What happens when we send a large UDP response? Well as we saw earlier the UDP and IP headers both have length fields. The way it works out is that fragmentation actually happens at the IP layer ...
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Sometimes I am wondering how different protocols and infrastructure would look like if we'd start from scratch today.
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We'd put it over HTTPS and increase the complexity and overheads tenfold. Which, uh. Is a thing. Which is happening.
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... And aggravating when it stops working due to these abstractions leaking and losing composability... Eg I hit an issue last year where pmtu discovery didn't work inside a container with bridged networking, causing the gigabit network to download at a few k/sec
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The takeaway from Dave Clark's tutorial at Interop in 1997 (boy am I dating myself) was "Believe it or not, despite all of this, the Internet actually works most of the time." It hasn't gotten any less complicated, but people have certainly made heroic efforts to keep it working.
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@threadreaderapp unroll s’il vous plaît. -
Hi, please find the unroll here: Thread by
@colmmacc: Tuesday Technical Tweet Thread Time! Let's go on the roller coaster of what happens at a low level… https://threadreaderapp.com/thread/1224766402629795840.html …. See you soon.
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I'm hoping that DNS over QUIC will become a thing.
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I remember my old friend adjust-mms.
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This Tweet is unavailable.
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This was the best thread I’ve read on Twitter in a semaphore time-out!
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