Change to IP proxy instead of TCP proxy about toxiproxy HOT 9 CLOSED

I think things like reordering packets are out of toxiproxy's scope. The end result would be that TCP reorders / resends them and you just get added latency at the client level, we're trying to test apps not TCP.

UDP support would be nice, but I'm not sure how useful it would be. Any critical data that's sent between apps would be sent over TCP, so there's less of a use case from a resiliency standpoint.

What I like about doing things above the TCP layer is we can make protocol aware toxics that do things like force a read/write to fail (i.e. the server is responding but still down).

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Fair point :)

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UDP support would be nice, but I'm not sure how useful it would be. Any critical data that's sent between apps would be sent over TCP, so there's less of a use case from a resiliency standpoint.

FWIW i'm trying to use toxiproxy in between my apps' clustered instances, which use https://github.com/hashicorp/memberlist which uses UDP. So I think UDP would be very useful :)

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Creating a layer 3 proxy would be a real pain cause we'd probably have to mess around with TUN TAP interfaces. Turning Toxiproxy into a layer 3 proxy sounds like a huge rewrite and wouldn't easy.

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FWIW driven by my use case above i've been researching some toxiproxy alternatives, specifically for tools that target the network layer instead of the application layer and https://github.com/gaia-adm/pumba seems to be the most promising one

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A quick glance at pumba makes me that it's not cross platform because it relies on tc. (A linux specific tool.) Thanks for sharing that with us!

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UDP support would be incredibly useful for testing computer-game networking code. For a detailed insight into "why UDP over TCP" for games, https://gafferongames.com/post/udp_vs_tcp/ does an excellent job.

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Perhaps we could implement this without impacting the TCP layer? Instead have an IP-layer that works differently, with different toxics?

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It would be totally possible to add UDP support. A lot of the system may assume TCP and therefore be a lot of work to refactor.

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