# Configuration Variables for sctp

## sctp.socket_rcvbuf

socket receive buffer size (read-only).

Range: 512 - 102400.

Type: integer.

Read-only.

## sctp.socket_sndbuf

socket send buffer size (read-only).

Range: 512 - 102400.

Type: integer.

Read-only.

## sctp.autoclose

seconds before closing and idle connection (must be non-zero).

Range: 1 - 1073741824.

Type: integer.

## sctp.send_ttl

milliseconds before aborting a send.

Range: 0 - 1073741824.

Type: integer.

## sctp.send_retries

re-send attempts on failure.

Range: 0 - 9.

Type: integer.

## sctp.assoc_tracking

connection/association tracking (see also assoc_reuse).

Range: 0 - 1.

Type: integer.

## sctp.assoc_reuse

connection/association reuse (for now used only for replies), depends on assoc_tracking being set.

Range: 0 - 1.

Type: integer.

## sctp.max_assocs

maximum allowed open associations (-1 = disable, as many as allowed by the OS).

Type: integer.

## sctp.srto_initial

initial value of the retr. timeout, used in RTO calculations, in msecs.

Range: 0 - 1073741824.

Type: integer.

## sctp.srto_max

maximum value of the retransmission timeout (RTO), in msecs.

Range: 0 - 1073741824.

Type: integer.

## sctp.srto_min

minimum value of the retransmission timeout (RTO), in msecs.

Range: 0 - 1073741824.

Type: integer.

## sctp.asocmaxrxt

maximum retransmission attempts per association.

Range: 0 - 1024.

Type: integer.

## sctp.init_max_attempts

max INIT retransmission attempts.

Range: 0 - 1024.

Type: integer.

## sctp.init_max_timeo

max INIT retransmission timeout (RTO max for INIT), in msecs.

Range: 0 - 1073741824.

Type: integer.

## sctp.hbinterval

heartbeat interval in msecs.

Range: 0 - 1073741824.

Type: integer.

## sctp.pathmaxrxt

maximum retransmission attempts per path.

Range: 0 - 1024.

Type: integer.

## sctp.sack_delay

time since the last received packet before sending a SACK, in msecs.

Range: 0 - 1073741824.

Type: integer.

## sctp.sack_freq

number of received packets that trigger the sending of a SACK.

Range: 0 - 1024.

Type: integer.

## sctp.max_burst

maximum burst of packets that can be emitted by an association.

Range: 0 - 1024.

Type: integer.