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1 /* |
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2 * Copyright (c) 2003-2007 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 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: IKEv1 keep alive object |
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15 * |
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16 */ |
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17 |
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18 |
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19 #include <eikenv.h> |
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20 #include <es_sock.h> |
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21 #include <e32math.h> |
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22 #include "ikedebug.h" |
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23 #include "ikev1keepalive.h" |
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24 #include "ikev1pluginsession.h" |
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25 |
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26 _LIT8(KMsgContent, "\xff"); |
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27 |
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28 CIkeV1KeepAlive* CIkeV1KeepAlive::NewL( CIkev1PluginSession& aPluginSession, |
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29 TInt aPort, |
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30 TInetAddr& aDestAddr, |
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31 TInt NatKeepAlive, |
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32 TInt DpdKeepAlive, |
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33 MDpdHeartBeatEventHandler* aHandler, |
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34 TUint8 aDscp ) |
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35 { |
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36 CIkeV1KeepAlive* self = new (ELeave) CIkeV1KeepAlive( aPluginSession, |
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37 aPort, |
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38 aDestAddr, |
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39 NatKeepAlive, |
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40 DpdKeepAlive, |
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41 aHandler, |
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42 aDscp ); |
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43 CleanupStack::PushL( self ); |
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44 self->ConstructL(); |
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45 CleanupStack::Pop( self ); |
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46 return self; |
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47 } |
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48 |
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49 |
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50 |
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51 CIkeV1KeepAlive::CIkeV1KeepAlive( CIkev1PluginSession& aPluginSession, |
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52 TInt aPort, |
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53 TInetAddr& aDestAddr, |
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54 TInt aNatKeepAlive, |
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55 TInt aDpdKeepAlive, |
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56 MDpdHeartBeatEventHandler* aHandler, |
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57 TUint8 aDscp ) |
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58 : CTimer( EPriorityStandard ), |
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59 iPluginSession( aPluginSession ), |
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60 iPort( aPort ), |
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61 iMsg( KMsgContent ) |
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62 { |
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63 iDestAddr = aDestAddr; |
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64 iNatKeepAlive = aNatKeepAlive; |
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65 iDpdKeepAlive = aDpdKeepAlive; |
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66 iCallback = aHandler; |
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67 iDscp = aDscp; |
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68 CActiveScheduler::Add( this ); |
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69 } |
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70 |
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71 //Destructor |
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72 CIkeV1KeepAlive::~CIkeV1KeepAlive() |
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73 { |
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74 Cancel(); |
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75 } |
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76 |
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77 |
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78 void CIkeV1KeepAlive::ConstructL() |
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79 { |
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80 // |
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81 // If NAT keepalive timoeut allocate (and initialize) a TIkeXmitBfr data buffer for |
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82 // NAT keepalive. Allocate a data buffer for special "Echo request" |
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83 // keepalive message, if proprietary "Nokia NAT Traversal is used". |
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84 // Start keep alive timer |
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85 // |
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86 CTimer::ConstructL(); |
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87 |
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88 if ( (iNatKeepAlive >= iDpdKeepAlive) && (iDpdKeepAlive != 0) && iCallback ) |
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89 iNatKeepAlive = 0; // Not needed |
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90 |
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91 if ( iNatKeepAlive ) |
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92 { |
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93 iDestAddr.SetPort(iPort); |
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94 |
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95 iRemainingTime = iNatKeepAlive; |
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96 if ( iCallback ) |
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97 iCurrDPDTimeLeft = iDpdKeepAlive - iNatKeepAlive; |
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98 else iDpdKeepAlive = 0; |
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99 } |
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100 else |
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101 { |
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102 iRemainingTime = iDpdKeepAlive; |
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103 } |
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104 |
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105 StartTimer(); |
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106 } |
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107 |
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108 |
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109 void CIkeV1KeepAlive::DoCancel() |
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110 { |
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111 CTimer::DoCancel(); |
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112 } |
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113 |
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114 void CIkeV1KeepAlive::RunL() |
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115 { |
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116 if ( iRemainingTime == 0 ) |
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117 { |
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118 TBool DpdEvent = EFalse; |
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119 if ( iDpdKeepAlive ) |
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120 { |
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121 if ( ( iCurrDPDTimeLeft == 0 ) && iCallback ) |
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122 { |
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123 // |
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124 // Call DPD event handler |
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125 // |
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126 DpdEvent = ETrue; |
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127 iCallback->EventHandlerL(); |
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128 iRemainingTime = iDpdKeepAlive; |
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129 } |
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130 } |
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131 |
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132 if ( iNatKeepAlive ) |
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133 { |
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134 // |
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135 // Send a NAT keepalive message(s) |
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136 // |
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137 if ( !DpdEvent ) |
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138 { |
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139 iPluginSession.SendNatKeepAliveL( iDestAddr, |
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140 iMsg, |
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141 iDscp ); |
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142 } |
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143 |
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144 iRemainingTime = iNatKeepAlive; |
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145 |
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146 if ( iDpdKeepAlive ) |
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147 { |
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148 if ( DpdEvent ) |
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149 { |
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150 iCurrDPDTimeLeft = iDpdKeepAlive - iNatKeepAlive; |
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151 } |
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152 else |
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153 { |
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154 if ( iCurrDPDTimeLeft < iNatKeepAlive ) |
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155 { |
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156 iRemainingTime = iCurrDPDTimeLeft; |
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157 iCurrDPDTimeLeft = 0; |
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158 } |
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159 else iCurrDPDTimeLeft -= iNatKeepAlive; |
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160 } |
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161 } |
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162 } |
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163 } |
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164 |
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165 StartTimer(); |
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166 } |
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167 |
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168 TInt CIkeV1KeepAlive::RunError(TInt /*aError*/) |
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169 { |
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170 return KErrNone; |
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171 } |
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172 |
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173 void CIkeV1KeepAlive::StartTimer() |
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174 { |
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175 if ( iRemainingTime > KMaxTInt/1000000 ) //To avoid overflowing the Timer |
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176 { |
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177 iRemainingTime -= KMaxTInt/1000000; |
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178 After(KMaxTInt); |
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179 } |
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180 else //No overflow |
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181 { |
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182 if ( iRemainingTime ) |
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183 { |
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184 After(iRemainingTime*1000000); |
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185 } |
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186 iRemainingTime = 0; |
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187 } |
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188 } |
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189 |