fix gasLimit for sendTx

apps/remix-ide/src/blockchain/blockchain.tsx

@@ -779,46 +779,42 @@ export class Blockchain extends Plugin {
    */
   sendTransaction(tx: Transaction) {
     return new Promise((resolve, reject) => {
-      return this.transactionContextAPI.getGasLimit((err, value) => {
-        if (err) console.log('error resolving gas limit', err);
-        else {
-          tx.gasLimit = value;
+      this.executionContext.detectNetwork((error, network) => {
+        tx.gasLimit = '0x0' // force using gas estimation
+
+        if (error) return reject(error)
+        if (network.name === 'Main' && network.id === '1') {
+          return reject(new Error('It is not allowed to make this action against mainnet'))
         }
-        this.executionContext.detectNetwork((error, network) => {
-          if (error) return reject(error)
-          if (network.name === 'Main' && network.id === '1') {
-            return reject(new Error('It is not allowed to make this action against mainnet'))
-          }
-  
-          this.txRunner.rawRun(
-            tx,
-            (network, tx, gasEstimation, continueTxExecution, cancelCb) => {
+
+        this.txRunner.rawRun(
+          tx,
+          (network, tx, gasEstimation, continueTxExecution, cancelCb) => {
+            continueTxExecution()
+          },
+          (error, continueTxExecution, cancelCb) => {
+            if (error) {
+              reject(error)
+            } else {
               continueTxExecution()
-            },
-            (error, continueTxExecution, cancelCb) => {
-              if (error) {
-                reject(error)
-              } else {
-                continueTxExecution()
-              }
-            },
-            (okCb, cancelCb) => {
-              okCb()
-            },
-            async (error, result) => {
-              if (error) return reject(error)
-              try {
-                if (this.executionContext.isVM()) {
-                  const execResult = await this.web3().remix.getExecutionResultFromSimulator(result.transactionHash)
-                  resolve(resultToRemixTx(result, execResult))
-                } else resolve(resultToRemixTx(result))
-              } catch (e) {
-                reject(e)
-              }
             }
-          )
-        })
-      })      
+          },
+          (okCb, cancelCb) => {
+            okCb()
+          },
+          async (error, result) => {
+            if (error) return reject(error)
+            try {
+              if (this.executionContext.isVM()) {
+                const execResult = await this.web3().remix.getExecutionResultFromSimulator(result.transactionHash)
+                resolve(resultToRemixTx(result, execResult))
+              } else resolve(resultToRemixTx(result))
+            } catch (e) {
+              reject(e)
+            }
+          }
+        )
+      })   
     })
   }