3 files changed, 20 insertions, 2 deletions
diff --git a/SocketHttpListener.Portable/Net/HttpConnection.cs b/SocketHttpListener.Portable/Net/HttpConnection.cs
index b09d02254..4b54fc013 100644
--- a/SocketHttpListener.Portable/Net/HttpConnection.cs
+++ b/SocketHttpListener.Portable/Net/HttpConnection.cs
@@ -209,7 +209,9 @@ namespace SocketHttpListener.Net
             // TODO: can we get this stream before reading the input?
             if (o_stream == null)
             {
-                if (context.Response.SendChunked || isExpect100Continue || context.Response.ContentLength64 <= 0)
+                context.Response.DetermineIfChunked();
+
+                if (context.Response.SendChunked || isExpect100Continue || context.Request.IsWebSocketRequest)
                 {
                     o_stream = new ResponseStream(stream, context.Response, _memoryStreamFactory, _textEncoding);
                 }
diff --git a/SocketHttpListener.Portable/Net/HttpListenerResponse.cs b/SocketHttpListener.Portable/Net/HttpListenerResponse.cs
index 880473c0a..c1182de34 100644
--- a/SocketHttpListener.Portable/Net/HttpListenerResponse.cs
+++ b/SocketHttpListener.Portable/Net/HttpListenerResponse.cs
@@ -362,6 +362,22 @@ namespace SocketHttpListener.Net
             return false;
         }
 
+        public void DetermineIfChunked()
+        {
+            if (chunked)
+            {
+                return ;
+            }
+
+            Version v = context.Request.ProtocolVersion;
+            if (!cl_set && !chunked && v >= HttpVersion.Version11)
+                chunked = true;
+            if (!chunked && string.Equals(headers["Transfer-Encoding"], "chunked"))
+            {
+                chunked = true;
+            }
+        }
+
         internal void SendHeaders(bool closing, MemoryStream ms)
         {
             Encoding encoding = content_encoding;
diff --git a/SocketHttpListener.Portable/Net/ResponseStream.cs b/SocketHttpListener.Portable/Net/ResponseStream.cs
index 7a6425dea..6067a89ec 100644
--- a/SocketHttpListener.Portable/Net/ResponseStream.cs
+++ b/SocketHttpListener.Portable/Net/ResponseStream.cs
@@ -14,7 +14,7 @@ namespace SocketHttpListener.Net
     // Update: we send a single packet for the first non-chunked Write
     // What happens when we set content-length to X and write X-1 bytes then close?
     // what if we don't set content-length at all?
-    class ResponseStream : Stream
+    public class ResponseStream : Stream
     {
         HttpListenerResponse response;
         bool disposed;