[GNC] Yahoo JSON - throwing unauthorized error

[Bruce Schuck]

On 5/6/23 17:51, David G. Pickett wrote:

> Yeah, it's back.??
 >     - Is Yahoo aware of their server rejects???
>     - Is there some magic cookie or such we need to be authorized??
 >       Many previous fixes proposed, which did not seem to prevent
 >       its return!

I don't believe the APIs F::Q uses in the YahooJSON.pm module are meant 
for general public use. Yes, they are calls made when finance.yahoo.com 
web pages load, but I'm thinking that Yahoo is trying to use CORs 
filters, cookies, and other mechanisms to limit access.

Who's to say that after spending time to change the module to utilize a 
different URL, it also doesn't start returning errors because Yahoo is 
securing how people can fetch the securities data.

Companies pay big $$ for realtime access to the securities data, and 
with that comes licensing and limitations on how it can be shared, 
resold, etc. That is why you see many companies use API keys, and the 
freely available keys have limited access. Years ago (late 1980s, early 
1990s) I worked for a company that paid for a satellite feed from 
Comstock I believe. It was data for our services provided to a few 
securities and financial services companies. It was my project to write 
the collection and parsing programs on Unix/Linux when we first 
purchased that feed.

- Bruce S.