URL Open Error

[Bhaney44]

I'm working through the LaylaCoin Tutorial in the Algorand Developer Portal. First of all, Layla is too cute. Second, I made it pretty smoothly through step two, creating addresses and passphrases, as well as a hash for LaylaGyoza.jpg. But, I ran into a problem on step three.

>>> from main import create
>>> from config import creator_passphrase
>>> create(creator_passphrase)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Users/brianhaney/node/LaylaCoin/main.py", line 22, in create
    data = add_network_params(asset_details, client)
  File "/Users/brianhaney/node/LaylaCoin/util.py", line 44, in add_network_params
    params = client.suggested_params()
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/algosdk/algod.py", line 245, in suggested_params
    return self.algod_request("GET", req, **kwargs)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/algosdk/algod.py", line 75, in algod_request
    resp = urlopen(req)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/urllib/request.py", line 222, in urlopen
    return opener.open(url, data, timeout)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/urllib/request.py", line 525, in open
    response = self._open(req, data)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/urllib/request.py", line 548, in _open
    'unknown_open', req)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/urllib/request.py", line 503, in _call_chain
    result = func(*args)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/urllib/request.py", line 1387, in unknown_open
    raise URLError('unknown url type: %s' % type)
urllib.error.URLError: <urlopen error unknown url type: 127.0.0.1>

I'm working on debugging this now. My first impression is this is a url error, but I am not sure where exactly the url error is coming from. The error <urlopen error unknown url type: 127.0.0.1> directed me to config.py where I set the algod_address.

# Credentials to connect through an algod client
algod_address = "127.0.0.1:8080"

I got the address by running cat $ALGORAND_DATA/algod.net, but I am not sure this is the correct data to include in setting the algod_address variable. I think this is my error for not inputting the right data to the variable.

[Bhaney44]

I found the error. I did not connect an algod client to a TestNet node first. I was running my node on mainnet-v1.0. The tutorial states:

"Some of these extra parameters rely on some network state (like current round) so we will need an algod client connected to a TestNet node. Open config.py and enter values for your algod_address and algod_token for TestNet."

So, I am going to work on setting up a client connected to a TestNet node. And then run create(creator_passphrase) again.

[Bhaney44]

Update
I successfully switched to the TestNet by replacing the genesis json file. However, I am still getting the URL error running:

>>> from main import create
>>> from config import creator_passphrase
>>> create(creator_passphrase)

Error:
urllib.error.URLError: <urlopen error [Errno 61] Connection refused>

The problem is in config.py the code reads:

algod_address = "https://api.host.com"

I know the URL is wrong, but I have no idea what a correct algod_address would look like. I tried using:

algod_address = "GYOVUXBMA5C55BI4YO27WKI4QQIMXJHVXMMCFKEOJMZV6TRJJDJ6V6NTAU"

from the receiver address in the tutorial, but I got the same URL error.

[Bhaney44]

Update

I switched the config file back to:

algod_address = "127.0.0.1:8080"

I think this is the correct address. But I am still getting the same error:

(AlgoEnv) Brians-MacBook-Pro:LaylaCoin brianhaney$ python3 run.py
Traceback (most recent call last):
  File "run.py", line 14, in <module>
    create(creator_passphrase)
  File "/Users/brianhaney/node/LaylaCoin/main.py", line 22, in create
    data = add_network_params(asset_details, client)
  File "/Users/brianhaney/node/LaylaCoin/util.py", line 44, in add_network_params
    params = client.suggested_params()
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/algosdk/algod.py", line 245, in suggested_params
    return self.algod_request("GET", req, **kwargs)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/algosdk/algod.py", line 75, in algod_request
    resp = urlopen(req)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/urllib/request.py", line 222, in urlopen
    return opener.open(url, data, timeout)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/urllib/request.py", line 525, in open
    response = self._open(req, data)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/urllib/request.py", line 548, in _open
    'unknown_open', req)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/urllib/request.py", line 503, in _call_chain
    result = func(*args)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/urllib/request.py", line 1387, in unknown_open
    raise URLError('unknown url type: %s' % type)
urllib.error.URLError: <urlopen error unknown url type: 127.0.0.1>

It still seems like there is a URL error. I would sincerely appreciate any thoughts or suggestions. Thanks!

[Bhaney44]

Update

I fixed the URL error. The solution was that the algod_address variable has to take the following form:

algod_address = "http://localhost:4001"

The last four digits are unique for each node and can be found by running:

cat $ALGORAND_DATA/algod.net

However, I have a new error now.

(AlgoEnv) Brians-MacBook-Pro:LaylaCoin brianhaney$ python3 run.py
Traceback (most recent call last):
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/algosdk/algod.py", line 75, in algod_request
    resp = urlopen(req)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/urllib/request.py", line 222, in urlopen
    return opener.open(url, data, timeout)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/urllib/request.py", line 531, in open
    response = meth(req, response)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/urllib/request.py", line 641, in http_response
    'http', request, response, code, msg, hdrs)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/urllib/request.py", line 569, in error
    return self._call_chain(*args)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/urllib/request.py", line 503, in _call_chain
    result = func(*args)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/urllib/request.py", line 649, in http_error_default
    raise HTTPError(req.full_url, code, msg, hdrs, fp)
urllib.error.HTTPError: HTTP Error 400: Bad Request

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "run.py", line 14, in <module>
    create(creator_passphrase)
  File "/Users/brianhaney/node/LaylaCoin/main.py", line 25, in create
    txinfo = sign_and_send(txn, passphrase, client)
  File "/Users/brianhaney/node/LaylaCoin/util.py", line 58, in sign_and_send
    client.send_transaction(stxn, headers={'content-type': 'application/x-binary'})
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/algosdk/algod.py", line 291, in send_transaction
    **kwargs)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/algosdk/algod.py", line 277, in send_raw_transaction
    return self.algod_request("POST", req, data=txn, headers=tx_headers, **kwargs)["txId"]
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/algosdk/algod.py", line 83, in algod_request
    raise error.AlgodHTTPError(raisex)
algosdk.error.AlgodHTTPError: transaction {_struct:{} Sig:[203 160 120 179 177 71 104 120 240 218 58 79 99 21 58 96 232 225 244 233 203 236 132 66 249 96 45 213 200 13 243 20 29 187 251 248 122 229 120 184 61 110 109 170 227 221 91 222 179 189 134 156 91 29 68 186 92 221 123 23 109 255 121 1] Msig:{_struct:{} Version:0 Threshold:0 Subsigs:[]} Lsig:{_struct:{} Logic:[] Sig:[0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0] Msig:{_struct:{} Version:0 Threshold:0 Subsigs:[]} Args:[]} Txn:{_struct:{} Type:acfg Header:{_struct:{} Sender:6U4X6KSDTVNVLNKTQAQUWSVSI4LQGPOMSSO34XUJCDW5CXCUSYUBJLTVCI Fee:{Raw:1000} FirstValid:468624 LastValid:469624 Note:[] GenesisID:testnet-v1.0 GenesisHash:JBR3KGFEWPEE5SAQ6IWU6EEBZMHXD4CZU6WCBXWGF57XBZIJHIRA Group:AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA Lease:[0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0] RekeyTo:AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAY5HFKQ} KeyregTxnFields:{_struct:{} VotePK:[0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0] SelectionPK:[0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0] VoteFirst:0 VoteLast:0 VoteKeyDilution:0 Nonparticipation:false} PaymentTxnFields:{_struct:{} Receiver:AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAY5HFKQ Amount:{Raw:0} CloseRemainderTo:AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAY5HFKQ} AssetConfigTxnFields:{_struct:{} ConfigAsset:0 AssetParams:{_struct:{} Total:1000000 Decimals:6 DefaultFrozen:false UnitName:Gyoza AssetName:LaylaCoin URL:LaylaGyoza.jpg MetadataHash:[79 136 253 242 209 254 238 150 43 249 240 182 178 141 13 181 206 100 41 35 155 86 206 164 129 166 185 189 14 247 97 108] Manager:6U4X6KSDTVNVLNKTQAQUWSVSI4LQGPOMSSO34XUJCDW5CXCUSYUBJLTVCI Reserve:6U4X6KSDTVNVLNKTQAQUWSVSI4LQGPOMSSO34XUJCDW5CXCUSYUBJLTVCI Freeze:6U4X6KSDTVNVLNKTQAQUWSVSI4LQGPOMSSO34XUJCDW5CXCUSYUBJLTVCI Clawback:6U4X6KSDTVNVLNKTQAQUWSVSI4LQGPOMSSO34XUJCDW5CXCUSYUBJLTVCI}} AssetTransferTxnFields:{_struct:{} XferAsset:0 AssetAmount:0 AssetSender:AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAY5HFKQ AssetReceiver:AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAY5HFKQ AssetCloseTo:AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAY5HFKQ} AssetFreezeTxnFields:{_struct:{} FreezeAccount:AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAY5HFKQ FreezeAsset:0 AssetFrozen:false} ApplicationCallTxnFields:{_struct:{} ApplicationID:0 OnCompletion:NoOpOC ApplicationArgs:[] Accounts:[] ForeignApps:[] ForeignAssets:[] LocalStateSchema:{_struct:{} NumUint:0 NumByteSlice:0} GlobalStateSchema:{_struct:{} NumUint:0 NumByteSlice:0} ApprovalProgram:[] ClearStateProgram:[]} CompactCertTxnFields:{_struct:{} CertRound:0 CertType:0 Cert:{_struct:{} SigCommit:AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA SignedWeight:0 SigProofs:[] PartProofs:[] Reveals:map[]}}} AuthAddr:AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAY5HFKQ} invalid : asset transaction not supported

I will continue debugging as time permits. Thanks!

[miaoye26]

Hi,
I am having similar errors here, would be helpful if author of the code provide an update if there is any issue with existing code base. Tried every thing with multiple accounts, pretty sure I rule those config issue out.

`from config import creator_passphrase

create(creator_passphrase)
Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/algosdk/algod.py", line 75, in algod_request
resp = urlopen(req)
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/urllib/request.py", line 214, in urlopen
return opener.open(url, data, timeout)
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/urllib/request.py", line 523, in open
response = meth(req, response)
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/urllib/request.py", line 632, in http_response
response = self.parent.error(
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/urllib/request.py", line 561, in error
return self._call_chain(*args)
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/urllib/request.py", line 494, in _call_chain
result = func(*args)
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/urllib/request.py", line 641, 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 "", line 1, in
File "/Users/miaoye26/Repo/algorand-tutorials-python-master/create-layla-coin/main.py", line 22, in create
data = add_network_params(asset_details, client)
File "/Users/miaoye26/Repo/algorand-tutorials-python-master/create-layla-coin/util.py", line 48, in add_network_params
params = client.suggested_params()
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/algosdk/algod.py", line 245, in suggested_params
return self.algod_request("GET", req, **kwargs)
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/algosdk/algod.py", line 83, in algod_request
raise error.AlgodHTTPError(raisex)
algosdk.error.AlgodHTTPError: Missing Authentication Token`

[Bhaney44]

Hi @miaoye26 I am still working on figuring this out. It looks like your main error read outs are:

urllib.error.HTTPError: HTTP Error 403: Forbidden
algosdk.error.AlgodHTTPError: Missing Authentication Token

I am starting up my node and connecting to the Network now. But, I will provide another update with more detail as soon as I get my code running. Hopefully then I can give some feedback on next steps. Happy to collaborate - we got this!

[iskysun96]

What client are you guys using? Could you share your code on setting up the client?

[Bhaney44]

@iskysun96 client is defined in main.py:

# Client
client = algod.AlgodClient(algod_token, algod_address)

[iskysun96]

What did you use for algod_token and algod_address? Are you starting up sandbox and connecting to the sandbox node or are you using third party services like purestake of algoexplorer?

[Bhaney44]

@iskysun96 The algo_token and algod_address are defined in the config.py file.

algod_address = "http://localhost:4001"

I am running a node. I am not completely sure how I defined the algo_token variable.

[iskysun96]

When you say you are running a node, do you mean you are running sandbox or you built your own node?

Try This. This is for the sandbox node.

algod_address = "http://localhost:4001"
algod_token = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
algod_client = algod.AlgodClient(algod_token, algod_address)

[Bhaney44]

Thanks. I built a node. I am not running in sandbox. Yes - the syntax you are providing is what I am using. Right now I am still handling another Issue, which is a requisite for running Layla Coin.

[ejbaran]

Sorry for slow reply on this and thanks for pointing this out! Looking into it now. That said, this is an old tutorial that was made with the V1 SDK so I suspect the issues are related to it not being migrated over yet. I'll be migrating it to the V2 SDKs and will update here.

[Bhaney44]

Thanks @ejbaran ! You're the best!