Bigfixes.

* imap4d/io.c (io_copy_out): Switch to full buffering before sending
data.
* libmailutils/stream/stream.c (_stream_skip_input_bytes): Bugfix.

@@ -159,7 +159,26 @@ sc2string (int rc)
 int
 io_copy_out (mu_stream_t str, size_t size)
 {
-  return mu_stream_copy (iostream, str, size, NULL);
+  int rc;
+  struct mu_buffer_query oldbuf, newbuf;
+  
+  oldbuf.type = MU_TRANSPORT_OUTPUT;
+  if (mu_stream_ioctl (iostream, MU_IOCTL_TRANSPORT_BUFFER,
+		       MU_IOCTL_OP_GET, &oldbuf) == 0)
+    {
+      newbuf.type = MU_TRANSPORT_OUTPUT;
+      newbuf.buftype = mu_buffer_full;
+      newbuf.bufsize = 64*1024;
+      mu_stream_ioctl (iostream, MU_IOCTL_TRANSPORT_BUFFER,
+		       MU_IOCTL_OP_SET, &newbuf);
+    }
+
+  rc = mu_stream_copy (iostream, str, size, NULL);
+
+  mu_stream_ioctl (iostream, MU_IOCTL_TRANSPORT_BUFFER,
+		   MU_IOCTL_OP_SET, &oldbuf);
+
+  return rc;
 }
 
 int

@@ -520,7 +520,7 @@ _stream_skip_input_bytes (mu_stream_t stream, mu_off_t count, mu_off_t *pres)
 	{
 	  for (pos = 0;;)
 	    {
-	      if (stream->pos == stream->level)
+	      if (pos || stream->level == 0)
 		{
 		  if ((rc = _stream_flush_buffer (stream, _MU_STR_FLUSH_ALL)))
 		    return rc;