1 #

     2 #    Copyright 2007 Intel Corporation

     3 # 

     4 #    Licensed under the Apache License, Version 2.0 (the "License");

     5 #    you may not use this file except in compliance with the License.

     6 #    You may obtain a copy of the License at

     7 # 

     8 #        http://www.apache.org/licenses/LICENSE-2.0

     9 # 

    10 #    Unless required by applicable law or agreed to in writing, software

    11 #    distributed under the License is distributed on an "AS IS" BASIS,

    12 #    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

    13 #    See the License for the specific language governing permissions and

    14 #    limitations under the License.

    15 #

    16 

    17 test::name reroute-from-down-link

    18 net::num_nodes 2

    19 

    20 set testopt(cl)       tcp

    21 set testopt(downtime) 2

    22 run::parse_test_opts

    23 

    24 set cl $testopt(cl)

    25 

    26 dtn::config

    27 dtn::config_interface $cl

    28 

    29 dtn::config_linear_topology ALWAYSON $cl false

    30 

    31 test::script {

    32     testlog "running dtnds"

    33     dtn::run_dtnd *

    34 

    35     testlog "waiting for dtnds to start up"

    36     dtn::wait_for_dtnd *

    37 

    38     set source    dtn://host-0/test

    39     set dest      dtn://host-1/test

    40 

    41     dtn::tell_dtnd 1 tcl_registration $dest

    42 

    43     testlog "waiting for links to establish"

    44     dtn::wait_for_link_state 0 null OPEN

    45     dtn::wait_for_link_state 0 $cl-link:0-1 OPEN

    46 

    47     testlog "adding a higher priority route to the null link"

    48     dtn::tell_dtnd 0 route add $dest null route_priority=100

    49 

    50     testlog "reconfiguring null link to not send bundles"

    51     dtn::tell_dtnd 0 link reconfigure null \

    52             can_transmit=false potential_downtime=$testopt(downtime)

    53 

    54     testlog "sending a couple bundles"

    55     set timestamp1 [dtn::tell_dtnd 0 sendbundle $source $dest]

    56     set timestamp2 [dtn::tell_dtnd 0 sendbundle $source $dest]

    57     set timestamp3 [dtn::tell_dtnd 0 sendbundle $source $dest]

    58 

    59     testlog "checking that bundles are queued on null link"

    60     dtn::wait_for_bundle_stats 0 {3 pending 0 transmitted}

    61     dtn::wait_for_link_stats 0 null {3 bundles_queued 0 bundles_transmitted}

    62     dtn::check_link_stats 0 $cl-link:0-1 {0 bundles_queued 0 bundles_transmitted}

    63 

    64     testlog "removing the route from the null link, checking bundles are still queued"

    65     dtn::tell_dtnd 0 route del $dest

    66     dtn::tell_dtnd 0 route add $dest $cl-link:0-1

    67     dtn::check_bundle_stats 0 {3 pending 0 transmitted}

    68     dtn::check_link_stats 0 null {3 bundles_queued 0 bundles_transmitted}

    69     dtn::check_link_stats 0 $cl-link:0-1 {0 bundles_queued 0 bundles_transmitted}

    70 

    71     testlog "closing null link, checking that bundles are still queued"

    72     dtn::tell_dtnd 0 link close null

    73     dtn::wait_for_link_state 0 null UNAVAILABLE

    74     dtn::wait_for_bundle_stats 0 {3 pending 0 transmitted}

    75     dtn::check_link_stats 0 null {3 bundles_queued}

    76 

    77     testlog "waiting for reroute timer to expire"

    78     after [expr $testopt(downtime) * 1000]

    79 

    80     testlog "checking that bundles were rerouted and sent"

    81     dtn::wait_for_link_stats 0 null         {0 bundles_queued 3 bundles_cancelled}

    82     dtn::wait_for_link_stats 0 $cl-link:0-1 {3 bundles_transmitted}

    83 

    84     testlog "checking bundle stats"

    85     dtn::wait_for_bundle_stats 0 {0 pending 3 transmitted}

    86     dtn::wait_for_bundle_stats 1 {0 pending 3 received 3 delivered}

    87 

    88     # XXX/demmer add a test in which the null link comes back

    89 }

    90 

    91 test::exit_script {

    92     testlog "stopping all dtnds"

    93     dtn::stop_dtnd *

    94 }