From b4bca0bc9af128016efa42adaee0ea106ab54def Mon Sep 17 00:00:00 2001
From: shao1555 <shao@1555.info>
Date: Mon, 18 Dec 2017 15:33:48 +0900
Subject: [PATCH] add batch support for http client

---
 lib/ethereum/http_client.rb | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/lib/ethereum/http_client.rb b/lib/ethereum/http_client.rb
index b8a214d..b2244eb 100644
--- a/lib/ethereum/http_client.rb
+++ b/lib/ethereum/http_client.rb
@@ -28,7 +28,12 @@ def send_single(payload)
     end
 
     def send_batch(batch)
-      raise NotImplementedError
+      result = send_single(batch.to_json)
+      result = JSON.parse(result)
+
+      # Make sure the order is the same as it was when batching calls
+      # See 6 Batch here http://www.jsonrpc.org/specification
+      return result.sort_by! { |c| c['id'] }  
     end
   end