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1 // Copyright (c) 2003-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // Signalling session |
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15 // A signalling session represents one RGavdp object. It is-a transport session. |
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16 // Each signalling session is bound to a signalling channel - a signalling channel can support many |
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17 // signalling sessions. |
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18 // The multiplexing allows for many applications to stream to the same remote device |
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19 // A signalling session also "manages" each of the stream endpoints registered by an RGavdp client. |
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20 // A RGavdp client may register many (local) seps. |
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21 // The signalling session receives indications from the signalling channel - since the signalling channel |
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22 // (intentionally) doesn't know which SEPs are managed by which session various protocol events are |
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23 // offered to all of the signalling sessions. |
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24 // The signalling sessions should then see if they manage a sep for which the protocol event has happened |
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25 // and "consume" the event. |
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26 // At certain stages in the protocol state machine the local seps may "grow" a stream. Subsequent protocol |
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27 // primitives may then be called via the sep's stream. |
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28 // The specification does not define Signalling Sessions. However they are required to fulfill the need to |
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29 // support streams from multiple applications to the same target device. |
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30 // the session is then "fixed" to that remote. Therefore all SEPs managed by the session |
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31 // become available only for use with that remote. The user *can* (if this is important) |
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32 // still use multiple SEPs by placing one SEP in one RGavdp (implies one signalling session) |
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33 // a future extension would be to see from which remote address a configure had been received |
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34 // Hence there is one SEP pointer recording the SEP undergoing configuration |
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35 // |
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36 // |
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37 |
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38 /** |
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39 @note This design has a restriction at this point in time. Once connected to a remote |
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40 @note At present this design allows for at most one SEP to undergo configuration at a time from all remote devices |
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41 */ |
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42 |
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43 #ifndef AVDTPSIGNALLINGSESSION_H |
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44 #define AVDTPSIGNALLINGSESSION_H |
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45 |
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46 #include "avdtpTransportSession.h" |
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47 #include "avdtpStream.h" |
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48 |
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49 |
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50 const TInt KAvdtpACPReleaseChannelCloseTimeout = 10000000; |
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51 |
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52 |
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53 class CTransportChannel; |
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54 class CAvdtpSAP; |
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55 class CAvdtpProtocol; |
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56 class CSignallingChannel; |
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57 class CSEPConfigurator; |
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58 class CLocalSEP; |
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59 |
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60 |
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61 NONSHARABLE_CLASS(CSignallingSession) : public CTransportSession, public XAvdtpSignalReceiver, public MAvdtpStreamNotify |
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62 { |
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63 friend class CLocalSEPConfigurator; |
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64 friend class CRemoteSEPConfigurator; |
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65 |
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66 public: |
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67 static CSignallingSession* NewLC(CAvdtpProtocol& aProtocol, CAvdtpSAP& aSAP); |
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68 static CSignallingSession* NewL(CAvdtpProtocol& aProtocol, CAvdtpSAP& aSAP); |
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69 |
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70 virtual TInt SetOption(TUint aLevel, TUint aName, const TDesC8 &aOption); |
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71 virtual TInt GetOption(TUint aLevel, TUint aName, TDes8& aOption) const; |
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72 virtual void Ioctl(TUint aLevel, TUint aName, const TDesC8* aOption); |
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73 virtual void CancelIoctl(TUint aLevel, TUint aName); |
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74 virtual TInt Send(RMBufChain& aData, TUint aOptions, TSockAddr* aAddr); |
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75 virtual TInt GetData(RMBufChain& aData); |
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76 virtual void DoShutdown(); |
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77 |
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78 virtual TInt ActiveOpen(); |
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79 ~CSignallingSession(); |
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80 |
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81 private: |
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82 //from signal receiver - we're interested in most, but not all service upcalls |
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83 virtual TInt DiscoverIndication(TAvdtpTransactionLabel aLabel, CAvdtpOutboundSignallingMessage& aDiscoverResponsePacket); |
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84 virtual TInt GetCapsIndication(TAvdtpTransactionLabel aLabel, |
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85 TSEID aSEID, |
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86 CAvdtpOutboundSignallingMessage& aGetCapsResponseMessage); |
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87 virtual TInt SetConfigIndication(TAvdtpTransactionLabel aLabel, TSEID aLocalSEID, |
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88 TSEID aINTSEID, RBuf8& aConfigData); |
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89 virtual TInt GetConfigIndication(TAvdtpTransactionLabel aLabel, TSEID aLocalSEID, |
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90 CAvdtpOutboundSignallingMessage& /*aGetConfigResponseMessage*/); |
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91 virtual TInt ReconfigIndication(TAvdtpTransactionLabel aLabel, |
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92 TSEID aLocalSEID, |
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93 RBuf8& aNewConfig); |
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94 virtual TInt OpenIndication(TSEID aLocalSEID); |
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95 virtual TInt StartIndication(TAvdtpTransactionLabel aLabel, TSEID aLocalSEID); |
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96 virtual TInt ReleaseIndication(TAvdtpTransactionLabel aLabel, TSEID aLocalSEID); |
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97 virtual TInt SuspendIndication(TAvdtpTransactionLabel aLabel, TSEID aLocalSEID); |
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98 virtual TInt AbortIndication(TAvdtpTransactionLabel aLabel, TSEID aLocalSEID); |
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99 virtual TInt SecurityControlIndication(TAvdtpTransactionLabel aLabel, TSEID aLocalSEID, const HBufC8* aSecurityData); |
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100 |
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101 virtual void SignallingChannelError(TInt aError); |
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102 // protocol confirms |
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103 // no labels needed |
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104 |
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105 virtual void DiscoverConfirm(TInt aResult, const TAvdtpInternalDiscoverConfirm* const aConfirm); |
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106 virtual void GetCapsConfirm(TInt aResult, TSEID aRemoteSEID, TAvdtpServiceCatBitMask aSeen); |
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107 virtual void AbortConfirm(TSEID aRemoteSEID); |
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108 virtual void SecurityControlConfirm(TInt aResult, TSEID aRemoteSEID, const TDesC8& aResponseData); |
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109 |
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110 // interface from stream |
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111 virtual void StreamStarted(TSEID aLocalSEID); |
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112 virtual void StreamSuspended(TSEID aLocalSEID); |
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113 virtual void StreamAccepted(TSEID aLocalSEID, TSEID aRemoteSEID, TBool aWithReporting, TBool aWithRecovery); |
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114 virtual void StreamConfigured(TSEID aLocalSEID, TInt aError, TAvdtpServiceCategory aFailedCategory); |
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115 virtual void StreamInitiatedServiceFailed(const CAVStream& aStream, TInt aError); |
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116 virtual void StreamReadyForStartIndication(const TAvdtpTransactionLabel aLabel, const TSEID aSEID); |
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117 |
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118 // callbacks from signalling channel |
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119 virtual void ServiceError(TInt aError); |
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120 virtual void SignallingChannelReady(CSignallingChannel& aNewChannel); |
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121 |
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122 private: |
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123 void DoConfigureStreamL(RBuf8& aConfigBuffer, |
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124 CLocalSEP& aLocalSEP, |
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125 TSEID aRemoteSEID, |
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126 TBool aReportingConfigured, |
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127 TBool aRecoveryConfigured); |
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128 TInt SendAbort(TSEID aRemoteSEID); |
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129 void CreateLocalSEPL(TAvdtpSEPInfo& aSEPInfo); // note, not const ref |
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130 CLocalSEP& FindLocalSEPL(TSEID aSEID) const; |
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131 CLocalSEP* FindLocalSEP(TSEID aSEID) const; |
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132 |
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133 CSignallingSession(CAvdtpProtocol& aProtocol, CAvdtpSAP& aSAP); |
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134 void ConstructL(); |
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135 TInt DoAddCapabilitySetOpt(const TDesC8& aOption); |
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136 inline void CompleteBasicService(TInt aErr); |
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137 |
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138 CAVStream* FindStreamFromRemoteSEID(const TSEID& aRemoteSEID) const; |
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139 void ClearSignallingChannel(); |
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140 void DestroyLocalSEPs(); |
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141 void DestroyStream(CAVStream* aStream, TInt aError); |
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142 |
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143 private: |
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144 CSignallingChannel* iSignallingChannel; // non-owned |
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145 CSEPConfigurator* iSEPConfigurator; |
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146 mutable TDblQue<CLocalSEP> iLocalSEPs; // those awaiting discover (by "our" app) |
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147 |
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148 TBool iIsListening; |
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149 }; |
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150 |
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151 /* |
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152 @internalComponent |
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153 */ |
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154 // goes through to see if remote has proposed unsupported local categories |
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155 NONSHARABLE_CLASS(CCapabilityNotAllowedVisitor) : public CCapabilityVisitor |
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156 { |
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157 public: |
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158 CCapabilityNotAllowedVisitor(TAvdtpServiceCategories aLocallySupported); |
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159 virtual TBool Capability(TAvdtpServiceCategory aCat); |
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160 inline TBool IsValid() const; |
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161 inline TAvdtpServiceCategory WrongCategory() const; |
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162 private: |
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163 TAvdtpServiceCategories iLocallySupported; |
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164 TBool iIsValid; |
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165 TAvdtpServiceCategory iWrongCategory; |
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166 }; |
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167 |
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168 |
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169 #endif //AVDTPSIGNALLINGSESSION_H |
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170 |