From 2e94bfafeae70f41d1f2a8e23591831204b4b315 Mon Sep 17 00:00:00 2001
From: Marshall Greenblatt <magreenblatt@gmail.com>
Date: Fri, 21 Aug 2020 17:18:45 -0400
Subject: [PATCH] wrapper: Allow null stream parameter to
 CefStreamResourceHandler

---
 libcef_dll/wrapper/cef_stream_resource_handler.cc | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/libcef_dll/wrapper/cef_stream_resource_handler.cc b/libcef_dll/wrapper/cef_stream_resource_handler.cc
index ad5a34faf..62fbfb127 100644
--- a/libcef_dll/wrapper/cef_stream_resource_handler.cc
+++ b/libcef_dll/wrapper/cef_stream_resource_handler.cc
@@ -18,7 +18,6 @@ CefStreamResourceHandler::CefStreamResourceHandler(
       mime_type_(mime_type),
       stream_(stream) {
   DCHECK(!mime_type_.empty());
-  DCHECK(stream_.get());
 }
 
 CefStreamResourceHandler::CefStreamResourceHandler(
@@ -33,7 +32,6 @@ CefStreamResourceHandler::CefStreamResourceHandler(
       header_map_(header_map),
       stream_(stream) {
   DCHECK(!mime_type_.empty());
-  DCHECK(stream_.get());
 }
 
 bool CefStreamResourceHandler::Open(CefRefPtr<CefRequest> request,
@@ -59,7 +57,7 @@ void CefStreamResourceHandler::GetResponseHeaders(
   if (!header_map_.empty())
     response->SetHeaderMap(header_map_);
 
-  response_length = -1;
+  response_length = stream_ ? -1 : 0;
 }
 
 bool CefStreamResourceHandler::Read(
@@ -69,6 +67,7 @@ bool CefStreamResourceHandler::Read(
     CefRefPtr<CefResourceReadCallback> callback) {
   DCHECK(!CefCurrentlyOn(TID_UI) && !CefCurrentlyOn(TID_IO));
   DCHECK_GT(bytes_to_read, 0);
+  DCHECK(stream_);
 
   // Read until the buffer is full or until Read() returns 0 to indicate no
   // more data.