AnkrSDKWrapper

`AnkrSDKWrapper`

AnkrSDKWrapper provides support for all platform-dependent features and implements IAnkrSDK.

Properties:

NetworkHelper — provides an INetworkHelper instance.
Eth — provides an IEthHandler instance.

Public methods

GetContract — creates a contract instance for a smart contract interaction.
CreateSubscriber — creates subscribers for the real-time contract event subscriptions.
Disconnect — disconnects from the wallet.

`GetContract`

Declaration

IContract GetContract(string contractAddress, string contractABI)

Parameters:

contractAddress (string) — a contract address.
contractABI (string) — a contract's application binary interface (ABI).

Returns

IContract — returns an instance of the Contract class.

Provides an instance of a contract with a platform-dependant provider.

Code example

using AnkrSDK.Core.Infrastructure;
using AnkrSDK.Provider;
using UnityEngine;
 
public class ContractExample : MonoBehaviour
{
	private IContract _contract;
 
	private void Start()
	{
		var ankrSDK = AnkrSDKFactory.GetAnkrSDKInstance("http://...");
		_contract = ankrSDK.GetContract("0x...","...");
	}
}

`CreateSubscriber`

Declaration

IContractEventSubscriber CreateSubscriber(string wsUrl)

Parameters:

wsUrl (string) — an RPC endpoint for the WebSockets connection.

Returns

IContractEventSubscriber — returns a subscriber class instance.

Provides an instance of subscriber to make contract event subscriptions. See more on Events and subscriptions.

Code example

using AnkrSDK.Core.Infrastructure;
using AnkrSDK.Data;
using AnkrSDK.DTO;
using AnkrSDK.Examples.ERC20Example;
using AnkrSDK.Provider;
using AnkrSDK.UseCases;
using Cysharp.Threading.Tasks;
using UnityEngine;
 
namespace AnkrSDK.EventListenerExample
{
	public class EventListenerExample : UseCase
	{
		private IContractEventSubscriber _eventSubscriber;
		private IContractEventSubscription _subscription;
		private IEthHandler _eth;
 
		private void Start()
		{			
			var ankrSDK = AnkrSDKFactory.GetAnkrSDKInstance(ERC20ContractInformation.HttpProviderURL);
			_eth = ankrSDK.Eth;
 
			_eventSubscriber = ankrSDK.CreateSubscriber(ERC20ContractInformation.WsProviderURL);
			_eventSubscriber.ListenForEvents().Forget();
			_eventSubscriber.OnOpenHandler += UniTask.Action(SubscribeWithRequest);
		}
 
		// If you know topic position then you can use EventFilterData
		public async UniTaskVoid SubscribeWithTopics()
		{
			var filters = new EventFilterData
			{
				FilterTopic2 = new object[] { await _eth.GetDefaultAccount() }
			};
 
			_subscription = await _eventSubscriber.Subscribe(
				filters,
				ERC20ContractInformation.ContractAddress, 
				(TransferEventDTO t) => ReceiveEvent(t)
			);
		}
		
		// If you know only topic name then you can use EventFilterRequest
		public async UniTaskVoid SubscribeWithRequest()
		{
			var filtersRequest = new EventFilterRequest<TransferEventDTO>();
			filtersRequest.AddTopic("To", await _eth.GetDefaultAccount());
 
			_subscription = await _eventSubscriber.Subscribe(
				filtersRequest,
				ERC20ContractInformation.ContractAddress, 
				ReceiveEvent
			);
		}
 
		private void ReceiveEvent(TransferEventDTO contractEvent)
		{
			Debug.Log($"{contractEvent.From} - {contractEvent.To} - {contractEvent.Value}");
		}
 
		public void Unsubscribe()
		{
			_eventSubscriber.Unsubscribe(_subscription.SubscriptionId).Forget();
		}
 
		private void OnDestroy()
		{
			_eventSubscriber.StopListen();
		}
	}
}

`Disconnect`

Declaration

UniTask Disconnect(bool waitForNewSession)

Parameters:

waitForNewSession (boolean) — if true (by default), a connection will be reestablished upon disconnection. If false, connection will be closed immediately.

Returns

Removes a wallet connection.

Code example

using AnkrSDK.Core.Infrastructure;
using AnkrSDK.Provider;
using UnityEngine;
 
public class DisconnectExample : MonoBehaviour
{
	private IAnkrSDK _sdk;
 
	private void Start()
	{
		_sdk = AnkrSDKFactory.GetAnkrSDKInstance("http://...");
	}
 
	private void OnDisable()
	{
		_sdk.Disconnect(false);
	}
}

AnkrSDKFactory EthHandler