Packetized transport

docs/transports.md

@@ -48,13 +48,13 @@ be used to *summon* the transport:
   </tr>
   <tr>
     <td>        Serial                                                  </td>
-    <td><code>  serial://&lt;path-to-device&gt;?baud=&lt;baud&gt;       </code></td>
-    <td><code>  zcm_create("serial:///dev/ttyUSB0?baud=115200")         </code></td>
+    <td><code>  serial://&lt;path-to-device&gt;?baud=&lt;baud&gt;[&amp;pkt_size=&lt;n&gt;] </code></td>
+    <td><code>  zcm_create("serial:///dev/ttyUSB0?baud=115200"), zcm_create("serial:///dev/ttyUSB0?baud=115200&amp;pkt_size=128") </code></td>
   </tr>
   <tr>
     <td>        CAN                                                     </td>
-    <td><code>  can://&lt;interface&gt;?msgid=&lt;id&gt;                </code></td>
-    <td><code>  zcm_create("can://can0?msgid=65536")                    </code></td>
+    <td><code>  can://&lt;interface&gt;?msgid=&lt;id&gt;[&amp;pkt_size=&lt;n&gt;] </code></td>
+    <td><code>  zcm_create("can://can0?msgid=65536"), zcm_create("can://can0?msgid=65536&amp;pkt_size=32") </code></td>
   </tr>
   <tr>
     <td>        Inter-process via Shared Memory (IPCSHM)                </td>

test/run-tests.sh

@@ -38,7 +38,7 @@ echo "**********************************"
 $ROOTDIR/build/$BLD/test/runner
 echo "Success"
 
-if [ -n "$1" ]; then
+if [ -n "${1:-}" ]; then
     echo "Skipping non c/c++ lanugage tests in sanitizer mode"
     exit 0
 fi