2011-03-15 12:43:00 +00:00
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"
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(C) 2010-2011 by Holger Hans Peter Freyther
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All Rights Reserved
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as
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published by the Free Software Foundation, either version 3 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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"
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Object subclass: MGCPCommand [
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| verb transaction endp params sdp|
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2011-06-10 10:05:01 +00:00
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<comment: 'I am a command send to a MGCP gateway. I know my timeout
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and such. Each MGCPGateWay can have a MGCPCommand subclass to specify
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certain things. E.g. the endpoint numbering is different'>
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<category: 'MGCP-callagent'>
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2011-03-15 12:43:00 +00:00
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MGCPCommand class >> createCRCX: anEndpoint callId: aCallId transId: aTransId [
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<category: 'factory'>
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"I create a CRCX command for the given endpoint."
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^ (self new)
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initialize;
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verb: 'CRCX';
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transactionId: aTransId;
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endpoint: (self endpointNumberToName: anEndpoint);
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parameterAdd: 'M: recvonly';
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parameterAdd: 'C: ', aCallId;
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yourself
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]
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MGCPCommand class >> endpointNumberToName: aNumber [
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| hex |
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<category: 'format'>
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<comment: 'The IPA MGW assumes endpoint numbers in hex, lowercase'>
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hex := ((aNumber radix: 16) copyFrom: 4) asLowercase.
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^ hex, '@mgw'
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]
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initialize [
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sdp := OrderedCollection new.
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params := OrderedCollection new.
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]
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verb: aVerb [
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<category: 'private'>
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verb := aVerb.
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]
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endpoint: anEndpoint [
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<category: 'private'>
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endp := anEndpoint.
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]
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transactionId: anId [
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<category: 'private'>
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transaction := anId.
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]
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asDatagram [
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| end msg |
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<category: 'networking'>
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end := Character lf asString, Character nl asString.
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msg := verb, ' ', endp, ' MGCP 1.0', end
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]
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]
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