Find terminating characters in request.

Author: JASchilz

http_server.py

@@ -112,7 +112,7 @@ def server(log_buffer=sys.stderr):
                     data = conn.recv(1024)
                     request += data.decode('utf8')
 
-                    if b'\r\n\r\n' in request:
+                    if '\r\n\r\n' in request:
                         break