To view the number of HTTP concurrent connections

Netstat-nt|awk ' {++s[$NF]}end{for (A in S) print A,s[a]} ' time_wait 49State 1ESTABLISHED 777servers) 1

LISTEN: The server is waiting to enter the call
SYN_RECV: A connection request has arrived, waiting for confirmation
syn_sent: Application has started, open a connection
established: Normal data transfer status
fin_wait1: Application says it's done
Fin_wait2: The other side has agreed to release
itmed_wait: Waiting for all packets to die
CLOSING: Both sides try to close simultaneously
time_wait: The other side has initialized a release
Last_ack: Waiting for all packets to die

To view the number of HTTP concurrent connections