Nathan Potter

I think an important question here might be: _Are there any DAP services that return UNICODE values in either Attribute names or String values (Attributes or variables)?_ I think the...

You might review these tutorials and see if what you're doing to set up the session chimes with how these describe the approach: - [Client Authentication (PyDAP)](https://opendap.github.io/documentation/tutorials/ClientAuthentication.html#_pydap) - [PyDAP with...

> Being lazy, I will ask you if you know if HTTP chunking is being used for these requests? I do not know. But the endpoint: ``` https://oco2.gesdisc.eosdis.nasa.gov/opendap/OCO2_L2_Standard.11.2r/2024/107/oco2_L2StdND_52084a_240416_B11205r_240610060300.h5 ``` Is...

@DennisHeimbigner - For what it's worth II put a copy of the file here: http://test.opendap.org:8080/opendap/GESDISC/oco2_L2StdND_52084a_240416_B11205r_240610060300.h5 You can use that URL to download the file. I don't think the test.opendap.org system...

> The checksum problem represents an issue for the dap4 spec that needs to be resolved. See this discussion [OPENDAP/dap4-specification#6](https://github.com/OPENDAP/dap4-specification/discussions/6) I agree! But I this issue is really about DAP2,...

> Ok, then a work-around for the large URI request is, as noted in comment, is to use #noprefetch. I'm not that fluent in **_`ncdump`_** etc., Is there an invocation...

> That is weird. The cause of the new error (after adding #noprefetch) is an authorization error. > That means I can read the meta-data without authorization, but I cannot...

[I set up my local system like this](https://opendap.github.io/documentation/tutorials/ClientAuthentication.html#dodsrc) and reran: ``` ncdump -v "RetrievalGeometry_retrieval_longitude" "https://oco2.gesdisc.eosdis.nasa.gov/opendap/OCO2_L2_Standard.11.2r/2024/107/oco2_L2StdND_52084a_240416_B11205r_240610060300.h5#noprefetch" ``` And it worked great.

I scanned the Apache `httpd` and `mod_proxy_ajp` documentation and they both define a maximum of 8k bytes for the request header. There's clearly a way to make it smaller, but...

In DAP4 fully qualified names are used, so it makes sense to me that the dap4:// protocol reference should work with ncdump