Algosdk Forbidden Error

post by isha on Jun 9, 2023

I am trying to transfer Algos from one account to another using api.

This is the error I am getting

Amount from function 2420000
Inside Operations---------------- <function algotransfer at 0x7f67f1ab07b8>
27.97.133.234 - - [09/Jun/2023 10:22:42] "POST /useralgopayment HTTP/1.1" 500 -
Traceback (most recent call last):
  File "/home/azureuser/.local/lib/python3.6/site-packages/algosdk/v2client/algod.py", line 78, in algod_request
    resp = urlopen(req)
  File "/usr/lib/python3.6/urllib/request.py", line 223, in urlopen
    return opener.open(url, data, timeout)
  File "/usr/lib/python3.6/urllib/request.py", line 532, in open
    response = meth(req, response)
  File "/usr/lib/python3.6/urllib/request.py", line 642, in http_response
    'http', request, response, code, msg, hdrs)
  File "/usr/lib/python3.6/urllib/request.py", line 570, in error
    return self._call_chain(*args)
  File "/usr/lib/python3.6/urllib/request.py", line 504, in _call_chain
    result = func(*args)
  File "/usr/lib/python3.6/urllib/request.py", line 650, in http_error_default
    raise HTTPError(req.full_url, code, msg, hdrs, fp)
urllib.error.HTTPError: HTTP Error 403: Forbidden

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/azureuser/.local/lib/python3.6/site-packages/flask/app.py", line 2091, in __call__
    return self.wsgi_app(environ, start_response)
  File "/home/azureuser/.local/lib/python3.6/site-packages/flask/app.py", line 2076, in wsgi_app
    response = self.handle_exception(e)
  File "/home/azureuser/.local/lib/python3.6/site-packages/flask_cors/extension.py", line 165, in wrapped_function
    return cors_after_request(app.make_response(f(*args, **kwargs)))
  File "/home/azureuser/.local/lib/python3.6/site-packages/flask/app.py", line 2073, in wsgi_app
    response = self.full_dispatch_request()
  File "/home/azureuser/.local/lib/python3.6/site-packages/flask/app.py", line 1518, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/home/azureuser/.local/lib/python3.6/site-packages/flask_cors/extension.py", line 165, in wrapped_function
    return cors_after_request(app.make_response(f(*args, **kwargs)))
  File "/home/azureuser/.local/lib/python3.6/site-packages/flask/app.py", line 1516, in full_dispatch_request
    rv = self.dispatch_request()
  File "/home/azureuser/.local/lib/python3.6/site-packages/flask/app.py", line 1502, in dispatch_request
    return self.ensure_sync(self.view_functions[rule.endpoint])(**req.view_args)
  File "/home/azureuser/algorand/TraceChain/api/app.py", line 44, in useralgopayment
    txn = algopayments.algo_transfer(sender,receiver,amount)
  File "/home/azureuser/algorand/TraceChain/api/auction_demo/algopayments.py", line 28, in algo_transfer
    amount = amount
  File "/home/azureuser/algorand/TraceChain/api/auction_demo/auction/operations.py", line 28, in algotransfer
    sp=client.suggested_params(),
  File "/home/azureuser/.local/lib/python3.6/site-packages/algosdk/v2client/algod.py", line 337, in suggested_params
    res = self.algod_request("GET", req, **kwargs)
  File "/home/azureuser/.local/lib/python3.6/site-packages/algosdk/v2client/algod.py", line 85, in algod_request
    raise error.AlgodHTTPError(e, code)
algosdk.error.AlgodHTTPError: Forbidden

I am using purestake token and url for the same.

There are 2 other apifor token transfer which are working being on same token and url.

Can anyone help me here?

algod_address = ""
algod_token = "xxx"
headers = {
   "X-API-Key": algod_token,
}
algod_client = algod.AlgodClient(algod_token, algod_address,headers)

post by Tim on Jun 9, 2023

That is strange, typically you’d only see a 403 when the path is invalid, or the api-key is invalid.

Can you share the code that makes the call, you can mail me if you don’t want to post it.

post by isha on Jun 12, 2023

No problem I can share it here

def algo_transfer(sender,receiver,amount):
    client = getAlgodClient()
    sender = sender
    print("Sender from function",sender)
    receiver = receiver
    print("Receiver from function",receiver)
    amount = amount
    print("Amount from function",amount)
    txn = algotransfer(
        client = client,
        sender = sender,
        receiver = receiver,
        amount = amount
    )
    print("TestAlgo_transfer", txn)
    print("FUNCTION----",algo_transfer)
    return txn

def algotransfer(
    client: AlgodClient,
    sender: Account,
    receiver: Account,
    amount : int
):
    print("Inside Operations----------------",algotransfer)
    txn = transaction.PaymentTxn(
        sender=sender,
        receiver=receiver,
        amt=amount,
        sp=client.suggested_params(),
    )
    print("Inside Operations txn-----------------",txn)
    txns =  encoding.msgpack_encode(txn)
    return txns

And the api used to call this is given below

@app.route('/useralgopayment', methods=['GET', 'POST'])
@cross_origin()
def useralgopayment():
    request_data = request.get_json()
    print("Inside UserALGO",request)
    print("Inside UserALGO2",request_data)
    sender = request_data['body']['Sender']
    receiver = request_data['body']['Receiver']
    amount = request_data['body']['Amount']
    print("Inside UserALGO3---------",request_data)
    print("Sender",sender)
    print("Receiver",receiver)
    print("Type of amount: ", type(amount))

txn = algopayments.algo_transfer(sender,receiver,amount)
    print("Transaction------",txn)

return json.dumps({'status': 'Transaction Created','transaction' : txn})

post by fabrice on Jun 12, 2023

Can you show the algod_address you used?

post by isha on Jun 13, 2023

Its the algo_address from purestake testnet

https://testnet-algorand.api.purestake.io/ps2

post by fabrice on Jun 13, 2023

Can you try to do it using curl on the terminal:

curl -v -X GET "https://testnet-algorand.api.purestake.io/ps2/v2/transactions/params" -H "x-api-key:YourKey"

What do you see?

Can you compare you example with PureStake Developer Portal?

post by isha on Jun 14, 2023

Thanks @Tim and @fabrice it got resolved

There 2 files in my file structure on is the token-creation where all the functionalities of token are transfer option, freeze, unfreeze etc.

And the other one is setup.py where there are basic getGenesisAccounts KMD address and all is used.

So in that file I had just given this

algod_address = ""
algod_token = "xxx"
algod_client = algod.AlgodClient(algod_token, algod_address)

So I added headers there as well and it worked

algod_address = ""
algod_token = "xxx"
headers = {
   "X-API-Key": algod_token,
}
algod_client = algod.AlgodClient(algod_token, algod_address,headers)