CODEWITHSUNDEEP
pythonapipython-requestsurllib
Peter K.
Peter K.

Reputation: 587

Python - Poloniex trading api problems

Despite the number of posts regarding Poloniex / Python trading api access, I still can't figure out how to make this work on Python 3.6. Here is one version which, in my view, should word perfectly, but doesn't:

req['command'] = 'requestBalances'
req['nonce'] = int(time.time() * 1000)
post_data = urllib.parse.urlencode(req).encode('utf-8')
hmac_key = self.Secret.encode('utf-8')

sign = hmac.new(hmac_key, post_data, hashlib.sha512)
sign = sign.hexdigest()

 headers = {
    'Sign': sign,
     'Key': self.APIKey
  }

  res = requests.post('https://poloniex.com/tradingApi', data=post_data, headers=headers)

If I run the above, with the correct api / secret codes, I get an "invalid command" error.

Interestingly, if I replace the requests.post function with :

req = urllib.request.Request(url='https://poloniex.com/tradingApi', data=post_data, headers=headers)
res = urllib.request.urlopen(req,timeout=5)

then I don't get an error, but just an empty bytes array (after res.read())

Any tips on how to make this work would be greatly appreciated.

Upvotes: 1

Views: 587

Answers (1)

Peter K.
Peter K.

Reputation: 587

The solution is to include:

"Content-type": "application/x-www-form-urlencoded"

in the header, i.e. : 

headers = {
    "Content-type": "application/x-www-form-urlencoded",
    'Sign': sign,
    'Key': self.APIKey
}

Strangely, none of the other solutions I have seen has included this additional field, but there we go.

PS. the alternative using urllib.request still just returns an empty byte string.

Upvotes: 2

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