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Better explanation of frame filtering logic

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This commit is contained in:
Pavel Kirienko
2014-02-15 21:08:45 +04:00
parent 06d757b78e
commit 20778f1acb
1 changed files with 5 additions and 1 deletions
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libuavcan/include/uavcan/internal/transport/transfer_listener.hpp
+5 -1
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@@ -130,7 +130,11 @@ class TransferListener : public TransferListenerBase, Noncopyable
TransferReceiver* recv = receivers_.access(key);
if (recv == NULL)
{
if (frame.frame_index != 0) // We don't want to add registrations mid-transfer, that's pointless
/* Adding new registrations mid-transfer (i.e. not upon first frame reception) is not only
* pointless, but plain wrong: non-first frames do not carry address information, so we
* have no chance to detect whether a transfer is addressed to our node or not.
*/
if (frame.frame_index != 0)
return;
TransferReceiver new_recv;