Thanks for your comments, Patrick. Do you mean have the client always use in the handshake the oldest server version it is compatible with?
Sounds like a reasonable simplification. In that case, I would use a flag to activate this behavior so that the current behavior (the client sends the current version in the handshake) is kept when the flag is not used. On the other hand if in the future we have clients that are partially compatible with an older server version, the System Property with the version could allow these clients to connect to that server version assuming that they will not use any incompatible feature. Alberto ________________________________ From: Patrick Johnson <jpatr...@vmware.com> Sent: Friday, January 22, 2021 8:35 PM To: dev@geode.apache.org <dev@geode.apache.org> Subject: Re: [DISCUSS] RFC - Add option to allow newer Geode clients to connect to older Geode servers It sounds like you intend to test which versions are compatible with each other and maintain a list the client can use to reject the setting of force-version when set to an incompatible version. If that’s the case, why not just have the handshake look at that list and automatically connect with any versions that it is known to be compatible with? Then you wouldn’t even have to set the property. > On Jan 22, 2021, at 11:05 AM, Alberto Gomez <alberto.go...@est.tech> wrote: > > Hi Geode devs, > > I have just published the following RFC in the Geode wiki: "Add option to > allow newer Geode clients to connect to older Geode servers" > > https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fcwiki.apache.org%2Fconfluence%2Fdisplay%2FGEODE%2FAdd%2Boption%2Bto%2Ballow%2Bnewer%2BGeode%2Bclients%2Bto%2Bconnect%2Bto%2Bolder%2BGeode%2Bservers&data=04%7C01%7Cjpatrick%40vmware.com%7C13575e2f7095498aaf0608d8bf08be8f%7Cb39138ca3cee4b4aa4d6cd83d9dd62f0%7C0%7C0%7C637469391602573044%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=fgNljW8GTiY3FfVSsnAIe943XHpnMRjLZKSDzmf5Fpk%3D&reserved=0 > > Could you please provide feedback by Tuesday, February 2nd, 2021? > > Thanks, > > Alberto G. >
