Throws exceptions on RPC errors

CHANGELOG.md

@@ -7,6 +7,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [1.2.0] - 2020-07-26
+### Changed
+- IconServiceHelper::sendRequest throws exception on invalid curl request
+- TransactionBuilder::send() handles the exception and returns Object or null
+- Removed unnecessary TODOs
+
 ## [1.1.0] - 2020-06-11
 ### Added
 - README, added requirements and installation instructions

src/IconService/IconService.php

@@ -89,7 +89,6 @@ public function getBlockByHash($hash)
      *
      * @return object
      */
-    //TODO migrate
     public function call($score, $params)
     {
         return $this->transactionBuilder
@@ -126,7 +125,6 @@ public function getBalance($address)
      *
      * @return object
      */
-    //TODO migrate
     public function getScoreApi($address)
     {
         return $this->transactionBuilder
@@ -160,7 +158,6 @@ public function getTotalSupply()
      * @return object
      */
 
-    //TODO Keep migrating from here on
     public function getTransactionResult($txHash)
     {
         return $this->transactionBuilder

src/Transaction/TransactionBuilder.php

@@ -226,10 +226,14 @@ public function get(): Transaction
         return $this->transaction;
     }
 
-    //TODO add endpoint url in here
-    public function send(): \stdClass
+    public function send(): ?\stdClass
     {
-        return $this->iconServiceHelper->sendRequest($this->transaction->getTransactionObject());
+        try {
+            return $this->iconServiceHelper->sendRequest($this->transaction->getTransactionObject());
+        } catch (\Exception $e) {
+            echo $e->getMessage();
+            return null;
+        }
     }
 
     public function getTransaction(): Transaction

src/Utils/IconServiceHelper.php

@@ -15,20 +15,31 @@ public function __construct(IconService $iconService)
 
     /**
      * @param $data
-     * @return object
+     * @return object|null
+     * @throws \Exception
      */
     public function sendRequest($data)
     {
         //Send request to RPC
         $data_string = json_encode($data);
         $ch = curl_init($this->iconService->getIconServiceUrl());
+        curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_0);
         curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");
         curl_setopt($ch, CURLOPT_POSTFIELDS, $data_string);
         curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
         curl_setopt($ch, CURLOPT_HTTPHEADER, array(
             'Content-Type: application/json'
         ));
 
-        return json_decode(curl_exec($ch));
+        $result = curl_exec($ch);
+
+        if (curl_errno($ch) !== 0 || strpos(strtolower($result), 'jsonrpc') === false) {
+            curl_close($ch);
+            throw new \Exception('Curl error' . curl_error($ch) !== '' ? curl_error($ch) : $result );
+        }
+
+        curl_close($ch);
+        return json_decode($result);
+
     }
 }