|
1 /* |
|
2 * Copyright (c) 2005 Nokia Corporation and/or its subsidiary(-ies). |
|
3 * All rights reserved. |
|
4 * This component and the accompanying materials are made available |
|
5 * under the terms of "Eclipse Public License v1.0" |
|
6 * which accompanies this distribution, and is available |
|
7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
|
8 * |
|
9 * Initial Contributors: |
|
10 * Nokia Corporation - initial contribution. |
|
11 * |
|
12 * Contributors: |
|
13 * |
|
14 * Description: |
|
15 * |
|
16 */ |
|
17 |
|
18 |
|
19 |
|
20 #include "mcenatstatecreateanswer.h" |
|
21 #include "mcenatsipsession.h" |
|
22 #include "mcenatactions.h" |
|
23 #include "mcenatevents.h" |
|
24 #include "mceactionset.h" |
|
25 #include "mceclientserver.h" |
|
26 #include "mcesrvlogs.h" |
|
27 #include "nspplugin.h" |
|
28 |
|
29 // ----------------------------------------------------------------------------- |
|
30 // CMceNatStateCreateAnswer::CMceNatStateCreateAnswer |
|
31 // ----------------------------------------------------------------------------- |
|
32 // |
|
33 CMceNatStateCreateAnswer::CMceNatStateCreateAnswer() |
|
34 { |
|
35 } |
|
36 |
|
37 // ----------------------------------------------------------------------------- |
|
38 // CMceNatStateCreateAnswer::~CMceNatStateCreateAnswer |
|
39 // ----------------------------------------------------------------------------- |
|
40 // |
|
41 CMceNatStateCreateAnswer::~CMceNatStateCreateAnswer() |
|
42 { |
|
43 } |
|
44 |
|
45 // ----------------------------------------------------------------------------- |
|
46 // CMceNatStateCreateAnswer::Accept |
|
47 // ----------------------------------------------------------------------------- |
|
48 // |
|
49 TBool CMceNatStateCreateAnswer::Accept( TMceNatStateTransitionEvent& aEvent ) |
|
50 { |
|
51 if ( EMceNatAnswer == aEvent.NatCode() || |
|
52 ( EMceNatHandleSIP == aEvent.NatCode() && |
|
53 EMceInvite == aEvent.Code() )|| |
|
54 EMceNatError == aEvent.NatCode() || |
|
55 EMceNatICMPError == aEvent.NatCode() ) |
|
56 { |
|
57 return ETrue; |
|
58 } |
|
59 else |
|
60 { |
|
61 return EFalse; |
|
62 } |
|
63 } |
|
64 |
|
65 // ----------------------------------------------------------------------------- |
|
66 // CMceNatStateCreateAnswer::EntryL |
|
67 // ----------------------------------------------------------------------------- |
|
68 // |
|
69 void CMceNatStateCreateAnswer::EntryL( TMceNatStateTransitionEvent& aEvent ) |
|
70 { |
|
71 MCESRV_DEBUG( "*** CMceNatStateCreateAnswer::EntryL, Entry" ); |
|
72 |
|
73 aEvent.Session().Actions().EncodeL(); |
|
74 TMceReturnStatus status = aEvent.NatActions().ResolveL(); |
|
75 |
|
76 if ( KMceReady == status ) |
|
77 { |
|
78 CMceSipSession& session = aEvent.Session(); |
|
79 |
|
80 aEvent.NatCode() = ( KMceReady == aEvent.ParamStatus() ? |
|
81 EMceNatSync : aEvent.NatCode() ); |
|
82 |
|
83 aEvent.NatActions().SetOffered( KMceNatPrevOfferSdp ); |
|
84 session.Actions().DecodeL(); |
|
85 aEvent.NatActions().UpdateRemoteAddressL(); |
|
86 |
|
87 CSdpDocument* previous = session.Offer(); |
|
88 aEvent.NatActions().SetOffered( KMceNatOfferSdp ); |
|
89 aEvent.NatActions().SdpCleanup( previous, session.Offer() ); |
|
90 |
|
91 aEvent.NatActions().StateChangedL( aEvent, KMceNatStateConnected ); |
|
92 |
|
93 } |
|
94 else |
|
95 { |
|
96 aEvent.ParamStatus() = status; |
|
97 } |
|
98 |
|
99 MCESRV_DEBUG( "*** CMceNatStateCreateAnswer::EntryL, Exit" ); |
|
100 } |
|
101 |
|
102 // ----------------------------------------------------------------------------- |
|
103 // CMceNatStateCreateAnswer::ExitL |
|
104 // ----------------------------------------------------------------------------- |
|
105 // |
|
106 void CMceNatStateCreateAnswer::ExitL( TMceNatStateTransitionEvent& aEvent ) |
|
107 { |
|
108 MCESRV_DEBUG( "*** CMceNatStateCreateAnswer::ExitL, Entry" ); |
|
109 |
|
110 switch ( aEvent.NatCode() ) |
|
111 { |
|
112 case EMceNatError: |
|
113 case EMceNatICMPError: |
|
114 { |
|
115 ExitErrorL( aEvent ); |
|
116 break; |
|
117 } |
|
118 case EMceNatHandleSIP: |
|
119 { |
|
120 ExitHandleInviteL( aEvent ); |
|
121 break; |
|
122 } |
|
123 default: |
|
124 { |
|
125 ExitDefaultL( aEvent ); |
|
126 break; |
|
127 } |
|
128 } |
|
129 |
|
130 MCESRV_DEBUG( "*** CMceNatStateCreateAnswer::ExitL, Exit" ); |
|
131 } |
|
132 |
|
133 // ----------------------------------------------------------------------------- |
|
134 // CMceNatStateCreateAnswer::ExitErrorL |
|
135 // ----------------------------------------------------------------------------- |
|
136 // |
|
137 void CMceNatStateCreateAnswer::ExitErrorL( TMceNatStateTransitionEvent& aEvent ) |
|
138 { |
|
139 |
|
140 TMceStateIndex sipState = aEvent.Session().CurrentState().Id(); |
|
141 |
|
142 if ( aEvent.ParamStatus() > KMceNatNonFatalErrorLimit ) |
|
143 { |
|
144 aEvent.Session().Actions().ClientErrorOccured( aEvent.ParamStatus() ); |
|
145 } |
|
146 |
|
147 |
|
148 if (( aEvent.NatCode() == EMceNatICMPError && |
|
149 KMceStateEstablished == sipState ) || |
|
150 aEvent.NatCode() == EMceNatError ) |
|
151 { |
|
152 aEvent.NatActions().Continue(); |
|
153 User::Leave( aEvent.ParamStatus() ); |
|
154 } |
|
155 |
|
156 } |
|
157 |
|
158 // ----------------------------------------------------------------------------- |
|
159 // CMceNatStateCreateAnswer::ExitHandleInviteL |
|
160 // ----------------------------------------------------------------------------- |
|
161 // |
|
162 void CMceNatStateCreateAnswer::ExitHandleInviteL( TMceNatStateTransitionEvent& aEvent ) |
|
163 { |
|
164 CMceSipSession& session = aEvent.Session(); |
|
165 |
|
166 if ( MceSip::HasContent( session.Request() ) ) |
|
167 { |
|
168 // Incoming INVITE contained new SDP, which can contain new candidates, |
|
169 // hence it is given to NAT FW - without state update. |
|
170 User::LeaveIfError( session.Actions().CreateSDP( session.Request() ) ); |
|
171 aEvent.NatActions().UpdateL(); |
|
172 } |
|
173 |
|
174 // Not consumed, done by SIP state machine |
|
175 aEvent.NatActions().Continue(); |
|
176 } |
|
177 |
|
178 // ----------------------------------------------------------------------------- |
|
179 // CMceNatStateCreateAnswer::ExitDefaultL |
|
180 // ----------------------------------------------------------------------------- |
|
181 // |
|
182 void CMceNatStateCreateAnswer::ExitDefaultL( TMceNatStateTransitionEvent& aEvent ) |
|
183 { |
|
184 |
|
185 // Check if plugin has flag setup if yes signall that at the session level. |
|
186 TInt status = aEvent.NatActions().GetResourceReservationStatus(); |
|
187 |
|
188 if ( status == CNSPPlugin::ENSPResourcesNotReserved ) |
|
189 { |
|
190 aEvent.NatActions().SetNeedtoReceive(); |
|
191 } |
|
192 |
|
193 User::LeaveIfNull( aEvent.Document() ); |
|
194 CMceSipSession& session = aEvent.Session(); |
|
195 |
|
196 CSdpDocument* previous = session.Offer(); |
|
197 aEvent.Session().SetOffer( aEvent.Document() ); |
|
198 aEvent.NatActions().SetOffered( KMceNatOfferSdp ); |
|
199 aEvent.NatActions().SdpCleanup( previous, session.Offer() ); |
|
200 |
|
201 aEvent.NatActions().StateChangedL( aEvent, KMceNatStateDecodeOffer ); |
|
202 } |