Author: Robert A. van Engelen

# Changelog

- Version 1.1

- Added typedef conventions
- Added enumerations
- Added hexBinary encoding
- Added base64 encoding
- Enable pass by reference operator (&) for output parameter
- Enable specification of methods in classes

- Version 1.2 (9/9/2001)

- Added WSDL generator

- Version 1.2w (9/14/2001)

- Win32 port
- Fixed a socket communication problem in win32 version
- Added namespace name pattern matching to ease validation

- Version 1.2.1 (10/24/2001)

- Chunked HTTP 1.1 transfer support
- Improved buffering
- Fixed a problem with nested vector allocation

- Version 1.2.2 (11/2/2001)

- Support for special XML element names with dots, underscores, and center dots (see documentation section 5.3)
- Fixed a decoding problem with dynamic array of pointers to polymorphic objects
- Fixed an encoding problem with enumerations
- Added a "safe-mode" flag to disable serialization of multi-referenced objects:

      soap_disable_href = 1;

  You can set this global flag anywere in the code, but at least before serialization is performed. It will disable the use of href attributes when sending multi-reference data. Instead, the data is copied in the payload. When set, this flag will hang the serializer when sending cyclic data structures.

- Version 1.2.3 (12/5/2001)

- Added bool type encoding/decoding.
- Added dynamic multi-dimensional arrays.
- Added support for primitive polymorphic types.
- Added full support for CDATA content decoding.
- More convenient customization of SOAP Headers and Faults. No separate `soapheader.h` and `soapfault.h` files required (and therefore no `.cpp` files have to be created for these). Instead, the compiler generates customized SOAP Header and SOAP Fault marshalling routines when struct/class `SOAP_ENV__Fault` and/or `SOAP_ENV__Header` are specified in the header file input to the compiler.
- On-demand generation of the marshalling routines for the primitive types, which reduces the size of the executables.
- Fixed a WSDL incompatibility problem in the WSDL generator.
- Improved decoding of multi-reference elements (no `xsi:type` required anymore in receiving message so gSOAP does not break).
- Improved support for encoding/decoding indirect data (e.g. pointers to pointers to data).
- Improved encoding of data with the same pointers to shared data but with the shared data declared with different XML schema types (formerly encoded as multi-reference data which could cause type incmpatibilities at the receiving side). For example, in the declarations `typedef char *xsd__NCName; xsd__NCName *s="SOAP"; char *t = s;` the pointers `s` and `t` point to the same data, but will not be encoded as multi-reference data since the types are different.
- Added flag:

      soap_enable_null = 1;

  When set, all NULL pointers will be explicitly encoded. By default, NULL pointers are omitted from the SOAP payload. For example, with this flag set all NULL strings and other NULL pointer data will appear as nil values in the SOAP payload.
- Added flag:

      soap_enable_embedding = 1;

  When set, multi-reference data will be encoded inline which will guarantee the exact preservation of the structure of the data transmitted. However, some SOAP implementations do not support embedding inline multi-reference data although this encoding style is likely to be included in future verions of the SOAP protocol. The flag is useful when creating C++ applications that need to communicate data to eachother and the data structures need to be preserved. Setting this flag may cause a duplication of multi-reference data by the receiver created with the SOAP stub compiler when the data is part of a struct/class or array. The data is not copied by the receiver when the struct/class or arrays use pointers to the data type.
- Added the ability to declare virtual destructors.
- Fixed a compilation error with fixed-size array of pointers.
- Fixed a problem with padding in Base64 (en/de)coding.
- Fixed XML entity decoding (hexadecimal).
- Added encoding of sparse arrays. A sparse array MUST be declared as a (fixed-size of dynamic) array of pointers. NULL pointer values are omitted from the output and SOAP-ENC:position attributes are used for non-NULL elements.
- Changed soap_put and soap_get functions to include explicit schema type parameters. This fixed a problem with Web services that need to return typedef-ed XML schema types The new stdsoap.cpp and stdsoap.h files are incompatible with the previous version(s).
- Added the ability to ignore the names of accessors when decoding fields through the use of a leading `_` in a field name. For example:

      ns__mymethod(xsd__string in, xsd__string &_return);

  When used to invoke a remote method, the actual element name of the remote return parameter used by the service is insignificant.
- Improved memory management. Added new function: `soap_destroy()` to remove all class instances.
- Improved documentation.
- Added time_t type support, but still need to add encoding/decoding routines to the runtime (next version).
- Added wchar_t type support, but still need to add encoding/decoding routines to the runtime (next version).

- Version 1.2.4 (12/17/2001)

- Added support for wide character strings (wchar_t*).
- Added support for time_t type.
- Added support for SOAP literal encoding.
- Fixed an obscure bug in the deserialization of data from the SOAP4R toolkit that caused the deserializer to hang.
- Fixed a problem with the soap_disable_href flag.
- Fixed a problem with the position attributes in sparse multi-dimensional arrays.
- Fixed a problem with the generation of .nsmap files.
- Fixed a problem with mixed content decoding in strings.

- Version 1.2.5 (12/27/2001)

- Fixed a memory leak in the block allocation scheme used for strings, hexBinary, and base64 types.
- Fixed a bug in the WSDL generator for fixed-size arrays.
- Fixed a problem with the use of trailing underscores in field names in struct/class declarations.

- Version 1.2.6 (1/25/2002)

- Improved portability.
- Improved id/href hash table efficiency and storage.
- Improved namespace URI matching with wildcards.
- Improved stand-alone deployment.
- Added `soap_disable_response_count` flag.
- Fixed operator declaration parsing (cast operators).
- Fixed a WSDL generator bug for output parameters and enumeration types.
- Renamed function `soap_return_fault()` into `soap_send_fault()`.

- Version 2.0 (2/2/2002)

- Rewrote the compiler and the run-time to create a thread safe implementation.

- Versions 1.2.7 and 2.0.1 (2/11/2002)

- Added compiler options (-h -c -d -p).
- Added optional specification of service name, location, and namespace URI in header file.
- Improved interoperability.

- Versions 1.2.8 and 2.0.2 (2/24/2002)

- Added function callbacks to support customized I/O and HTTP operations. This allows for plug-in HTTP code, NSAPI interface code, reading/writing from/to files or string buffers, etc.
- Added HTTP 1.0/1.1 keep-alive support.
- Added HTTP 1.1 chunked transfer support.
- Added `soap_disable_request_count` flag.
- Added `soap_enable_array_overflow` flag.
- Added type naming conventions to serialize elements without generating `xsi:type` attributes.
- Fixed a fixed-size array decoding problem (type mismatch).
- Fixed </sequence/> bug in the WSDL generators.

- Versions 1.3 and 2.1 (3/10/2002)

- Added client-side SSL (HTTPS) support (thanks to Massimo Cafaro for his suggestions).
- Added a naming convention for dynamic array `__ptr` fields which enables the naming of the XML tags of array elements.
- Added WSDL Header and Fault schema generation.
- Improved doc/literal encoding style.
- Improved WSDL service/schema namespace generation.
- Fixed SOAP-ENV:Headers to be self contained.
- Fixed WSDL generation of xsd schema types declared as string.
- Fixed a method overriding type clash for derived classes.
- Fixed spurious occurrence of id="-1" with soap_enable_null flag enabled.
- Fixed a front-end gSOAP compiler problem with forward and cyclic struct declarations.

- Versions 1.3.1 and 2.1.1 (3/25/2002)

- Added header file source constructs to support transient data types and transient struct/class fields to control gSOAP's code generatiion window for (de)serialization routines.
- Added callback for handling XML elements that are ignored on the receiving side (e.g. because of schema type problems). This feature is intended to enhance the reliability of services/clients.
- Added server-side SSL support and included an example multi-threaded stand-alone SSL secure SOAP server example.
- Added proxy server support.
- Improved message logging in gSOAP 2.1.1 (thanks to Jessie Ragsdale for his suggestions).
- Fixed WSDL generation for dynamic arrays.
- Fixed deserialization of empty multi-ref derived class instances.

- Versions 1.3.2 and 2.1.2 (4/15/2002)

- Added socket timeout management.
- Added optional client and server cookie support.
- Added support for maxOccurs="unbounded" for arbitrary elements in complexTypes (not just limited to SOAP arrays).
- Improved generation of schema <extension> definitions to allow XML validation in the presence of class overriding.
- Fixed ULONG64 type handling.
- Fixed light validation problem (now rejects invalid XML schema URIs).
- Fixed a deserialization type mismatch with typedef-ed pointer primitives.
- Fixed WSDL and schema interoperability problems.

- Versions 1.3.3 and 2.1.3 (4/27/2002)

- Added 'mustUnderstand' declaration qualifier for SOAP Header processing.
- Added soap.actor attribute for SOAP Header processing.
- Added method-header-part directive to identify methods with header message associations (WSDL requirement).
- Added bitmask (de)serialization.
- Added FastCGI support.
- Improved DLL build support (gSOAP 2.1.3 only).
- Improved WinCE support (gSOAP 2.1.3 only, thanks to Sean Ryan for his suggestions).
- Improved Mac OS X support.
- WSDL generator improvements and fixes.
- Workaround a bug in .NET SOAP Headers (non-unique id name values in .NET).
- Fixed disable_href=1 bug.
- Fixed `XML in string parsing' code generation problem.

- Versions 1.3.4 and 2.1.4 (6/9/2002)

- Added non-blocking soap_accept() with timeout management.
- Added support for SOAP Header and Fault declared as classes.
- Added syntax for 'extern' declarations for transient types and fields.
- Added support for SOAP Headers in SOAP Fault messages.
- Added one-way SOAP messages (2.1.4 only).
- Added support for user-defined (de)serializers (2.1.4 only).
- Improved object memory management.
- Improved support for AIX and HP platforms.
- Fixed proxy server connect bug.
- Fixed an OpenSSL bug.
- Fixed soap_instantiate_ClassX() derived class allocation problem.
- Fixed generation of spurious .xsd files when lots of trailing underscores are used by identifiers in the header file.
- Fixed syntax error that occured with header files containing cyclic class declarations.
- Fixed 'class in struct' and 'vector of classes' VMT initialization bugs.

- Version 2.1.5 (6/22/2002)

- Added non-blocking remote method calls (not supported in win32 version).
- Added specification of default values for struct/class fields.
- Added specification of minOccurs and maxOccurs for struct/class fields.
- Added resolution operator '::' parsing.
- Added abstract method declaration support.
- Fixed WSDL generation of SOAP doc/lit.
- Fixed WITH_FASTCGI option.

- Version 2.1.6 (7/10/2002)

- Added DIME attachment support.
- Added win32 non-blocking sockets.
- Changed "%lld"/"%llu" format strings into "%I64d"/"%I64u" format string for win32.
- Improved I/O.
- Fixed multi-dimensional dynamic array (de)serialization.
- Fixed WSDL enum and header namespace generation.

- Version 2.1.7 (8/6/2002)

- Added generation of example SOAP/XML request and response messages by the compiler.
- Added RSA to SSL stack.
- Added two callbacks to the HTTP stack for efficient handling of HTTP headers in Apache-mod and IIS.
- Added compiler option -m (malloc() memory control) and updated doc on memory allocation policies.
- Added compiler option -i to support #include and #define directives.
- Improved HTTP cookie support to handle new and old cookie protocols.
- Improved external class (de)serialization support (std::string example is included).
- Fixed a SSL+proxy connect problem.
- Fixed uninitialized '//gsoap..executable:' string which caused sporadic exits.
- Fixed XML literal string encoding problem introduced with DIME.
- Fixed and removed WSDL duplicate response elements.
- Fixed LONG64 and ULONG64 types for WinCE.

- Version 2.1.8 (8/28/2002)

- Added client-side proxy class source code generation.
- Added soap.enable_strict flag to enable very strict validation of messages (unknown namespace URIs and XML elements are not allowed).
- Added soap.socket_flags to control socket send() and recv() flags, e.g. to disable broken pipe signals (soap.socket_flags=MSG_NOSIGNAL).
- Added '//gsoap ns service method-action' header file directive.
- Added server-side soap_receiver_fault() and soap_sender_fault() functions to return SOAP 1.1 and SOAP 1.2 faults.
- Added seeding of the PRNG for SSL.
- Added soapcpp2 compiler option '-2' to automate SOAP 1.2 support (SOAP 1.2 features are Beta-release).
- Changed keep-alive support (see docs).
- Improved WSDL output.
- Workaround Bison 1.6 for win32 bug in gSOAP win32 version.
- Fixed a wild-card matching bug in soap_tag_cmp()
- Fixed a string deserialization problem.
- Fixed a deserialization bug that can occur in a client-server combination with gSOAP and Apache Axis.

- Version 2.1.9 (9/08/2002)

- Added HTTP proxy authentication.
- Added plug-in registry (Beta).
- Changed compiler exit status for compilation errors.
- Fixed stdin/stdout binary mode for DIME transfer with gSOAP for win32.
- Fixed win32 soapcpp2.exe bug in .res.xml file generation.

- Version 2.1.10 (10/14/2002)

- Added '//gsoap ns service method-documentation:' directive.
- Added provision for additional documentation text with '//gsoap ns service name:' directive.
- Added #import directive to (recursively) import gSOAP header files.
- Added plugin features and included a plugin example in 'extras' directory.
- Added automake/autoconf to generic gSOAP package (thanks to Christian Aberger).
- Added -DWITH_LOCALTIME compilation option to control time_t (de)serialization.
- Changed time_t (de)serialization (now uses timegm() and gmtime() to handle UTC). Found that mktime() library call is buggy on some systems.
- Improved and reorganized package directory structure.
- Fixed DDL linkage problem with instantiate/delete routines dealing with class instance memory management.
- Fixed compilation problem with Sun Workshop CC compiler and other compilers that adopt a specfic class VMT structure that could break object (de)serializers.
- Fixed bug in WSDL generator with multiple service namespaces.

- Version 2.1.11 (11/10/2002)

- Added a multi-functional SOAP router application (message forwarding and message relay server).
- Added keep-alive support for asynchronous one-way messages.
- Improved parsing and handling of function prototypes and class methods.
- Improved modular design to enable the compilation and linkage of multiple client and service modules.
- Improved user-defined SOAP Fault detail handling.
- Fixed SSL_accept bug.
- Fixed serialization of pointers to dynamic arrays with multi-references.

- Version 2.2 (12/12/2002)

- Added XML attribute (de)serialization support.
- Added XSD QName parsing and conversion support (typedef char *xsd__QName).
- Added compression support (-DWITH_ZLIB requires Zlib).
- Changed and improved transport and encoding settings by splitting up sending and receiving side flags into separate sets. Depricated soap.enable_X and soap.disable_X flags.
- Improved keep-alive support (automatic client and server sides).
- Fixed a bug in mustUnderstand handling.
- Fixed a sporadic crash of the gSOAP compiler under win32.
- Fixed user-defined SOAP Fault output in WSDL generator.

- Version 2.2.1 (12/18/2002)

- Added callbacks to enable custom streaming of DIME attachments.
- Fixed broken serialization of pointers to dynamic arrays with NULL __ptr
- Fixed some WSDL issues.

- Version 2.2.2 (1/25/2003)

- Added gzip support (-DWITH_GZIP requires Zlib).
- Added faccept() callback.
- Improved HTTP chunking.
- Fixed OpenSSL and accept_timeout (OpenSSL requires blocking sockets).
- Fixed HTTP header buffering.
- Fixed UTF8 decoding of a subset of characters (2-octet UTF).
- Fixed 'operator==' parsing.
- Fixed a couple of WSDL issues.

- Version 2.2.3 (3/2/2003)

- Added server-side HTTP basic authentication.
- Improved speed.
- Improved Tru64 portability.
- Changed fpost() function callback signature: added 'int port' argument and added port number to the Host: HTTP header.
- Fixed memory leak in SSL connect when using OpenSSL DH.
- Fixed custom (de)serializer definitions parsing.
- Fixed a gzip/deflate bug with large transfers.
- Fixed use of ftime() for time_t (de)serialization with timezones.
- Fixed a problem with concurrent access to global namespace table by multiple threads.
- Fixed crash with //gsoap name directive.
- Fixed deserialization bug with multi-ref object encoding by Apache Axis.

- Version 2.3.1-8 (9/24/2003)

- Updated SOAP 1.2 support (implements the SOAP 1.2 recommendation).
- Added STL container support and built-in std::string encoding.
- Added stand-alone Web server example to serve static and dynamic pages with a new HTTP GET plugin.
- Added void* (de)serialization, e.g. useful to support polymorphism with C applications and as an alternative to union types.
- Added XML DOM parser to support SOAP document encoding and for mixing of application data (de)serialization within an XML DOM.
- Added WITH_LEAN and WITH_LEANER compilation flags to improve support for small-memory devices such as WinCE and Palm.
- Added SOAP_XML_CANONICAL flag for canonical XML output (XML-C14N support and SOAP 1.2 normalization support).
- Added '//gsoap ns method-encoding:' directive.
- Added '//gsoap ns schema import:' directive.
- Added optional class getter and setter methods for object (de)serialization.
- Added 'volatile' qualifier to indicate that certain type declarations should be treated 'as-is' when types are declared externally (e.g. part of a library).
- Added a new string notation for declarations to specify simpleType restriction patterns.
- Added soapcpp2 -I option to indicate #import path.
- Added support for (de)serialization of application data to C++ iostreams.
- Added fsslauth() callback.
- Added HTTP code error values.
- Added SOAP_MALLOC and SOAP_FREE macros to replace malloc() and free().
- Added soap_strdup(soap, string) to copy strings in gSOAP's memory space.
- Added chunked streaming DIME output (thanks to J. Li for his suggestions).
- Added SOAP_SOCKET for win32 support (thanks to B. Gille for his suggestions).
- Added SO_LINGER support (soap.connect_flags).
- Added support for iso-8859-1 encoded XML parsing (default is utf8).
- Added #module directive to build shared libraries.
- Added C++ namespaces support to enable the compilation and linkage of multiple client and service codes.
- Added WITH_CASEINSENSITIVETAGS compilation flag to enable case insensitive XML parsing.
- Improved WSDL types schema output.
- Improved custom (de)serialization (note: extras/stringtest example has been changed).
- Improved SOAP literal encoding.
- Improved speed.
- Improved HTTP1.0/1.1 support.
- Removed soap.defaultNamespace in favor of automatic SOAP literal output based on soap.encodingStyle value.
- Fixed GMT to DST localtime conversion, but still issues with Sun Solaris.
- Fixed dynamic array __offset handling.
- Fixed class definition order.
- Fixed sporadic memory leak in HTTP cookie reader.
- Fixed multi-threaded server-side OpenSSL initialization.
- Fixed enumeration-based XML attribute deserialiation.
- Fixed SOAP-ENC:position attribute placement when arrays of pointers are mixed with nillable data.
- Fixed crash when parsing incorrect SOAP/XML attribute content.

- Version 2.4 (12/20/2003)

- New WSDL parser and importer with improved support for SOAP document style and literal encoding.
- Added optional full schema validation (partial by default). Use SOAP_XML_STRICT flag.
- Added SSL session caching.
- Added soap_set_namespaces() to switch namespace tables.
- Fixed plugin memory leak. REQUIRED CHANGE to plugin allocation and copying.
- Fixed server-side blocking SSL accept.

- Version 2.4.1 (01/07/2004)

- Changed _USCORE_ and _DOT_ naming conventions into _USCORE and _DOT to improve name mapping.
- Updated DOM parser (integrated into core gSOAP library).
- Improved WSDL parser and included several new features.
- Fixed WSDL schema import and WSDL literal output.

- Version 2.5 (01/28/2004)

- Changed default encoding to SOAP RPC literal, as mandated by WS-I Basic Profile 1.0a and best practices.
- Added soapcpp2 compiler option -e for backward compatibility to gSOAP 2.4.1 and earlier that use SOAP RPC encoding defaults (helpful when migrating gSOAP projects to 2.5).
- Added automatic compiler-side WS-I Basic Profile 1.0a compliance warnings (warns before deployment).
- Added fget() callback for HTTP GET responses.
- Added IPv6 support contributed by Wind River Systems.
- Added VxWorks support contributed by Wind River Systems.
- Improved SOAP Fault handling.
- Improved interop with Axis RPC encoded response messages.
- Fixed std::string xsi:type attribute value.
- Fixed gSOAP 2.4 problems with serialization of enumeration values outside enumeration range.
- Fixed gSOAP 2.4 Pocket PC build problem.
- Fixed wsdl2h SOAP Fault and Header output.

- Version 2.5.1 (02/12/2004)

- Improved WSDL output and WS-I BP1.0a compliance.
- Improved WSDL parser stability.
- Fixed problem parsing empty xsd:base64Binary elements.
- Fixed VxWorks and TRU64 portability issues.
- Fixed HTTP 400 error problem.
- Fixed soapcpp2 2.5 stability problem with one-way messages.

- Version 2.5.2 (02/23/2004)

- Fixed WSDL generation warnings.
- Fixed LONG64 problem for PalmOS.
- Fixed module build link problem and 'components' example.

- Version 2.6.0 (03/28/2004)

- Changed default style to doc/lit.
- Improved doc/lit WSDL handling.
- Improved soapcpp2 sample SOAP/XML message output.
- Added proxy support for wsdl2h.
- Fixed CONNECT method for proxy+SSL+gzip.

- Version 2.6.1 (06/07/2004)

- Added optional multibyte character support.
- Improved WSDL output.
- Fixed STL container multi-ref deserialization problem with missing data.
- Fixed doc/lit server code generation from doc/lit WSDL definitions.

- Version 2.6.2 (06/12/2004)

- Added Matlab(tm) code output (documentation is not availabel yet).
- Improved wsdl2h output for schema facets.
- Updated dom.cpp.
- Changed wsdl2h std::string* --> std::string generation (to avoid double pointers std::string**). To obtain old behavior, add entry "xsd:string = | std::string* | std::string*" to typemap.dat.
- Fixed wsdl2h handling of <xs:include>.
- Fixed wsdl2h handling of empty namespaces and absent targetNamespace schema attributes.
- Fixed MB char handling.

- Version 2.7.0a/b/c/d/e/f (09/10/2004, 2/1/2005)

- Added multipart/related support for SOAP with MIME attachments (SwA).
- Added API functions for DIME open and closed layout support.
- Added //gsoap schema elementForm/attributeForm directive.
- Added fclosesocket, fshutdownsocket, fpoll, fserveloop callbacks.
- Added soap.authrealm string attribute to set basic authentication realm.
- Added soap.prolog string attribute to output optional XML prolog with processing instructions and directives.
- Added soapcpp2 option -t.
- Added wsdl2h options -e and -i.
- Added Palm OS and Symbian instructions and examples.
- Added xml-rpc support and examples.
- New mod_gsoap directory with modules for Apache 1.x/2.x, IIS, and WinInet
- Improved XML validation with SOAP_XML_STRICT flag.
- Improved memory footprint (reduced code size and reduced serialization overhead).
- Improved runtime id-ref serialization and deserialization.
- Improved wsdl2h translation.
- Updated dom.cpp.
- Updated webserver.c.
- Fixed issues with namespace qualification in doc/lit messages.
- Fixed SOAP_HREF error.
- Fixed proxy+SSL+zlib+chunking.
- Fixed SSL select() polling in frecv().
- Fixed wsdl2h multidimensional SOAP arrays generate problem.

- Version 2.7.1 (03/31/2005)

- Added new style of C++ proxy/object generation (objects derived from soap struct), enabled with soapcpp2 option -i.
- Added new features to wsdl2h generation to enable user-defined class/struct extensions such as member data and functions which are declared in typemap.dat.
- Added MIME multipart/form-data parsing to support HTTP POST HTML form handling (example included in samples/webserver).
- Added built-in memory leak detection enabled with -DDEBUG.
- Added UDDI v2 API and examples.
- Added 'WS' directory with WS-* protocols, such as WS-Addressing. This part will mature as more WS-* protocols will be added over time.
- Added fseterror() callback.
- Improved wsdl2h code output.
- Enhanced Web server sample code, and httpget and logging plugins.
- Fixed base64/hexBinary XML attribute serialization.
- Fixed a missing min/maxOccurs check for validation.

- Version 2.7.2 (05/11/2005)

- Added SOAP-over-UDP IPv4/IPv6 support with examples.
- Added UDDI v2 API publish example.
- Improved wsdl2h parser accepting multiple WSDL/XSD files from the command line.
- Fixed wsdl2h schema import from included schema bug.
- Fixed SOAP 1.2 Fault Subcode handling.

- Version 2.7.3 (06/27/2005)

- Added MTOM attachment support.
- Added 'plugin' directory with example plug-ins.
- Added 'import' directory for commonly #import-ed files such as stlvector.h.
- Added HTTP digest authentication plug-in 'plugins/httpda.h'.
- Added new import feature to wsdl2h using ns=<uri> convention for typemap.dat files, which enables wsdl2h to parse a WSDL that imports known WSDLs/schemas such as XOP, XML MIME, and WS-Addressing without actually reading the imported WSDL/schemas.
- Added soapcpp2 options -C and -S to generate client- or server-only codes.
- Added multi-path support for soappcpp2 option -I.
- Added C and C++ examples to combine multiple clients and services into one executable, see the samples/components directory in the package.
- Improved soapcpp2 option -e to generate SOAP RPC encoding style client/server codes by default (instead of document/literal by default).
- Fixed wsdl2h circular import of schemas.
- Fixed attributeGroup handling in wsdl2h.
- Fixed soapcpp2 handling of 'invisible' tags, e.g. __any, that should only be populated after all else failed to match the delivered XML content.
- Fixed validation of numeric enum constants with SOAP_XML_STRICT validation.
- Fixed engine's spurious log file generation issue.

- Version 2.7.4 (07/24/2005)

- Added union serialization.
- Added '//gsoap ... type-documentation:' directive.
- Added '//gsoap ... method-mime-type:' directive.
- Added wsdl2h option -g for generating global element/attribute declarations for building modular .h files.
- Added wsdl2 option -y for generating typedef synonyms for structs and enums, with improved handling of typedefs by soapcpp2.
- Added wsdl2 option -u to disable union generation for xs:choice.
- Improved wsdl2h documentation generation.
- Improved wsdl2h and soapcpp2 MIME bindings.
- Improved dynamic memory allocation in engine with look-aside buffering.
- Fixed wsdl2h xs:complexContent/extension/attributeGroup translation.
- Fixed wsdl2h xs:choice with min/maxOccurs != 1 translation.
- Fixed wsdl2h soap:body parts attribute.

- Version 2.7.5 (08/01/2005)

- Added xs:redefine support to wsdl2h.
- Added HTML POST application/x-www-form-urlencoded plugin httpform.c (demo samples/webserver).
- Improved wsdl2h output.
- Fixed wsdl2h handling of duplicate values in single enum list.

- Version 2.7.6 revision a/b/c/d/e (08/19/2005-02/18/06)

- Added WS-Security authentication, tokens, and signatures with new 'wsse' plugin, see documentation in 'doc' directory and 'samples/wsse'.
- Added 'doc' directory for documentation and moved soapdoc2.html and soapdoc2.pdf.
- Added SOAP_XML_INDENT flag.
- Added soap_sender_fault_subcode() and soap_receiver_fault_subcode() for SOAP 1.2 subcodes.
- Added WITH_DOM compile flag to enable flushing serialized and deserialized data to DOM (as well as a stream).
- Added soapcpp2 option -L.
- Added soapcpp2 option -a.
- Added wsdl2h option -a (for backward compatibility).
- Added wsdl2h option -d.
- Added WITH_TCPFIN comile flag to enable optional shutdown with how=1 (TCPFIN) after final sends to force EOF on other side (used to be the default behavior).
- Added schema substitutionGroup support.
- Added soap_ssl_init().
- Improved DOM implementation and documentation.
- Improved AS400 portability.
- Improved schema choice support.
- Fixed wsdl2h multiple schema include issue.
- Fixed soaps2dateTime and soap_timegm functions when timegm is not available.
- Fixed exc-c14n formatting.
- Fixed SOAP 1.2 fault handling.
- Fixed missing soap_flag___item2 issue.
- Fixed partial MIME boundary parsing issue.
- Fixed base64 parsing with WITH_FAST.
- Fixed MIME encoding of \r\r sequence.
- Fixed QName normalization issue.
- Fixed relative path schema import.
- Fixed MTOM cid matching with URL encoded IDs.
- Fixed wide-character (wchar_t*) XML attribute handling.
- Fixed std::vector element id-ref ordering in deserializer.

- Version 2.7.7 (04/07/2006)

- Added streaming MTOM support (see also example in samples/mtom-stream).
- Added long double serialization support with custom serializer (custom/long_double.h).
- Added automatic detection of application's soap_malloc() data overruns in DEBUG mode.
- Improved time_t and struct tm (custom/struct_tm.h) serialization.
- Fixed issue with a wrongly generated namespace map entry.
- Fixed PalmOS socket connection issues.
- Fixed XML attributes with bitmask enumeration (enum*) values.

- Version 2.7.8 revisions a/b/c (06/05/2006-06/24/2006))

- Added X509 extension checks.
- Added advanced MTOM streaming features.
- Added WS-Addressing plugin and demo.
- Moved soapcpp2 and wsdl2h to bin directory.
- Improved SOAP1.2 MTOM interop.
- Changed soap_send_empty_response function signature (additional status argument) for HTTP optional response binding.
- Changed fmimewriteopen() callback signature.
- Fixed wsdl2h top-level element and complexType name clash issue.
- Fixed HTTP chunking with empty response message body.
- Fixed WSSE digest authentication.
- Fixed WSDL response element output.
- Fixed SOAP 1.2 <RPC:result> handling with SOAP_XML_STRICT flag.
- Fixed WSSE signed response messages.
- Fixed Win32 max open connection exceeded checking.
- Fixed xsi:type matching for "__name" fields, which required a signature change of soap_element_begin_in() with an additional 'type' parameter (affecting custom deserializers, see custom dir).

- Version 2.7.9 revisions a/b/c/d/e/f/g/h/i/j/k/l (10/24/2006-09/26/2007)

- Added wsdl2h option -j to omit the generation of SOAP Header and Faults for customization of these.
- Added wsdl2h option -q to generate C++ namespace qualified header files.
- Added SOAP_SSLv3, SOAP_TLSv1, SOAP_SSL_SKIP_HOST_CHECK flags.
- Added file input and output specifications (with < and >) to wsdl2h's typemap.dat to specify input and output for wsdl2h.
- Added WS-Addressing 2005/03 support.
- Added function soap_free() = soap_done() + free() and renamed previous soap_free() to soap_temp_free().
- Added wsdl2h option -_ to translate _USCORE.
- Added xsd:anyAttribute (using DOM parser) with wsdl2h option -d.
- Added multi-WSDL types section schema component merging.
- Added TCP keep-alive settings.
- Added QName list normalization.
- Changed soapcpp2 default rule for generating attribute form qualified to unqualified.
- Improved wsdl2h SOAP Fault coding.
- Improved performance and stability.
- Improved portability.
- Improved wsdl2h empty namespace handling ("" namespace).
- Improved wsdl2h and schema conversion to C and C++.
- Improved SSL timeouts and error handling.
- Improved soapcpp2 option -i (generate proxy and service classes).
- Improved class instance initialization.
- Improved use of IPv6.
- Improved proxy and server code output for soapcpp2 option -i.
- Improved soapcpp2 code output with additional exception checks.
- Fixed MIME/MTOM start id handling (SOAP message no longer required to be first attachment).
- Fixed WS-Security wsse plugin canonicalization format issue.
- Fixed ZIP content remainder parsing (CRC check).
- Fixed WSA API handling of messages with MIME/DIME attachments.
- Fixed wsdl2h <include> relative path includes.
- Fixed _XML literal string parsing of root attributes.

- Version 2.7.10 (01/27/2008)

- Combined pre-built win32, Linux i386, and Mac universal binaries into a single software distribution package to streamline the distribution.
- Added new Web service examples and removed XMethods dependence.
- Added soapcpp2 option -q<name> for automatic C++ namespace qualification.
- Added HTTP PUT, DELETE, HEAD callback support.
- Added ability to derive classes from soap struct (in gSOAP header files).
- Updated certificates and fixed cacerts.c.
- Improved soapcpp2 option -i proxy/server object generation.
- Improved socket timeout handling.
- Improved HTTP chunking handling and efficiency.
- Improved web server implementation.
- Improved soapcpp2 and wsdl2h warning and error reporting.
- Fixed dom parser handling of default xml namespace bindings.
- Fixed wsdl2h default ("") namespace handling.

- Version 2.7.11 (07/26/2008)

- Added new wsseapi signature verification API functions.
- Added mutability property of SOAP_ENV__Header and SOAP_ENV__Fault struct to allow consistent redefinitions and on-the-fly member additions.
- Added wsdl2h -r option parameters.
- Added MINGW portability.
- Added configure option --disable-openssl to build wsdl2h and libraries without OpenSSL.
- Added WITH_C_LOCALE compilation flag to enable the use of c_locale and local-specific numeric conversion routines.
- Fixed xml:lang in SOAP 1.2 SOAP-ENV:Text.
- Fixed XML literal strings with maxOccurs="unbounded"
- Fixed SSL connection engine issue.
- Fixed RPC literal part name handling issue.
- Fixed in update: SSL alloc/free issue and s2dateTime.

- Version 2.7.12 (10/01/2008)

- Added multi-endpoint connect capability. Endpoint string can be a space-separated list of endpoint URLs, where each URL is tried in turn.
- Added SOAP_SSL_NO_DEFAULT_CA_PATH option.
- Fixed SSL connect issue when the SSL handshake or network connection fails.
- Fixed xsi:nil handling for strings (NULL vs. "") in case of empty elements.
- Fixed DOM xmlns="" namespace issue in XML output.
- Fixed IP_MULTICAST_TTL failure to compile.
- Fixed non-critical WSSE API soap_wsse_verify_nested code.

- Version 2.7.13 (03/21/2009)

- Improved wsdl2h code output.
- Updated gsoapWinInet.
- Updated DOM xmlns namespace binding handling.
- Fixed OpenSSL memory leak.

- Version 2.7.14 (09/07/2009)

- Added support for poll() to replace select() to prevent FD_EXCEEDED.
- Fixed enum local simpleType restriction attribute initialization.
- Fixed utf8 string parsing issue when first char in CDATA could cause problems.
- Fixed UDP IPv6 multicast-unicast exchange.
- Fixed gzip end-of-stream check.
- Fixed wsdl2h portType operation-input/output matching to ensure operations can be safely overloaded.

- Version 2.7.15 (11/07/2009)

- Added soap_read_X() and soap_write_X() macros to simplify object reading and writing.
- Fixed soap_new_X() functions compilation problem.
- Fixed SSL session in context copy.
- Fixed win32 select() in tcp_select().
- Fixed wstrings in unions.
- Fixed preservation of CDATA sections in literal XML strings.

- Version 2.7.16 (04/05/2010)

- Added soapcpp2 option -T to generate auto-test echo server code with an example in samples/autotest based on 294 patterns for data binding W3C workgroup.
- Added soapcpp2 option -b to serialize byte arrays char[] as fixed-size strings (array of xsd:byte otherwise).
- Added xsd:duration serializer: import custom/duration.h.
- Added gsoap header syntax '$' type qualifier to indicate special struct/class members (array length, union discriminators).
- Added "colon notation" to attach XML prefixes to C/C++ names without changing the names, an alternative to the ns__ prefix notation.
- Added wsdl2h options -z# for backward compatibility flags (-z1, -z2).
- Added SOAP_XML_IGNORENS to optionally ignore XML namespaces.
- Added WS-ReliableMessaging plugin.
- Added custom xsd:duration serializer.
- Added WSSE plugin soap_wsse_set_wsu_id() to simplify signing of elements (sets the wsu:Id of a given element tag name).
- Improved handling of struct/class member name clashes resulting from XML schemas definitions.
- Improved SOAP RPC ecoding response element tag acceptance.
- Improved VxWorks compatibility.
- Fixed FastCGI SOAP/XML processing with MIME attachments.
- Fixed 'typedef std::string XML', for literal XML serialization problem.
- Fixed a rare incorrect well-formedness error when xmlns default namespaces are absent.
- Fixed a zlib compression error when obsolete crc check is used.
- Fixed WS-Addressing HTTPS message relay (OpenSSL crash).

- Version 2.7.17 (05/10/2010)

- Added WS-Policy 1.2 and 1.5, WS-SecurityPolicy 1.2 support for wsdl2h.
- Improved WS-ReliableMessaging interop and verified MT-safety.
- Improved WS-Security WSSE plugin documentation.
- Fixed soapcpp2 line number error reporting.
- Fixed WSSE plugin soap_wsse_set_wsu_id().
- Fixed wsdl2h cycle problem with recursive xs:include and xs:import.
- Fixed enum translation of enum symbols with colons.
- Fixed std::wstring used as XML attribute value UTF8 encoding (internal stdsoap2 API changed).

- Version 2.8.0 (09/20/2010)

- Added wsdl2h option -W: suppress warnings.
- Added wsdl2h option -i: for advanced uses only to skip schema imports.
- Added automatic xsi:nil output for NULL pointer members when minOccurs>0 (member has '1' occurence annotation).
- Improved wstring and wchar_t* handling when wchar_t is < 4 bytes.
- Improved use of custom serializers in builds.
- Fixed wsdl2h type mapping of nested xs:sequence and xs:choice.
- Fixed soapcpp2 handling of extension base qualified elements and derived type unqualified elements.
- Fixed WSRM message resend buffer leak.
- Licensing change for reasons of consistency and transparency: the soapcpp2 tool (2.8.0 and up) is licensed under the same conditions as the wsdl2h tool, which means that soapcpp2 is no longer covered by the gSOAP public license.

- Version 2.8.1 (01/14/2011)

- Added WS-Security WSSE plugin-integrated streaming XML encryption.
- Added WS-Security WSSE plugin soap_wsse_sign_only().
- Added soapcpp2 -f flag to split large output source code files into parts.
- Fixed C++ mapping of xs:sequence maxOccurs>1.

- Version 2.8.2 (04/17/2011)

- Added soapcpp2 -j option to generate C++ proxies and services in alternative format to the -i option.
- Fixed wsdl2h issue with optional elements with default value.
- Fixed cyclic WSDL import dependences in wsdl2h.
- Fixed WSRM server-side fault state handing.
- Fixed leading unicode character parsing and conversion issue in literal XML strings.

- Version 2.8.3 (06/24/2011)

- Added soapcpp2 -y option to generate C/C++ type access information to the generted sample XML messages, allowing for the verification of C/C++ data access to the actual XML content.
- Added JSON serialization support in place of XML-RPC serialization, see the XML-RPC content in the samples folder.
- Improved DOM processing (an optional feature).
- Fixed bugs, compilation and porting issues.

- Version 2.8.4 (10/24/2011)

- Added NTLM support (enabled with -DWITH_NTLM, requires libntlm).
- Added WS-Discovery 1.1 support (see doc/wsdd and plugin/wsddapi.h and wsddapi.c).
- Added //gsoap typed directive to control xsi:type attribuation per namespace.
- Added SOAP_XML_NOTYPE flag to disable xsi:type attributes.
- Improved WS-Security encryption (AES, soap_wsse_add_EncryptedKey_encrypt_only).
- Improved HTTP proxy authentication support (digest and NTLM).
- Fixed bugs and portability issues.

- Version 2.8.5 (11/19/2011)

- Fixed build issues with WS-Discovery.
- Fixed HTTP basic auth crash.
- Fixed WITH_COMPAT and WITH_C_LOCALE.
- Fixed wsdl2h output for XSD abstract element extraneous ';'.

- Version 2.8.6 (12/14/2011)

- Improved WS-Security compatibility.
- Fixed multi and cyclic WSDL import.
- Fixed tags of qualified referenced elements.
- Fixed C builds for improved portability.

- Version 2.8.7 (02/07/2012)

- Added new REST examples.
- Added libary versioning check to ensure project builds are consistent.
- Improved interoperability of wsdl2h output wrt. to element qualification.
- Renamed TANDEM to TANDEM_NONSTOP to prevent naming conflicts.
- Fixed WS-Discovery URL.
- Fixed soapcpp2 option -i and -j server chaining.