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by AdrenalinMd 4833 days ago
Hold on, isn't it the time to force DNS to be TCP only ?
2 comments
graylights 4833 days ago
No. Currently a significant amount of latency in opening a web page is the DNS resolution (for half a dozen domains). TCP adds a lot of overhead compared to UDP.

But a case can be made that large requests should be TCP only.

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lucb1e 4833 days ago
> TCP adds a lot of overhead compared to UDP.

Not if you simply keep a TCP connection open and use SYN cookies on the servers. Many DNS servers already support TCP (though I'm pretty sure you need a new connection for every request).

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marshray 4833 days ago
That'd likely result in increased traffic and slowdowns even in normal cases.
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