The changelog tracks changes to the public API.
Internal refactorings and bug fixes are not reported here.

2017-07-03 jpfr

    * Implement asynchronous service calls from the client

      All OPC UA services are asynchronous in nature. So several service
      calls can be made without waiting for a response first. Responess
      may come in a different ordering. The client takes a method pointer
      and a data pointer to perform an asynchronous callback on the request
      response.

      Synchronous service calls are still supported in the client. Asynchronous
      responses are processed in the background until the synchronous response
      (the client is waiting for) returns the control flow back to the user.

2017-06-26 janitza-thbe

    * Enable IPv6 in the networklayer plugin

      The server networklayer listens on several sockets for available
      networks and IP versions. IPv4 connections are still supported.

      The OPC Foundation ANSI C Stack before 2016 does not fully support IPv6.
      On Windows, the 'localhost' target is resolved to IPv6 by default. Old
      applications (e.g. the Conformance Testing Tools) need to connect to
      127.0.0.1 instead of 'localhost' to force IPv4.

2017-06-16 jpfr <julius.pfrommer at web.de>

    * Require the AccessLevel bit UA_ACCESSLEVELMASK_READ for reading

      Set the bit by default when adding nodes for a smooth transition to
      the new API. This will change at a later point with an additional
      node settings argument for the AddNodes methods.

2017-05-03 pro <profanter at fortiss.org>

    * Array dimensions are UInt32 also for the highlevel client read service

2017-04-16 jpfr <julius.pfrommer at web.de>

    * Refactor UA_parseEndpointUrl to work with UA_String

      The output hostname and path now point into the original
      endpointUrl with an appropriate length.

2017-04-14 jpfr <julius.pfrommer at web.de>

    * Auto-instantiate only child nodes marked as mandatory (fixes #1004)