<?xml version="1.0" encoding="UTF-8"?><rss xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:atom="http://www.w3.org/2005/Atom" version="2.0"><channel><title><![CDATA[Segmented Answer -&gt; Timeout while waiting for APDU id]]></title><description><![CDATA[<p dir="auto">Hello,</p>
<p dir="auto">i am struggling with sending segmented answers:</p>
<p dir="auto">I implemented a "virtual" local device with some objects and testing it with various test-clients like "BrightCore BACnet Lookout" or "WAGO BACnet Configurator".</p>
<p dir="auto">Everything is fine until I have around 300 BacNetObjects so that the answer to this request ```<br />
Confirmed-REQ   readProperty[  1] device,1234 object-list</p>
<pre><code>has to be segmented. BACnet4J sends back the first segment ```
Complex-ACK     readProperty[  1]  (Message fragment 0)
``` and wait for an ACK, which
is visible in wireshark (```
Segment-ACK
```), but not recognized by BACnet4J.

After 3 retries i got a timeout  :cry: 

i am debugging in eclipse alot, but i cant figure out why the Segment-ACK-Answer from my client is ignored.

Any suggestions?

Thank you!</code></pre>
]]></description><link>https://forum.mango-os.com/topic/1552/segmented-answer-timeout-while-waiting-for-apdu-id</link><generator>RSS for Node</generator><lastBuildDate>Sun, 19 Apr 2026 11:19:04 GMT</lastBuildDate><atom:link href="https://forum.mango-os.com/topic/1552.rss" rel="self" type="application/rss+xml"/><pubDate>Tue, 20 May 2014 17:43:53 GMT</pubDate><ttl>60</ttl></channel></rss>