Initialization

Before using SDK, it is necessary to create an SDK object that includes some configuration items in the following table. Please fill in according to the actual situation:

configuration	Description	Method
RPC address	CESS chain rpc address	sdkgo.ConnectRpcAddrs
Mnemonic	CESS wallet mnemonic phrase, if empty, no transaction can be made.	sdkgo.Mnemonic
Transaction timeout	Timed out waiting for transaction completion, default is 30 seconds	sdkgo.TransactionTimeout
SDK name	It's just a name, default is cess-sdk-go	sdkgo.Name

Create a query-only sdk client

package main

import (
    "context"
    "fmt"

    sdkgo "github.com/CESSProject/cess-go-sdk"
)

var RPC_ADDRS = []string{
    //testnet
    "wss://testnet-rpc.cess.network/ws/",
}

func main() {
    sdk, err := cess.New(
        context.Background(),
        sdkgo.ConnectRpcAddrs(RPC_ADDRS),
    )
    if err != nil {
        panic(err)
    }
    defer sdk.Close()
    fmt.Println(sdk.SystemVersion())
}

Create a fully functional sdk client

package main

import (
    "context"
    "fmt"
    "time"

    sdkgo "github.com/CESSProject/cess-go-sdk"
)

// Substrate well-known mnemonic:
//
//   - https://github.com/substrate-developer-hub/substrate-developer-hub.github.io/issues/613
//   - cXgaee2N8E77JJv9gdsGAckv1Qsf3hqWYf7NL4q6ZuQzuAUtB
var MY_MNEMONIC = "bottom drive obey lake curtain smoke basket hold race lonely fit walk"

var RPC_ADDRS = []string{
    //testnet
    "wss://testnet-rpc.cess.network/ws/",
}

func main() {
    sdk, err := cess.New(
        context.Background(),
        sdkgo.ConnectRpcAddrs(RPC_ADDRS),
        sdkgo.Mnemonic(MY_MNEMONIC),
        sdkgo.TransactionTimeout(time.Second*10),
    )
    if err != nil {
        panic(err)
    }
    defer sdk.Close()
    fmt.Println(sdk.SystemVersion())
}