--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/alwayson-links.tcl	Thu Apr 21 14:57:45 2011 +0100
@@ -0,0 +1,113 @@
+#
+#    Copyright 2006 Intel Corporation
+# 
+#    Licensed under the Apache License, Version 2.0 (the "License");
+#    you may not use this file except in compliance with the License.
+#    You may obtain a copy of the License at
+# 
+#        http://www.apache.org/licenses/LICENSE-2.0
+# 
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS,
+#    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#    See the License for the specific language governing permissions and
+#    limitations under the License.
+#
+
+test::name tcp-alwayson-links
+net::num_nodes 3
+
+set cl tcp
+set link_opts ""
+
+for {set i 0} {$i < [llength $opt(opts)]} {incr i} {
+    set var [lindex $opt(opts) $i]
+    if {$var == "-cl" || $var == "cl"} {
+	set val [lindex $opt(opts) [incr i]]
+	set cl $val
+    } elseif {$var == "fast" || $var == "-fast_retries"} {
+	append link_opts " min_retry_interval=1 max_retry_interval=10 data_timeout=1000"
+    } else {
+	testlog error "ERROR: unrecognized test option '$var'"
+	exit 1
+    }
+}
+
+dtn::config
+dtn::config_interface $cl
+
+dtn::config_linear_topology ALWAYSON $cl true $link_opts
+
+test::script {
+    testlog "running dtnds"
+    dtn::run_dtnd *
+
+    testlog "waiting for dtnds to start up"
+    dtn::wait_for_dtnd *
+
+    set source    dtn://host-0/test
+    set dest      dtn://host-2/test
+
+    dtn::tell_dtnd 2 tcl_registration $dest
+
+    testlog "checking that link is open"
+    dtn::wait_for_link_state 0 $cl-link:0-1 OPEN
+
+    testlog "sending bundle"
+    set timestamp [dtn::tell_dtnd 0 sendbundle $source $dest]
+
+    testlog "waiting for bundle arrival"
+    dtn::wait_for_bundle 2 "$source,$timestamp" 5
+    
+    testlog "killing daemon 1"
+    dtn::stop_dtnd 1
+    
+    testlog "checking that link is unavailable"
+    dtn::wait_for_link_state 0 $cl-link:0-1 UNAVAILABLE
+
+    testlog "waiting for a few retry timers"
+    after 10000
+    
+    testlog "checking that link is still UNAVAILABLE"
+    dtn::wait_for_link_state 0 $cl-link:0-1 UNAVAILABLE
+    
+    testlog "restarting daemon 1"
+    dtn::run_dtnd 1
+    dtn::wait_for_dtnd 1
+    
+    testlog "checking that link is OPEN"
+    dtn::wait_for_link_state 0 $cl-link:0-1 OPEN
+
+    testlog "sending bundle"
+    set timestamp [dtn::tell_dtnd 0 sendbundle $source $dest]
+
+    testlog "waiting for bundle arrival"
+    dtn::wait_for_bundle 2 "$source,$timestamp" 5
+    
+    testlog "waiting for the idle timer, making sure the link is open"
+    after 10000
+    dtn::wait_for_link_state 0 $cl-link:0-1 OPEN
+
+    testlog "forcibly closing the link"
+    dtn::tell_dtnd 0 link close $cl-link:0-1
+    dtn::wait_for_link_state 0 $cl-link:0-1 UNAVAILABLE
+
+    testlog "sending another bundle, checking that the link stays closed"
+    set timestamp [dtn::tell_dtnd 0 sendbundle $source $dest]
+    after 2000
+    dtn::wait_for_link_state 0 $cl-link:0-1 UNAVAILABLE
+
+    testlog "forcibly re-opening the link"
+    dtn::tell_dtnd 0 link open $cl-link:0-1
+    dtn::wait_for_link_state 0 $cl-link:0-1 OPEN
+
+    testlog "waiting for bundle arrival"
+    dtn::wait_for_bundle 2 "$source,$timestamp" 5
+
+    testlog "test success!"
+}
+
+test::exit_script {
+    testlog "stopping all dtnds"
+    dtn::stop_dtnd *
+}