startAfterTime not working as expected

[beneuto]

I am storing the iothub annotations in my database with the data. To resume processing where it left of I am querying the database to get the latest enqueuedtime processed and setting this time as the startaftertime parameter. Something like the code below.

However when I run this, the last processed record is re-read from IoT Hub. I have also tried adding 1 millisecond to starttime and it still re-reads the last record. Through the process of elimination I found that adding 1930 milliseconds to starttime (iottime.getTime()+1930) is the point where the last processed record is no longer read.

var iottime = new Date(result.payload[0]["iothub-enqueuedtime"]);
var starttime = iottime.getTime();


... client.createReceiver('blah', partitionId, { 'startAfterTime': starttime }) ...

[beneuto]

Looks like the "x-opt-enqueued-time" property is what is required for this to work (not "iothub-enqueuedtime").