CURLOPT_UPLOAD_BUFFERSIZE: set upload buffer size

This is step 3 of #2888.

Fixes #2888
Closes #2896

1 files changed, 2 insertions, 1 deletions

diff --git a/lib/smb.c b/lib/smb.c
index e4b18fcf5..e1209e099 100644
--- a/lib/smb.c
+++ b/lib/smb.c
@@ -610,7 +610,8 @@ static CURLcode smb_send_and_recv(struct connectdata *conn, void **msg)
 
   /* Check if there is data in the transfer buffer */
   if(!smbc->send_size && smbc->upload_size) {
-    size_t nread = smbc->upload_size > UPLOAD_BUFSIZE ? UPLOAD_BUFSIZE :
+    size_t nread = smbc->upload_size > conn->data->set.upload_buffer_size ?
+      conn->data->set.upload_buffer_size :
       smbc->upload_size;
     conn->data->req.upload_fromhere = conn->data->state.ulbuf;
     result = Curl_fillreadbuffer(conn, nread, &nread);