jsonRPC

<?php

/**
 * Simple JSON-RPC interface.
 */
 namespace org;

class JsonRpc
{
   protected $host, $port, $version;
   protected $id = 0;
   
   function __construct($host, $port, $version="2.0")
   {
      $this->host = $host;
      $this->port = $port;
      $this->version = $version;
   }
   
   function request($method, $params=array())
   {
      $data = array();
      $data['jsonrpc'] = $this->version;
      $data['id'] = $this->id++;
      $data['method'] = $method;
      $data['params'] = $params;
      
      $ch = curl_init();
      
      curl_setopt($ch, CURLOPT_URL, $this->host);
      curl_setopt($ch, CURLOPT_PORT, $this->port);
      curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
      curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: application/json')); 
      curl_setopt($ch, CURLOPT_POST, TRUE);
      curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($data));
      
      $ret = curl_exec($ch);
      
      if($ret !== FALSE)
      {
         $formatted = $this->format_response($ret);
         
         if(isset($formatted->error))
         {
            //throw new RPCException($formatted->error->message, $formatted->error->code);
            return false;
         }
         else
         {
            return $formatted;
         }
      }
      else
      {
         throw new \think\Exception("Server did not respond");
      }
   }
   
   function format_response($response)
   {
      return @json_decode($response);
   }
}

// class RPCException extends Exception
// {
//     public function __construct($message, $code = 0, Exception $previous = null) 
//     {
//         parent::__construct($message, $code, $previous);
//     }
    
//     public function __toString() 
//     {
//         return __CLASS__ . ": ".(($this->code > 0)?"[{$this->code}]:":"")." {$this->message}\n";
//     }
// }