From 76e322f2e7c726a489e7c5ee2c5e5aa350ee951e Mon Sep 17 00:00:00 2001
From: Ivan Grokhotkov <ivan@espressif.com>
Date: Tue, 26 Apr 2016 15:58:12 +0800
Subject: [PATCH] Fix handling of chunked transfer encoding (#1975)

---
 libraries/ESP8266HTTPClient/src/ESP8266HTTPClient.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/libraries/ESP8266HTTPClient/src/ESP8266HTTPClient.cpp b/libraries/ESP8266HTTPClient/src/ESP8266HTTPClient.cpp
index 3ce4c16de..28829742a 100644
--- a/libraries/ESP8266HTTPClient/src/ESP8266HTTPClient.cpp
+++ b/libraries/ESP8266HTTPClient/src/ESP8266HTTPClient.cpp
@@ -624,6 +624,13 @@ int HTTPClient::writeToStream(Stream * stream)
                 break;
             }
 
+            // read trailing \r\n at the end of the chunk
+            char buf[2];
+            auto trailing_seq_len = _tcp->readBytes((uint8_t*)buf, 2);
+            if (trailing_seq_len != 2 || buf[0] != '\r' || buf[1] != '\n') {
+                return returnError(HTTPC_ERROR_READ_TIMEOUT);
+            }
+
             delay(0);
         }
     } else {