[Nxt] API of Nxt

[Snard]

If we wanted to walk through the blocks, what is the genesis block for Nxt?

[1714099794]

1714099794

[1714099794]

1714099794

[1714099794]

1714099794

[1714099794]

1714099794

[Come-from-Beyond]

If we wanted to walk through the blocks, what is the genesis block for Nxt?

2680262203532249785

[Come-from-Beyond]

List of error codes:

1 - Incorrect request
2 - Blockchain not up to date
3 - Parameter not specified
4 - Incorrect parameter
5 - Unknown object (block, transaction, etc.)
6 - Not enough funds

This is complete list for version <= 0.2.17

[Come-from-Beyond]

I have just noticed that getBlock request returns "previousBlock". No longer required to scan the blockchain from Genesis block, descending approach should work better!

[GCInc.]

What are we doing wrong with the API?

http://111.111.111.111:7876/?request=sendMoney&secretPhrase=masked&recipient=12345678901234567890&amount=12&fee=1&deadline=900

Result is:

{"errorCode":1,"errorDescription":"Incorrect request"}

[Come-from-Beyond]

What are we doing wrong with the API?

http://111.111.111.111:7876/?request=sendMoney&secretPhrase=masked&recipient=12345678901234567890&amount=12&fee=1&deadline=900

Result is:

{"errorCode":1,"errorDescription":"Incorrect request"}

Disabled coz I was rewriting networking part. A new version will be released in an hour. Some minor changes in API.

Edit: sendMoney and broadcastTransaction will be disabled though, we need more testing on this requests. A version that supports them is planned to be released within 24 hours.

[Come-from-Beyond]

Changes in API

URL changed from localhost:7876/?request=XXX to localhost:7874/nxt?requestType=XXX

API can be accessed via HTTPS if port 7875 used.

Added http://localhost:7874/nxt?requestType=getMyInfo request, "host" can be used to set "allowedBotHosts" parameter in web.xml

[Come-from-Beyond]

sendMoney API request enabled in 0.3.11.

[GCInc.]

Very good!

But we have to be careful; sendMoney gives valid-looking txid even if the transaction was spitted out and not sent to the blockchain. Any way to fix that?

Happily the client does not show the spitted tx.

{"transaction":"10170673123314889622"}

The client has a malfunction in that it does not show all the sendMoney transactions until much later. It does show some. Additional hazard is that even the blockchain explorer does not show the properly sent & accepted transactions until later. This has the potential to cause some serious mess.

[Come-from-Beyond]

But we have to be careful; sendMoney gives valid-looking txid even if the transaction was spitted out and not sent to the blockchain. Any way to fix that?

Use 5 minute deadline and resend a transaction if it's not confirmed. It's impossible to make sure that nodes didn't receive a transaction and if they r going to include it into a block.

[nelisky]

API method request: a way to get a list of transactions pending inclusion in blocks (a la bitcoind getmemorypool).

[nelisky]

API method request:

- create unsigned transaction, to be signed elsewhere (similar to sendmoney without passphrase and returning the raw unsigned transaction?)
- sign transaction, accepting a raw unsigned transaction, returning a raw signed transaction
- broadcast transactions, accepting a raw signed transaction

[omo]

How would I have an account unlocked automatically when Nxt starts (or soon after)?

I have Nxt running in a server and wish to unlock the account after reboot because I was told that the account needs to be unlocked to generate POS.

Thanks!

Try to use this dirty hack:

http://localhost:7875/?user=0.7657349163200706&request=unlockAccount&secretPhrase=MySecret

Value of "user" must be any random number. This is the way the client unlocks accounts. Ignore a response.

Is there a way to check if an account is unlocked?
if I use wget to send the unlock request, how long will it stay unlocked?

[Come-from-Beyond]

Is there a way to check if an account is unlocked?

No.

if I use wget to send the unlock request, how long will it stay unlocked?

Until u send "lock" request.

[nelisky]

Is there already a way to retrieve the last block without knowing its id?

[Come-from-Beyond]

Is there already a way to retrieve the last block without knowing its id?

http://localhost:7874/nxt?requestType=getState

Look at "lastBlock" value.

[omo]

Is there a way to check if an account is unlocked?

No.

if I use wget to send the unlock request, how long will it stay unlocked?

Until u send "lock" request.

so, how does the network know if an account is online?
I understand that starting a nxt client and opening my account in a web browser(online) will have a chance to earn the transaction fees.
Am I confused about UNLOCK and ONLINE?
If I unlock my account and quit the browser(without locking my account), do I have the chance to get trasaction fees?
If I stop the nxt client further, do I have the chance to get transaction fees?

[Come-from-Beyond]

so, how does the network know if an account is online?
I understand that starting a nxt client and opening my account in a web browser(online) will have a chance to earn the transaction fees.
Am I confused about UNLOCK and ONLINE?
If I unlock my account and quit the browser(without locking my account), do I have the chance to get trasaction fees?
If I stop the nxt client further, do I have the chance to get transaction fees?

Network doesn't know if an account online. U unlock an account to let the soft know ur private key.
U can close browser without locking and u will be mining until u restart the client software.

[omo]

Is there some changes about the UNLOCK request in 0.3.16 client?
I use a python script to unlock constantly,
when I restart the client, I got an error:
{u'responses': [{u'message': u'java.lang.NullPointerException', u'response': u'showMessage'}]}

I have to clean the whole nxt directory and restart th client to make the unlock script work again
I was using 0.3.14 and no such problem.

I like 0.3.16 that the numberOfAccounts shows the online accounts, right?

[Come-from-Beyond]

Is there some changes about the UNLOCK request in 0.3.16 client?
I use a python script to unlock constantly,
when I restart the client, I got an error:
{u'responses': [{u'message': u'java.lang.NullPointerException', u'response': u'showMessage'}]}

I have to clean the whole nxt directory and restart th client to make the unlock script work again
I was using 0.3.14 and no such problem.

I like 0.3.16 that the numberOfAccounts shows the online accounts, right?

java.lang.NullPointerException is caused by corrupted files.

numberOfAccounts is number of all accounts.