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"
(C) 2011 by Holger Hans Peter Freyther
All Rights Reserved
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
"
Object subclass: SIPSessionBase [
| rem ua identity initial_dialog dialog next_cseq |
<category: 'OsmoSIP-Callagent'>
<comment: 'I am the base for sessions. I am a bit backward as the
Dialog will create/hold the session but we start with the session here
as this is what we are really interested in. So this is not really a
session as of the RFC... but at some stage in the exchange we will be
a proper session.'>
SIPSessionBase class >> on: aDialog useragent: aUseragent [
<category: 'creation'>
^ self new
useragent: aUseragent;
identity: aUseragent mainIdentity;
initialDialog: aDialog;
yourself
]
initialDialog: aDialog [
<category: 'creation'>
initial_dialog := aDialog.
initial_dialog contact: ('sip:<1s>@<2p>:<3p>'
expandMacrosWith: identity username with: ua transport address with: ua transport port).
]
useragent: aUseragent [
<category: 'creation'>
ua := aUseragent
]
identity: anIdentity [
<category: 'creation'>
identity := anIdentity
]
callId [
<category: 'info'>
^ initial_dialog callId
]
check: aDialog [
<category: 'private'>
"I check if this enters a new confirmed dialog or if this is the
confirmed dialog."
"We have no confirmed dialog, accept it"
^ dialog isNil
ifTrue: [
aDialog isConfirmed ifTrue: [
dialog := aDialog.
self registerDialog.
self logNotice: ('SIPCall(<1s>) dialog is confirmed now.'
expandMacrosWith: self callId) area: #sip.
].
true]
ifFalse: [
"We could fork things here. For multi party call"
dialog to_tag = aDialog to_tag].
]
registerDialog [
<category: 'session'>
ua registerDialog: self.
]
unregisterDialog [
<category: 'session'>
rem isNil ifTrue: [
rem := Osmo.TimerScheduler instance
scheduleInSeconds: 60 block: [
ua unregisterDialog: self.
]]
]
nextCSeq [
| res |
<category: 'accessing'>
res := next_cseq.
next_cseq := next_cseq + 1.
^ res
]
isCompatible: aDialog [
<category: 'dialog'>
^ dialog isNil
ifTrue: [initial_dialog isCompatible: aDialog]
ifFalse: [dialog isCompatible: aDialog].
]
newRequest: aRequest dialog: aDialog [
<category: 'dialog'>
self logError: ('<1p>(<2s>) unhandled request <3p>.'
expandMacrosWithArguments: {self class. self callId. aRequest class verb})
area: #sip.
]
]
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