# SDK Components

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The following information is deprecated and may limit its use. Please refer to the WalletConnect 2.0 tab for the latest version of NEOPIN wallet integration: [WalletConnect 2.0](/developers/walletconnect-2.0.md)
{% endhint %}

<table><thead><tr><th width="290">ConnectManager components</th><th>Descriptions</th></tr></thead><tbody><tr><td>ConnectManager</td><td><p>Object for connecting to the NEOPIN Wallet. Currently supported listeners are as follows.</p><ul><li>wcConnect: Called when connecting to Bridge Server.</li><li>wcDisconnect: Called when a Disconnect request (KillSession request) is received and a SocketException error occurs.</li><li>wcSessionApprove: Called when a connection with the wallet is complete.</li><li>wcSessionReject: Called when the connection with the wallet fails.</li><li>wcResultResponse: Called when a response value according to the requested Method is delivered.</li></ul></td></tr><tr><td>getInstance()</td><td><p>Get the current SessionApprove completed Session.</p><ul><li>id: PeerId</li><li>session: Session Data</li><li>client: WebSocket Client connected to Bridge Server</li><li>regDate: Time the connection was completed</li><li>userAddress: Address delivered by Wallet</li><li>network: Network(ChainId)</li><li>remotePeerMeta: Counterpart PeerMeta</li><li>remotePeerId: Counterpart PeerId</li></ul></td></tr></tbody></table>

#### **WCSession Structure (DeepLink)**

<table><thead><tr><th width="141">Type</th><th>Value</th><th>Descriptions</th></tr></thead><tbody><tr><td>scheme</td><td>"nptwc"</td><td>Scheme used for NEOPIN Wallet</td></tr><tr><td>topic</td><td>"38b70a66-9959-4c85-96d5-2db30cedbbb4"</td><td>Random UUID</td></tr><tr><td>version</td><td>"1.0"</td><td>Version</td></tr><tr><td>bridge</td><td>"https://wc-bridge.neopin.io/"</td><td>Bridge Server</td></tr><tr><td>key</td><td>"6f133083c20d226e5c0846f494df16fed16158ede182910c34bbe7ce98d8b994"</td><td>Random Public Encryption and Decryption</td></tr></tbody></table>

#### **WCPeerMeta Structure**

<table><thead><tr><th width="140">Type</th><th width="306">Value</th><th width="299">Descriptions</th></tr></thead><tbody><tr><td>appId</td><td>"${Issuance required}"</td><td>Used as DApp storage delimiter</td></tr><tr><td>name</td><td>"Dapp Sample"</td><td>DApp name to display on the screen</td></tr><tr><td>url</td><td>"https://www.sample.com/"</td><td>DApp introduction URL to display on the screen</td></tr><tr><td>description</td><td>"Sample"</td><td>Brief introduction</td></tr><tr><td>icons</td><td>listOf("https://neopin.io/favicon.png")</td><td>DApp icon URL to display on the screen</td></tr><tr><td>deepLink</td><td>"sample://open"</td><td>(Optional) DeepLink to be called after sendTransaction is finished\</td></tr></tbody></table>

#### **WCEthereumTransaction Structure**

<table><thead><tr><th width="140">Type</th><th width="310">Value</th><th width="299">Descriptions</th></tr></thead><tbody><tr><td>chainId</td><td>"8217"</td><td>NEOPIN Connect supports a variety of networks, so specifying a chainID is required.</td></tr><tr><td>from</td><td>"0x..."</td><td>The address from which the transaction is sent.</td></tr><tr><td>to</td><td>"0x..."</td><td>The address to which the transaction is received.</td></tr><tr><td>nonce</td><td>"0x0001"</td><td>The number of transactions that the transaction sender has sent before this transaction.</td></tr><tr><td>gasPrice</td><td>"0x9184e72a000"</td><td>Price per gas, which is an integer value of gasPrice.</td></tr><tr><td>gas</td><td>"0x76c0"</td><td>Integer value of gas amount set for transaction execution.</td></tr><tr><td>value</td><td>"0x0"</td><td>(Optional) Integer value of the remittance that you want to send through the transaction.</td></tr><tr><td>data</td><td>"0xa9059cbb00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"</td><td>(Optional) Hash of method identifiers and encoded parameters.</td></tr></tbody></table>


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