Error on handshake

My code starts like this:

import eikon as ek
ek.set_app_key("my_key")

I never got any errors. However, lately it hasn't been working anymore and I'm getting the following error:

2026-02-05 10:15:43,992 P[32556] [MainThread 44800] Error: no proxy address identified.

Check if Eikon Desktop or Eikon API Proxy is running.

2026-02-05 10:15:43,998 P[32556] [MainThread 44800] Error on handshake url http://127.0.0.1:None/api/handshake : InvalidURL("Invalid port: 'None'")
2026-02-05 10:15:43,999 P[32556] [MainThread 44800] Error on handshake url http://127.0.0.1:None/api/handshake : InvalidURL("Invalid port: 'None'")
2026-02-05 10:15:44,001 P[32556] [MainThread 44800] Port number was not identified, cannot send any request

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Accepted answers

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Jirapongse

@CAUE

Thank you for reaching out to us.

The Python environment may have been updated, or the versions of its dependency libraries may have changed.

The Eikon Data API is now a feature‑complete product, and we no longer provide updates for it. Therefore, it may not work when the new versions of the dependency libraries. Please upgrade your application to use the LSEG Data Library for Python instead. For more details, refer to the Essential Guide to the Data Libraries – Generations of Python libraries (EDAPI, RDP, RD, LD) article.

You can also refer to this Eikon Data API and Refinitiv Data Library - Troubleshooting article.

CAUE

Hi @Jirapongse , thank you for you answer!

I checked the versions of the workspace and Eikon and they are the latest. I accessed the status link and the API appears to be active. I created a new APPKEY and the same orientation keeps happening at the terminal. Can you help me?

2026-02-06 12:31:24,444 P[31100] [MainThread 8704] Send GET request to http://127.0.0.1:9000/api/status to detect API Proxy...
2026-02-06 12:31:24,446 P[31100] [MainThread 8704] Request to http://127.0.0.1:9000/api/status
headers = {'x-tr-applicationid': 'xxx'}
params = None
2026-02-06 12:31:24,450 P[31100] [MainThread 8704] HTTP request failed: AsyncLibraryNotFoundError('unknown async library, or not in async context')
2026-02-06 12:31:24,450 P[31100] [MainThread 8704] Error on checking proxy url http://127.0.0.1:9000/api/status : AsyncLibraryNotFoundError('unknown async library, or not in async context')
2026-02-06 12:31:24,453 P[31100] [MainThread 8704] Retrieved port 9000 value from .portIntUse isn't valid.
2026-02-06 12:31:24,454 P[31100] [MainThread 8704] Warning: file .portInUse was not found. Try to fallback to default port number.
2026-02-06 12:31:24,454 P[31100] [MainThread 8704] Try defaulting to port 9000...
2026-02-06 12:31:24,454 P[31100] [MainThread 8704] Send GET request to http://127.0.0.1:9000/api/status to detect API Proxy...
2026-02-06 12:31:24,454 P[31100] [MainThread 8704] Request to http://127.0.0.1:9000/api/status
headers = {'x-tr-applicationid': 'xxx'}
params = None
2026-02-06 12:31:24,455 P[31100] [MainThread 8704] HTTP request failed: AsyncLibraryNotFoundError('unknown async library, or not in async context')
2026-02-06 12:31:24,456 P[31100] [MainThread 8704] Error on checking proxy url http://127.0.0.1:9000/api/status : AsyncLibraryNotFoundError('unknown async library, or not in async context')
2026-02-06 12:31:24,456 P[31100] [MainThread 8704] Default proxy port #9000 failed
2026-02-06 12:31:24,456 P[31100] [MainThread 8704] Try defaulting to port 9060...
2026-02-06 12:31:24,456 P[31100] [MainThread 8704] Send GET request to http://127.0.0.1:9060/api/status to detect API Proxy...
2026-02-06 12:31:24,457 P[31100] [MainThread 8704] Request to http://127.0.0.1:9060/api/status
headers = {'x-tr-applicationid': 'xxx'}
params = None
2026-02-06 12:31:24,457 P[31100] [MainThread 8704] HTTP request failed: AsyncLibraryNotFoundError('unknown async library, or not in async context')
2026-02-06 12:31:24,458 P[31100] [MainThread 8704] Error on checking proxy url http://127.0.0.1:9060/api/status : AsyncLibraryNotFoundError('unknown async library, or not in async context')
2026-02-06 12:31:24,458 P[31100] [MainThread 8704] Default proxy port #9060 failed
2026-02-06 12:31:24,458 P[31100] [MainThread 8704] Error: no proxy address identified.
Check if Eikon Desktop or Eikon API Proxy is running.
2026-02-06 12:31:24,458 P[31100] [MainThread 8704] Try to handshake on url http://127.0.0.1:None/api/handshake...2026-02-06 12:31:24,459 P[31100] [MainThread 8704] Request to http://127.0.0.1:None/api/handshake
headers = {'Content-Type': 'application/json', 'x-tr-applicationid': 'xxx'}
params = None
2026-02-06 12:31:24,459 P[31100] [MainThread 8704] HTTP request failed: InvalidURL("Invalid port: 'None'")
2026-02-06 12:31:24,459 P[31100] [MainThread 8704] Error on handshake url http://127.0.0.1:None/api/handshake : InvalidURL("Invalid port: 'None'")
2026-02-06 12:31:24,460 P[31100] [MainThread 8704] Error on handshake url http://127.0.0.1:None/api/handshake : InvalidURL("Invalid port: 'None'")
2026-02-06 12:31:24,460 P[31100] [MainThread 8704] Port number was not identified, cannot send any request
2026-02-06 12:31:24,460 P[31100] [MainThread 8704] Received notification for closed streaming session 0
2026-02-06 12:31:24,460 P[31100] [MainThread 8704] Received notification for closed streaming session 0
2026-02-06 12:31:24,461 P[31100] [MainThread 8704] Init a Desktop session with new app_key

raksina.samasiri

Hi @CAUE ,

It seems to require anyio version 3.x or 4.x.. Could you please check your anyio python library version or update it to version mentioned with the command below.

pip install anyio --upgrade

pip install anyio==<version> --upgrade

You can check the versions of anyio from the PyPI history page.

However, I strongly recommend you using new and strategic the LSEG Data Library, more detail can be found at.

Essential Guide to the Data Libraries - Generations of Python library (EDAPI, RDP, RD, LD) | Devportal
Upgrade from using Eikon Data API to the Data library | Devportal

CAUE

Hello, raksina,

I am switching to the lseg library now. I can access and extract the price history, but I have a question regarding a code:

NAPCNWEAMc

We used to get the close price for this code. At the moment, none of the prices in the existing fields of the lseg API match the price that we were previously extracting. Has this information been discontinued?

Jirapongse

@CAUE

The code could be like this:

df = ld.get_history(universe='NAPCNWEAMc1',
                    fields = ['EURO_CLOSE','HIGH_1','LOW_1','OPEN_PRC'])
df

If this doesn't answer your question, please share the previous code that you are using.

raksina.samasiri

Hi @CAUE ,

Additional to my colleague's reply, you may find the available fields by not specifying the fields parameter as for Data library ld.get_history, all available historical fields of instrument will be returned in the result if no field is specified.

For example,

df = ld.get_history(universe='NAPCNWEAMc1')
df

While the ek.get_timeseries retrieves data only from the default view and map them to OPEN, HIGH, LOW, and CLOSE fields.) Then you can pick the fields you're interested in. If you want to know the detail/description of each field, you can use https://developers.lseg.com/en/video-catalog/data-item-browser or raise a content ticket at https://support.lseg.com/s/

More detail can be found in https://developers.lseg.com/en/article-catalog/article/Upgrade-from-using-Eikon-Data-API-to-the-Data-library#historical-data

CAUE

Thanks for the answer guys,

I'm trying to extract the historical prices with the same script. It seems to be different from what we were usually extracting. Follow attached.

nap.png

raksina.samasiri

Hi @CAUE ,

Which fields are you using? Could you please provide the code you used here as well.

Here's the result I got from the code that Jirapongse posted

CAUE

Hi Raksina,

The image on the left refers to the Eikon extraction (which is no longer working). The image on the right only uses:

df = ld.get_history(universe='NAPCNWEAMc1')

I am capturing all fields, by definition, and no price (US, EUR...) is matching.

raksina.samasiri

Hi @CAUE ,

This is the result I get, the left section is using Eikon Data API, and the right on is using LSEG Data Library. It seems Eikon's CLOSE field is the same as 'EURO_CLOSE' field in the LSEG Data library.

Or could you please provide your code of your image on the left so I can try to replicate.

CAUE

Hi Raksina,

I'm not able to use Eikon because of those errors. But, in this case, the prices I have stored are different from all of those you extracted. They are the ones I sent in the last screenshot.

Jirapongse

@CAUE

According to the screenshot, the historical prices from ek.get_timeseries and ld.get_history are similar.

We are unable to verify the data. You man need to contact the content support team directly via LSEG Support to check which data is correct. You may include the link to this question in the query so the support team will understand the current context.

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