refactor: solana mainnet rpc url (#193)

Co-authored-by: Gancho Radkov <ganchoradkov@gmail.com>

dapps/react-dapp-v2/src/contexts/JsonRpcContext.tsx

@@ -12,11 +12,11 @@ import {
 import bs58 from "bs58";
 import { verifyMessageSignature } from "solana-wallet";
 import {
-  clusterApiUrl,
   Connection,
   Keypair,
   SystemProgram,
   Transaction as SolanaTransaction,
+  clusterApiUrl,
 } from "@solana/web3.js";
 // @ts-expect-error
 import TronWeb from "tronweb";
@@ -24,6 +24,7 @@ import {
   eip712,
   formatTestTransaction,
   getLocalStorageTestnetFlag,
+  getProviderUrl,
   hashPersonalMessage,
   hashTypedDataMessage,
   verifySignature,
@@ -562,8 +563,9 @@ export function JsonRpcContextProvider({
 
         const senderPublicKey = solanaPublicKeys[address];
 
+        // rpc.walletconnect.com doesn't support solana testnet yet
         const connection = new Connection(
-          clusterApiUrl(isTestnet ? "testnet" : "mainnet-beta")
+          isTestnet ? clusterApiUrl("testnet") : getProviderUrl(chainId)
         );
 
         // Using deprecated `getRecentBlockhash` over `getLatestBlockhash` here, since `mainnet-beta`
@@ -1051,7 +1053,6 @@ export function JsonRpcContextProvider({
             },
           });
 
-
           const valid = verifier.verify(
             testMessage.serializeForSigning(),
             result.signature

dapps/react-dapp-v2/src/helpers/utilities.ts

@@ -230,3 +230,7 @@ export const getAllChainNamespaces = () => {
   });
   return namespaces;
 };
+
+export const getProviderUrl = (chainId: string) => {
+  return `https://rpc.walletconnect.com/v1/?chainId=${chainId}&projectId=${process.env.NEXT_PUBLIC_PROJECT_ID}`;
+};