DCABuilder slippage parameter fix

src/blockchain/transaction.js

@@ -1,4 +1,4 @@
-import {nav, uuid} from "@/misc.js";
+import {nav, sleep, uuid} from "@/misc.js";
 import {vaultContract} from "@/blockchain/contract.js";
 import {ensureVault, provider, switchChain, useWalletStore} from "@/blockchain/wallet.js";
 import {toRaw} from "vue";
@@ -128,9 +128,15 @@ export class Transaction {
             this.failed('vault contract was null while sending order transaction')
             return null
         }
-        const tx = toRaw(await this.createTx(contract))
-        this.signed(tx)
-        console.log(`sent transaction`, tx)
+        try {
+            const tx = toRaw(await this.createTx(contract))
+            this.signed(tx)
+            console.log(`sent transaction`, tx)
+        }
+        catch (e) {
+            this.failed(e)
+            return null
+        }
         tx.wait().then(this.mined.bind(this)).catch(this.failed.bind(this))
         return this.tx
     }
@@ -159,7 +165,20 @@ export class PlaceOrderTransaction extends Transaction {
 
 
     async createTx(vaultContract) {
-        this.fee = await placementFee(this.vault, this.order)
+        const tries = 3;
+        let i;
+        for (i=0; i<tries; i++ ) {
+            try {
+                this.fee = await placementFee(vaultContract, this.order)
+                break
+            }
+            catch (e) {
+                console.warn('failed to get placement fee', e)
+                await sleep(1000)
+            }
+        }
+        if (i===tries)
+            throw Error('failed to get placement fee')
         console.log('placing order', this.id, this.fee, this.order)
         return await vaultContract.placeDexorder(this.order, {value: this.fee.reduce((a, b) => a + b)})
     }