Symbian3/PDK/Source/GUID-30DFBCAD-6A9F-5209-8C40-AB246F54F960.dita
author Dominic Pinkman <Dominic.Pinkman@Nokia.com>
Tue, 30 Mar 2010 11:56:28 +0100
changeset 5 f345bda72bc4
parent 1 25a17d01db0c
child 14 578be2adaf3e
permissions -rw-r--r--
Week 12 contribution of PDK documentation_content. See release notes for details. Fixes Bug 2054, Bug 1583, Bug 381, Bug 390, Bug 463, Bug 1897, Bug 344, Bug 1319, Bug 394, Bug 1520, Bug 1522, Bug 1892"
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<?xml version="1.0" encoding="utf-8"?>
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<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->
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<!-- This component and the accompanying materials are made available under the terms of the License 
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"Eclipse Public License v1.0" which accompanies this distribution, 
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and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". -->
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<!-- Initial Contributors:
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    Nokia Corporation - initial contribution.
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Contributors: 
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-->
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<!DOCTYPE task
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  PUBLIC "-//OASIS//DTD DITA Task//EN" "task.dtd">
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<task id="GUID-30DFBCAD-6A9F-5209-8C40-AB246F54F960" xml:lang="en"><title> QoS
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f345bda72bc4 Week 12 contribution of PDK documentation_content. See release notes for details. Fixes Bug 2054, Bug 1583, Bug 381, Bug 390, Bug 463, Bug 1897, Bug 344, Bug 1319, Bug 394, Bug 1520, Bug 1522, Bug 1892"
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API Tutorial</title><shortdesc>How to use the <codeph>RSubConnection</codeph> API for QoS. </shortdesc><prolog><metadata><keywords/></metadata></prolog><taskbody>
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<context id="GUID-54E41E79-A768-4599-B22B-40CBE4D909D9"><p>Quality of Service
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is implemented by setting parameters on a channel, a sub-connection <xref href="GUID-0AFDA357-EE44-3788-9CAB-162B874134BF.dita"><apiname>RSubConnection</apiname></xref> within
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a connection <xref href="GUID-BED8A733-2ED7-31AD-A911-C1F4707C67FD.dita"><apiname>RConnection</apiname></xref>.</p></context>
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<steps id="GUID-08112C18-3A2F-5624-BE17-AA20C4276104">
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<step id="GUID-9D8E746E-B384-54A6-A6D4-2D5ECF882DC5"><cmd>Set parameters on
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a channel that is a sub-connection, <xref href="GUID-0AFDA357-EE44-3788-9CAB-162B874134BF.dita"><apiname>RSubConnection</apiname></xref>. </cmd>
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<info> <xref href="GUID-BED8A733-2ED7-31AD-A911-C1F4707C67FD.dita"><apiname>RConnection</apiname></xref> contains one or more sub-connections.
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A default sub-connection is created automatically with the <xref href="GUID-BED8A733-2ED7-31AD-A911-C1F4707C67FD.dita"><apiname>RConnection</apiname></xref> and
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any added <xref href="GUID-DE825FAA-102B-3E7A-80E6-BC226BD7E64F.dita"><apiname>RSubConnections</apiname></xref>. The <xref href="GUID-0AFDA357-EE44-3788-9CAB-162B874134BF.dita"><apiname>RSubConnection</apiname></xref> API
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provides the functionality to divide a connection that is provided by the
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RConnection API into channels. The channels have properties such as bandwidth
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and latency. </info>
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</step>
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<step id="GUID-FB7F7F5A-498B-530B-9F45-EEEC17773A08"><cmd>Apply an <xref href="GUID-27AA9BD2-9754-3BAE-8C2D-59937E1924CF.dita"><apiname>RSubConParameterBundle</apiname></xref> to
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the <xref href="GUID-0AFDA357-EE44-3788-9CAB-162B874134BF.dita"><apiname>RSubConnection</apiname></xref> to set the sub-connection properties. </cmd>
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<info>The parameter bundle consists of families of parameters. A family is
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a connected set of parameters, such as QoS. Two families are defined, Quality
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of Service, <xref href="GUID-022ECBFB-911A-330B-B197-3BDAE6493981.dita"><apiname>KSubConQoSFamily</apiname></xref> and Authorisation, <xref href="GUID-B2567E44-BD9B-39B3-BB97-385124CFD973.dita"><apiname>KSubConAuthorisationFamily</apiname></xref>. </info>
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</step>
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<step id="GUID-5F819733-168B-5793-921E-8C752D382DE7"><cmd>Group the parameters
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that apply to an <xref href="GUID-0AFDA357-EE44-3788-9CAB-162B874134BF.dita"><apiname>RSubConnection</apiname></xref> into <xref href="GUID-5181C974-94F7-3C7D-9FFE-F38BD11001EB.dita"><apiname>CSubConParameterFamily</apiname></xref> families. </cmd>
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<info>Each parameter family contains parameter sets that are either generic
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or extension. There is one generic parameter set in a family and zero or more
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extension parameter sets. </info>
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</step>
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<step id="GUID-875333D1-493F-53BA-AB9F-891F73920E7F"><cmd>Each family of parameters
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consists of the values <xref href="GUID-ADF08336-B43B-31CB-9548-E265E1001F27.dita"><apiname>ERequested</apiname></xref> and the minimum you want
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to accept <xref href="GUID-754AF65B-376E-3A75-97F0-8ECF4560BCEF.dita"><apiname>EAcceptable</apiname></xref>. </cmd>
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<info>If you do not specify the <xref href="GUID-754AF65B-376E-3A75-97F0-8ECF4560BCEF.dita"><apiname>EAcceptable</apiname></xref> then the <xref href="GUID-ADF08336-B43B-31CB-9548-E265E1001F27.dita"><apiname>ERequested</apiname></xref> is
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used as the minimum acceptable. </info>
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</step>
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<step id="GUID-E9B31E46-CC7E-552E-8A79-8E3A803B5601"><cmd>When the parameters
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are applied and the subconnection is used then the parameter family is updated
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with a third set of values that is the <xref href="GUID-12DF975A-B43E-336F-817E-FDD099F7060A.dita"><apiname>EGranted</apiname></xref>. </cmd>
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<info>The <xref href="GUID-12DF975A-B43E-336F-817E-FDD099F7060A.dita"><apiname>EGranted</apiname></xref> is between the <xref href="GUID-754AF65B-376E-3A75-97F0-8ECF4560BCEF.dita"><apiname>EAcceptable</apiname></xref> and
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the <xref href="GUID-ADF08336-B43B-31CB-9548-E265E1001F27.dita"><apiname>ERequested</apiname></xref>. </info>
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</step>
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<step id="GUID-A7588A14-75CF-59AA-90E4-6412FEF794E4"><cmd>An event is raised
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to inform that the parameters are rejected or not granted. </cmd>
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<info>This occurs after the initial request, asynchronous event notification
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is used to inform the application what is negotiated. The application must
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monitor for the granted or rejected event notification. </info>
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</step>
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</steps>
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</taskbody></task>