Clients using DAP4?

[gauteh]

Hi,

is there a list of clients using DAP4? I am struggling to get e.g. ncdump to use dap4 when setting up hyrax through docker, or on thredds for that matter. Is there any performance benchmarks between dap2 and dap4?

I am working a bit more on my rust-server (https://github.com/gauteh/dars) and was wondering if I should go for DAP4-only.

By the way; I tried out your approach with a threaded HDF5 reader and it performs really well: https://github.com/gauteh/hidefix (I hope to make C/C++/Python bindings). Implementing different readers (e.g. S3, whatever, should be straight-forward as long as it can Read and Seek / read slices).

Regards, Gaute

[jgallagher59701]

On May 6, 2020, at 4:43 AM, Gaute Hope ***@***.***> wrote: Hi, is there a list of clients using DAP4?

No. There is little client support for DAP4, something I’m trying to change. I’m looking at a way to extend PyDAP to have full support for DAP4. I will check with the netCDF developers.

I am struggling to get e.g. ncdump to use dap4 when setting up hyrax through docker, or on thredds for that matter. Is there any performance benchmarks between dap2 and dap4? I am working a bit more on my rust-server (https://github.com/gauteh/dars <https://github.com/gauteh/dars>) and was wondering if I should go for DAP4-only. By the way; I tried out your approach with a threaded HDF5 reader and it performs really well: https://github.com/gauteh/hidefix <https://github.com/gauteh/hidefix> (I hope to make C/C++/Python bindings). Implementing different readers (e.g. S3, whatever, should be straight-forward as long as it can Read and Seek / read slices).

Nice! James

…

Regards, Gaute — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#116>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AB7Q4KQALCQY2537BKVIJZDRQE5OZANCNFSM4M2KS4FA>.

-- James Gallagher jgallagher@opendap.org

[jgallagher59701]

On May 6, 2020, at 3:23 PM, James Gallagher ***@***.***> wrote: > On May 6, 2020, at 4:43 AM, Gaute Hope ***@***.*** ***@***.***>> wrote: > > > Hi, > > is there a list of clients using DAP4? > No. There is little client support for DAP4, something I’m trying to change. I’m looking at a way to extend PyDAP to have full support for DAP4. I will check with the netCDF developers.

Update: DAP4 is supported by both netcdf-c and netcdf-java. For both, you can specify that protocl by appending using the protocol dap4://… So any client made using those libraries uses DAP4. James

…

> I am struggling to get e.g. ncdump to use dap4 when setting up hyrax through docker, or on thredds for that matter. Is there any performance benchmarks between dap2 and dap4? > > I am working a bit more on my rust-server (https://github.com/gauteh/dars <https://github.com/gauteh/dars>) and was wondering if I should go for DAP4-only. > > By the way; I tried out your approach with a threaded HDF5 reader and it performs really well: https://github.com/gauteh/hidefix <https://github.com/gauteh/hidefix> (I hope to make C/C++/Python bindings). Implementing different readers (e.g. S3, whatever, should be straight-forward as long as it can Read and Seek / read slices). > > Nice! James > Regards, Gaute > > — > You are receiving this because you are subscribed to this thread. > Reply to this email directly, view it on GitHub <#116>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AB7Q4KQALCQY2537BKVIJZDRQE5OZANCNFSM4M2KS4FA>. > -- James Gallagher ***@***.*** ***@***.***>

-- James Gallagher jgallagher@opendap.org

[gauteh]

James Gallagher writes on May 7, 2020 5:31:

> On May 6, 2020, at 3:23 PM, James Gallagher ***@***.***> > wrote: >> On May 6, 2020, at 4:43 AM, Gaute Hope ***@***.*** >> ***@***.***>> wrote: >> Hi, >> >> is there a list of clients using DAP4? >> > > No. There is little client support for DAP4, something I’m trying to > change. I’m looking at a way to extend PyDAP to have full support for > DAP4. > > I will check with the netCDF developers. Update: DAP4 is supported by both netcdf-c and netcdf-java. For both, you can specify that protocl by appending using the protocol dap4://… So any client made using those libraries uses DAP4.

Hi, thanks for you answer. I could not get those clients to work properly (I asked netcdf-c project about that, maybe I am invoking it wrong). I am getting the impression that it is not safe to only support DAP4 yet (in a server). Regards, Gaute