Here are the classes, structs, unions and interfaces with brief descriptions:

Nfunctions
CGeoConstraint
CGeoGridFunction
CGridFunction
CGridGeoConstraint
Cgse_arg
CGSEClause
Nlibdap	Top level DAP object to house generic methods
CAISConnect
CAISDatabaseParser
CAISDatabaseReadFailed
CAISDatabaseWriteFailed
CAISMerge	Merge AIS resources
CAISResources	Manage AIS resources
CAlarmHandler
CAncillary
CArray	A multidimensional array of identical data types
Cdimension
Cvar_chunk_info_t
Cvar_storage_info
CAttrTable	Contains the attributes for a dataset
Centry
CBaseTypeFactory
CByte	Holds a single byte
Ccache_entry
Cce_parser_arg
CChildLocker
Cchunked_inbuf
Cchunked_istream
Cchunked_ostream	A C++ stream class for chunked data. This class uses the chunked_outbuf class to provide for chunked binary serialization of data as specified by DAP4. Information to be serialized is broken into 'chunks' that are no more than 2^24 bytes in length. Each chunk is prefixed by a 4 byte header that indicates the type of chunk and size (number of bytes in the chunk body). There are three types of chunk: Data; End; and Error. In normal operation, a DAP4 data document/response is serialized as a sequence of DATA chunks followed by one END chunk (which may be zero bytes in length). If, during serialization, an error is detected, the currently buffered (but not sent) data are discarded and an ERROR chunk is sent with an error message
Cchunked_outbuf	Output buffer for a chunked stream This performs buffered output encoding the data in the stream using the simple chunking protocol defined for DAP4's binary data transmission. Each block of data is prefixed by four bytes: A CHUNK TYPE byte followed by three bytes that are the CHUNK SIZE. There are three CHUNK TYPES: data, end and error, indicated by the code values 0x00, 0x01 and 0x02. The size of a chunk is limited to 2^24 data bytes + 4 bytes for the chunk header
CClause	Holds a fragment of a constraint expression
CConnect	Holds information about the link from a DAP2 client to a dataset
CConstraintEvaluator	Evaluate a constraint expression
CConstructor
CD4AsyncUtil
CD4Attribute
CD4Attributes
CD4BaseTypeFactory
CD4CEScanner
CD4Connect
CD4ConstraintEvaluator
CD4Dimension
CD4Dimensions
CD4Enum	Holds a DAP4 enumeration
CD4EnumDef
CD4EnumDefs
CD4FilterClause	DAP4 filter clauses
CD4FilterClauseList	List of DAP4 Filter Clauses
CD4FunctionEvaluator
CD4FunctionScanner
CD4Group
CD4Map
CD4Maps
CD4Opaque
CD4ParseError
CD4ParserSax2
CD4ResponseBuilder
CD4RValue
CD4RValueList
CD4StreamMarshaller	Marshaller that knows how to marshal/serialize dap data objects to a C++ iostream using DAP4's receiver-makes-right scheme. This code adds checksums to the stream and uses the xdr library to encode real values if the underlying representation is not IEEE 754. It also supports computing the checksum only
CD4StreamUnMarshaller	Read data from the stream made by D4StreamMarshaller
CDAPCache3	Implementation of a caching mechanism for compressed data. This cache uses simple advisory locking found on most modern unix file systems. Compressed files are decompressed and stored in a cache where they can be used over and over until removed from the cache. Several processes can share the cache with each reading from files. At the same time, new files can be added and the cache can be purged, without disrupting the existing read operations
CDapIndent	Class with static methods to help with indentation of debug information
CDapObj	Libdap base object for common functionality of libdap objects
CDapXmlNamspaces
CDAS	Hold attribute data for a DAP2 dataset
CDataDDS	Holds a DAP2 DDS
CDDS
CDDXParseFailed
CDDXParser
CDMR
CError	A class for error processing
CEventHandler
Cfdinbuf
Cfdistream
Cfdostream
Cfdoutbuf
CFloat32	Holds a 32-bit floating point value
CFloat64	Holds a 64-bit (double precision) floating point value
Cfpinbuf
Cfpistream
CHTTPCacheInterruptHandler
CHTTPCacheResponse
CHTTPCacheTable
CCacheEntry
CHTTPConnect
CHTTPResponse
CInt16	Holds a 16-bit signed integer value
CInt32	Holds a 32-bit signed integer
CInt64	Holds a64-bit signed integer
CInt8	Holds an 8-bit signed integer value
CInternalErr	A class for software fault reporting
CKeywords
CLocker
CMarshaller	Abstract base class used to marshal/serialize dap data objects
CMarshallerThread
CNoSuchPrimaryResource
Cparser_arg	Pass parameters by reference to a parser
CPipeResponse	Encapsulate a response. This class provides special treatment for 'stream pipes.' It arranges to close them using pclose() instead of fclose()
CRCReader
CRegex	Regular expression matching
CResource	Associate a rule with an ancillary resource
CResponse
CResponseTooBigErr
Crvalue
CServerFunction
CServerFunctionsList
CSignalHandler
CSignalHandlerRegisteredErr
CStdinResponse	Encapsulate a response read from stdin
CStr	Holds character string data
CStructure	Holds a structure (aggregate) type
CUInt16	Holds an unsigned 16-bit integer
CUInt32	Holds a 32-bit unsigned integer
CUInt64	Holds a 64-bit unsigned integer
CUnMarshaller	Abstract base class used to unmarshall/deserialize dap data objects
CUrl	Holds an Internet address (URL)
CXDRFileMarshaller	Marshaller that knows how to marshall/serialize dap data objects to a file using XDR
CXDRFileUnMarshaller	Unmarshaller that knows how to unmarshall/deserialize dap objects using XDR from a file
CXDRStreamMarshaller	Marshaller that knows how serialize dap data objects to a C++ iostream using XDR
CXDRStreamUnMarshaller	Unmarshaller that knows how to unmarshall/deserialize dap objects using XDR from a file
CXDRUtils
CXMLWriter
CBaseType
CCrc32
Cd4_ceFlexLexer
Cd4_functionFlexLexer
CGetOpt
Cifstream	STL class
Cistream	STL class
Cofstream	STL class
Costream	STL class
Costringstream	STL class
Cstring	STL class
Cconst_iterator	STL iterator class
Cconst_reverse_iterator	STL iterator class
Citerator	STL iterator class
Creverse_iterator	STL iterator class
CVector
Cvector	STL class
Cconst_iterator	STL iterator class
Cconst_reverse_iterator	STL iterator class
Citerator	STL iterator class
Creverse_iterator	STL iterator class