seisplotjs and ringserver4.0.1

[jinguman]

Hi,

I think ringserver4.0.1 does not send the MaximumPacketID attribute when seisplotjs calls infoStatus().
I got the error message as the follows,

Uncaught (in promise) Error: Attribute MaximumPacketID not found.
at Object._requireAttribute2 [as _requireAttribute] (seisplotjs_3.1.4_standalone.mjs:46332:11)
at _DataLinkStats.parseXMLAttributes (seisplotjs_3.1.4_standalone.mjs:64845:26)
at _StatusResponse.fromXML (seisplotjs_3.1.4_standalone.mjs:64959:35)
at _StatusResponse.fromDatalinkResponse (seisplotjs_3.1.4_standalone.mjs:64950:37)
at seisplotjs_3.1.4_standalone.mjs:64473:29

Also, There is no EarliestPacketDataEndTime attribute when I calls infoStreams().

seisplotjs_3.1.4_standalone.mjs:46332 Uncaught (in promise) Error: Attribute EarliestPacketDataEndTime not found.
at Object._requireAttribute2 [as _requireAttribute] (seisplotjs_3.1.4_standalone.mjs:46332:11)
at _StreamStat.parseXMLAttributes (seisplotjs_3.1.4_standalone.mjs:65006:19)
at seisplotjs_3.1.4_standalone.mjs:65090:32
at Array.map ()
at _StreamsResponse.fromXML (seisplotjs_3.1.4_standalone.mjs:65089:46)
at _StreamsResponse.fromDatalinkResponse (seisplotjs_3.1.4_standalone.mjs:65045:31)
at seisplotjs_3.1.4_standalone.mjs:64478:30

[crotwell]

I will add a workaround, but think this is a ringserver bug.

EarthScope/ringserver#72

[crotwell]

workaround push as 7e4c28d