sms: Add a very basic test for MO-SMS error paths.
Start with the SMS instead of the CM Service Request. This ends up having the lchan open forever in current osmo-nitb HEAD. Add a second test that sends a wrong PDU and doesn't answer the CP-DATA with an CP-ACK. The nitb code does not crash and will eventually take down the channel.
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"
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(C) 2012 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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PackageLoader fileInPackage: #FakeBTS.
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FakeBTS.OpenBSCTest subclass: SMSTest [
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<import: OsmoGSM>
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SMSTest class >> cpDataRpData [
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^ #(
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16r09 16r01 16r35 16r01 16r2A 16r07 16r91 16r44
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16r77 16r58 16r10 16r06 16r50 16r00 16r2B 16r04
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16r04 16r81 16r32 16r24 16r00 16r00 16r80 16r21
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16r03 16r41 16r24 16r32 16r40 16r1F 16r41 16r26
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16r03 16r94 16r7D 16r56 16rA5 16r20 16r28 16rF2
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16rE9 16r2C 16r82 16r82 16rD2 16r22 16r48 16r58
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16r64 16r3E 16r9D 16r47 16r10 16rF5 16r09 16rAA
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16r4E 16r01) asByteArray.
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]
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startTest [
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"1. Connect to the BTS"
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self createAndConnectBTS: '1801/0/0'.
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self
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testWrongSMSStart;
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testCPTimeout.
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]
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testWrongSMSStart [
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| lchan |
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"2. Get a LCHAN"
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lchan := self requireAnyChannel.
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"3. CP-DATA/RP-DATA PDU"
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lchan sendGSM: self class cpDataRpData sapi: 3.
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[
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| msg |
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"Read all messages until the end on SAPI=0. Ignore SAPI=3"
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"If we send another SAPI=3 Release Indication we get a double
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RF Channel Release from the NITB."
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msg := GSM48MSG decode: lchan nextSapi0Msg readStream.
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(msg isKindOf: GSM48RRChannelRelease)
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ifTrue: [lchan releaseAllSapis. ^true].
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] repeat.
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"Current origin/master will be stuck forever here."
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]
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testCPTimeout [
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| lchan cm tmsi |
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tmsi := self allocateTmsi: '901010000001111'.
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"2. Get a LCHAN"
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lchan := self requireAnyChannel.
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"3. Send a CM Service Request "
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cm := GSM48CMServiceReq new.
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cm mi tmsi: tmsi.
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lchan sendGSM: cm toMessage.
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"4. CP-DATA/RP-DATA PDU"
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lchan sendGSM: self class cpDataRpData sapi: 3.
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"Wait for the channel to be released.."
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[
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| msg |
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"Read all messages until the end on SAPI=0. Ignore SAPI=3"
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"If we send another SAPI=3 Release Indication we get a double
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RF Channel Release from the NITB."
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[
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msg := GSM48MSG decode: lchan nextSapi0Msg readStream.
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(msg isKindOf: GSM48RRChannelRelease)
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ifTrue: [lchan releaseAllSapis. ^true]
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] on: Exception do: [Transcript nextPutAll: 'GSM decoding error'; nl.].
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] repeat.
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]
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]
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Eval [
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| test |
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test := SMSTest new
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startTest;
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stopBts;
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yourself.
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]
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