From f8f69bef31ecae81b0153ae9453929b227ee59d0 Mon Sep 17 00:00:00 2001
From: "M. Yas. Davoodeh" <30480116+Davoodeh@users.noreply.github.com>
Date: Thu, 25 Aug 2022 16:18:41 +0430
Subject: [PATCH] Add missing \r to the response headers

https://www.rfc-editor.org/rfc/rfc7230#section-3

>   All HTTP/1.1 messages consist of a start-line followed by a sequence
>   of octets in a format similar to the Internet Message Format
>   [RFC5322]: zero or more header fields (collectively referred to as
>   the "headers" or the "header section"), an empty line indicating the
>   end of the header section, and an optional message body.
>
> ```
>     HTTP-message   = start-line
>                      *( header-field CRLF )
>                      CRLF
>                      [ message-body ]
> ```
---
 echo.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/echo.py b/echo.py
index ffaad5a..304c2c1 100755
--- a/echo.py
+++ b/echo.py
@@ -47,7 +47,7 @@ def serve(host='0.0.0.0', port=3246, verbosity=1):
                 print(' - '.join([client_address[0], request_time, request['header']['request-line']]))
 
             raw_decoded = request['raw'].decode('utf-8', 'ignore')
-            response = "HTTP/1.1 200 OK\nAccess-Control-Allow-Origin: *\n\n{}".format(raw_decoded)
+            response = "HTTP/1.1 200 OK\r\nAccess-Control-Allow-Origin: *\r\n\r\n{}".format(raw_decoded)
             if verbosity == 2:
                 print("-"*10)
                 print(response)