Hi, I’m integrating the nGEM detector at an EPICS control system. We are connecting a socket straight to TCP port 24 and recovering the data it sends to the connection.
We noticed some packets come with 16 bytes of data and some come with 32 bytes of data and I am wondering what is the limit on what the detector can buffer into a single packet, does anyone have any info on that?
Hi marcomontevechi1,
The size of TCP user data in one SiTCP packet is less than or equal to the MSS.
Also, packet boundaries and user data boundaries do not necessarily match.
The default MSS is 1,460 bytes.