# Counters for tcp

## tcp.established

incremented each time a tcp connection is established.

## tcp.passive_open

total number of accepted connections (so far).

## tcp.connect_success

total number of successfully active opened connections (successful connect()s).

## tcp.connect_failed

number of failed active connection attempts.

## tcp.local_reject

number of rejected incoming connections.

## tcp.con_timeout

total number of connections that did timeout (idle for too long).

## tcp.con_reset

total number of TCP_RSTs received on established connections.

## tcp.send_timeout

number of send attempts that failed due to a timeout(note: works only in tcp async mode).

## tcp.sendq_full

number of send attempts that failed because of exceeded bufferingcapacity (send queue full, works only in tcp async mode).

## tcp.current_opened_connections

number of currently opened connections.

## tcp.current_write_queue_size

current sum of all the connections write queue sizes.