From 600148e6d21215f15ec1a9b35fdb788032116f80 Mon Sep 17 00:00:00 2001
From: Alex Root Junior <jroot.junior@gmail.com>
Date: Thu, 16 Nov 2017 17:56:27 +0200
Subject: [PATCH] Check response content type.

---
 aiogram/bot/api.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/aiogram/bot/api.py b/aiogram/bot/api.py
index 13ff07e7..7705e52a 100644
--- a/aiogram/bot/api.py
+++ b/aiogram/bot/api.py
@@ -50,6 +50,9 @@ async def _check_result(method_name, response):
     body = await response.text()
     log.debug(f"Response for {method_name}: [{response.status}] {body}")
 
+    if response.content_type != 'application/json':
+        raise exceptions.NetworkError(f"Invalid response with content type {response.content_type}: \"{body}\"")
+
     try:
         result_json = await response.json(loads=json.loads)
     except ValueError: