Agenda

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Message Queuing in Windows 2000
(MSMQ)Microsoft Hong Kong Ltd.
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Agenda

• MSMQ Overview
• Key Features and Benefits
• MSMQ Programming
• Related Technologies
• Beyond Windows 2000...

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Introducing Message Queuing

• Implementation of Asynchronous / Connection-less
  Communication
  
• Requests are Sent, and Responses are Received, as
  Messages
  
• Message-based Asynchronous Communication has Many
  Benefits
  
• Delivery guarantees
• Routing
• Connection-less
• Security

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Agenda

• MSMQ Overview
• Key Features and Benefits
• MSMQ Programming
• Related Technologies
• Beyond Windows 2000...

5
MSMQ Overview

• Message Queuing in Windows 2000 (MSMQ)
• MSMQ Scenarios
• Application Integration
• Internet/Intranet
• MSMQ Product Architecture
• MSMQ Configurations

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Message Queuing in Windows 2000 (MSMQ)

• Asynchronous Communication Model
• Detects/Avoids Network Problems
• Transactional Send/Receive
• One-way and/or Request/Response

Receive . Process . . . Respond
Send Request
Request Queue
Optional
Confirm or Reconcile
Response Queue
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MSMQ Distributed Draw Sample Application Overview

• Scenario Two applications passing keystrokes
  and mouse coordinates to each other. When a
  receiving application is not running, the
  keystrokes and mouse movements are queued until
  the application starts up again.

Demo
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Application IntegrationMSMQ Scenarios
IIS/ASP
Translation
Send Wait Receive
MSMQ
MQSeries
Bridging
Windows NT
Non-Windows NT

• Request/Response Communication
• Heterogeneous Application Architectures

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Internet/IntranetMSMQ Scenarios

• Use MSMQ for Asynchronous Aspects

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MSMQ Product Architecture
Machine 1

• Messages are Kept in Queues

MSMQ

• Queues are Managed by Queue Managers

• Applications Access MSMQ via a Simple Client API

• MSMQ Enables Program-to-Program Messaging Queuing

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MSMQ Product Architecture
Machine 1
MSMQ

• MSMQ Also Works Transparently in a Multi-Machine
  Environment

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MSMQ Configurations

• MSMQ Server
• Windows NT 4.0 / Windows 2000 Server
• Optional routing functionality
• MSMQ Dependent Client
• Windows NT 4.0 / Windows 2000 Server
• Windows NT 4.0 Workstation /Windows 2000
  Professional
  
• Windows 95/98
• MSMQ Independent Client
• Windows NT 4.0 Workstation / Windows 2000
  Professional
  
• Windows 95/98

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MSMQ Server

• Store Messages

MSMQ Server

• Route Messages

• Support Local Applications

Information Server - AD

• Support Dependent Client Access

• Site Controller (optional)
• Host the MSMQ 1.0 MQIS

Windows NT Server
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MSMQ Dependent Client

• Send and Receive Messages
• No Local Message Storage

• Rely on an MSMQ Server Machine

• Works Best in LAN Environments
• Easy to Administer
• DLLs COM APIs

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MSMQ Independent Client

• Send and Receive Messages

MSMQ Workstation

• Can Store Messages

• Can Operate if the Network is Lost
• Cannot Support Dependent Clients
• Cannot Act as an MSMQ Router
• Required for Mobile

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Agenda

• MSMQ Overview
• Key Features and Benefits
• MSMQ Programming
• Related Technologies
• Beyond Windows 2000...

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Key Features and Benefits

• Directory Service
• Administration
• Workgroup Support
• Security and Audit
• Performance
• Message Control
• Interoperability

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Directory Service

• MSMQ 1.0 Special-purpose SQL Server Database,
  Single-master, Replicated by MSMQ
  
• MSMQ 2.0 and Beyond No More SQL Server - All
  MSMQ DS Information Stored in the Windows 2000
  ADS
  
• No need for customers to acquire SQL license(s)
• Simplifies deployment/management - only ADS is
  required

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Directory Service MSMQ 1.0 DS MQIS

• SQL-Based, Replicated Database
• Supported by MSMQ 1.0 Site Controller
  Installations
  
• One Primary Enterprise Controller (PEC)
• One Primary Site Controller (PSC) for each
  physical site
  
• Backup Site Controllers (BSCs) as desired (load
  balancing and failover)
  
• MQIS Must Be Installed Before Deploying MSMQ 1.0
  Clients or Routing Servers

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Directory Service MSMQ 2.0 DS Active Directory

• No More SQL Server Requirement
• Simply Integrates with the Windows 2000 Active
  Directory
  
• MSMQ 2.0 Allows Installing MSMQ Machines with No
  Windows 2000 Domain/ADS Present
  
• Workgroup MSMQ
• For example, stand-alone Windows 98 machine

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AdministrationActive Directory Integration

• Manage MSMQ Objects
• Administration Model
• Single point of control
• Supports remote management
• Windows NT PerfMon counters
• Windows NT event log
• No Static Routing Tables on Individual Machines
• View-able via Computer Management

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Directory Service Administration

• Scenario Access the Active Directory to see
  the queues created by the Distributed Draw
  application. Then look at messages, properties,
  and administration features.

Demo
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Local AdministrationMSMQ 2.0

• Works Offline (no ADS connectivity)
• Only Available Tool for Workgroup
• Shows
• Internal outgoing queues
• Local private queues
• Local public queues
• All queues if ADS available
• Otherwise, only those with messages

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Local AdministrationMSMQ 2.0

• MMC Snap-in Extension to Computer Management
• Allows
• Viewing messages
• Purging entire queue
• Stop/resume transmission out of specified
  outgoing queue
  
• Stop/resume transmission for entire machine

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Workgroup SupportMSMQ 2.0

• Allows MSMQ Install without Windows 2000 Domain
• No Active Directory connection
• Local Administration Only

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Workgroup Support MSMQ 2.0

• No PUBLIC queues, only PRIVATE, using DIRECT
  Format Name
  
• No Directory Service implies
• No MSMQ routing
• No security
• Explicit encryption
• No authentication
• Only Local Admin tool available

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Performance MSMQ 2.0

• Huge Performance Improvements
• Transactional delivery, especially
  single-thread
  
• Recoverable receive multiple threads
  optimization
  
• Examples
• Send, single-thread, DTC 79 TPS (vs 4 !)
• Receive, 5 threads, recoverable, standard SCSI
  556 msgs/sec (vs 109 msgs/sec)

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Message Control

• Acknowledgments
• Negative, positive or both
• Sent to specified Admin queue
• Priorities
• Queue -32k - 32k
• Message 0 7
• Journaling
• Outgoing messages in machine journal
• Dequeued messages in queue journal

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Security and Audit

• Windows NT ACL Support
• Integration with Windows NT auditing
• Public Key-Based Authentication
• Encryption
• Combination of symmetric key and public key
• Journal Queues at Source and Target
• Dead-Letter Queues

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Interoperability

• Microsoft MSMQ-MQSeries Bridge
• Interface to any MQSeries 5.x platform
• NT 4.0 SNA Server 4.0 SP2 (requires Windows NT
  4.0 Server Enterprise Edition)
  
• Windows 2000 Babylon
• Level 8 Systems, Inc. MSMQ Clients
• MSMQ API on a large number of platforms
• Today Dependent Client implementations
• Future Independent Client implementations

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MSMQ-MQSeries Bridge

• Interoperability with IBMs MQSeries
• Open MSMQ Connector Architecture

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Level 8 MSMQ Clients
Information Server
Client Proxy Server
Routing Server
Queue Manager
A
B
C
Sys
Sys
Windows 2000 Server

• Today Like MSMQ Dependent Clients
• Future With Queuing

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Agenda

• MSMQ Overview
• Key Features and Benefits
• MSMQ Programming
• Related Technologies
• Beyond Windows 2000...

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MSMQ Programming

• MSMQ Application Model
• MSMQ Interfaces
• C/C
• COM
• Delivery Options
• Component Model
• Queue/Message Syntax

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MSMQ Application Model

• Sender
• Opens a queue by name or lookup
• Creates message object
• Sets attributes such as body, timeout, delivery
  mode, response queue name, etc.
  
• Invokes send method on message object passing
  destination queue as a parameter
  
• Receiver
• Opens a queue by name or lookup
• Removes messages from the queue via blocking or
  non-blocking receive
  
• Must send any required response messages

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MSMQ C/C InterfaceMSMQ Interfaces

• Primary APIs
• Open, Close queue
• Send, Receive message
• Additional functions
• Create, Delete queue
• Locate queue(s)
• Set/Get queue properties
• Set/Get queue security
• Miscellaneous

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MSMQ COM InterfacesMSMQ Interfaces

• MSMQ COM Components Integrated with VB, VC, VBA
  Hosts, Scripting - VBScript, Many Others
  
• Supports Windows Events
• MSMQ Can Send Persistent COM Components as
  Message Body
  
• Rowsets
• Spreadsheets documents
• Any COM object that supports IPersist

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Delivery Options

• Express
• Fast memory-based reliable store and forward
• Tolerates network loss
• Recoverable
• Disk-based guaranteed store and forward
• Tolerates machine reboot
• Transactional
• Exactly-once, in-order delivery
• Works with Microsoft Transaction Server
• XA-compliant resource manager

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Component Model

• MSMQQuery
• queue search
• MSMQQueueInfos
• queue collection
• MSMQQueueInfo
• queue object
• MSMQQueue
• open queue instance

• MSMQEvent
• asynch notification
• MSMQMessage
• message object
• MSMQApplication
• machine ID

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Component Model

• Transaction Support
• MSMQTransactionDispenser
• Creates MSMQ internal transaction
• MSMQCoordinatedTransactionDispenser
• Creates MS DTC transaction
• MSMQTransaction transaction object

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Queue/Message Syntax

• MSMQ Defined in Terms of Queue and Message
  Objects
  
• Queue object types
• Public defined in directory service
• Private defined locally on computer
• Format Name uniquely identifies queue
• Messages object types
• User-defined body
• Persistent objects can be sent
• Message peek and removal supported

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Queue Syntax Queue Management

• Methods of MSMQQueueInfo
• Create queue
• .Create
• Delete queue
• .Delete
• Open queue
• .Open
• Close queue
• .Close

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Queue Syntax Queue Lookup

• Only for Public Queues
• Can Select Subset Based on Queue Properties with
  Comparison Operators

Set qinfos queryFriend.LookupQueue( _
Label(FriendName), _
ServiceTypeGuidguidDraw)
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MSMQ ProgrammingLookup and Open the Queue

• Scenario Using the Distributed Draw
  application, show the code for queue lookup and
  queue creation.

Demo
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Message Syntax Send Message

• Sending a String Message
• If qFriend.IsOpen Then
• msgOut.Priority 4 'Set the
  priority to 4 msgOut.Body Chr(KeyAscii)
  'Fill the body with char
  
• msgOut.Label "Key " msgOut.Body
• msgOut.Send qFriend 'And send
  the message
  
• End If
• Open queue for send access
• Create property set to define message
• Can Send Persistent Objects
• Receiving application must have the objects
  interface installed

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MSMQ ProgrammingSending a Message

• Scenario Using the Distributed Draw
  application, show the code for sending a message.

Demo
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Message Syntax Receive Message

• Receiving a Message
• Open queue for receive access
• Determine receive property set
• Set msgIn q.Receive(ReceiveTimeout100)
  
  
• To Receive Messages Without Removing Them from
  the Queue
  
• Use the Peek methods
• MSMQQueue.Peek
• MSMQQueue.PeekCurrent
• MSMQQueue.PeekNext

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MSMQ ProgrammingReceiving a Message

• Scenario Using the Distributed Draw
  application, show the code for receiving a
  message.

Demo
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Agenda

• MSMQ Overview
• Key Features and Benefits
• MSMQ Programming
• Related Technologies
• Beyond Windows 2000...

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Related Technologies

• Queued Components
• Windows CE Devices

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Queued Components

• Leverage MSMQ Benefits
• Connectionless method invocations
• Client Records Method Invocations and Server
  Plays Them Back
  
• COM
• Requires COM infrastructure deployment on both
  server and client
  
• Implies control over both client and server
• Windows 2000 Only

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Queued Components

• No Complete Control over Message Format
• Support Passing Objects By Value
• Object parameters must support IPersistStream
• Establish Two-way Client/Server Communication by
  Passing Client Recorder Object to Server

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Queued Components

• MSMQ Should Be Used When
• No control over receiver applications
• Interoperability with any non-COM system
• MSMQ Usage Examples
• Inter-company communication
• High-performance message broker server in
  financial application

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Windows CE Devices

• MSMQ to Ship in Windows CE 2.12 SP2 and then
  Windows CE 3.0
  
• Small MSMQ Footprint
• No Directory Service, DIRECT addressing only
• No security/authentication/encryption
• No remote read

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Agenda

• MSMQ Overview
• Key Features and Benefits
• MSMQ Programming
• Related Technologies
• Beyond Windows 2000...

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Beyond 2000

• MSMQ Everywhere
• Publish and Subscribe
• Miscellaneous

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MSMQ Everywhere

• Goal
• Allow MSMQ applications to assume MSMQ services
  are available everywhere
  
• Install MSMQ as Part of Setup
• Today (Windows 2000) requires Add/Remove step
• Working Set
• 180K today (Windows 2000) - get as close as
  possible to 0k on machines where MSMQ is inactive

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Publish And Subscribe

• Simple Pub/Sub API
• MQPublish publish an MSMQ message to a
  subject
  
• MQSubscribe subscribe to a subject, specify
  queue where messages will be placed
  
• Retain Familiar MSMQ Concepts
• Information is any MSMQ message
• Published messages end-up in MSMQ queues
• Efficient Delivery

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Miscellaneous

• Support Messages 4 MB
• Support Message Fragmentation
• Support 2 GB Total Message Storage
• Improvement in Startup Time
• Decouple Exactly-Once In-Order from
  Transactional Delivery
  
• Deferred Delivery

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Call to Action

• Use Message Queuing in Windows 2000 for
  Guaranteed Message Delivery
  
• Rely on MSMQ for Distributed Applications
• Interoperate with Other Platforms and Products
  Using MSMQ
  
• Microsoft MSMQ-MQSeries Bridge
• Level 8 Systems, Inc FalconMQ Client

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Questions?
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Resources

• msdn.microsoft.com
• msdn.microsoft.com/osig/win2000
• www.microsoft.com/windows2000/ready
• msdn.microsoft.com/vstudio/win2000
• msdn.microsoft.com/winlogo/win2000.asp
• www.microsoft.com/dna
• www.microsoft.com/msmq

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