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1 // Copyright (c) 2006-2009 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 // Name : COutgoingRequestQueue.cpp |
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15 // Part of : ConnectionMgr |
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16 // Version : SIP/5.0 |
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17 // |
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18 |
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19 |
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20 |
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21 #include "COutgoingRequestQueue.h" |
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22 #include "MOutgoingRequestQueueContext.h" |
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23 #include "CTransport.h" |
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24 #include "siprequest.h" |
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25 #include "sipstrings.h" |
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26 #include "sipstrconsts.h" |
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27 #include "sipcontactheader.h" |
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28 #include "sipviaheader.h" |
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29 #include "siptoheader.h" |
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30 #include "sipfromheader.h" |
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31 #include "uricontainer.h" |
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32 #include "sipuri.h" |
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33 #include "sipaddress.h" |
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34 #include "siphostport.h" |
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35 #include "TSIPTransportParams.h" |
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36 #include "sipstrings.h" |
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37 #include "sipstrconsts.h" |
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38 #include "SIPHeaderLookup.h" |
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39 #include "siperr.h" |
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40 #include <sipnattraversalcontroller.h> |
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41 |
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42 const TInt KRequestQueueGranularity = 4; |
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43 |
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44 // ----------------------------------------------------------------------------- |
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45 // COutgoingRequestQueue::NewLC |
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46 // ----------------------------------------------------------------------------- |
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47 // |
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48 COutgoingRequestQueue* COutgoingRequestQueue::NewL( |
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49 MOutgoingRequestQueueContext& aContext, |
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50 CSIPNATTraversalController& aNATTraversal, |
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51 RConnection& aConnection, |
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52 TUint32 aIapId ) |
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53 { |
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54 COutgoingRequestQueue* self = |
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55 new ( ELeave ) COutgoingRequestQueue( aContext, |
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56 aNATTraversal, |
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57 aConnection, |
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58 aIapId ); |
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59 |
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60 CleanupStack::PushL( self ); |
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61 self->ConstructL(); |
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62 CleanupStack::Pop( self ); |
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63 return self; |
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64 } |
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65 |
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66 // ----------------------------------------------------------------------------- |
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67 // COutgoingRequestQueue::~COutgoingRequestQueue |
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68 // ----------------------------------------------------------------------------- |
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69 // |
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70 COutgoingRequestQueue::~COutgoingRequestQueue() |
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71 { |
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72 iNATTraversal.FreeResources( iIapId ); |
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73 iRequestQueue.Close(); |
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74 iStrNATTraversalRequired.Close(); |
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75 } |
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76 |
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77 // ----------------------------------------------------------------------------- |
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78 // COutgoingRequestQueue::RequestComplete |
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79 // From MSIPNATTraversalRequestObserver |
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80 // ----------------------------------------------------------------------------- |
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81 // |
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82 void COutgoingRequestQueue::RequestComplete( |
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83 TUint32 aRequestId, |
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84 TInt aCompletionCode ) |
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85 { |
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86 TInt index = FindRequestQueueItemIndex( aRequestId ); |
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87 if ( index != KErrNotFound ) |
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88 { |
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89 Complete( iRequestQueue[ index ], aCompletionCode, EFalse ); |
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90 iRequestQueue.Remove( index ); |
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91 iRequestQueue.Compress(); |
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92 } |
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93 ActivatePendingRequests(); |
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94 } |
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95 |
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96 // ----------------------------------------------------------------------------- |
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97 // COutgoingRequestQueue::PublicAddrResolved |
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98 // From MSIPNATTraversalRequestObserver |
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99 // ----------------------------------------------------------------------------- |
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100 // |
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101 void COutgoingRequestQueue::PublicAddrResolved( |
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102 TUint32 aRequestId, |
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103 const TInetAddr& aPublicAddr ) |
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104 { |
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105 TInt index = FindRequestQueueItemIndex( aRequestId ); |
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106 if ( index != KErrNotFound ) |
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107 { |
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108 Update( iRequestQueue[ index ], aPublicAddr ); |
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109 iRequestQueue.Remove( index ); |
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110 iRequestQueue.Compress(); |
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111 } |
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112 ActivatePendingRequests(); |
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113 } |
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114 |
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115 // ----------------------------------------------------------------------------- |
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116 // COutgoingRequestQueue::UsagePermissionChanged |
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117 // From MSocketUsagePermissionObserver |
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118 // ----------------------------------------------------------------------------- |
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119 // |
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120 void COutgoingRequestQueue::UsagePermissionChanged( |
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121 RSocket& aSocket, |
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122 TBool aPermissionToUse ) |
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123 { |
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124 TInt lastIndex( iRequestQueue.Count() - 1 ); |
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125 for ( TInt i = lastIndex; i >= 0; i-- ) |
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126 { |
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127 TOutgoingRequestQueueItem& item = iRequestQueue[ i ]; |
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128 if ( item.Match( aSocket ) ) |
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129 { |
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130 // May lead to removal of the item |
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131 HandleUsagePermissionChange( item, aPermissionToUse ); |
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132 } |
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133 } |
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134 ActivatePendingRequests(); |
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135 } |
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136 |
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137 // ----------------------------------------------------------------------------- |
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138 // COutgoingRequestQueue::NATTraverseL |
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139 // ----------------------------------------------------------------------------- |
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140 // |
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141 void COutgoingRequestQueue::NATTraverseL( |
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142 const TSIPTransportParams& aParams, |
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143 CSIPRequest& aRequest, |
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144 TBool aForceUDP, |
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145 const TInetAddr& aAddr, |
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146 const CUri8* aOutboundProxy, |
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147 TUint aOrigTransport, |
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148 TRequestStatus &aStatus, |
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149 const TInetAddr& aLocalAddr ) |
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150 { |
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151 HBufC8* localAddrBuf = CTransport::ConvertInetAddrToTextL( aLocalAddr ); |
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152 CleanupStack::PushL( localAddrBuf ); |
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153 TUint localPort = ContactPortL( aRequest, *localAddrBuf ); |
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154 CleanupStack::PopAndDestroy( localAddrBuf ); |
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155 |
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156 if ( aRequest.Method() == SIPStrings::StringF( SipStrConsts::ERegister ) && |
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157 aRequest.To()->HasParam( iStrNATTraversalRequired ) && |
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158 !aLocalAddr.IsUnspecified() ) //Nat Traversal for both IPv6 and IPv4 addresses. |
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159 { |
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160 RemoveNATTraversalParameter( aRequest ); |
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161 TBool permissionToUse( EFalse ); |
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162 iLocalAddr = aLocalAddr; |
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163 RSocket& udpSocket = iContext.GetUdpSocketL( aParams, |
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164 aAddr, |
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165 localPort, |
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166 this, |
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167 permissionToUse ); |
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168 |
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169 TOutgoingRequestQueueItem queueItem( aParams, |
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170 aRequest, |
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171 aForceUDP, |
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172 aAddr, |
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173 localPort, |
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174 aOutboundProxy, |
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175 aOrigTransport, |
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176 aStatus, |
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177 udpSocket, |
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178 permissionToUse ); |
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179 |
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180 // If there's already active request for this particular UDP socket, |
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181 // request cannot be activated before existing request has completed. |
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182 if ( permissionToUse && !HasRequestForSocket( udpSocket, EFalse ) ) |
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183 { |
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184 IssueRequestL( queueItem ); |
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185 } |
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186 |
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187 iRequestQueue.AppendL( queueItem ); |
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188 |
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189 // Request status has to be set to pending before going to async. |
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190 // Set it when this synchronous execution path cannot leave anymore. |
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191 aStatus = KRequestPending; |
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192 } |
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193 else |
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194 { |
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195 iNATTraversal.UpdateNextHop( |
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196 aAddr, |
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197 const_cast<TSIPTransportParams&>( aParams ).NATBindingObserver() ); |
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198 |
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199 iContext.ContinueSendToTransportL( aParams, |
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200 aRequest, |
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201 aForceUDP, |
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202 aAddr, |
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203 localPort, |
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204 aOrigTransport, |
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205 aStatus, |
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206 EFalse ); |
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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 // COutgoingRequestQueue::FreeResources |
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212 // ----------------------------------------------------------------------------- |
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213 // |
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214 void COutgoingRequestQueue::FreeResources( |
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215 MSIPNATBindingObserver& aSIPNATBindingObserver ) |
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216 { |
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217 iNATTraversal.FreeResources( aSIPNATBindingObserver ); |
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218 } |
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219 |
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220 // ----------------------------------------------------------------------------- |
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221 // COutgoingRequestQueue::CancelSend |
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222 // ----------------------------------------------------------------------------- |
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223 // |
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224 TBool COutgoingRequestQueue::CancelSend( TRequestStatus& aStatus ) |
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225 { |
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226 for ( TInt i = 0; i < iRequestQueue.Count(); i++ ) |
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227 { |
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228 TOutgoingRequestQueueItem& item = iRequestQueue[ i ]; |
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229 if ( item.Match( aStatus ) ) |
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230 { |
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231 iNATTraversal.Cancel( item.RequestId() ); |
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232 Complete( item, KErrSIPTransportFailure, EFalse ); |
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233 iRequestQueue.Remove( i ); |
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234 iRequestQueue.Compress(); |
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235 return ETrue; |
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236 } |
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237 } |
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238 return EFalse; |
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239 } |
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240 |
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241 // ----------------------------------------------------------------------------- |
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242 // COutgoingRequestQueue::Update |
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243 // ----------------------------------------------------------------------------- |
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244 // |
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245 void COutgoingRequestQueue::Update( |
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246 TOutgoingRequestQueueItem& aItem, |
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247 const TInetAddr& aPublicAddr ) |
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248 { |
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249 TRAPD( err, UpdateHeadersL( aItem, iLocalAddr, aPublicAddr ) ); |
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250 Complete( aItem, err, ETrue ); |
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251 } |
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252 |
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253 // ----------------------------------------------------------------------------- |
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254 // COutgoingRequestQueue::Complete |
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255 // ----------------------------------------------------------------------------- |
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256 // |
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257 void COutgoingRequestQueue::Complete( |
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258 TOutgoingRequestQueueItem& aItem, |
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259 TInt aCompletionCode, |
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260 TBool aPublicAddrResolved ) |
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261 { |
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262 if ( !HasRequestForSocket( aItem.Socket(), ETrue ) ) |
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263 { |
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264 // Notify if no pending requests exists for the socket |
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265 iContext.UdpSocketFree( aItem.Params(), |
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266 aItem.Addr(), |
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267 aItem.LocalPort(), |
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268 this, |
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269 aItem.Socket() ); |
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270 } |
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271 |
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272 if ( !aCompletionCode ) |
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273 { |
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274 TRAP( aCompletionCode, |
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275 iContext.ContinueSendToTransportL( aItem.Params(), |
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276 aItem.Request(), |
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277 aItem.ForceUDP(), |
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278 aItem.Addr(), |
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279 aItem.LocalPort(), |
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280 aItem.OrigTransport(), |
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281 aItem.Status(), |
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282 aPublicAddrResolved ) ); |
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283 } |
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284 |
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285 if ( aCompletionCode ) |
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286 { |
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287 iContext.RequestFailed( aItem.Status(), aCompletionCode ); |
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288 } |
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289 } |
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290 |
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291 // ----------------------------------------------------------------------------- |
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292 // COutgoingRequestQueue::UpdateHeadersL |
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293 // ----------------------------------------------------------------------------- |
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294 // |
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295 void COutgoingRequestQueue::UpdateHeadersL( |
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296 TOutgoingRequestQueueItem& aItem, |
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297 const TInetAddr& aLocalAddr, |
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298 const TInetAddr& aPublicAddr ) |
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299 { |
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300 // Some NAT-aware proxies/registrars detect from the private IP address |
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301 // that the UA is behind a NAT and maintain a persistent TCP-connection. |
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302 // If the public address is used with TCP, |
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303 // these proxies/registrars will not maintain persistent TCP-connection. |
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304 if ( aItem.OrigTransport() == KProtocolInetUdp ) |
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305 { |
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306 HBufC8* localAddrBuf = |
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307 CTransport::ConvertInetAddrToTextL( aLocalAddr ); |
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308 CleanupStack::PushL( localAddrBuf ); |
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309 |
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310 HBufC8* publicAddrBuf = |
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311 CTransport::ConvertInetAddrToTextL( aPublicAddr ); |
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312 CleanupStack::PushL( publicAddrBuf ); |
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313 |
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314 TUint publicPort( aPublicAddr.Port() ); |
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315 |
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316 UpdateContactHeaderL( aItem.Request(), *localAddrBuf, |
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317 *publicAddrBuf, publicPort ); |
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318 |
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319 UpdateViaHeaderL( aItem.Request(), *publicAddrBuf, publicPort ); |
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320 |
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321 CleanupStack::PopAndDestroy( publicAddrBuf ); |
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322 CleanupStack::PopAndDestroy( localAddrBuf ); |
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323 } |
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324 } |
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325 |
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326 // ----------------------------------------------------------------------------- |
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327 // COutgoingRequestQueue::UpdateContactHeaderL |
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328 // ----------------------------------------------------------------------------- |
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329 // |
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330 void COutgoingRequestQueue::UpdateContactHeaderL( |
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331 CSIPMessage& aMessage, |
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332 const TDesC8& aLocalAddr, |
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333 const TDesC8& aPublicAddr, |
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334 TUint aPublicPort ) |
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335 { |
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336 if ( aMessage.HasHeader( |
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337 SIPStrings::StringF(SipStrConsts::EContactHeader) ) ) |
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338 { |
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339 TSglQueIter<CSIPHeaderBase> iter = |
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340 aMessage.Headers( |
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341 SIPStrings::StringF(SipStrConsts::EContactHeader) ); |
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342 CSIPHeaderBase* header = 0; |
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343 while ( ( header = iter++ ) != 0 ) |
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344 { |
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345 CSIPContactHeader* contact = |
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346 static_cast<CSIPContactHeader*>( header ); |
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347 CSIPAddress* sipAddr = contact->SIPAddress(); |
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348 |
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349 if ( sipAddr ) |
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350 { |
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351 CURIContainer& uriContainer = sipAddr->URI(); |
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352 if ( uriContainer.IsSIPURI() && |
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353 uriContainer.SIPURI()->HostPort().Host().Compare( |
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354 aLocalAddr ) == 0 ) |
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355 { |
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356 uriContainer.SIPURI()->HostPort().SetHostL( aPublicAddr ); |
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357 uriContainer.SIPURI()->HostPort().SetPort( aPublicPort ); |
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358 } |
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359 } |
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360 } |
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361 } |
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362 } |
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363 |
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364 // ----------------------------------------------------------------------------- |
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365 // COutgoingRequestQueue::UpdateViaHeaderL |
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366 // ----------------------------------------------------------------------------- |
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367 // |
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368 void COutgoingRequestQueue::UpdateViaHeaderL( |
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369 CSIPMessage& aMessage, |
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370 const TDesC8& aPublicAddr, |
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371 TUint aPublicPort ) |
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372 { |
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373 CSIPViaHeader* via = CTransport::TopViaHeader( &aMessage ); |
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374 if ( via ) |
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375 { |
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376 via->SentByHostPort().SetHostL( aPublicAddr ); |
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377 via->SentByHostPort().SetPort( aPublicPort ); |
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378 } |
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379 } |
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380 |
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381 // ----------------------------------------------------------------------------- |
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382 // COutgoingRequestQueue::HandleUsagePermissionChange |
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383 // ----------------------------------------------------------------------------- |
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384 // |
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385 void COutgoingRequestQueue::HandleUsagePermissionChange( |
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386 TOutgoingRequestQueueItem& aItem, |
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387 TBool aPermissionToUse ) |
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388 { |
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389 aItem.SetPermissionToUse( aPermissionToUse ); |
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390 |
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391 if ( !aPermissionToUse && aItem.IsActiveRequest() ) |
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392 { |
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393 CancelSend( aItem.Status() ); |
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394 } |
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395 } |
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396 |
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397 // ----------------------------------------------------------------------------- |
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398 // COutgoingRequestQueue::HasRequestForSocket |
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399 // ----------------------------------------------------------------------------- |
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400 // |
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401 TBool COutgoingRequestQueue::HasRequestForSocket( |
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402 RSocket& aSocket, |
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403 TBool aFindPendingRequest ) |
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404 { |
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405 for ( TInt i = 0; i < iRequestQueue.Count(); i++ ) |
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406 { |
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407 TOutgoingRequestQueueItem& item = iRequestQueue[ i ]; |
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408 if ( item.Match( aSocket ) && |
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409 !item.IsFailed() && |
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410 ( item.IsActiveRequest() ^ aFindPendingRequest ) ) |
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411 { |
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412 return ETrue; |
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413 } |
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414 } |
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415 return EFalse; |
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416 } |
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417 |
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418 // ----------------------------------------------------------------------------- |
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419 // COutgoingRequestQueue::CleanupFailedRequests |
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420 // ----------------------------------------------------------------------------- |
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421 // |
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422 void COutgoingRequestQueue::CleanupFailedRequests() |
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423 { |
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424 TInt lastIndex( iRequestQueue.Count() - 1 ); |
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425 for ( TInt i = lastIndex; i >= 0; i-- ) |
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426 { |
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427 TOutgoingRequestQueueItem& item = iRequestQueue[ i ]; |
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428 if ( item.IsFailed() ) |
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429 { |
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430 iContext.RequestFailed( item.Status(), item.Error() ); |
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431 iRequestQueue.Remove( i ); |
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432 iRequestQueue.Compress(); |
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433 } |
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434 } |
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435 } |
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436 |
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437 // ----------------------------------------------------------------------------- |
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438 // COutgoingRequestQueue::ActivatePendingRequests |
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439 // ----------------------------------------------------------------------------- |
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440 // |
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441 void COutgoingRequestQueue::ActivatePendingRequests() |
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442 { |
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443 for ( TInt i = 0; i < iRequestQueue.Count(); i++ ) |
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444 { |
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445 TOutgoingRequestQueueItem& item = iRequestQueue[ i ]; |
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446 |
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447 // Activate if there's no other active request for the socket |
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448 // this pending request uses. |
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449 if ( !item.IsActiveRequest() && |
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450 !HasRequestForSocket( item.Socket(), EFalse ) && |
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451 item.PermissionToUse() ) |
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452 { |
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453 TRAPD( err, IssueRequestL( item ) ); |
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454 item.SetFailed( err ); |
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455 if ( err && !HasRequestForSocket( item.Socket(), ETrue ) ) |
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456 { |
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457 // If no more pending requests, inform that socket is free |
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458 iContext.UdpSocketFree( item.Params(), |
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459 item.Addr(), |
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460 item.LocalPort(), |
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461 this, |
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462 item.Socket() ); |
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463 } |
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464 } |
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465 } |
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466 CleanupFailedRequests(); |
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467 } |
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468 |
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469 // ----------------------------------------------------------------------------- |
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470 // COutgoingRequestQueue::IssueRequestL |
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471 // ----------------------------------------------------------------------------- |
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472 // |
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473 void COutgoingRequestQueue::IssueRequestL( TOutgoingRequestQueueItem& aItem ) |
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474 { |
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475 __ASSERT_ALWAYS( !HasRequestForSocket( aItem.Socket(), EFalse ), |
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476 User::Leave( KErrInUse ) ); |
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477 |
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478 TPtrC8 domain( KNullDesC8 ); |
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479 CSIPURI* toSIPURI = aItem.Request().To()->SIPAddress().URI().SIPURI(); |
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480 if ( toSIPURI ) |
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481 { |
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482 domain.Set( toSIPURI->HostPort().Host() ); |
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483 } |
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484 |
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485 // Have to do const cast for transport params to get binding observer |
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486 TUint32 requestId = iNATTraversal.ResolvePublicAddrL( |
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487 iIapId, |
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488 iConnection, |
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489 iLocalAddr, |
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490 domain, |
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491 aItem.Socket(), |
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492 aItem.Addr(), |
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493 const_cast<TSIPTransportParams&>( aItem.Params() ).NATBindingObserver(), |
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494 *this ); |
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495 |
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496 aItem.SetRequestId( requestId ); |
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497 aItem.SetFailed( KErrNone ); |
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498 } |
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499 |
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500 // ----------------------------------------------------------------------------- |
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501 // COutgoingRequestQueue::FindRequestQueueItemIndex |
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502 // ----------------------------------------------------------------------------- |
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503 // |
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504 TInt COutgoingRequestQueue::FindRequestQueueItemIndex( TUint32 aRequestId ) const |
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505 { |
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506 for ( TInt i = 0; i < iRequestQueue.Count(); i++ ) |
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507 { |
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508 if ( iRequestQueue[ i ].Match( aRequestId ) ) |
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509 { |
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510 return i; |
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511 } |
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512 } |
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513 return KErrNotFound; |
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514 } |
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515 |
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516 // ----------------------------------------------------------------------------- |
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517 // COutgoingRequestQueue::RemoveNATTraversalParameter |
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518 // ----------------------------------------------------------------------------- |
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519 // |
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520 void COutgoingRequestQueue::RemoveNATTraversalParameter( CSIPRequest& aRequest ) |
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521 { |
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522 CSIPToHeader* to = aRequest.To(); |
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523 if ( to ) |
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524 { |
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525 to->DeleteParam( iStrNATTraversalRequired ); |
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526 } |
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527 CSIPFromHeader* from = aRequest.From(); |
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528 if ( from ) |
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529 { |
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530 from->DeleteParam( iStrNATTraversalRequired ); |
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531 } |
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532 } |
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533 |
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534 // ----------------------------------------------------------------------------- |
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535 // COutgoingRequestQueue::ContactPortL |
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536 // ----------------------------------------------------------------------------- |
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537 // |
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538 TUint COutgoingRequestQueue::ContactPortL( |
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539 CSIPRequest& aRequest, |
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540 const TDesC8& aLocalAddr ) |
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541 { |
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542 if ( aRequest.HasHeader( |
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543 SIPStrings::StringF(SipStrConsts::EContactHeader) ) ) |
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544 { |
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545 TSglQueIter<CSIPHeaderBase> iter = |
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546 aRequest.Headers( |
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547 SIPStrings::StringF(SipStrConsts::EContactHeader) ); |
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548 CSIPHeaderBase* header = 0; |
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549 while ( ( header = iter++ ) != 0 ) |
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550 { |
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551 CSIPContactHeader* contact = |
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552 static_cast<CSIPContactHeader*>( header ); |
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553 CSIPAddress* sipAddr = contact->SIPAddress(); |
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554 |
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555 if ( sipAddr ) |
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556 { |
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557 CURIContainer& uriContainer = sipAddr->URI(); |
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558 if ( uriContainer.IsSIPURI() && |
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559 uriContainer.SIPURI()->HostPort().Host().Compare( |
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560 aLocalAddr ) == 0 && |
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561 uriContainer.SIPURI()->HostPort().HasPort() ) |
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562 { |
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563 return uriContainer.SIPURI()->HostPort().Port(); |
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564 } |
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565 } |
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566 } |
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567 } |
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568 return 0; |
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569 } |
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570 |
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571 // ----------------------------------------------------------------------------- |
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572 // COutgoingRequestQueue::ConvertToSIPURIRollBack |
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573 // ----------------------------------------------------------------------------- |
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574 // |
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575 void COutgoingRequestQueue::ConvertToSIPURIRollBack(TAny* /*aDummy*/) |
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576 { |
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577 SIPHeaderLookup::SetConvertToSIPURI(ETrue); |
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578 } |
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579 |
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580 // ----------------------------------------------------------------------------- |
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581 // COutgoingRequestQueue::ConstructL |
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582 // ----------------------------------------------------------------------------- |
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583 // |
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584 void COutgoingRequestQueue::ConstructL() |
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585 { |
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586 _LIT8( KNATTraversalRequired, "nat_traversal_required" ); |
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587 |
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588 iStrNATTraversalRequired = |
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589 SIPStrings::Pool().OpenFStringL( KNATTraversalRequired ); |
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590 } |
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591 |
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592 // ----------------------------------------------------------------------------- |
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593 // COutgoingRequestQueue::COutgoingRequestQueue |
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594 // ----------------------------------------------------------------------------- |
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595 // |
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596 COutgoingRequestQueue::COutgoingRequestQueue( |
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597 MOutgoingRequestQueueContext& aContext, |
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598 CSIPNATTraversalController& aNATTraversal, |
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599 RConnection& aConnection, |
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600 TUint32 aIapId ) : |
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601 iContext( aContext ), |
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602 iNATTraversal( aNATTraversal ), |
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603 iConnection( aConnection ), |
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604 iIapId( aIapId ), |
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605 iRequestQueue( KRequestQueueGranularity ) |
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606 { |
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607 } |
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608 |
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609 // End of file |