Re: [Libguestfs] [PATCH nbdkit] New filter: request-request

On 10/14/21 23:28, Richard W.M. Jones wrote: > On Thu, Oct 14, 2021 at 04:22:27PM -0500, Eric Blake wrote: >> I know this is just an RFC, but the idea looks like it may have merit. >> Would we want to merge this functionality into the 'retry' filter (a >> single filter, with a knob on whether to retry single requests >> vs. full connection), or would that be too heavyweight for one filter? > > I did look at that, but the current retry filter is complicated enough > and this would make it quite a lot more complicated (unless you can > see some easy way to do it). > > Also the two filters do have somewhat different behaviour and perhaps > use cases. > > I really need a way to test this with the curl plugin to check that it > really does what I think it does. In particular I'm not convinced > curl will actually go through the whole redirect phase in this case, > which would mean it doesn't actually solve Alexander's problem. I wonder if one of the commonly used proxies (squid perhaps?) can be configured to inject errors / fail requests intentionally with some user-specified frequency.