From f7bb7303e26a27f402993800ce410fce56f191ac Mon Sep 17 00:00:00 2001
From: Gregor <grex@gmx.de>
Date: Mon, 29 May 2017 21:10:51 +0200
Subject: [PATCH] filter invalid requests

sometimes I observe requests which are malformed (seem to be binary
data) so everything that does not have a method and request (url)
defined gets kicked.
---
 httpserver-request.lua | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/httpserver-request.lua b/httpserver-request.lua
index bf51d49..c6414da 100644
--- a/httpserver-request.lua
+++ b/httpserver-request.lua
@@ -112,6 +112,11 @@ return function (request)
    local line = request:sub(1, e - 1)
    local r = {}
    _, i, r.method, r.request = line:find("^([A-Z]+) (.-) HTTP/[1-9]+.[0-9]+$")
+   if not (r.method and r.request) then
+      --print("invalid request: ")
+      --print(request)
+      return nil
+   end
    r.methodIsValid = validateMethod(r.method)
    r.uri = parseUri(r.request)
    r.getRequestData = getRequestData(request)