Don't think it is that, as other OAuth clients were working fine and also the 
wiki example works; in fact I have got a complete OAuth flow now working, using 
the documented method on the wiki using the 'request' package, but just thought 
I'd try something else as that was deprecated.

Will try one or two other packages and see if they work.

Thanks,
Nick
________________________________
From: Mateusz Konieczny via dev <dev@openstreetmap.org>
Sent: 16 July 2020 17:00
Cc: dev@openstreetmap.org <dev@openstreetmap.org>
Subject: Re: [OSM-dev] OAuth difficulties from node.js client

Osm website had sone downtime,
maybe your code is ok?


16 Jul 2020, 17:04 by nick.whitel...@solent.ac.uk:
Hello everyone,

Realise this might be a difficult one, but posting it here in case anyone's 
encountered similar problems or if anyone can obviously see what's wrong with 
the request (see below).

I'm trying to connect to the OSM OAuth API request_token endpoint from a 
node.js based client.

If I use the recommended example on the wiki for node.js, it works correctly (I 
get a token and a secret back), _however_ the 'request' module is now 
deprecated so probably not the best thing to use, even though it handles oauth 
automatically.

I found an alternative module which generates the correct parameters to send to 
the request token endpoint at:

https://www.npmjs.com/package/oauth-1.0a

and it generated parameters which look vaguely sensible:

{ oauth_consumer_key: 'EcdM735JygrmO42fzw8SIfbFUMDy1ShVY5bBnefn',
  oauth_nonce: 'cNvPEgdgjvQWX5FgS56XkyLaMhQNggmh',
  oauth_signature_method: 'HMAC-SHA1',
  oauth_timestamp: 1594910535,
  oauth_version: '1.0',
  oauth_callback: 'http://localhost/app/',
  oauth_signature: 'WuYA7G8s4qPCht+cF7t7FpTP0ck=' }


However if I send that to the request_token endpoint (using node-fetch) I get a 
500 error.

Fiurthermore, if I use curl to send the same data to the endpoint, I also get a 
500:

curl --data 
"oauth_consumer_key=EcdM735JygrmO42fzw8SIfbFUMDy1ShVY5bBnefn&oauth_nonce=cNvPEgdgjvQWX5FgS56XkyLaMhQNggmh&oauth_signature_method=HMAC-SHA1&oauth_timestamp=1594910535&oauth_version=1.0&oauth_callback=http%3A%2F%2Flocalhost%2Fapp%2F&oauth_signature=WuYA7G8s4qPCht%2BcF7t7FpTP0ck%3D"
 https://www.openstreetmap.org/oauth/request_token

I'm guessing something's wrong with the signing process. I used the examples 
given in the oauth-1.0a documentation to generate the parameters.

I'm surprised I'm getting a 500 rather than say a 400.


Thanks,
Nick

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