Fix some protocol differences between netcdf-c and the Hyrax server.

re: Partly addresses issue https://github.com/Unidata/netcdf-c/issues/1712. 1. Turn on Hyrax Hack to accept Hyrax style attribute containers. 2. Support Url type as alias for String. 3. Accept the special attribute, "__DAP4_Checksum_CRC32", to control per-variable checksums. 4. Make _DAP4_xxx attributes be reserved and only accessible by name (ala _SuperBlock attribute). 5. Fix handling of checksums. There is a hack in the code that uses an extra flag in the chunk header to indicate that all variables have checksums. This violates the spec and will be removed once it is possible to regenerate the test cases. Note that checksumming with the Hyrax test server has not been tested. This, along with some other probable inconsistencies, needs fixing when OPeNDAP and Unidata can agree on the proper specification. Testing will be included.
2025-03-31 17:50:26 +08:00 · 2020-05-30 17:36:25 -06:00 · 2020-05-30 17:36:25 -06:00 · 65414eeaa4
commit 65414eeaa4
parent 43417c9f7f
146 changed files with 462 additions and 354 deletions
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@ -835,9 +835,11 @@ int main() {int x = CURLOPT_TCP_KEEPALIVE;}" HAVE_CURLOPT_KEEPALIVE)
 # Check to see if we have libcurl 7.66 or later
 CHECK_C_SOURCE_COMPILES("
 #include <curl/curl.h>
-#if (LIBCURL_VERSION_MAJOR*1000 + LIBCURL_VERSION_MINOR >=  7066)
-      choke me
-#endif" HAVE_LIBCURL_766)
+int main() {
+#if (LIBCURL_VERSION_MAJOR*1000 + LIBCURL_VERSION_MINOR < 7066)
+      choke me;
+#endif
+}" HAVE_LIBCURL_766)

 # Option to Build DAP2+DAP4 Clients
 OPTION(ENABLE_DAP "Enable DAP2 and DAP4 Client." ON)
@ -859,7 +861,7 @@ ENDIF()
 # Option to support byte-range reading of remote datasets
 OPTION(ENABLE_BYTERANGE "Enable byte-range access to remote datasets.." OFF)

-IF(NOT CURL_LIBRARY)
+IF(NOT CURL_LIBRARIES AND NOT CURL_LIBRARY)
  IF(ENABLE_BYTERANGE)
    MESSAGE(FATAL_ERROR "Byte-range support specified, CURL libraries are not found.")
  ENDIF()
--- a/RELEASE_NOTES.md
+++ b/RELEASE_NOTES.md
@ -7,6 +7,7 @@ This file contains a high-level description of this package's evolution. Release

 ## 4.8.0 - TBD

+* [Bug Fix] Fix some protocol bugs/differences between the netcdf-c library and the OPeNDAP Hyrax server. Also cleanup checksum handling [https://github.com/Unidata/netcdf-c/issues/1712].
 * [Bug Fix] Add necessary __declspec declarations to allow compilation
 of netcdf library without causing errors or (_declspec related)
 warnings [https://github.com/Unidata/netcdf-c/issues/1725].
--- a/dap4_test/Makefile.am
+++ b/dap4_test/Makefile.am
@ -14,7 +14,7 @@ include $(top_srcdir)/lib_flags.am
 #TESTS_ENVIRONMENT = export SETX=1;

 LDADD = ${top_builddir}/liblib/libnetcdf.la
-AM_CPPFLAGS += -I$(top_srcdir)/libdap4
+AM_CPPFLAGS += -I$(top_srcdir)/libdap4 -I${topdir}/include

 # Set up the tests; do the .sh first, then .c
 check_PROGRAMS =
@ -28,6 +28,7 @@ check_PROGRAMS += test_parse test_meta test_data
 test_parse_SOURCES = test_parse.c test_common.h
 test_meta_SOURCES = test_meta.c test_common.h
 test_data_SOURCES = test_data.c test_common.h
+
 TESTS += test_parse.sh

 if BUILD_UTILITIES
@ -43,10 +44,13 @@ test_raw.log: test_parse.log
 test_meta.log: test_raw.log
 test_data.log: test_meta.log

+noinst_PROGRAMS = dump
+dump_SOURCES = dump.c
+
 if ENABLE_DAP_REMOTE_TESTS
 # Note: This program name was changed to findtestserver4
 # to avoid cmake complaint about duplicate targets.
-noinst_PROGRAMS = findtestserver4 pingurl4
+noinst_PROGRAMS += findtestserver4 pingurl4
 findtestserver4_SOURCES = findtestserver4.c
 pingurl4_SOURCES = pingurl4.c
 endif
--- a/dap4_test/baseline/test_anon_dim.2.syn.d4d
+++ b/dap4_test/baseline/test_anon_dim.2.syn.d4d
@ -6,7 +6,6 @@ variables:

 // global attributes:
 		string :_dap4.ce = "/vu32[0:3]" ;
-		:_DAP4_Little_Endian = 1UB ;
 data:

 vu32 = -1169720286, -920699049, -2088732436, 1060190036 ;
--- a/dap4_test/baseline/test_anon_dim.2.syn.d4m
+++ b/dap4_test/baseline/test_anon_dim.2.syn.d4m
@ -6,5 +6,4 @@ variables:

 // global attributes:
 		string :_dap4.ce = "/vu32[0:3]" ;
-		:_DAP4_Little_Endian = 1UB ;
 }
--- a/dap4_test/baseline/test_anon_dim.syn.d4d
+++ b/dap4_test/baseline/test_anon_dim.syn.d4d
@ -4,8 +4,6 @@ dimensions:
 variables:
 	int vu32(_Anonymous6) ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 data:

 vu32 = -1169720286, -920699049, -2088732436, 1060190036, -1123468835, 
--- a/dap4_test/baseline/test_anon_dim.syn.d4m
+++ b/dap4_test/baseline/test_anon_dim.syn.d4m
@ -4,6 +4,4 @@ dimensions:
 variables:
 	int vu32(_Anonymous6) ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 }
--- a/dap4_test/baseline/test_atomic_array.5.nc.d4d
+++ b/dap4_test/baseline/test_atomic_array.5.nc.d4d
@ -12,7 +12,6 @@ variables:

 // global attributes:
 		string :_dap4.ce = "/vu8[1][0:2:2];/vd[1];/vs[1][0];/vo[0][1]" ;
-		:_DAP4_Little_Endian = 1UB ;
 data:

 vu8 =
--- a/dap4_test/baseline/test_atomic_array.5.nc.d4m
+++ b/dap4_test/baseline/test_atomic_array.5.nc.d4m
@ -12,5 +12,4 @@ variables:

 // global attributes:
 		string :_dap4.ce = "/vu8[1][0:2:2];/vd[1];/vs[1][0];/vo[0][1]" ;
-		:_DAP4_Little_Endian = 1UB ;
 }
--- a/dap4_test/baseline/test_atomic_array.8.nc.d4d
+++ b/dap4_test/baseline/test_atomic_array.8.nc.d4d
@ -6,7 +6,6 @@ variables:

 // global attributes:
 		string :_dap4.ce = "/v16[0:1,3]" ;
-		:_DAP4_Little_Endian = 1UB ;
 data:

 v16 = 1, 2, 4 ;
--- a/dap4_test/baseline/test_atomic_array.8.nc.d4m
+++ b/dap4_test/baseline/test_atomic_array.8.nc.d4m
@ -6,5 +6,4 @@ variables:

 // global attributes:
 		string :_dap4.ce = "/v16[0:1,3]" ;
-		:_DAP4_Little_Endian = 1UB ;
 }
--- a/dap4_test/baseline/test_atomic_array.9.nc.d4d
+++ b/dap4_test/baseline/test_atomic_array.9.nc.d4d
@ -6,7 +6,6 @@ variables:

 // global attributes:
 		string :_dap4.ce = "/v16[3,0:1]" ;
-		:_DAP4_Little_Endian = 1UB ;
 data:

 v16 = 4, 1, 2 ;
--- a/dap4_test/baseline/test_atomic_array.9.nc.d4m
+++ b/dap4_test/baseline/test_atomic_array.9.nc.d4m
@ -6,5 +6,4 @@ variables:

 // global attributes:
 		string :_dap4.ce = "/v16[3,0:1]" ;
-		:_DAP4_Little_Endian = 1UB ;
 }
--- a/dap4_test/baseline/test_atomic_array.nc.d4d
+++ b/dap4_test/baseline/test_atomic_array.nc.d4d
@ -22,8 +22,6 @@ variables:
 	cloud_class_t primary_cloud(d5) ;
 		cloud_class_t primary_cloud:_FillValue = Missing ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 data:

 vu8 =
--- a/dap4_test/baseline/test_atomic_array.nc.d4m
+++ b/dap4_test/baseline/test_atomic_array.nc.d4m
@ -22,6 +22,4 @@ variables:
 	cloud_class_t primary_cloud(d5) ;
 		cloud_class_t primary_cloud:_FillValue = Missing ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 }
--- a/dap4_test/baseline/test_atomic_array.syn.d4d
+++ b/dap4_test/baseline/test_atomic_array.syn.d4d
@ -22,8 +22,6 @@ variables:
 	cloud_class_t primary_cloud(d5) ;
 		cloud_class_t primary_cloud:_FillValue = Missing ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 data:

 vu8 =
--- a/dap4_test/baseline/test_atomic_array.syn.d4m
+++ b/dap4_test/baseline/test_atomic_array.syn.d4m
@ -22,6 +22,4 @@ variables:
 	cloud_class_t primary_cloud(d5) ;
 		cloud_class_t primary_cloud:_FillValue = Missing ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 }
--- a/dap4_test/baseline/test_atomic_types.nc.d4d
+++ b/dap4_test/baseline/test_atomic_types.nc.d4d
@ -24,8 +24,6 @@ variables:
 	cloud_class_t secondary_cloud ;
 		cloud_class_t secondary_cloud:_FillValue = Missing ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 data:

 v8 = -128 ;
--- a/dap4_test/baseline/test_atomic_types.nc.d4m
+++ b/dap4_test/baseline/test_atomic_types.nc.d4m
@ -24,6 +24,4 @@ variables:
 	cloud_class_t secondary_cloud ;
 		cloud_class_t secondary_cloud:_FillValue = Missing ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 }
--- a/dap4_test/baseline/test_atomic_types.syn.d4d
+++ b/dap4_test/baseline/test_atomic_types.syn.d4d
@ -24,8 +24,6 @@ variables:
 	cloud_class_t secondary_cloud ;
 		cloud_class_t secondary_cloud:_FillValue = Missing ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 data:

 v8 = 58 ;
--- a/dap4_test/baseline/test_atomic_types.syn.d4m
+++ b/dap4_test/baseline/test_atomic_types.syn.d4m
@ -24,6 +24,4 @@ variables:
 	cloud_class_t secondary_cloud ;
 		cloud_class_t secondary_cloud:_FillValue = Missing ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 }
--- a/dap4_test/baseline/test_enum.nc.d4d
+++ b/dap4_test/baseline/test_enum.nc.d4d
@ -8,8 +8,6 @@ variables:
 	cloud_class_t primary_cloud ;
 		cloud_class_t primary_cloud:_FillValue = Missing ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 data:

 primary_cloud = Stratus ;
--- a/dap4_test/baseline/test_enum.nc.d4m
+++ b/dap4_test/baseline/test_enum.nc.d4m
@ -8,6 +8,4 @@ variables:
 	cloud_class_t primary_cloud ;
 		cloud_class_t primary_cloud:_FillValue = Missing ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 }
--- a/dap4_test/baseline/test_enum_2.nc.d4d
+++ b/dap4_test/baseline/test_enum_2.nc.d4d
@ -5,8 +5,6 @@ types:
      Altocumulus = 7, Cirrostratus = 8, Cirrocumulus = 9, Cirrus = 10, 
      Missing = 127} ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;

 group: h {
  variables:
--- a/dap4_test/baseline/test_enum_2.nc.d4m
+++ b/dap4_test/baseline/test_enum_2.nc.d4m
@ -5,8 +5,6 @@ types:
      Altocumulus = 7, Cirrostratus = 8, Cirrocumulus = 9, Cirrus = 10, 
      Missing = 127} ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;

 group: h {
  variables:
--- a/dap4_test/baseline/test_enum_array.4.nc.d4d
+++ b/dap4_test/baseline/test_enum_array.4.nc.d4d
@ -12,7 +12,6 @@ variables:

 // global attributes:
 		string :_dap4.ce = "/primary_cloud[1:2:4]" ;
-		:_DAP4_Little_Endian = 1UB ;
 data:

 primary_cloud = Stratus, Cumulonimbus ;
--- a/dap4_test/baseline/test_enum_array.4.nc.d4m
+++ b/dap4_test/baseline/test_enum_array.4.nc.d4m
@ -12,5 +12,4 @@ variables:

 // global attributes:
 		string :_dap4.ce = "/primary_cloud[1:2:4]" ;
-		:_DAP4_Little_Endian = 1UB ;
 }
--- a/dap4_test/baseline/test_enum_array.nc.d4d
+++ b/dap4_test/baseline/test_enum_array.nc.d4d
@ -10,8 +10,6 @@ variables:
 	cloud_class_t primary_cloud(d5) ;
 		cloud_class_t primary_cloud:_FillValue = Missing ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 data:

 primary_cloud = Clear, Stratus, Clear, Cumulonimbus, _ ;
--- a/dap4_test/baseline/test_enum_array.nc.d4m
+++ b/dap4_test/baseline/test_enum_array.nc.d4m
@ -10,6 +10,4 @@ variables:
 	cloud_class_t primary_cloud(d5) ;
 		cloud_class_t primary_cloud:_FillValue = Missing ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 }
--- a/dap4_test/baseline/test_fill.nc.d4d
+++ b/dap4_test/baseline/test_fill.nc.d4d
@ -5,8 +5,6 @@ variables:
 	uint uv32 ;
 		uv32:_FillValue = 17U ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 data:

 uv8 = 240 ;
--- a/dap4_test/baseline/test_fill.nc.d4m
+++ b/dap4_test/baseline/test_fill.nc.d4m
@ -5,6 +5,4 @@ variables:
 	uint uv32 ;
 		uv32:_FillValue = 17U ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 }
--- a/dap4_test/baseline/test_groups1.nc.d4d
+++ b/dap4_test/baseline/test_groups1.nc.d4d
@ -2,8 +2,6 @@ netcdf test_groups1.nc {
 dimensions:
 	dim1 = 5 ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;

 group: g {
  dimensions:
--- a/dap4_test/baseline/test_groups1.nc.d4m
+++ b/dap4_test/baseline/test_groups1.nc.d4m
@ -2,8 +2,6 @@ netcdf test_groups1 {
 dimensions:
 	dim1 = 5 ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;

 group: g {
  dimensions:
--- a/dap4_test/baseline/test_one_var.nc.d4d
+++ b/dap4_test/baseline/test_one_var.nc.d4d
@ -2,8 +2,6 @@ netcdf test_one_var.nc {
 variables:
 	int t ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 data:

 t = 17 ;
--- a/dap4_test/baseline/test_one_var.nc.d4m
+++ b/dap4_test/baseline/test_one_var.nc.d4m
@ -2,6 +2,4 @@ netcdf test_one_var {
 variables:
 	int t ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 }
--- a/dap4_test/baseline/test_one_vararray.1.nc.d4d
+++ b/dap4_test/baseline/test_one_vararray.1.nc.d4d
@ -6,7 +6,6 @@ variables:

 // global attributes:
 		string :_dap4.ce = "/t[1]" ;
-		:_DAP4_Little_Endian = 1UB ;
 data:

 t = 37 ;
--- a/dap4_test/baseline/test_one_vararray.1.nc.d4m
+++ b/dap4_test/baseline/test_one_vararray.1.nc.d4m
@ -6,5 +6,4 @@ variables:

 // global attributes:
 		string :_dap4.ce = "/t[1]" ;
-		:_DAP4_Little_Endian = 1UB ;
 }
--- a/dap4_test/baseline/test_one_vararray.3.nc.d4d
+++ b/dap4_test/baseline/test_one_vararray.3.nc.d4d
@ -6,7 +6,6 @@ variables:

 // global attributes:
 		string :_dap4.ce = "/t[0:1]" ;
-		:_DAP4_Little_Endian = 1UB ;
 data:

 t = 17, 37 ;
--- a/dap4_test/baseline/test_one_vararray.3.nc.d4m
+++ b/dap4_test/baseline/test_one_vararray.3.nc.d4m
@ -6,5 +6,4 @@ variables:

 // global attributes:
 		string :_dap4.ce = "/t[0:1]" ;
-		:_DAP4_Little_Endian = 1UB ;
 }
--- a/dap4_test/baseline/test_one_vararray.nc.d4d
+++ b/dap4_test/baseline/test_one_vararray.nc.d4d
@ -4,8 +4,6 @@ dimensions:
 variables:
 	int t(d2) ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 data:

 t = 17, 37 ;
--- a/dap4_test/baseline/test_one_vararray.nc.d4m
+++ b/dap4_test/baseline/test_one_vararray.nc.d4m
@ -4,6 +4,4 @@ dimensions:
 variables:
 	int t(d2) ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 }
--- a/dap4_test/baseline/test_opaque.nc.d4d
+++ b/dap4_test/baseline/test_opaque.nc.d4d
@ -4,8 +4,6 @@ types:
 variables:
 	opaque16_t vo1 ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 data:

 vo1 = 0X0123456789ABCDEF0000000000000000 ;
--- a/dap4_test/baseline/test_opaque.nc.d4m
+++ b/dap4_test/baseline/test_opaque.nc.d4m
@ -4,6 +4,4 @@ types:
 variables:
 	opaque8_t vo1 ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 }
--- a/dap4_test/baseline/test_opaque_array.7.nc.d4d
+++ b/dap4_test/baseline/test_opaque_array.7.nc.d4d
@ -9,7 +9,6 @@ variables:

 // global attributes:
 		string :_dap4.ce = "/vo2[1][0:1]" ;
-		:_DAP4_Little_Endian = 1UB ;
 data:

 vo2 =
--- a/dap4_test/baseline/test_opaque_array.7.nc.d4m
+++ b/dap4_test/baseline/test_opaque_array.7.nc.d4m
@ -9,5 +9,4 @@ variables:

 // global attributes:
 		string :_dap4.ce = "/vo2[1][0:1]" ;
-		:_DAP4_Little_Endian = 1UB ;
 }
--- a/dap4_test/baseline/test_opaque_array.nc.d4d
+++ b/dap4_test/baseline/test_opaque_array.nc.d4d
@ -6,8 +6,6 @@ dimensions:
 variables:
 	opaque16_t vo2(d2, d2) ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 data:

 vo2 =
--- a/dap4_test/baseline/test_opaque_array.nc.d4m
+++ b/dap4_test/baseline/test_opaque_array.nc.d4m
@ -6,6 +6,4 @@ dimensions:
 variables:
 	opaque8_t vo2(d2, d2) ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 }
--- a/dap4_test/baseline/test_sequence_1.syn.d4d
+++ b/dap4_test/baseline/test_sequence_1.syn.d4d
@ -8,8 +8,6 @@ types:
 variables:
 	s_t s ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 data:

 s = {{-920699049, 896}} ;
--- a/dap4_test/baseline/test_sequence_1.syn.d4m
+++ b/dap4_test/baseline/test_sequence_1.syn.d4m
@ -8,6 +8,4 @@ types:
 variables:
 	s_t s ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 }
--- a/dap4_test/baseline/test_sequence_2.syn.d4d
+++ b/dap4_test/baseline/test_sequence_2.syn.d4d
@ -10,8 +10,6 @@ dimensions:
 variables:
 	s_t s(_Anonymous2) ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 data:

 s = {{-920699049, 896}}, 
--- a/dap4_test/baseline/test_sequence_2.syn.d4m
+++ b/dap4_test/baseline/test_sequence_2.syn.d4m
@ -10,6 +10,4 @@ dimensions:
 variables:
 	s_t s(_Anonymous2) ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 }
--- a/dap4_test/baseline/test_struct1.nc.d4d
+++ b/dap4_test/baseline/test_struct1.nc.d4d
@ -7,8 +7,6 @@ types:
 variables:
 	s_t s ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 data:

 s = {1, -2} ;
--- a/dap4_test/baseline/test_struct1.nc.d4m
+++ b/dap4_test/baseline/test_struct1.nc.d4m
@ -7,6 +7,4 @@ types:
 variables:
 	s_t s ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 }
--- a/dap4_test/baseline/test_struct_array.6.nc.d4d
+++ b/dap4_test/baseline/test_struct_array.6.nc.d4d
@ -11,7 +11,6 @@ variables:

 // global attributes:
 		string :_dap4.ce = "/s[0:2:3][0:1]" ;
-		:_DAP4_Little_Endian = 1UB ;
 data:

 s =
--- a/dap4_test/baseline/test_struct_array.6.nc.d4m
+++ b/dap4_test/baseline/test_struct_array.6.nc.d4m
@ -11,5 +11,4 @@ variables:

 // global attributes:
 		string :_dap4.ce = "/s[0:2:3][0:1]" ;
-		:_DAP4_Little_Endian = 1UB ;
 }
--- a/dap4_test/baseline/test_struct_array.nc.d4d
+++ b/dap4_test/baseline/test_struct_array.nc.d4d
@ -10,8 +10,6 @@ dimensions:
 variables:
 	s_t s(dx, dy) ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 data:

 s =
--- a/dap4_test/baseline/test_struct_array.nc.d4m
+++ b/dap4_test/baseline/test_struct_array.nc.d4m
@ -10,6 +10,4 @@ dimensions:
 variables:
 	s_t s(dx, dy) ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 }
--- a/dap4_test/baseline/test_struct_array.syn.d4d
+++ b/dap4_test/baseline/test_struct_array.syn.d4d
@ -13,8 +13,6 @@ variables:
 	s_t s(dx, dy) ;
 		string s:_edu.ucar.maps = "/z", "/t" ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 data:

 z = 0.7276533, 0.785633, 0.513679, 0.2468447 ;
--- a/dap4_test/baseline/test_struct_array.syn.d4m
+++ b/dap4_test/baseline/test_struct_array.syn.d4m
@ -13,6 +13,4 @@ variables:
 	s_t s(dx, dy) ;
 		string s:_edu.ucar.maps = "/z", "/t" ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 }
--- a/dap4_test/baseline/test_struct_nested.nc.d4d
+++ b/dap4_test/baseline/test_struct_nested.nc.d4d
@ -15,8 +15,6 @@ types:
 variables:
 	x_t x ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 data:

 x = {{1, -2}, {255, 90}} ;
--- a/dap4_test/baseline/test_struct_nested.nc.d4m
+++ b/dap4_test/baseline/test_struct_nested.nc.d4m
@ -15,6 +15,4 @@ types:
 variables:
 	x_t x ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 }
--- a/dap4_test/baseline/test_struct_nested3.nc.d4d
+++ b/dap4_test/baseline/test_struct_nested3.nc.d4d
@ -12,8 +12,6 @@ types:
 variables:
 	x_t x ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 data:

 x = {{{17}}} ;
--- a/dap4_test/baseline/test_struct_nested3.nc.d4m
+++ b/dap4_test/baseline/test_struct_nested3.nc.d4m
@ -12,6 +12,4 @@ types:
 variables:
 	x_t x ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 }
--- a/dap4_test/baseline/test_struct_type.nc.d4d
+++ b/dap4_test/baseline/test_struct_type.nc.d4d
@ -7,8 +7,6 @@ types:
 variables:
 	s_t s ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 data:

 s = {1, -2} ;
--- a/dap4_test/baseline/test_struct_type.nc.d4m
+++ b/dap4_test/baseline/test_struct_type.nc.d4m
@ -7,6 +7,4 @@ types:
 variables:
 	s_t s ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 }
--- a/dap4_test/baseline/test_unlim1.nc.d4d
+++ b/dap4_test/baseline/test_unlim1.nc.d4d
@ -16,7 +16,6 @@ variables:
 		string pr:_edu.ucar.maps = "/time", "/lat", "/lon" ;

 // global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 		string :title = "example for workshop" ;
 data:

--- a/dap4_test/baseline/test_unlim1.nc.d4m
+++ b/dap4_test/baseline/test_unlim1.nc.d4m
@ -16,6 +16,5 @@ variables:
 		string pr:_edu.ucar.maps = "/time", "/lat", "/lon" ;

 // global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 		string :title = "example for workshop" ;
 }
--- a/dap4_test/baseline/test_utf8.nc.d4d
+++ b/dap4_test/baseline/test_utf8.nc.d4d
@ -4,8 +4,6 @@ dimensions:
 variables:
 	string vs(d2) ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 data:

 vs = "Καλημέα", "abc" ;
--- a/dap4_test/baseline/test_utf8.nc.d4m
+++ b/dap4_test/baseline/test_utf8.nc.d4m
@ -4,6 +4,4 @@ dimensions:
 variables:
 	string vs(d2) ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 }
--- a/dap4_test/baseline/test_vlen1.nc.d4d
+++ b/dap4_test/baseline/test_vlen1.nc.d4d
@ -7,8 +7,6 @@ types:
 variables:
 	x_t x ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 data:

 x = {{1}, {3}, {5}, {7}} ;
--- a/dap4_test/baseline/test_vlen1.nc.d4m
+++ b/dap4_test/baseline/test_vlen1.nc.d4m
@ -7,6 +7,4 @@ types:
 variables:
 	x_t x ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 }
--- a/dap4_test/baseline/test_vlen2.nc.d4d
+++ b/dap4_test/baseline/test_vlen2.nc.d4d
@ -10,8 +10,6 @@ dimensions:
 variables:
 	x_t x(d3, d2) ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 data:

 x =
--- a/dap4_test/baseline/test_vlen2.nc.d4m
+++ b/dap4_test/baseline/test_vlen2.nc.d4m
@ -10,6 +10,4 @@ dimensions:
 variables:
 	x_t x(d3, d2) ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 }
--- a/dap4_test/baseline/test_vlen3.nc.d4d
+++ b/dap4_test/baseline/test_vlen3.nc.d4d
@ -10,8 +10,6 @@ types:
 variables:
 	v1_t v1 ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 data:

 v1 = {{{1}, {3}, {5}, {7}}} ;
--- a/dap4_test/baseline/test_vlen3.nc.d4m
+++ b/dap4_test/baseline/test_vlen3.nc.d4m
@ -10,6 +10,4 @@ types:
 variables:
 	v1_t v1 ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 }
--- a/dap4_test/baseline/test_vlen4.nc.d4d
+++ b/dap4_test/baseline/test_vlen4.nc.d4d
@ -12,8 +12,6 @@ dimensions:
 variables:
 	v1_t v1 ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 data:

 v1 = {{{{1}, {3}, {5}, {7}}, {}}} ;
--- a/dap4_test/baseline/test_vlen4.nc.d4m
+++ b/dap4_test/baseline/test_vlen4.nc.d4m
@ -12,6 +12,4 @@ dimensions:
 variables:
 	v1_t v1 ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 }
--- a/dap4_test/baseline/test_vlen5.nc.d4d
+++ b/dap4_test/baseline/test_vlen5.nc.d4d
@ -12,8 +12,6 @@ dimensions:
 variables:
 	v1_t v1(d2) ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 data:

 v1 = {{{1}, {3}, {5}, {7}}}, {{{100}, {200}}} ;
--- a/dap4_test/baseline/test_vlen5.nc.d4m
+++ b/dap4_test/baseline/test_vlen5.nc.d4m
@ -12,6 +12,4 @@ dimensions:
 variables:
 	v1_t v1(d2) ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 }
--- a/dap4_test/baseline/test_vlen6.nc.d4d
+++ b/dap4_test/baseline/test_vlen6.nc.d4d
@ -9,8 +9,6 @@ dimensions:
 variables:
 	v1_t v1(d) ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 data:

 v1 = {{1}, {3}, {5}, {7}}, {{17}, {19}} ;
--- a/dap4_test/baseline/test_vlen6.nc.d4m
+++ b/dap4_test/baseline/test_vlen6.nc.d4m
@ -9,6 +9,4 @@ dimensions:
 variables:
 	v1_t v1(d) ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 }
--- a/dap4_test/baseline/test_vlen7.nc.d4d
+++ b/dap4_test/baseline/test_vlen7.nc.d4d
@ -9,8 +9,6 @@ dimensions:
 variables:
 	v1_t v1(d) ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 data:

 v1 = {{17}, {19}, {21}} ;
--- a/dap4_test/baseline/test_vlen7.nc.d4m
+++ b/dap4_test/baseline/test_vlen7.nc.d4m
@ -9,6 +9,4 @@ dimensions:
 variables:
 	v1_t v1(d) ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 }
--- a/dap4_test/baseline/test_vlen8.nc.d4d
+++ b/dap4_test/baseline/test_vlen8.nc.d4d
@ -10,8 +10,6 @@ dimensions:
 variables:
 	v1_t v1(d1, d2) ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 data:

 v1 =
--- a/dap4_test/baseline/test_vlen8.nc.d4m
+++ b/dap4_test/baseline/test_vlen8.nc.d4m
@ -10,6 +10,4 @@ dimensions:
 variables:
 	v1_t v1(d1, d2) ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 }
--- a/dap4_test/baselineraw/test_anon_dim.2.syn.dmp
+++ b/dap4_test/baselineraw/test_anon_dim.2.syn.dmp
@ -6,7 +6,6 @@ variables:

 // global attributes:
 		string :_dap4.ce = "/vu32[0:3]" ;
-		:_DAP4_Little_Endian = 1UB ;
 data:

 vu32 = -1169720286, -920699049, -2088732436, 1060190036 ;
--- a/dap4_test/baselineraw/test_anon_dim.syn.dmp
+++ b/dap4_test/baselineraw/test_anon_dim.syn.dmp
@ -4,8 +4,6 @@ dimensions:
 variables:
 	int vu32(_Anonymous6) ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 data:

 vu32 = -1169720286, -920699049, -2088732436, 1060190036, -1123468835, 
--- a/dap4_test/baselineraw/test_atomic_array.5.nc.dmp
+++ b/dap4_test/baselineraw/test_atomic_array.5.nc.dmp
@ -12,7 +12,6 @@ variables:

 // global attributes:
 		string :_dap4.ce = "/vu8[1][0:2:2];/vd[1];/vs[1][0];/vo[0][1]" ;
-		:_DAP4_Little_Endian = 1UB ;
 data:

 vu8 =
--- a/dap4_test/baselineraw/test_atomic_array.8.nc.dmp
+++ b/dap4_test/baselineraw/test_atomic_array.8.nc.dmp
@ -6,7 +6,6 @@ variables:

 // global attributes:
 		string :_dap4.ce = "/v16[0:1,3]" ;
-		:_DAP4_Little_Endian = 1UB ;
 data:

 v16 = 1, 2, 4 ;
--- a/dap4_test/baselineraw/test_atomic_array.9.nc.dmp
+++ b/dap4_test/baselineraw/test_atomic_array.9.nc.dmp
@ -6,7 +6,6 @@ variables:

 // global attributes:
 		string :_dap4.ce = "/v16[3,0:1]" ;
-		:_DAP4_Little_Endian = 1UB ;
 data:

 v16 = 4, 1, 2 ;
--- a/dap4_test/baselineraw/test_atomic_array.nc.dmp
+++ b/dap4_test/baselineraw/test_atomic_array.nc.dmp
@ -22,8 +22,6 @@ variables:
 	cloud_class_t primary_cloud(d5) ;
 		cloud_class_t primary_cloud:_FillValue = Missing ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 data:

 vu8 =
--- a/dap4_test/baselineraw/test_atomic_array.syn.dmp
+++ b/dap4_test/baselineraw/test_atomic_array.syn.dmp
@ -22,8 +22,6 @@ variables:
 	cloud_class_t primary_cloud(d5) ;
 		cloud_class_t primary_cloud:_FillValue = Missing ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 data:

 vu8 =
--- a/dap4_test/baselineraw/test_atomic_types.nc.dmp
+++ b/dap4_test/baselineraw/test_atomic_types.nc.dmp
@ -24,8 +24,6 @@ variables:
 	cloud_class_t secondary_cloud ;
 		cloud_class_t secondary_cloud:_FillValue = Missing ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 data:

 v8 = -128 ;
--- a/dap4_test/baselineraw/test_atomic_types.syn.dmp
+++ b/dap4_test/baselineraw/test_atomic_types.syn.dmp
@ -24,8 +24,6 @@ variables:
 	cloud_class_t secondary_cloud ;
 		cloud_class_t secondary_cloud:_FillValue = Missing ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 data:

 v8 = 58 ;
--- a/dap4_test/baselineraw/test_enum.nc.dmp
+++ b/dap4_test/baselineraw/test_enum.nc.dmp
@ -8,8 +8,6 @@ variables:
 	cloud_class_t primary_cloud ;
 		cloud_class_t primary_cloud:_FillValue = Missing ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 data:

 primary_cloud = Stratus ;
--- a/dap4_test/baselineraw/test_enum_2.nc.dmp
+++ b/dap4_test/baselineraw/test_enum_2.nc.dmp
@ -5,8 +5,6 @@ types:
      Altocumulus = 7, Cirrostratus = 8, Cirrocumulus = 9, Cirrus = 10, 
      Missing = 127} ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;

 group: h {
  variables:
--- a/dap4_test/baselineraw/test_enum_array.4.nc.dmp
+++ b/dap4_test/baselineraw/test_enum_array.4.nc.dmp
@ -12,7 +12,6 @@ variables:

 // global attributes:
 		string :_dap4.ce = "/primary_cloud[1:2:4]" ;
-		:_DAP4_Little_Endian = 1UB ;
 data:

 primary_cloud = Stratus, Cumulonimbus ;
--- a/dap4_test/baselineraw/test_enum_array.nc.dmp
+++ b/dap4_test/baselineraw/test_enum_array.nc.dmp
@ -10,8 +10,6 @@ variables:
 	cloud_class_t primary_cloud(d5) ;
 		cloud_class_t primary_cloud:_FillValue = Missing ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 data:

 primary_cloud = Clear, Stratus, Clear, Cumulonimbus, _ ;
--- a/dap4_test/baselineraw/test_fill.nc.dmp
+++ b/dap4_test/baselineraw/test_fill.nc.dmp
@ -5,8 +5,6 @@ variables:
 	uint uv32 ;
 		uv32:_FillValue = 17U ;

-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 data:

 uv8 = 240 ;
--- a/dap4_test/baselineraw/test_fillmismatch.nc.dmp
+++ b/dap4_test/baselineraw/test_fillmismatch.nc.dmp
@ -4,7 +4,4 @@ variables:
 	short v16 ;
 	uint uv32 ;
 		uv32:_FillValue = 17U ;
-
-// global attributes:
-		:_DAP4_Little_Endian = 1UB ;
 }
--- a/Show More
+++ b/Show More