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Multipath TCP for Linux (2022)

mptcp.dev

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Re: Multipath TCP for Linux (2022)

#2

Post by vlovich123 »

Why does this require explicit opt in by applications if there’s transparent fallback? Wouldn’t it make most sense for the kernel to do it transparently for every TCP connection so that it can make more global decisions about path aggregation / link preference?

Re: Multipath TCP for Linux (2022)

#3

Post by chmod775 »

vlovich123 wrote: post #2

Why does this require explicit opt in by applications if there’s transparent fallback? Wouldn’t it make most sense for the kernel to do it transparently for every TCP connection so that it can make more global decisions about path aggregation / link preference?

Using this implies that there are multiple IPs per endpoint associated with a single TCP connection. That is going to need explicit support/awarness by the application in many cases.

Re: Multipath TCP for Linux (2022)

#6

Post by ohnoesjmr »

I've heard about MPTCP back in 2013.

It made so much sense back then, when mobile apps were not that robust to networks changing, I assumed it's going to get adopted in no time due to how much of a ux improvement it would have been back in the day.

It's incredibly depressing that this gained barely any traction in the last 10 years, and kernel options are appearing just recently, after everyone has wrapped they http calls in multiple retry handlers, and mobile operating systems have abstracted network connectivity to the point where it feels more like you are using zeromq rather than tcp.

Re: Multipath TCP for Linux (2022)

#8

Post by zoobab »

ohnoesjmr wrote: post #6

I've heard about MPTCP back in 2013. It made so much sense back then, when mobile apps were not that robust to networks changing, I assumed it's going to get adopted in no time due to how much of a ux improvement it would have been back in the day. It's incredibly depressing that this gained barely any traction in the last 10 years, and kernel options are appearing just recently, after everyone has wrapped they http…

ZeroMQ yeah!

Re: Multipath TCP for Linux (2022)

#9

Post by atarvaneitor »

zoobab wrote: post #7

Too bad there is no link to projects using mptcp, such as Openwrt derivatives. PS: I mentored a student for 2 years at GSOC to patch Openwrt with mptcp: https://blog.freifunk.net/2017/05/29/gsoc-2017-add-mptcp-sup...

one example on openwrt http://www.openmptcprouter.com/
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