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Questions tagged [stellar-core]

stellar-core is the backbone of the Stellar network. It maintains a local copy of the ledger, communicating and staying in sync with other instances of stellar-core on the network.

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3
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2answers
214 views

Streaming API not working?

I'm trying to enable streaming via the REST API but it doesn't seem to be working. curl -H "Accept: text/event-stream" "https://horizon-testnet.stellar.org/payments" This curl statement only returns ...
4
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1answer
74 views

List All Un-authrorized Truslines

I want to activate AUTHORIZATION REQUIRED and AUTHORIZATION REVOCABLE flags on my asset issuing account. How can I get list of all unauthorized trustlines after I activate those two flags? I have my ...
4
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1answer
148 views

Is it possible to fully sync Stellar node without history archive access?

The answer to this question might be trivial, since the Stellar foundation history archives might be always available, but I am just trying to understand how the full syncing works. Could I complete ...
2
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1answer
96 views

Constant retry to publish queued checkpoints

my goal is to host a full archive node and I started a Stellar full sync process three days ago and it is still applying checkpoints. I am getting a command line output, that Stellar is constantly ...
3
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1answer
213 views

Do I need to run Stellar-core and horizon to conduct crowdsale?

Do I need to run Stellar-core and horizon-server to conduct crowdsale ? if yes, Why stellar public horizon is not enough for this case (crowdfunding) ?
2
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1answer
52 views

Horizon import failed (Integer type error?)

I configured a custom docker-compose with Postgres, Stellar Core and Horizon as seperate services. Core and Horizon are running and are responsive via HTTP. Stellar-Core is running on Livenet and is ...
4
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1answer
730 views

Convert XDR to text

I want to convert the XDR fromat of the transaction to text using JS or java SDK in stellar.Or if there are any methods outside stellar also fine.
1
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1answer
310 views

HTTP end point error while try to run in Testnet port

I am relatively new to this stellar-core testing and this is the first post of me on stack exchange, if there is any wrong format or mistake, please tell me. I am here because I have met some problems ...
2
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1answer
124 views

How do I retrieve the source account, memo, and amount using python?

How can I retrieve: transaction amount memo source Account from envelope_xdr using the python sdk?
5
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2answers
476 views

What can cause horizon to have incomplete data?

On a private network, I have 5 core nodes and 5 horizon instances, all of the horizon services were not configured with "history-retention-count", so according to this, this variable to should default ...
4
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1answer
218 views

For 'txBadSeq', when is tx_fee charged?

Test Plan: The testing transactions were all "Pay 0.0001XLM", and there is far enough XLM to send. 5000 channel accounts were set up to try to prevent bad seq, but unfortunately it still happens as ...
3
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1answer
91 views

When do validators know to push the data from the latest ledger to archive nodes?

As Validators agree on the latest transaction sets to apply to the ledger when do they know to update the data being stored in the archive nodes? Is it based on the owner of an archive node listening ...
3
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2answers
204 views

Should Every Node Contain The Same Quorum Set Configuration?

Suppose I want to set up four nodes: A, B, C, D. I want A to trust B, and C to trust D, so the set is denoted by {{A, b}, {C, D}}. I want to set up a situation where either one of these sets can vote ...
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2answers
64 views

Private Testnet 404 issue

I am working on stellar private testnet setup, i have setup 3 stellar-core nodes and horizon, Account creation is working fine but data not showing for ledger, payment, transactions etc. All 3 nodes ...
1
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1answer
128 views

Stellar failure safety with UNSAFE_QUORUM false

Stellar failure safety is defined as n = 3f+1 <=> f = (n-1)/3 n is number of node and f is failure safety. I have setup 3 nodes with my quorum and THRESHOLD_PERCENT=67 but it is not ...
4
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1answer
755 views

Stellar Horizon not synchronizing

Background: Using satoshipay/stellar-horizon:0.11.1 for Horizon Stellar Core seems to be running. Based on logs, we get the latest sequence number and ledger: 2018-04-18T10:31:32.695 GDYMW [Ledger ...
2
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1answer
107 views

How does the Stellar Network prevent an actor with small quorum intersection from halting the network

I am thinking through some of the edge cases of adversaries attempting to compromise the Stellar Network. Let's say an adversary creates four consensus bearing Stellar-core nodes and runs all four of ...
3
votes
1answer
89 views

How to use MANUAL_CLOSE in core config?

The example config states that "Ledger will only close when stellar-core gets the manualclose command". On a new private testing network (ledger#=1), after setting MANUAL_CLOSE=true, I did stellar-...
1
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1answer
182 views

Unable to save data using Horizon on private testnet

I have a Horizon server 0.12.3 and Stellar-Core 9.2.0rc6 running locally. When I send a create account operation using the root account as the source, the new account creates properly. However, when ...
2
votes
1answer
199 views

Good methods for Stress Test to prevent tx_bad_seq?

During a manual stress test with js-stellar-sdk, some transactions may be responded slower (e.g. 10 sec). At high TPS, asynch programming possibly causes server.loadAccount() to get the same tx_seq, ...
11
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1answer
102 views

Info on metrics

Is there any documentation as to what each of the metrics outputted by stellar-core -c metrics means? In particular, I'm interested in determining the number of transactions reviewed by a particular ...
5
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2answers
254 views

Core full catchup time to completion

So our c5.xlarge instance in AWS is processing about 1k checkpoints per day on average. With somewhere around 275068 checkpoints, it would take around 275 days to complete the full sync. Now the rate ...
3
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2answers
237 views

What does it mean with “surge pricing in effect” at Stellar-Core?

As I tested my private network by flooding transaction (around 60TPS) via Horizon using JS-sdk, SCP errored. The only abnormalty that I observed was: [Herder WARNING] surge pricing in effect! 142 ...
5
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1answer
84 views

Should an address be restricted from sending unlimited XLM to itself?

Hello Stellar Community, While testing our wallets yesterday we noticed that an address is able to 'send' itself more XLM than the current total supply limit, ex: 105 Billion XLM. Although the net ...
3
votes
1answer
202 views

What does v blocking node set mean?

I have just started with stellar. I am not able to understand v blocking node set and how do they block progress of a particular node. "An FBA protocol can guarantee liveness to a node 𝑣 only if 𝐐(...
1
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0answers
52 views

stellar-core process is killed with stellar-core: bucket/FutureBucket.cpp:114: void

I am now setting up stellar-core in my amazon cloud services. I have tried to run with "./stellar-core &" however, it is showing the below messages on the phase of "Catching up: applying ...
2
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2answers
616 views

stellar-code stuck with Joining SCP

I have a private network running on my local mac laptop. The network has two nodes. Both the nodes were syncing correctly on Friday, March 16, 2018. I shutdown the nodes by ctrl c. Now when I start ...
1
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1answer
143 views

Running into an invalid quorum set error when running stellar-core

I installed stellar-core and all the tests passed. I used docs/stellar-core_example.cfg and tried to run stellar like so stellar-core -D stellar-example.cfg but I'm getting an error 2018-03-16T17:...
1
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1answer
41 views

how to move stellar lumens locally in the same node? like bitcoin-cli move

I am now making integrated API in my company exchange. Now, looking for "move" function in horizon. Is there any command like the below? bitcoin-cli move "timotei" "akiko" 0.01 6
2
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1answer
445 views

Must I Become an Anchor

I am working for a FinTech startup (Altalix). We provide blockchain-based currency transactions. Our beta app' has been tested on Ethereum, but I'm looking at alternatives, too. Altalix is UK FCA ...
2
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1answer
357 views

Stellar smart contract

Where does the stellar smart contracts stored. Its storing in blokchain (similar like ethereum) or its runs separately and storing only the signed transactions?. As i know stellar stores only the ...
2
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2answers
604 views

Multiple stellar-nodes not syncing

I am running a private network on a MAC laptop with 2 nodes Node 1 HTTP_PORT=11626 PEER_PORT=11625 PUBLIC_HTTP_PORT=false RUN_STANDALONE=false NETWORK_PASSPHRASE="My Network ; March 2018" NODE_SEED=...
1
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1answer
148 views

Maximum Total Supply

What is the maximum Total Supply can be created for token in Stellar? I tried to make 100,000,000,000,000 but can't.
1
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2answers
78 views

How Horizon makes use of stelar-core?

By definition Horizon acts as the interface between stellar-core and applications, and apparently it needs access ... HTTP API that is published by stellar-core. Is there a place where this API is ...
2
votes
1answer
79 views

What is the storage size and growth rate for the Live network?

I would like to sync with the live net, but so far couldn't search for any discussion on the costs and growth rate (archive & postgres). Thanks in advance.
4
votes
1answer
82 views

Are the stellar history (XDR) files available in other regions or on other cloud providers

Most of the documentation or configuration info I have seen reference the history.stellar.org bucket on AWS S3 as the official source of history data. This bucket appears to be in the eu-west-1 (...
1
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1answer
82 views

Do Stellar and Ripple collaborate?

Do Stellar & Ripple organizations communicate/collaborate? Or are they totally separate companies that do not work together?
1
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2answers
396 views

How can I decode Ed25519 addresses to the regular 56 letters format?

I've been trying to use the stellar-archivist command 'dumpxdr' to unpack transactions files that are stored in the stellar core history However the in the results asset codes and addresses appear in ...
1
vote
1answer
208 views

How can I unpack Stellar's XDR history files?

Inside the Stellar core history archive there are these folders: bucket history ledger results scp transactions So inside of the transaction folder: └── transactions └── 00 └── 72 ├...
1
vote
1answer
121 views

How could I create an AutoSequence in a private testnet with the golang SDK?

With the DefaultTestNetClient implementing the SequenceProvider interface, when we use a private testnet, how would we need to implement this since without it (I guess) transactions cannot be ...
4
votes
1answer
255 views

How can I find out the seed key for my genesis account on a local testnet?

Since I am running a local testnet of stellar-core, I was wondering if there is a way to determine the seed key for the genesis account ? I currrently have only one account on my local testnet. TIA.
1
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2answers
378 views

Create & fund account via Horizon API

How can I create a new account in testnet with just an HTTP call to the Horizon rest API something like this: serverip:8000/friendbot? The docs say to use an SDK, but I want to integrate from an ...
3
votes
2answers
415 views

How to configure the quorum set when some non-SDF nodes are not validating?

After checking that my stellar-core node was hanging with status Joining SCP, and seeing in the debug messages that the SCP was receiving all the envelopes normally, I realized that the problem was ...
4
votes
1answer
1k views

How to withdraw Stellar lumens into USD?

I was one of the (lucky?) people to have signed up for Stellar and now have about 6000 lumens, but I have no clue how to convert it into USD i.e withdraw . Also wondering is there a fixed rate of ...
1
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1answer
163 views

Upgrade an existing stellar core

How do I upgrade an existing stellar-core to the latest updated code in git? I tried finding out but couldn't get any details. NOTE: I have built stellar_core from source code and not used the ...
3
votes
1answer
134 views

SQL Database and Stellar Ledger State

Browsing through src code, saw below line in https://github.com/stellar/stellar-core/tree/master/src/database: The Database object manages connections to an SQL database, in which the current ...
2
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1answer
69 views

Stellar Ledger / Hash uniqueness

I've seen many transactions with the same hash. However, is it safe to say that ledger/hash pairs are unique and there are no scenarios where two transactions on the same ledger share a hash?
3
votes
1answer
265 views

Peer rejected while connecting to testnet - core v9.1.0

I recently compiled the source code for stellar-core (v9.1.0-31-g1380e88) and I'm trying to run it in the testnet, but it doesn't connect to any of the KNOWN_PEERS, constantly giving me the warning [...
3
votes
1answer
148 views

How is the node ID assigned to a stellar core node?

Running the quorum command on a stellar-core node will presumably show the current node ID. The node ID looks like a stellar public account key. How is this assigned? Is the similarity to a public ...
2
votes
1answer
283 views

Issue establishing SCP with Public Network

I've successfully set up a watcher node on the TestNet and I'm trying to do likewise on the public network now. I've been using an adapted stellar-core.conf from the docs that looks like this: ...