From 990ac52a1aededac4b185b8a721510e01d0cbca2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?L=2E=20K=C3=A4rkk=C3=A4inen?=
 <tronic@users.noreply.github.com>
Date: Sun, 8 Mar 2020 14:17:38 +0200
Subject: [PATCH] Header values should be strictly ASCII but both UTF-8 and
 Latin-1 exist. Use UTF-8B to cope with all.

---
 sanic/http.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sanic/http.py b/sanic/http.py
index 7e616724..7896086f 100644
--- a/sanic/http.py
+++ b/sanic/http.py
@@ -120,7 +120,8 @@ class Http:
             raise PayloadTooLarge("Request header exceeds the size limit")
         # Parse header content
         try:
-            reqline, *raw_headers = buf[:pos].decode().split("\r\n")
+            raw_headers = buf[:pos].decode(errors="surrogateescape")
+            reqline, *raw_headers = raw_headers.split("\r\n")
             method, self.url, protocol = reqline.split(" ")
             if protocol == "HTTP/1.1":
                 self.keep_alive = True