Is there any size limit when I send message at one time using spark 2.6.3?

Spark Spark Support
1

I’m using Openfire 3.7.1(On Ubuntu 10.04 LTS) server with Spark 2.6.3(WindowsXP).

I think losing a message or dropped connection derived from the size of the message.

How can I shoot my trouble?

Thank you for reading…