We're using a variant of the virtual serial port concentrator with ESX 5. We've noticed that when a VMs console is connected through vSPC, input is
truncated to 384 characters. This doesn't happen if we create a VM with a telnet console port and telnet in. We've verified that the packet sent from
vSPC to the host contains the whole line.
Is there a limitation on vSPC input sizes, or some setting that we need to change?
No, it seems to just truncate. This is repropduced with manually cutting and pasting into the terminal window for the console.
In a related update, we have been able to work around this by modifying the send code in vSPC to send a maximum of 300 characters and
then do a short sleep.