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by lxgr 606 days ago
> [...] my loss is much less [...]

Unless it's actually zero, any loss on the "outer" TCP stream will cause a retransmission, visible to the inner one as a sharp jump in latency of all data following the loss. Most TCP stacks don't handle that very well either.

1 comments

Sure, even when outer loss is pretty close to zero, it's conceptually not great.

On the other hand, I get 400mbps over TCP-over-TCP connections, and can't connect in any other reasonable way. 400mbps > 0.

Even tunneling in UDP is not great due to MTU effects.