Releases

• .Net 2.0 and Mono 1.1.16 compatible
• console host application
• complete asynchronous message processing pipeline
• http and direct in-memory message transports
• JSON and HTML document encodings for XML
• automatic service state serialization

• Host
• Storage
• Directory
• Events
• Statistics
• Mount
• FileSystemMount
• Redirect
• Timer

• new XML document encodings: PHP, Versit, xSpan
• new prolog/epilog handling for features
• support for cookies
• new dream-request processing options
• new async plug processing

• HostService (new features)
• Log4Net
• Events (new features)
• Directory (new features)

• PHP integration

• much improved performance
• many improvements to XDoc, Plug, and XUri
• asynchronous programming with iterators
• managed global state for asynchronous free-threaded continuations
• improved Dream attributes
• services identified by global URIs (SIDs)
• support for path parameters based on URI templates (e.g. /path/{param}/)
• support for segment parameters (e.g. /segment;param/)
• unified access to path & query parameters
• DreamKernel (formerly DreamEnvironment) now fully decoupled from HTTPListener transport (allows embedding int ASP.Net, etc.)
• service URIs can now be a mixture of parameters and constant symbols (e.g. /name/{param}/action)

• mindtouch.apitest makes it easy to interact with Dream services
• mindtouch.blueprints generates publishable blueprint XML documents from compiled services

• many improvement to XDoc
• more asynchronous core methods
• support for co-routines
• improved logging support for DreamHost
• support for multi-home host names (i.e. host name is relative to incoming request)
• added xml diff engine (XDocDiff)
• added xml structural check engine (XDocCop)
• hiding of many Dream infrastructure calls in debugger
• stability improvements

• AtomService
• PrivateStorageService

• mindtouch.blueprint published DreamService documentation to any Deki Wiki site

• performance tuning
• memory footprint tuning
• simpler instantiation of the host service
• XDoc diffing and 3-way merge
• catch handlers for asynchronous operations
• eliminated all uses of NameValueCollection (it's slow, a memory hog, and buggy)
• much improved support for instantiating objects from a catalog
• support for independent culture per request for multi-lingual services

• (bug 3504) audited all Dictionary<string, V> declaration to ensure they are culture invariant
• (bug 3493) added "server-path" config parameter that tells the host what the public URI path is
• (bug 3493) append 'server-path' to 'server-name' during initialization
• (bug 3495) fixed 'UnescapeString()' escaping issue
• (bug 3460) added 'AsInnerText' to retrieve all nested text in a node
• (bug 3449) 'RemoveAll()' and 'Remove()' now also works on attribute nodes
• (bug 3459) don't throw exceptions when the same file is PUT twice
• (bug 2426) features links in /@about are wrong
• (bug 3521) added 'AtPath()' to run xpath expression with custom namespaces
• (bug 3520) always define default namespace prefix (_)
• (bug 3522) refactored computation for public uri

• support for ICredentials with Plug
• support for IPv6 based network addresses
• support for HTTP Range headers
• enhanced methods for manipulating XML documents with XDoc
• improved performance for deployments with large number of aliases
• removed status filters on service features
• and other bug fixes

Runtime:

• support for XML digital signatures with XDoc
• optimized this[string] xpath selector on XDoc for simple paths
• response caching in DreamService
• optimized text analysis in XDocDiffUtil
• (bug 4064) fixed comparison bug on XUri
• (bug 4136) preserve whitespace when parsing XML documents with XDocFactory
• allow wildcard element (i.e. "*") in definitions for XDocCop

Runtime:

• fixed bug with HttpHandler always returning 200 under IIS
• recognize proper application root under IIS
• added TEXT_UTF8 to MimeType
• optimized Diff method in ArrayUtil

Runtime:

• split XUri class into two files so that the base functionality can be used in other projects without using Dream
• GET/HEAD/OPTIONS requests no longer send in a content-type unless explicitly stated
• fixed XUri comparison when query parameters are present
• escape '?' in XUri query parmaters since IIS and Apache handle it differently
• dispose of iterator in coroutines when done
• allow overriding GET verb if override is HEAD or OPTIONS
• made 'Set-Cookie' header RFC 2965 compliant

License:

• all source code is now licensed under Apache License 2.0 (October 21, 2008)

Runtime:

• added WebDAV status codes
• services may check for optional activation key on startup
• services can now provide custom OPTIONS handler
• DreamMessage.AsDocument() now throws an exception if content is non-empty and cannot be parsed into an XML document
• XDoc now always preserves whitespace
• XDocDiff no longer splits words separated by underscore or digits separated by dot/comma
• Accept-Language header can now always instantiate a specific-culture, even if a neutral culture is specified (e.g. "de" vs "de-ch")
• fixed issue in XDocCop that was adding unnecessary &nbsp; characters during validation
• fixed issue in TaskTimer that could cause the timer queue to stall and not fire anymore

Runtime:

• MimeType: added support for recognizing the proper mime-type for .pdf files
• XUri: improved error exception description when ChangePrefix() fails
• XUriMap: applied fix from trunk
• XDoc: don't throw exceptions for RemoveNodes() or RemoveAttr() when selection is empty

• Async
  • Added ForkThread to run forked code on dedicated background thread instead of threadpool thread
• BlockingQueue
  • created BlockingQueue<T> for thread-safe producer/consumer scenarios
• Cookies
  • Refactored Dream cookie logic to use DreamCookie rather than native Cookie class
  • DreamCookie automatically handles local:// <-> http:// transition
• CookieJar
  • will consider both public and local variants of a URL when fetching cookies
• CultureUtil
  • Methods for retrieving non-neutral culture
• DreamContext
  • added User property to retrieve and set IPrincipal
  • ServerUri uses Ip instead of Hostname for default derivation
  • PublicUri can be overriden with different value on a per request basis
  • Skipping IPv6 addresses in host address inspection when trying to derive PublicUri
• DreamHost
  • Fixed incorrect error message when script fails to load
  • Posting against "services" to create a services now returns a result document with the internal and private keys
• DreamHostService
  • DreamHostService: set IPrincipal for authenticated user
  • Enumerates all loaded Assemblies, their version, build date and if applicable svn info at /host/version
• DreamMessage
  • added Ok constructor using array of KeyValuePair<string, string>, which creates a form-encoded message (replaces similar constructor which was based on XUri)
  • FromFile() no longer catches exceptions (e.g. FileNotFound) and let's them pass through instead
• DreamService
  • Now contains a PubSub plug pointing at the default (or configured) PubSubService
  • Added DreamContext as parameter to DetermineAccess
• DreamServiceState
  • deprecated
• Email Service
  • Can send smtp email messages
  • Accepts multiple smtp server configurations indexed by caller determined key
• HttpHandler
  • fetch IPrincipal for current request
• HttpPlugFactory
  • use ToUri() on XUri to get a properly escape Uri
• HttpTransport
  • fetch IPrincipal for current request

• Plug
  • Allows overring the global CookieJar with a custom CookieJar
  • use new DreamMessage constructor in PostQuery() to create form-encoded messages
• PlugHandler
  • Now also receives the un-normalized Uri
• Plug mocking tools
  • MockPlug
    • Create a callback to incerpect Plug calls for testing
  • AutoMockPlug
    • Record/Playback/Verify style mocking tool for Plug calls
• Publish & Subscribe Service
  • Event publish and subscribe service
  • Can chain multiple services together with subscription progragation both up and down stream
• ResourcePlug
  • set caching header and respond with Not-Modified (304) when the same resource is requested again by a conditional GET

• Storage Service / Private Storage Service
  • Consolidated public and private storage into a single service and provide a shared private storage services as the default service to all services
• StringUtil
  • 'ByteFromHexString()' now works for strings of arbitrary length
  • added RepeatPattern() helper method
  • 'ReplaceWithDelimiters()' now works even when the start and stop delimiter are the same
• XDoc
  • added ReverseList() method to reverse selection
• XDocCop
  • don't automatically replace CDATA section with their text equivalents
  • added 'Verify()' function to check if a document would be affected if 'Enforce()' were invoked
• XDocDiff
  • compute optionally attribute changes as well
  • fixed bug in how attribute changes are tracked
  • Highlight() now de-interleaves text changes when generating a composite diff document
  • highlight changes in before and after documents as well
• XException
  • added XML deserialization for exceptions
• Xuri
  • improved error reporting for 'ChangePrefix()' method
  • when converting to Uri, escape trailing '.' characters in segments as Uri will otherwise remove them
• XUriChildMap
  • As opposed to XUriMap which returns the best matching entry for a XUri, XUriChildMap will returns a collection of all XUris matching an XUri.
  • Accepts wildcard as map entries containing hostport and path trailing wildcards
  • Can be made scheme insensitive

Runtime:

• Plug
  • Added ext-http:// and ext-https:// XUri schemes to force connections for locally available endpoints to go across the wire
  • Added InvokeAsyncEx()
  • DreamContext & XriPlug changed to use InvokeAsyncEx()
• MockPlug
  • Updated MockPlug to always win for any URL it might handle
  • Added AutoMockPlug class for easily creating Arrange/Act/Assert style testing of DreamServices 
• Dream
  • Created IServiceActivator to separate service instantiation by Dream for possible substitution interception by an IoC Container
  • Fixed request uri handling for HttpHandler and HttpTransport
  • Changed @api/host/version to include build date and svn info
• Tasking
  • Deprecated TaskBehavior to be replaced by TaskEnv
  • Result
    • Returning/throwing a result is now done in a lock-free fashion
    • Added support for cancellation
    • Inlined RendezVousEvent into ResultBase
  • Coroutine
    • Inlined coroutine iteration loop to minimize number of nested delegate calls
    • Show name of function with missing result when possible
  • Introduced Task helpers for wrapping a delegate in a TaskEnv
  • Async
    • Async.Fork logic uses TaskEnv wrapper to capture current environment
    • ExecuteProcess: added try-catch around closing standard input stream
    • Added .From() for adapting existing asynchronous callbacks to Dream Async Method Pattern
    • Updated Read/Write to use the new From() methods
    • Added ForkThread to fork work onto a dedicated, non-threadpool thread
  • Added GlobalClock: Central clock that pings at regular intervals all instances that require regular maintenance
  • TaskTime: Using central GlobalClock instead of dedicated thread for regular scheduled maintenance work
• Data
  • Added SLOW Sql logging to DataCommand
  • Revised how DbProviderFactories are discovered and accessed
  • Obsoleted DataCatalog constructor that was mysql specific
• Misc
  • StringUtil
    • Added support hexadecimcal literal html entities to DecodeHtmlEntities()
    • Replaced InvariantCulture with Ordinal for string comparisons
  • Replaced all doc.opengarden.org with developer.mindtouch.com
  • Converted all solutions & projects to VS2k8
  • Various clean-up of improper disposal of IDisposables
  • Fixed Timezone bug in Dreamcookie (would render as UTC, without making sure datetime was actually utc)
  • SysUtil
    • Added IsMono() method to detect the mono runtime
    • Added Rethrow() method to rethrow an exception without destroying it's existing stack-trace (if possible)
    • Added CAS<T>() method for Lockfree operations
  • Threading
  • Added a number of lock-free collections for more efficient concurrent access
  • First version of new Threadpool
    • Currently has to be manually activated to displace standard threadpool
    • Provides distinct elastic workqueues
    • Provides work stealing mechanisms for workload balancing
    • Uses GloblalClock for thread maintenance work
    • DispatchThread: thread with local work-item queue that can be stolen from

Services

• PubSubService
  • PubSub Dispatcher: blocking on queued item execution to prevent excessive async task scheduling
  • refactored PubSub Dispatcher to no longer use throttling WorkQueue instead of IBlockingQueue
  • refactored PubSub.Dispatcher to use coroutines instead of methods to stay clear or ElasticThreadpool issue
  • refactored PubSubService /subscribers/{id} authorization logic to use an access-key token in query args or cookies
  • refactored separate Publish and Subscribe Uri's for DreamServices to use just PubSub, since pub and sub are irrevocably coupled for upstream and downstream chaining
• EmailService
  • added ability for email service to have different configurations
  • added ability to set headers for emails

Runtime

• Dream
  • DreamFeatureStage, XUri: removed lock around XmlNameTable (it's threadsafe now)
  • DreamHostService: show more information about XmlNameTable; added feature to list all strings in the XmlNameTable
  • DreamHostService: show stats for LockFreeXmlNameTable in GET:/status
  • DreamHostService, status.xslt: show app.config settings and avg. lookup overhead for global xml nametable
  • status.xslt: added conditional display of global LockFreeXmlNameTable statistics
• Tasking
  • Result: changed 'AcceptCancel()' to 'Canceled()'
• XDoc
  • XDoc: use XmlNameeTable from SysUtil
• Misc
  • LockFreeXmlNameTable:
    • compute distribution differently by counting the number of keys for each level (instead of the buckets and their depths)
    • compute avg. lookup overhead
    • improved returned statistics about the XmlNameTable instance
  • MimeType: default charset for text/* is ASCII (not ISO-8859-1)
  • SysUtil: XmlNameTable capacity can be configured using "xmlnametable-capacity" in App.config
  • StringUtil: added custom hashcode methods