[mpls-linux-general] hello socket and link failure

[Scott L. <nat...@ya...>]

James,

Is there any way to know in the socket layer (TCP or
UDP)
that whether the physical link has failed?

I think sendto() does not tell you whether it really
sent the packet or hold it in the kernel memory.
If this is the case, the only way we stop sending
hellos (invoking sendto()) is to let
the hello timer expires (5sec * 3). Is this correct?

Thanks.

Scott

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