included) of the NEXT= cookie you have in your Nordnet session.
• Run python nstream_chart_client.py 17085951, where 17085951 is the ID of the instrument to track; you can see it in the URL, e.g. https://www.nordnet.fi/markkinakatsaus/something/17085951-something.