proxy_pass: do not chunk HTTP/1.0 with keep-alive

Instead, we must drop non-terminated responses since
HTTP/1.0 clients do not understand chunked encoding.

This is necessary for "ab -k" which still uses HTTP/1.0.

1 files changed, 6 insertions, 2 deletions

diff --git a/lib/yahns/proxy_http_response.rb b/lib/yahns/proxy_http_response.rb
index c5e7be5..bd274fe 100644
--- a/lib/yahns/proxy_http_response.rb
+++ b/lib/yahns/proxy_http_response.rb
@@ -105,8 +105,12 @@ module Yahns::HttpResponse # :nodoc:
 
     # chunk the response ourselves if the client supports it,
     # but the backend does not terminate properly
-    if alive && ! term && (env['HTTP_VERSION'] == 'HTTP/1.1'.freeze)
-      res << "Transfer-Encoding: chunked\r\n".freeze
+    if alive && ! term
+      if env['HTTP_VERSION'] == 'HTTP/1.1'.freeze
+        res << "Transfer-Encoding: chunked\r\n".freeze
+      else # we can't persist HTTP/1.0 and HTTP/0.9 w/o Content-Length
+        alive = false
+      end
     end
     res << (alive ? "Connection: keep-alive\r\n\r\n".freeze
                   : "Connection: close\r\n\r\n".freeze)