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1 /* |
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2 * Copyright (c) 2009-2010 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html." |
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8 * Initial Contributors: |
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9 * Nokia Corporation - initial contribution. |
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10 * Contributors: |
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11 * |
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12 * Description: |
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13 * MSRP Implementation |
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14 * |
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15 */ |
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16 |
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17 // CLASS HEADER |
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18 #include "CMSRPConnection.h" |
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19 #include "MSRPCommon.h" |
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20 // INTERNAL INCLUDES |
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21 #include "CMSRPConnector.h" |
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22 #include "CMSRPReader.h" |
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23 #include "CMSRPParser.h" |
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24 #include "CMSRPWriter.h" |
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25 |
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26 // ----------------------------------------------------------------------------- |
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27 // Constructor |
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28 // ----------------------------------------------------------------------------- |
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29 // |
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30 CMSRPConnection::CMSRPConnection( TInetAddr& aRemoteAddr, MMSRPConnectionManager& aConnMngr ): iHostAddress(aRemoteAddr), iConnMngr(aConnMngr) |
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31 { |
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32 MSRPLOG( "CMSRPConnection::CMSRPConnection enter" ) |
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33 MSRPLOG( "CMSRPConnection::CMSRPConnection exit" ) |
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34 } |
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35 |
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36 // ----------------------------------------------------------------------------- |
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37 // CMSRPConnection::~CMSRPConnection |
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38 // ----------------------------------------------------------------------------- |
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39 // |
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40 CMSRPConnection::~CMSRPConnection() |
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41 { |
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42 MSRPLOG( "CMSRPConnection::~CMSRPConnection enter" ) |
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43 iSubsessions.Reset(); |
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44 iSubsessions.Close(); |
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45 delete iListenTimer; |
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46 delete iConnector; |
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47 delete iWriter; |
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48 delete iParser; |
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49 delete iReader; |
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50 //delete iBufPool; |
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51 if(iSocket) |
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52 { |
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53 iSocket->Close(); |
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54 delete iSocket; |
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55 } |
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56 |
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57 MSRPLOG( "CMSRPConnection::~CMSRPConnection exit" ) |
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58 } |
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59 |
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60 // ----------------------------------------------------------------------------- |
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61 // CMSRPConnection* CMSRPConnection::NewL |
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62 // ----------------------------------------------------------------------------- |
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63 // |
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64 /*static*/ MMSRPConnection* CMSRPConnection::NewL( TInetAddr& aRemoteAddr, MMSRPConnectionManager& aConnMngr ) |
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65 { |
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66 MSRPLOG( "CMSRPConnection::NewL enter" ) |
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67 |
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68 // Perform construction. |
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69 CMSRPConnection* self = new ( ELeave ) CMSRPConnection(aRemoteAddr, aConnMngr); |
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70 CleanupStack::PushL( self ); |
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71 self->ConstructL( ); |
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72 CleanupStack::Pop( self ); |
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73 |
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74 MSRPLOG( "CMSRPConnection::NewL exit" ) |
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75 return self; |
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76 } |
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77 |
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78 // ----------------------------------------------------------------------------- |
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79 // CMSRPConnection::ConstructL |
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80 // ----------------------------------------------------------------------------- |
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81 // |
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82 void CMSRPConnection::ConstructL( ) |
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83 { |
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84 MSRPLOG( "CMSRPConnection::ConstructL enter" ) |
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85 iConnectionState = ENotConnected; |
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86 iListenTimer = CMSRPTimeOutTimer::NewL( *this ); |
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87 MSRPLOG( "CMSRPConnection::ConstructL exit" ) |
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88 } |
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89 |
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90 // ----------------------------------------------------------------------------- |
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91 // CMSRPConnection::CheckIfConnected |
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92 // listening state check for validating listener connections |
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93 // ----------------------------------------------------------------------------- |
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94 // |
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95 TBool CMSRPConnection::CheckConnection(TInetAddr& aRemoteAddr, TBool aOnlyListen) |
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96 { |
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97 MSRPLOG( "CMSRPConnection::CheckConnection enter" ) |
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98 TUint port_stored = iHostAddress.Port(); |
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99 TUint port_connect = aRemoteAddr.Port(); |
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100 |
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101 //if (iHostAddress.CmpAddr(aRemoteAddr))//v4, v6 issue |
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102 if (iHostAddress.Match(aRemoteAddr) && port_stored == port_connect) |
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103 { |
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104 if (aOnlyListen && iConnectionState == EListening) //check if listening |
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105 return ETrue; |
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106 else if (!aOnlyListen /*&& iConnectionState <= EConnected */) //not connected, connecting, listening, connected |
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107 return ETrue; |
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108 /*else |
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109 return EFalse;*/ //timed out, disconnecting, disconnected, create a new conn object |
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110 } |
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111 MSRPLOG( "CMSRPConnection::CheckConnection exit" ) |
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112 return EFalse; |
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113 } |
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114 |
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115 // ----------------------------------------------------------------------------- |
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116 // CMSRPConnection::ConnectL |
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117 // ----------------------------------------------------------------------------- |
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118 // |
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119 TInt CMSRPConnection::ConnectL(MMSRPConnectionObserver& aSubsession) |
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120 { |
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121 MSRPLOG("CMSRPConnection::ConnectL() enter") |
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122 //subsession to ensure it does not reissue |
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123 //connection does not check for pre-existent observers |
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124 |
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125 iSubsessions.AppendL(&aSubsession); |
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126 |
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127 switch(iConnectionState) |
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128 { |
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129 case ENotConnected: |
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130 //create connector and issue connect |
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131 //delete iConnector; |
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132 iConnector = CMSRPConnector::NewL( iConnMngr, *this ); |
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133 iConnector->Connect(iHostAddress); |
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134 iConnectionState = EConnecting; |
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135 |
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136 break; |
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137 |
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138 case EConnecting: |
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139 break; |
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140 |
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141 case EListening: //as of now, dont try to issue connect,complete when other party connects |
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142 //TBD |
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143 //later change state to connecting and issue connect |
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144 //if connect completes before listen, then change state to connected |
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145 // if at all listen completes on same conn object, then check if state == connected and drop listen conn |
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146 // do vice versa if listen completes before connect |
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147 break; |
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148 |
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149 case EConnected: |
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150 break; |
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151 |
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152 case EListenTimedOut: |
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153 case EConnectTimedOut: |
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154 case EError: |
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155 //shudn't reach here, if connect issued immediately after/within getConn |
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156 //User::Leave(MMSRPConnectionObserver::EConnectionStateUnexpected); |
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157 break; |
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158 |
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159 } |
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160 MSRPLOG("CMSRPConnection::ConnectL() exit") |
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161 return iConnectionState; |
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162 } |
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163 |
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164 |
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165 // ----------------------------------------------------------------------------- |
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166 // CMSRPConnection::ListenL |
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167 // ----------------------------------------------------------------------------- |
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168 // |
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169 TInt CMSRPConnection::ListenL(MMSRPConnectionObserver& aSubsession) |
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170 { |
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171 MSRPLOG("CMSRPConnection::ListenL() enter") |
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172 |
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173 iSubsessions.AppendL(&aSubsession); |
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174 |
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175 |
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176 switch(iConnectionState) |
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177 { |
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178 case ENotConnected: |
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179 iConnectionState = EListening; |
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180 iConnMngr.ListenL(this); |
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181 //iListenTimer->After( KListenTimeoutInSeconds * KSecondinMicroseconds ); |
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182 |
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183 break; |
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184 |
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185 case EConnecting: //dont issue listen, drop conn if other party connects, change later |
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186 |
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187 //added check if listening in check connection to prevent accepting conn, |
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188 //simply allowing will corrupt listen count, TBD: introduce another EListeningandConnecting state |
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189 break; |
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190 |
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191 case EListening: |
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192 break; |
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193 |
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194 case EConnected: |
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195 break; |
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196 |
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197 case EListenTimedOut: |
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198 case EConnectTimedOut: |
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199 case EError: |
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200 //shudn't reach here, if connect issued immediately after/within getConn |
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201 //User::Leave(MMSRPConnectionObserver::EConnectionStateUnexpected); |
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202 break; |
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203 |
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204 } |
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205 MSRPLOG("CMSRPConnection::ListenL() exit") |
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206 return iConnectionState; |
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207 |
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208 } |
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209 |
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210 // ----------------------------------------------------------------------------- |
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211 // CMSRPConnection::ReleaseConnection |
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212 // ----------------------------------------------------------------------------- |
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213 // |
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214 void CMSRPConnection::ReleaseConnection(MMSRPConnectionObserver& aSubsession) |
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215 { |
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216 MSRPLOG("CMSRPConnection::ReleaseConnection() enter") |
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217 |
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218 Remove(&aSubsession); |
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219 |
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220 if(iSubsessions.Count()) |
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221 { |
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222 MSRPLOG("CMSRPConnection::ReleaseConnection() exit") |
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223 return; |
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224 } |
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225 |
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226 //if no subsessions (TBD : start timeout timer and disconnect on timeout) |
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227 /*if(iConnectionState == EConnecting) |
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228 { |
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229 //iConnector->CancelConnect(); |
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230 delete iConnector; |
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231 iConnector = NULL; |
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232 } |
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233 else if(iConnectionState == EConnected)*/ |
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234 |
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235 CloseConnection(); |
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236 |
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237 |
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238 //iConnectionState = ENotConnected; |
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239 MSRPLOG("CMSRPConnection::ReleaseConnection() exit") |
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240 return; |
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241 } |
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242 |
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243 // ----------------------------------------------------------------------------- |
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244 // CMSRPConnection::ConnectionEstablishedL |
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245 // ----------------------------------------------------------------------------- |
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246 // |
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247 void CMSRPConnection::ConnectionEstablishedL( TInt aNewState, RSocket* aSocket, TInt aStatus ) |
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248 { |
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249 MSRPLOG("CMSRPConnection::ConnectionEstablishedL() enter") |
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250 iListenTimer->Cancel(); |
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251 //if not error |
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252 if(aNewState == EConnected) |
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253 { |
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254 iConnectionState = aNewState; |
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255 iSocket = aSocket; |
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256 if(iConnector) |
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257 { |
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258 iConnector->ConnectComplete(); |
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259 /*dont delete now,as in case of leave, connector needs 2 b available*/ |
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260 //delete iConnector; |
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261 //iConnector = NULL; |
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262 } |
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263 iWriter = CMSRPWriter::NewL(*iSocket , *this); |
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264 iParser = CMSRPParser::NewL(*this); |
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265 iReader = CMSRPReader::NewL(*iSocket , *this); |
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266 |
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267 iReader->StartReceivingL(iBufPool.ProvideBufferL()); |
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268 } |
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269 |
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270 /*not deleting connector as yet, notify all could leave in subsession and also delete conn on conn error*/ |
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271 //intimate all subsessions |
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272 NotifyAllL(aNewState, aStatus ); |
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273 |
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274 //on error or connect timeout close connection, i.e. intimate all subsessions and delete connection obj |
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275 if(aStatus != KErrNone) |
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276 { |
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277 //listenaccepted does not comeback with error intimations, hence safe to decrement listen count |
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278 //currently no risk of double decrementing listener count |
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279 //CloseConnection(); |
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280 } |
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281 |
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282 |
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283 |
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284 MSRPLOG("CMSRPConnection::ConnectionEstablishedL() exit") |
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285 } |
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286 |
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287 TInt CMSRPConnection::getConnectionState() |
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288 { |
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289 return iConnectionState; |
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290 // iConnection state should not be Tint, it should be MMSRPConnection::TMSRPConnectionState. |
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291 } |
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292 |
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293 // ----------------------------------------------------------------------------- |
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294 // CMSRPConnection::ReadStatus |
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295 // ----------------------------------------------------------------------------- |
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296 // |
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297 void CMSRPConnection::ReadStatusL(RMsrpBuf& aBuf, TInt aStatus) |
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298 { |
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299 MSRPLOG("CMSRPConnection::ReadStatusL() enter") |
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300 if(aStatus == KErrNone) |
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301 { |
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302 //post to parser and return immediate |
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303 iParser->ParseL(aBuf); |
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304 |
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305 RMsrpBuf copy(aBuf); |
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306 if(copy.MsrpRightExtract() > KThreshold) |
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307 { |
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308 iReader->StartReceivingL(copy); |
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309 } |
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310 else |
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311 { |
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312 iReader->StartReceivingL(iBufPool.ProvideBufferL()); |
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313 } |
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314 return; |
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315 } |
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316 //read error or connection error |
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317 //intimate all subsessions |
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318 NotifyAllL(EError, aStatus ); |
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319 //CloseConnection(); |
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320 |
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321 MSRPLOG("CMSRPConnection::ReadStatusL() exit") |
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322 } |
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323 |
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324 void CMSRPConnection::ParseStatusL (CMSRPMessageHandler* aMsg, TInt aStatus) |
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325 { |
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326 MSRPLOG("CMSRPConnection::ParseStatus enter") |
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327 if (aStatus != KErrNone) |
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328 { |
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329 NotifyAllL(EError, aStatus ); |
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330 //CloseConnection(); |
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331 return; |
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332 } |
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333 |
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334 /*if error, count is zero*/ |
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335 //while msg not consumed try to handover |
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336 TBool consumed = FALSE; |
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337 for ( TInt i = 0; (!consumed) && i < iSubsessions.Count(); i++ ) |
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338 { |
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339 consumed = iSubsessions[ i ]->MessageReceivedL( aMsg ); |
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340 } |
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341 |
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342 //if unclaimed by any subsession, callback to first subsession |
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343 if(!consumed && iSubsessions.Count()) |
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344 { |
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345 iSubsessions[0]->UnclaimedMessageL( aMsg ); |
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346 } |
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347 |
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348 MSRPLOG("CMSRPConnection::ParseStatus exit") |
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349 } |
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350 |
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351 // ----------------------------------------------------------------------------- |
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352 // CMSRPConnection::WriteSocketError |
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353 // ----------------------------------------------------------------------------- |
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354 // |
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355 void CMSRPConnection::WriteSocketError(TInt aStatus) |
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356 { |
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357 MSRPLOG("CMSRPConnection::WriteSocketError() enter") |
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358 TInt err =0; |
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359 TRAP(err, NotifyAllL(EError, aStatus)); |
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360 //CloseConnection(); |
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361 MSRPLOG("CMSRPConnection::WriteSocketError() exit") |
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362 } |
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363 |
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364 // ----------------------------------------------------------------------------- |
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365 // CMSRPConnection::Send |
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366 // ----------------------------------------------------------------------------- |
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367 // |
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368 void CMSRPConnection::SendL(MMSRPWriterObserver& aMsg) |
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369 { |
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370 MSRPLOG("CMSRPConnection::SendL() enter") |
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371 if(iConnectionState == EConnected) |
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372 iWriter->RequestSendL(aMsg); |
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373 MSRPLOG("CMSRPConnection::SendL() exit") |
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374 } |
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375 |
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376 // ----------------------------------------------------------------------------- |
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377 // CMSRPConnection::TimerExpired |
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378 // ----------------------------------------------------------------------------- |
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379 // |
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380 void CMSRPConnection::TimerExpiredL() |
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381 { |
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382 MSRPLOG("CMSRPConnection::TimerExpired() enter") |
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383 if(iConnectionState == EListening) |
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384 NotifyAllL(EListenTimedOut, KErrTimedOut); |
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385 else |
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386 NotifyAllL(EConnectTimedOut, KErrTimedOut); |
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387 //iConnMngr.ListenCancel(this); |
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388 MSRPLOG("CMSRPConnection::TimerExpired() exit") |
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389 } |
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390 |
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391 |
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392 // ----------------------------------------------------------------------------- |
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393 // CMSRPConnection::Remove |
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394 // ----------------------------------------------------------------------------- |
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395 // |
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396 void CMSRPConnection::Remove(MMSRPConnectionObserver* aSubsession) |
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397 { |
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398 MSRPLOG("CMSRPConnection::Remove() enter") |
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399 TInt index = iSubsessions.Find(aSubsession); |
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400 //iSubsessions[index].DisconnectIssued; |
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401 if(index != KErrNotFound) |
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402 iSubsessions.Remove(index); |
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403 MSRPLOG("CMSRPConnection::Remove() exit") |
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404 } |
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405 |
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406 // ----------------------------------------------------------------------------- |
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407 // CMSRPConnection::CloseConnection |
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408 // ----------------------------------------------------------------------------- |
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409 // |
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410 void CMSRPConnection::CloseConnection() |
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411 { |
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412 MSRPLOG("CMSRPConnection::CloseConnection() enter") |
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413 //for connected no listen cancel needed |
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414 //for listener error listener deleted |
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415 if(/*iConnectionState == EListenConnected ||*/ iConnectionState == EListening || iConnectionState == EListenTimedOut) |
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416 iConnMngr.ListenCancel(this); |
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417 else |
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418 //deleting connection, takes care of issuing cancel connect on connector also (if connecting) |
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419 iConnMngr.Remove(this); |
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420 MSRPLOG("CMSRPConnection::CloseConnection() exit") |
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421 } |
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422 |
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423 |
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424 |
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425 // ----------------------------------------------------------------------------- |
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426 // CMSRPConnection::NotifyAll |
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427 // ----------------------------------------------------------------------------- |
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428 // |
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429 void CMSRPConnection::NotifyAllL(TInt aNewState, TInt aStatus ) |
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430 { |
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431 MSRPLOG("CMSRPConnection::NotifyAll() enter") |
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432 iConnectionState = aNewState; |
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433 for ( TInt i = 0; i < iSubsessions.Count(); i++ ) |
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434 { |
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435 //make sure connectionstate does not release in notify |
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436 //else returns a value to reflect the same |
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437 iSubsessions[ i ]->ConnectionStateL( aNewState, aStatus ); |
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438 } |
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439 MSRPLOG("CMSRPConnection::NotifyAll() exit") |
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440 } |
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441 |
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442 |
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443 // End of File |