Tcp Connection Queue - SATO CL4NX Programming Reference Manual

TCP connection queue

TCP connection queue functionality allows the printer to return an acknowledgement response
(ACK) to a connection request (SYN) from another host while the printer is connected to one host.
Note: For connection with one host, this function prevents the printer from returning a forced
disconnection (RST) to the host if the printer receives the next connection request (SYN) ahead in
case a process of connection termination (FIN) is delayed by network delay.
TCP connection queue: Disabled
While connected to one host, the printer returns a forced disconnection (RST) to a connection
request (SYN) from another host.
Host 2
CONNECT
Host 1
CONNECT
SYN
RST
CLOSE
695
Printer
SYN
ACK
FIN
FIN ACK
ACCEPT
Host 1 and printer
are connected
CLOSE