transaction

package
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 Go to latest Published: Jul 22, 2018 License: MIT Imports: 16 Imported by: 0

README

Json Transaction schema for neo Types:

InvocationTransaction TransactionType = 0xd1

// Not quite sure on how to form the claim transaction ClaimTransaction TransactionType = 0x02 { version:"2.0", // jsonrpc command type: "ClaimTransaction", SpecificData: "nil", Attributes : "nil", Claims : [ {

    }
],
Input : [],
Output :[],
Scripts :[]

}

ContractTransaction TransactionType = 0x80 { // This is used to send Neo and Gas to others version: "2.0", type: "ContractTransaction", "SpecificData" : "nil", "Attributes" : "nil", inputs: [ { prevHash: "Hash of prev transaction", prevIndex: "previous transaction's index" path: "derivation path for the address, I want to spend from... 0/2" }, { prevHash: "Hash of prev transaction2", prevIndex: "previous transaction's index" path: "derivation path for the address, I want to spend from... 0/2" },

],
outputs: [
    {
        AssetId : "AssetId of the asset you want to send",
        Value: "How much of the asset you want to send",
        ScriptHash: "Address of the person you want to send to"
    },
    {
        AssetId : "AssetId of the asset you want to send",
        Value: "How much of the asset you want to send",
        ScriptHash: "Address of the person you want to send to"
    }
    
],
scripts: [
     "signatures used to validate the above inputs and outputs"
]

}

This first response is when I put in arguments for invokescript.

&{ 2.0 map[ script:00c1046e616d656711c4d1f4fba619f2628870d36e3a9773e874705b state:FAULT, BREAK gas_consumed:0.011 stack:[map[type:Array value:[]] map[type:ByteArray value:6e616d65]] ] 0 }

<--Invokation Transaction> This is without arguments for invoke script. &{ 2.0 map[script:00046e616d656711c4d1f4fba619f2628870d36e3a9773e874705b state:FAULT, BREAK gas_consumed:0.01 stack:[map[type:ByteArray value:] map[type:ByteArray value:6e616d65]] ] 0 }

// With arguments, the stack is stack:[map[type:Array value:[]] map[type:ByteArray value:6e616d65]] // Without arguments it is: stack:[map[type:ByteArray value:] map[type:ByteArray value:6e616d65]]

So I set the Value to interface{} for now as a quick fix, as I will not be using the stack for now.

Decision:

  • Does the client keep the state of the UTXOs and all addresses with funds?

If so, how?

-- who keeps the list of all of the addresses in use?

client could keep it in realmdb and subscribe to notifications, so that users know when they get a payment

  • This can be done with post notification and dynamodb streams.

  • client can check for balances, using rpc call? or api endpoint, or let them just use the utxos that they have. Yeah, just let them use their utxos.

  • Push notification, will also notify client, so that the app updates in the background.

  • Client looks at cached UTXOs before requesting them from api. (This will have to be done in the native language; Swift) The Go library should therefore only seek out the UTXOs and gas claims for a single address and value or multiple addresses

endpointurl.com/address/

?amount=10 This will return all utxos for that address that sum upto or more than amount, which is 10. The utxos will be sorted, with smallest first

endpointurl.com/address/

This wll return all utxos for that address

endpointurl.com/claims/

This will return all possible claims for address

endpointurl.com/xpub/ This will be given an xpub and return all utxos for addresses under the xpub

endpointurl.com/xpub/?amount=10 This will return a set of utxos that sum to 10 or over from the xpub.

Neon-Js get scriptHash

+const attachAttributesForEmptyTransaction = config => {

  • if (config.tx.inputs.length === 0 && config.tx.outputs.length === 0) {
  • config.tx.addAttribute(TxAttrUsage.Script, reverseHex(getScriptHashFromAddress(config.address)))
  • // This adds some random bits to the transaction to prevent any hash collision.
  • config.tx.addRemark(Date.now().toString() + generatePrivateKey().substr(0, 8))

Documentation

Overview

General components of a transaction in neo

Index

Constants

View Source 
const (
	AttributeScript = 0x20
	AttributeRemark = 0xf0
)

Variables

This section is empty.

Functions

func AddressToScriptHash 

func AddressToScriptHash(address string) string

func ReverseString 

func ReverseString(s string) string

TODO: move this to a better place, like Utils/StringUtils

Types

type Attributes 

type Attributes struct {
	Usage uint16
	Data  []byte
}

func (*Attributes) Encode 

func (attribute *Attributes) Encode(w io.Writer) error

type BasicTransaction 

type BasicTransaction struct {
	Type       uint8
	Version    uint8
	Attributes []Attributes
	Inputs     []Input
	Outputs    []Output
	Witnesses  []Witness
	SystemFee  float32
	NetworkFee float32

	F func(w io.Writer) error
	// contains filtered or unexported fields
}

func (*BasicTransaction) AddAttributes 

func (c *BasicTransaction) AddAttributes(usage uint16, data []byte)

func (*BasicTransaction) AddInput 

func (c *BasicTransaction) AddInput(prevHash string, prevIndex uint16, Address string, External, Index int)

func (*BasicTransaction) AddOutput 

func (c *BasicTransaction) AddOutput(assetId string, value int64, address string)

func (*BasicTransaction) AddPrivateKey 

func (c *BasicTransaction) AddPrivateKey(seed string, external, index int)

func (*BasicTransaction) AddScriptAttributes 

func (c *BasicTransaction) AddScriptAttributes()

func (*BasicTransaction) GetHash 

func (c *BasicTransaction) GetHash() string

func (*BasicTransaction) OrderInputsByAddressHash 

func (c *BasicTransaction) OrderInputsByAddressHash()

func (*BasicTransaction) SerialiseAttributes 

func (c *BasicTransaction) SerialiseAttributes(w io.Writer) error

func (*BasicTransaction) SerialiseInputs 

func (c *BasicTransaction) SerialiseInputs(w io.Writer) error

func (*BasicTransaction) SerialiseOutputs 

func (c *BasicTransaction) SerialiseOutputs(w io.Writer) error

func (*BasicTransaction) SerialiseScripts 

func (c *BasicTransaction) SerialiseScripts(w io.Writer) error

func (*BasicTransaction) SerialiseTransaction 

func (c *BasicTransaction) SerialiseTransaction(buf *bytes.Buffer, signed bool) error

func (*BasicTransaction) SerialiseType 

func (c *BasicTransaction) SerialiseType(w io.Writer) error

func (*BasicTransaction) SerialiseVersion 

func (c *BasicTransaction) SerialiseVersion(w io.Writer) error

func (*BasicTransaction) SetNetworkFee 

func (c *BasicTransaction) SetNetworkFee(value float32)

func (*BasicTransaction) SetSystemFee 

func (c *BasicTransaction) SetSystemFee(value float32)

func (*BasicTransaction) SignTransaction 

func (c *BasicTransaction) SignTransaction(seed string)

use the seed along with the path/index in each input to sign the transaction

type Input 

type Input struct {
	PrevHash  string
	PrevIndex uint16
	Address   string
	External  int
	Index     int // this is the derivation integer/path for this address

}

func (*Input) Encode 

func (i *Input) Encode(w io.Writer) error

type Output 

type Output struct {
	AssetId string
	Value   int64
	Address string
}

func (*Output) Encode 

func (o *Output) Encode(w io.Writer) error

type Witness 

type Witness struct {
	VerificationScript []byte
	InvocationScript   []byte
}

func (*Witness) Encode 

func (witness *Witness) Encode(w io.Writer) error

Source Files

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