Just ftr, am updating resolver site, go thru it, it may contain relevant
info for you (is still wip)

https://github.com/apache/maven-resolver/pull/281

On Sat, Apr 22, 2023, 21:37 Jeremy Landis <[email protected]> wrote:

> Thank you, Tamas!  That did the trick.  Thank you for detailed explanation
> of what is going on.
>
> I simply added to maven.config
>
> -Daether.connector.smartChecksums=false
>
> And now it is doing exactly what I got when maven 3.8.x and before.  I do
> have the checksums algorithms set as indicated and personally would love to
> remove the older ones but as noted everything would need there and in our
> platforms we still have some md5 even so I need all unfortunately.  One day
> I'm sure that will change.  Thanks for noting you will extend
> documentation, that will significantly help others I'm sure.  At the
> moment, we are not actually doing anything with the checksums and I
> discovered it while researching separate issue few weeks back as we have a
> lot of network problems in general due to large scale / limited resources.
> Ultimately, we plan to start verifications and it was somewhat perplexing.
> For us, we are planning on jacking up the default retries from 3 to 10 on
> failed pulls due to varied network issues (as to my original issue) and
> seeing checksum issue concerned me if that would even work given same
> module and recent add of that logic to the resolver.  Now I feel more
> confident.
>
> Looking forward to maven 3.9.2 otherwise when it lands.  For my day job,
> we already have this scaled out on 2k repos at 3.9.1 and I've been doing
> same with maven wrapper across all OSS projects I work and will continue
> doing so.  Loving the overall progress of maven!
>
> Thanks,
>
> Jeremy
>
>
>
> -----Original Message-----
> From: Tamás Cservenák <[email protected]>
> Sent: Saturday, April 22, 2023 5:03 AM
> To: Maven Developers List <[email protected]>
> Subject: Re: [HEADS UP] Maven 3.9.2 is around the corner
>
> Verified, and as I assumed: it works Jeremy, but there are other things
> that may end up in unexpected results.
>
> I tested locally, and "it works for me":
> $ mvn -s settings.xml dependency:resolve
> -Daether.checksums.algorithms=SHA-512,SHA-256,SHA-1,MD5
> -Daether.connector.smartChecksums=false
>
> $ tree local/org/test/test/1.0
> local/org/test/test/1.0
> ├── _remote.repositories
> ├── test-1.0.pom
> ├── test-1.0.pom.sha512
> ├── test-1.0.txt
> └── test-1.0.txt.sha512
>
> So what I did is to explicitly DISABLE "smart checksums". And here is what
> happens in details when smart checksums not disabled:
> - ANY modern MRM (Artifactory, Nexus, etc, but same is true for Central)
> sends sha1/md5 in response headers
> - "smart checksums" hits BEFORE (when artifact response arrives) checksum
> is requested from remote
> - checksums are satisfied even BEFORE SHA-512 or SHA-256 would be asked
> for (as header contains SHA-1 that is enabled, and it matched)
>
> So what happens is that smart checksums from header matches, and resolver
> is satisfied with SHA-1 (or MD5) as those two are enabled => all ok
>
> Alternative would be to not enable SHA-1/MD5 that are delivered by
> majority of remote repositories and MRMs and consumed by "smart checksum":
> $ mvn -s settings.xml dependency:resolve
> -Daether.checksums.algorithms=SHA-512,SHA-256
>
> But this requires that EVERYTHING, every artifact have SHA-512, SHA-256
> available.
>
> Will extend this page
> https://maven.apache.org/resolver/about-checksums.html
> as things are getting more involved if you factor in "trusted" and
> "provided" checksums...
>
> HTH
> Tamas
>
>
>
> On Sat, Apr 22, 2023 at 8:26 AM Tamás Cservenák <[email protected]>
> wrote:
>
> > My assumption: have you tried SHA-256 with
> > aether.connector.smartChecksums  disabled?
> >
> > T
> >
> > On Sat, Apr 22, 2023, 07:18 Tamás Cservenák <[email protected]> wrote:
> >
> >> Howdy,
> >>
> >> This sounds strange, will try to reproduce it. One remark though:
> >> checksum names as mentioned in doco are case sensitive...
> >>
> >> T
> >>
> >> On Fri, Apr 21, 2023, 23:47 Jeremy Landis <[email protected]>
> >> wrote:
> >>
> >>> Since maven 3.9.0, sha 256/512 checksums no longer are being pulled
> >>> if available and requested either through command line are or
> maven.config.
> >>> Has this been reported?  Dropping back to maven 3.8.8 it works again.
> >>>
> >>> Sent from my Verizon, Samsung Galaxy smartphone Get Outlook for
> >>> Android<https://na01.safelinks.protection.outlook.com/?url=https%3A%25
> >>> 2F%2Faka.ms%2FAAb9ysg&data=05%7C01%7C%7C5b9826aee85e46efd5f508db4310
> >>> 788f%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C638177510250427080
> >>> %7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI
> >>> 6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=%2BMLO%2FcAzRU9OpnLw%2
> >>> BB7PqBbK8wNyDMkTY3zTStHJTgo%3D&reserved=0>
> >>> ________________________________
> >>> From: Tamás Cservenák <[email protected]>
> >>> Sent: Friday, April 21, 2023 9:33:38 AM
> >>> To: Maven Developers List <[email protected]>
> >>> Subject: Re: [HEADS UP] Maven 3.9.2 is around the corner
> >>>
> >>> Howdy,
> >>>
> >>> There is one (IMHO) blocker bug reported for resolver 1.9.8
> >>>
> >>> https://iss/
> >>> ues.apache.org%2Fjira%2Fbrowse%2FMRESOLVER-352&data=05%7C01%7C%7C5b9
> >>> 826aee85e46efd5f508db4310788f%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1
> >>> %7C0%7C638177510250427080%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMD
> >>> AiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sda
> >>> ta=8XDjUgs8LWeis9JOhgsc3MQMb3KCdI5VrGG8TZSeZKM%3D&reserved=0
> >>> <https://is/
> >>> sues.apache.org%2Fjira%2Fbrowse%2FMRESOLVER-352&data=05%7C01%7C%7C5b
> >>> 9826aee85e46efd5f508db4310788f%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C
> >>> 1%7C0%7C638177510250427080%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwM
> >>> DAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sd
> >>> ata=8XDjUgs8LWeis9JOhgsc3MQMb3KCdI5VrGG8TZSeZKM%3D&reserved=0>
> >>>
> >>> That means Maven 3.9.2 needs to wait for bugfix release of resolver
> >>> (if nothing else crops up).
> >>>
> >>> Thanks
> >>> T
> >>>
> >>> On Mon, Apr 17, 2023 at 4:04 PM Tamás Cservenák
> >>> <[email protected]>
> >>> wrote:
> >>>
> >>> > Howdy,
> >>> >
> >>> > The 3.9.2 is nearly done:
> >>> >
> >>> >
> >>> https://iss/
> >>> ues.apache.org%2Fjira%2Fissues%2F%3Fjql%3Dproject%2520%253D%2520MNG%
> >>> 2520AND%2520fixVersion%2520%253D%25203.9.2&data=05%7C01%7C%7C5b9826a
> >>> ee85e46efd5f508db4310788f%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0
> >>> %7C638177510250427080%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLC
> >>> JQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=h
> >>> siKQ%2Bk2DNOEojwIzOllZm%2BdQ4v0J4WAg9S%2FC84UKpM%3D&reserved=0
> >>> <
> >>> https://iss/
> >>> ues.apache.org%2Fjira%2Fissues%2F%3Fjql%3Dproject%2520%253D%2520MNG%
> >>> 2520AND%2520fixVersion%2520%253D%25203.9.2&data=05%7C01%7C%7C5b9826a
> >>> ee85e46efd5f508db4310788f%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0
> >>> %7C638177510250427080%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLC
> >>> JQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=h
> >>> siKQ%2Bk2DNOEojwIzOllZm%2BdQ4v0J4WAg9S%2FC84UKpM%3D&reserved=0
> >>> >
> >>> >
> >>> > There are some candidates as well:
> >>> >
> >>> >
> >>> https://iss/
> >>> ues.apache.org%2Fjira%2Fissues%2F%3Fjql%3Dproject%2520%253D%2520MNG%
> >>> 2520AND%2520fixVersion%2520%253D%25203.9.x-candidate&data=05%7C01%7C
> >>> %7C5b9826aee85e46efd5f508db4310788f%7C84df9e7fe9f640afb435aaaaaaaaaa
> >>> aa%7C1%7C0%7C638177510250427080%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4w
> >>> LjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%
> >>> 7C&sdata=dIW7uNxluTqHRLlPhTGDMSRKGJ2ILFoBLEoOTd0EqUM%3D&reserved=0
> >>> <
> >>> https://iss/
> >>> ues.apache.org%2Fjira%2Fissues%2F%3Fjql%3Dproject%2520%253D%2520MNG%
> >>> 2520AND%2520fixVersion%2520%253D%25203.9.x-candidate&data=05%7C01%7C
> >>> %7C5b9826aee85e46efd5f508db4310788f%7C84df9e7fe9f640afb435aaaaaaaaaa
> >>> aa%7C1%7C0%7C638177510250427080%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4w
> >>> LjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%
> >>> 7C&sdata=dIW7uNxluTqHRLlPhTGDMSRKGJ2ILFoBLEoOTd0EqUM%3D&reserved=0
> >>> >
> >>> >
> >>> > As usual, please raise your voice if there are some other issues
> >>> > not in these two sets above, or if you have a candidate that
> >>> > should be moved
> >>> to
> >>> > 3.9.2.
> >>> >
> >>> > Thanks
> >>> > T
> >>> >
> >>>
> >>
>

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