fix readRaw disconnection issue

src/xrpIO/ripple-binding.ts

@@ -141,15 +141,16 @@ export const writeRaw = async (api: RippleAPI, data: Memo, from:
 
 
 export const readRaw = async (api: RippleAPI, hash: string): Promise<Memo> => {
-  let _api
-  if(!api.isConnected()){
-    _api = await cloneApi(api)
-  }else{
-    _api = api
+  while(!api.isConnected()){
+    try{
+      await api.connect()
+    }catch(e){
+      //retry
+    }
   }
   let tx
   try{
-    tx = await _api.getTransaction(hash, {
+    tx = await api.getTransaction(hash, {
       minLedgerVersion: 25235454
     })
   }catch(e){
@@ -157,8 +158,6 @@ export const readRaw = async (api: RippleAPI, hash: string): Promise<Memo> => {
       console.log("READRAW ERR", e)
       throw e
     }
-  }finally{
-    await _api.disconnect()
   }
 
   if (!tx || !tx.specification || !tx.specification['memos'] || !tx.specification['memos'][0]) {