hack to time out connections with a zero window and a dead peer.
if the peer does not respond in the time we would allow for retransmission,
or within a fixed time, drop the connection. Minor optimi

hack to time out connections with a zero window and a dead peer.
if the peer does not respond in the time we would allow for retransmission,
or within a fixed time, drop the connection. Minor optimization in timers:
listening sockets run no timers.

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4.4BSD snapshot (revision 8.1); add 1993 to copyright

prototype everything

include TUBA support for now

(By Sklower) checkpoint the current state of Cherenson's work.

make kernel includes standard

new copyright notice

add macro for rexmt time; use soft error if set after timeout

in_pcb.h requires ip.h

add arg to tcp_respond

update copyright on branch

install approved copyright notice

ack immediately when segment is received out of order;
remove tcpnodelack

update branch

much longer keepalive timer (don't start probes for 2 hr);
fix input window test again (accept acks from FINS at left edge and responses
to keepalives, but dropafterack otherwise; also fixes Phil Kar

much longer keepalive timer (don't start probes for 2 hr);
fix input window test again (accept acks from FINS at left edge and responses
to keepalives, but dropafterack otherwise; also fixes Phil Karn's problem
with failure to respond to new SYN to left of window); can't use tcp_drop
after RST, or we'll send RST in response

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branch for FTP release (#ifdefs for non-4.3)

use Berkeley specific header

two-phase slow start

Phil Karn's retransmit algorithm, using t_rxtcur for current rexmt value;
slow start from beginning if connection not local; get rtt estimate on SYN

missed one

remove patchable keeplen, put old keepalives on opt TCP_COMPAT_42

redo retransmit calculations as srtt + 2*smoothed variance
(from Van Jacobson)

slow-start changes from van

need data in keepalives for now for 4.2/ultrix compat

hack keepalives for now (for Ultrix, at least)