Added authorization header to RpcClient

Signed-off-by: Roman Bylbas <romka.bulbas@gmail.com>

Author: Roman Bylbas

README.md

@@ -31,10 +31,12 @@ extension=secp256k1.so
 
 ## Usage
 ### Creating RpcClient
-Create `RpcClient` by passing node url to constructor
+Create `RpcClient` by passing node url and authorization token (optional) to constructor
 ```php
 $nodeUrl = 'http://127.0.0.1:7777';
-$client = new Casper\Rpc\RpcClient($nodeUrl);
+$bearerToken = '6ae6c8b31f09df244019ffef60c274e4'; // Optional
+
+$client = new Casper\Rpc\RpcClient($nodeUrl, $bearerToken);
 ```
 
 ### RPC call examples

docs/API/RpcClientAPI.md

@@ -4,12 +4,13 @@ Class for interacting with the network via RPC
 ---
 ## Constructor
 ```php
-__constructor(string $nodeUrl)
+__constructor(string $nodeUrl, string $bearerToken = null)
 ```
 ### Parameters
-| Name | Type | Description | Required |
-|---|---|---|---|
-| `$nodeUrl` | `string` | Full node url string | Yes |
+| Name           | Type | Description                | Required |
+|----------------|---|----------------------------|---|
+| `$nodeUrl`     | `string` | Full node url string       | Yes |
+| `$bearerToken` | `string` | Authorization bearer token | Yes |
 
 ---
 ## Put deploy

src/Rpc/RpcClient.php

@@ -67,11 +67,14 @@ class RpcClient
 
     private string $nodeUrl;
 
+    private ?string $bearerToken = null;
+
     private ?string $lastApiVersion = null;
 
-    public function __construct(string $nodeUrl)
+    public function __construct(string $nodeUrl, string $bearerToken = null)
     {
         $this->nodeUrl = $nodeUrl;
+        $this->bearerToken = $bearerToken;
     }
 
     public function getLastApiVersion(): ?string
@@ -461,20 +464,23 @@ private function rpcCallMethod(string $method, array $params = array()): array
     {
         $url = $this->nodeUrl . '/rpc';
         $curl = curl_init($url);
-        $data = array(
-            'id' => self::ID,
-            'jsonrpc' => self::JSON_RPC,
-            'method' => $method,
-            'params' => $params
-        );
+
+        $headers = ['Accept: application/json', 'Content-type: application/json'];
+        if ($this->bearerToken !== null) {
+            $headers[] = 'Authorization: Bearer ' . $this->bearerToken;
+        }
 
         curl_setopt($curl, CURLOPT_URL, $url);
         curl_setopt($curl, CURLOPT_POST, true);
         curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
-        curl_setopt($curl, CURLOPT_POSTFIELDS, json_encode($data));
-        curl_setopt($curl, CURLOPT_HTTPHEADER, array(
-            'Accept: application/json',
-            'Content-type: application/json',
+        curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
+        curl_setopt($curl, CURLOPT_POSTFIELDS, json_encode(
+            array(
+                'id' => self::ID,
+                'jsonrpc' => self::JSON_RPC,
+                'method' => $method,
+                'params' => $params
+            )
         ));
 
         $response = curl_exec($curl);