Chunked transfer encoding

[thekid]

The transfer() method should resort to using chunked transfer encoding when no content length is passed.

$ git diff
diff --git a/src/main/php/org/oneandone/punktestand/Proxy.class.php b/src/main/php/org/oneandone/punktestand/Proxy.class.php
index 58247da..1b1d80a 100755
--- a/src/main/php/org/oneandone/punktestand/Proxy.class.php
+++ b/src/main/php/org/oneandone/punktestand/Proxy.class.php
@@ -14,6 +14,16 @@ class Proxy implements \web\Handler {
     $attach= $this->api->attachment($path);

     $res->status($attach->status());
-    $res->transfer($attach->stream(), $attach->header('Content-Type'));
+    $res->header('Content-Type', $attach->header('Content-Type'));
+    $res->header('Transfer-Encoding', 'chunked');
+
+    $in= $attach->stream();
+    while ($in->available()) {
+      $chunk= $in->read();
+      $res->write(sprintf("%x\r\n%s\r\n\r\n", strlen($chunk), $chunk));
+    }
+
+    $res->write("0\r\n");
+    $in->close();
   }
 }
\ No newline at end of file

See https://tools.ietf.org/html/rfc2616#section-3.6.1