RPC API

Getting Started

You can access the SASEUL node with HTTP or HTTPS and use RPC in the GET or POST method.

In case of GET method, provide request parameters in query string.

• URL: {host}/{RPC_API_NAME}?{request parameters}

In case of POST method, provide request parameters in form-data with key-value format.

• URL: {host}/{RPC_API_NAME}
• Body: {request parameters}

Basic Operation

Ping

• URL: {host}/ping

Check that the SASEUL node is active.

Return Value

{
    "code": 200,
    "data": []
}

Info

• URL: {host}/info

Get the SASEUL node’s process status and the latest main and resource block information.

Return Value

{
  "code": 200,
  "data": {
    "chain_maker_policy": true,
    "resource_miner_policy": true,
    "peer_searcher_policy": true,
    "collector_policy": true,
    "mining": false,
    "last_block": {
      ...
    },
    "last_resource_block": {
      ...
    }
  }
}

Tracker Operation

Peer

• URL: {host}/peer

Get the list of nodes on the network that are associated with the SASEUL node.

Request Parameters

Parameter	Requirements	Type	Maxlength	Description
register	optional	Boolean(int)		Determines whether to send a request to the target node to register itself.
host	optional	String		If the ‘register’ variable is true, enter the host variable to register.
authentication	optional	Boolean(int)		Requests the network information of the target node.
height	optional	Int		If the ‘authentication’ variable is true, add the verification block number to be registered.

Return value

{
    "code": 200,
    "data": {
        "peers": {
            ...
        },
        "known_hosts": [
            ...
        ],
        "node": {
            ...
        }
    },
    "register": true,
    "registerResult": true,
    "authentication": true
}

Round Operation

Round

• URL: {host}/round

Get information of a specific block height.

Request Parameters

Parameter	Requirements	Type	Maxlength	Description
chain_type	optional	String		main
height	optional	int		height of recent block

Return value

{
    "code": 200,
    "data": {
        "block": {
            ...
        },
    "sync_limit": 40362,
    "timestamp": 1656048496844843
    }
}

Broadcast

• URL: {host}/broadcast

Get consensus information of the current round.

Request Parameters

Parameter	Requirements	Type	Maxlength	Description
chain_type	optional	String		main
round_key	optional	String		block_hash(latest)

Return value

{
    "code": 200,
    "data": {
        "transactions": {
            ...
        },
        "chunks": {
            ...
        },
        "hypotheses": {
            ...
        }
    }
}

Smart Contracts and Requests

Request

• Execute the method of a smart contract based on data stored in the current node, and display the information

Request Parameters

Parameter	Requirements	Type	Maxlength	Description
request	mandatory	String		{“type”:”", ...}
public_key	optional	String		””
signature	optional	String		””

Example

curl -X POST main.saseul.net/request --data 'request={"type":"GetBalance","address":"<address>"}'

RawRequest

• Execute the method of a smart contract based on data stored in the current node, and display the information
• Execute a registered reqeust code with raw data.

Request Parameter

Parameter	Requirements	Type	Maxlength	Description
body	mandatory	Object		{“request”:{“type”:”", ...}, "public_key":...}

Example

curl -X POST main.saseul.net/rawrequest --data '{"request":{"type":"GetBalance","address":"<address>"}}'

SendTransaction

• Execute the method of the smart contract to create a transaction and broadcast it.

Request Parameters

Parameter	Requirements	Type	Maxlength	Description
transaction	mandatory	String		{“type”:”", ...}
public_key	optional	String		””
signature	optional	String		””

Example

curl -X POST main.saseul.net/sendtransaction --data \
'transaction={"type":"Send","to":"<address>","amount":"<amount>"}&public_key=<public_key>&signature=<signature>'

SendRawTransaction

• Execute the method of the smart contract to create a transaction and broadcast it.
• Execute a registered contract code with raw data.

Request Parameters

Parameter	Requirements	Type	Maxlength	Description
body	mandatory	String		{“transaction”:{“type”:”", ...}, "public_key":...}

Example

curl -X POST main.saseul.net/sendrawtransaction --data \
'{"transaction":{"type":"Send","to":"<address>","amount":"<amount>"},"public_key":"<public_key>","signature":"<signature>"}'