forked from TrueCloudLab/neoneo-go
edcee68f91
Initially I wanted to emulate it, but probably there is no much gain in doing so. It can be done if need be.
156 lines
5 KiB
Markdown
156 lines
5 KiB
Markdown
# RPC
|
|
|
|
## Client
|
|
|
|
Client is provided as a Go package, so please refer to the
|
|
[relevant godocs page](https://godoc.org/github.com/nspcc-dev/neo-go/pkg/rpc).
|
|
|
|
## Server
|
|
|
|
The server is written to support as much of the [JSON-RPC 2.0 Spec](http://www.jsonrpc.org/specification) as possible. The server is run as part of the node currently.
|
|
|
|
### Example call
|
|
|
|
An example would be viewing the version of the node:
|
|
|
|
```bash
|
|
$ curl -X POST -d '{"jsonrpc": "2.0", "method": "getversion", "params": [], "id": 1}' http://localhost:20332
|
|
```
|
|
|
|
which would yield the response:
|
|
|
|
```json
|
|
{
|
|
"jsonrpc" : "2.0",
|
|
"id" : 1,
|
|
"result" : {
|
|
"port" : 20333,
|
|
"useragent" : "/NEO-GO:0.36.0-dev/",
|
|
"nonce" : 9318417
|
|
}
|
|
}
|
|
```
|
|
### Supported methods
|
|
|
|
| Method |
|
|
| ------- |
|
|
| `getapplicationlog` |
|
|
| `getbestblockhash` |
|
|
| `getblock` |
|
|
| `getblockcount` |
|
|
| `getblockhash` |
|
|
| `getblockheader` |
|
|
| `getblocksysfee` |
|
|
| `getconnectioncount` |
|
|
| `getcontractstate` |
|
|
| `getnep17balances` |
|
|
| `getnep17transfers` |
|
|
| `getpeers` |
|
|
| `getrawmempool` |
|
|
| `getrawtransaction` |
|
|
| `getstorage` |
|
|
| `gettransactionheight` |
|
|
| `getunclaimedgas` |
|
|
| `getvalidators` |
|
|
| `getversion` |
|
|
| `invoke` |
|
|
| `invokefunction` |
|
|
| `invokescript` |
|
|
| `sendrawtransaction` |
|
|
| `submitblock` |
|
|
| `validateaddress` |
|
|
|
|
#### Implementation notices
|
|
|
|
##### `invokefunction` and `invoke`
|
|
|
|
neo-go's implementation of `invokefunction` and `invoke` does not return `tx`
|
|
field in the answer because that requires signing the transaction with some
|
|
key in the server which doesn't fit the model of our node-client interactions.
|
|
Lacking this signature the transaction is almost useless, so there is no point
|
|
in returning it.
|
|
|
|
It's possible to use `invokefunction` not only with contract scripthash, but also
|
|
with contract name (for native contracts) or contract ID (for all contracts). This
|
|
feature is not supported by the C# node.
|
|
|
|
##### `getunclaimedgas`
|
|
|
|
It's possible to call this method for any address with neo-go, unlike with C#
|
|
node where it only works for addresses from opened wallet.
|
|
|
|
##### `getcontractstate`
|
|
|
|
It's possible to get non-native contract state by its ID, unlike with C# node where
|
|
it only works for native contracts.
|
|
|
|
##### `getstorage`
|
|
|
|
This method doesn't work for the Ledger contract, you can get data via regular
|
|
`getblock` and `getrawtransaction` calls.
|
|
|
|
### Unsupported methods
|
|
|
|
Methods listed down below are not going to be supported for various reasons
|
|
and we're not accepting issues related to them.
|
|
|
|
| Method | Reason |
|
|
| ------- | ------------|
|
|
| `claimgas` | Doesn't fit neo-go wallet model, use CLI to do that |
|
|
| `dumpprivkey` | Shouldn't exist for security reasons, see `claimgas` comment also |
|
|
| `getbalance` | To be implemented |
|
|
| `getmetricblocktimestamp` | Not really useful, use other means for node monitoring |
|
|
| `getnewaddress` | See `claimgas` comment |
|
|
| `getwalletheight` | Not applicable to neo-go, see `claimgas` comment |
|
|
| `importprivkey` | Not applicable to neo-go, see `claimgas` comment |
|
|
| `listaddress` | Not applicable to neo-go, see `claimgas` comment |
|
|
| `listplugins` | neo-go doesn't have any plugins, so it makes no sense |
|
|
| `sendfrom` | Not applicable to neo-go, see `claimgas` comment |
|
|
| `sendmany` | Not applicable to neo-go, see `claimgas` comment |
|
|
| `sendtoaddress` | Not applicable to neo-go, see `claimgas` comment |
|
|
|
|
### Extensions
|
|
|
|
Some additional extensions are implemented as a part of this RPC server.
|
|
|
|
#### Limits and paging for getnep17transfers
|
|
|
|
`getnep17transfers` RPC call never returns more than 1000 results for one
|
|
request (within specified time frame). You can pass your own limit via an
|
|
additional parameter and then use paging to request the next batch of
|
|
transfers.
|
|
|
|
Example requesting 10 events for address NbTiM6h8r99kpRtb428XcsUk1TzKed2gTc
|
|
within 0-1600094189 timestamps:
|
|
|
|
```json
|
|
{ "jsonrpc": "2.0", "id": 5, "method": "getnep17transfers", "params":
|
|
["NbTiM6h8r99kpRtb428XcsUk1TzKed2gTc", 0, 1600094189, 10] }
|
|
```
|
|
|
|
Get the next 10 transfers for the same account within the same time frame:
|
|
|
|
```json
|
|
{ "jsonrpc": "2.0", "id": 5, "method": "getnep17transfers", "params":
|
|
["NbTiM6h8r99kpRtb428XcsUk1TzKed2gTc", 0, 1600094189, 10, 1] }
|
|
```
|
|
|
|
#### Websocket server
|
|
|
|
This server accepts websocket connections on `ws://$BASE_URL/ws` address. You
|
|
can use it to perform regular RPC calls over websockets (it's supposed to be a
|
|
little faster than going regular HTTP route) and you can also use it for
|
|
additional functionality provided only via websockets (like notifications).
|
|
|
|
#### Notification subsystem
|
|
|
|
Notification subsystem consists of two additional RPC methods (`subscribe` and
|
|
`unsubscribe` working only over websocket connection) that allow to subscribe
|
|
to various blockchain events (with simple event filtering) and receive them on
|
|
the client as JSON-RPC notifications. More details on that are written in the
|
|
[notifications specification](notifications.md).
|
|
|
|
## Reference
|
|
|
|
* [JSON-RPC 2.0 Specification](http://www.jsonrpc.org/specification)
|
|
* [NEO JSON-RPC 2.0 docs](https://docs.neo.org/docs/en-us/reference/rpc/latest-version/api.html)
|