diff --git a/acatcher/.gitignore b/acatcher/.gitignore
index 4ea318b..9b9f658 100644
--- a/acatcher/.gitignore
+++ b/acatcher/.gitignore
@@ -1,2 +1,4 @@
 acatcher
 *.o
+HOSTS
+SERVERIP
diff --git a/acatcher/mkhosts b/acatcher/mkhosts
new file mode 100755
index 0000000..abd4795
--- /dev/null
+++ b/acatcher/mkhosts
@@ -0,0 +1,16 @@
+#!/bin/sh
+NUM=0
+while read FOO; do
+  if ! echo $FOO | grep -q ^#; then
+    HOST="`echo $FOO | cut -d\| -f3`"
+    IP="`echo $FOO | cut -d\| -f2`"
+    if ! echo $HOST | egrep -q "(server|spare)"; then
+      >&2 echo found host $HOST ip $IP num $NUM
+      echo "$HOST:$IP:$NUM"
+      NUM=$((NUM+1))
+    elif echo $HOST | grep -q server; then
+      >&2 echo found server at ip $IP
+      echo $IP > SERVERIP
+    fi
+  fi
+done < $HOME/Dropbox/CAMS > HOSTS
diff --git a/acatcher/stream.sh b/acatcher/stream.sh
index 20b42d0..43c7c09 100755
--- a/acatcher/stream.sh
+++ b/acatcher/stream.sh
@@ -1,11 +1,20 @@
 #!/bin/sh
 
-SERVERIP=192.168.24.20
-SESSION_ID="01"
+SERVERIP=`cat SERVERIP`
+HOSTNAME=`hostname`
+NUM=`grep ^$HOSTNAME: HOSTS | cut -d: -f3`
+if [ -z "$NUM" ]; then
+  echo "error: could not find host number for `hostname`!"
+  exit 1
+fi
+ASESSION=$((4000+NUM))
+VSESSION=$((4100+NUM))
+echo "i am $HOSTNAME machine $NUM asession $ASESSION vsession $VSESSION server at $SERVERIP"
+exit 1
 
 # different res is ok, MUST be mjpg
 v4l2-ctl --set-fmt-video=width=640,height=480,pixelformat=MJPG
 amixer -c 1 sset Mic,0 80%,80% unmute cap
 
-(while true; do arecord -t raw -c 1 -f S16_LE -r 22050 -D hw:1 | nc $SERVERIP 40$SESSION_ID; sleep 1; done) &
-while true; do ./v4lcap -o | nc $SERVERIP 41$SESSION_ID; sleep 1; done
+(while true; do arecord -t raw -c 1 -f S16_LE -r 22050 -D hw:1 | nc $SERVERIP $ASESSION; sleep 1; done) &
+while true; do ./v4lcap -o | nc $SERVERIP $VSESSION; sleep 1; done