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1 /* |
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2 * Copyright (c) 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: |
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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 <e32math.h> |
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20 #include "natfwstunbinding.h" |
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21 #include "cnatbindingstunrefresher.h" |
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22 #include "cnatbinding.h" |
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23 |
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24 const TInt KRefreshBaseValue = 900000; // microseconds |
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25 const TInt KRefreshVariationRange = 200000; // microseconds |
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26 |
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27 // ----------------------------------------------------------------------------- |
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28 // CNATBindingSTUNRefresher::CNATBindingSTUNRefresher |
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29 // ----------------------------------------------------------------------------- |
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30 // |
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31 CNATBindingSTUNRefresher::CNATBindingSTUNRefresher( |
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32 CDeltaTimer& aDeltaTimer, |
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33 TInt aRefreshInterval, |
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34 MNATBindingRefresherObserver& aObserver, |
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35 CNATBinding& aNATBinding) |
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36 : CNATBindingRefresher(aDeltaTimer,aObserver), |
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37 iNATBinding(aNATBinding), |
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38 iRefreshInterval(aRefreshInterval) |
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39 { |
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40 TTime time; |
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41 time.HomeTime(); |
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42 iRandomSeed = time.Int64(); |
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43 } |
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44 |
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45 // ----------------------------------------------------------------------------- |
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46 // CNATBindingSTUNRefresher::~CNATBindingSTUNRefresher |
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47 // ----------------------------------------------------------------------------- |
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48 // |
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49 CNATBindingSTUNRefresher::~CNATBindingSTUNRefresher() |
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50 { |
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51 CSTUNBinding* stunBinding = iNATBinding.Binding(); |
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52 if (stunBinding) |
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53 { |
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54 stunBinding->CancelRequest(); |
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55 } |
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56 } |
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57 |
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58 // ----------------------------------------------------------------------------- |
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59 // CNATBindingSTUNRefresher::HasSocket |
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60 // ----------------------------------------------------------------------------- |
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61 // |
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62 TBool CNATBindingSTUNRefresher::HasSocket(const RSocket& aSocket) const |
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63 { |
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64 CSTUNBinding* stunBinding = iNATBinding.Binding(); |
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65 return stunBinding && |
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66 (aSocket.SubSessionHandle() == |
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67 stunBinding->Socket().SubSessionHandle()); |
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68 } |
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69 |
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70 // ----------------------------------------------------------------------------- |
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71 // CNATBindingSTUNRefresher::RefreshInterval |
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72 // ----------------------------------------------------------------------------- |
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73 // |
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74 TInt CNATBindingSTUNRefresher::RefreshInterval() |
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75 { |
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76 TInt interval = KErrUnderflow; |
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77 if (iRefreshInterval > 0) |
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78 { |
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79 const TInt minValue = iRefreshInterval*KRefreshBaseValue; |
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80 const TInt variantPart = iRefreshInterval*KRefreshVariationRange; |
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81 const TInt rand = Math::Rand(iRandomSeed); |
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82 interval = (minValue+(rand%variantPart)); |
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83 } |
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84 return interval; |
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85 } |
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86 |
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87 // ----------------------------------------------------------------------------- |
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88 // CNATBindingSTUNRefresher::RefreshTimerExpiredL |
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89 // ----------------------------------------------------------------------------- |
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90 // |
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91 void CNATBindingSTUNRefresher::RefreshTimerExpiredL() |
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92 { |
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93 __ASSERT_ALWAYS(iNATBinding.Binding(), User::Leave(KErrNotFound)); |
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94 |
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95 iNATBinding.SendSTUNRequestL(); |
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96 } |
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97 |
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98 // ----------------------------------------------------------------------------- |
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99 // CNATBindingSTUNRefresher::CancelRefresh |
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100 // ----------------------------------------------------------------------------- |
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101 // |
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102 void CNATBindingSTUNRefresher::CancelRefresh() |
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103 { |
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104 CSTUNBinding* stunBinding = iNATBinding.Binding(); |
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105 if (stunBinding) |
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106 { |
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107 stunBinding->CancelRequest(); |
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108 } |
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109 } |