Websocket custom check


I have a trading websocket application and it will send messages continuously when connected. I want to write a custom check for websocket to verify every message are recieved within 100ms I have the created time in my message and I want to verify that message is recieved in client ( gatling ) within 100ms. How can I achieve this ? I could see that currently this can be done with only 1 message but I want to have it for more than one messages say 100.

Anyone please help with this.