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| Source at commit 1808 created 12 years 4 months ago. By blackosx, Revise layout of package installer 'Welcome' file so it looks cleaner. Change the copyright notice to begin from 2009 as seen in the Chameleon 2.0 r431 installer. Should this date be set earlier? | |
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| 1 | /*␊ |
| 2 | * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.␊ |
| 3 | *␊ |
| 4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@␊ |
| 5 | * ␊ |
| 6 | * This file contains Original Code and/or Modifications of Original Code␊ |
| 7 | * as defined in and that are subject to the Apple Public Source License␊ |
| 8 | * Version 2.0 (the 'License'). You may not use this file except in␊ |
| 9 | * compliance with the License. The rights granted to you under the License␊ |
| 10 | * may not be used to create, or enable the creation or redistribution of,␊ |
| 11 | * unlawful or unlicensed copies of an Apple operating system, or to␊ |
| 12 | * circumvent, violate, or enable the circumvention or violation of, any␊ |
| 13 | * terms of an Apple operating system software license agreement.␊ |
| 14 | * ␊ |
| 15 | * Please obtain a copy of the License at␊ |
| 16 | * http://www.opensource.apple.com/apsl/ and read it before using this file.␊ |
| 17 | * ␊ |
| 18 | * The Original Code and all software distributed under the License are␊ |
| 19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER␊ |
| 20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,␊ |
| 21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,␊ |
| 22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.␊ |
| 23 | * Please see the License for the specific language governing rights and␊ |
| 24 | * limitations under the License.␊ |
| 25 | * ␊ |
| 26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@␊ |
| 27 | */␊ |
| 28 | /*␊ |
| 29 | * Copyright (c) 1982, 1986, 1993␊ |
| 30 | *␉The Regents of the University of California. All rights reserved.␊ |
| 31 | *␊ |
| 32 | * Redistribution and use in source and binary forms, with or without␊ |
| 33 | * modification, are permitted provided that the following conditions␊ |
| 34 | * are met:␊ |
| 35 | * 1. Redistributions of source code must retain the above copyright␊ |
| 36 | * notice, this list of conditions and the following disclaimer.␊ |
| 37 | * 2. Redistributions in binary form must reproduce the above copyright␊ |
| 38 | * notice, this list of conditions and the following disclaimer in the␊ |
| 39 | * documentation and/or other materials provided with the distribution.␊ |
| 40 | * 3. All advertising materials mentioning features or use of this software␊ |
| 41 | * must display the following acknowledgement:␊ |
| 42 | *␉This product includes software developed by the University of␊ |
| 43 | *␉California, Berkeley and its contributors.␊ |
| 44 | * 4. Neither the name of the University nor the names of its contributors␊ |
| 45 | * may be used to endorse or promote products derived from this software␊ |
| 46 | * without specific prior written permission.␊ |
| 47 | *␊ |
| 48 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND␊ |
| 49 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE␊ |
| 50 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE␊ |
| 51 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE␊ |
| 52 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL␊ |
| 53 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS␊ |
| 54 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)␊ |
| 55 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT␊ |
| 56 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY␊ |
| 57 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF␊ |
| 58 | * SUCH DAMAGE.␊ |
| 59 | *␊ |
| 60 | *␉@(#)tcp_timer.h␉8.1 (Berkeley) 6/10/93␊ |
| 61 | * $FreeBSD: src/sys/netinet/tcp_timer.h,v 1.18 1999/12/29 04:41:03 peter Exp $␊ |
| 62 | */␊ |
| 63 | ␊ |
| 64 | #ifndef _NETINET_TCP_TIMER_H_␊ |
| 65 | #define _NETINET_TCP_TIMER_H_␊ |
| 66 | #include <sys/appleapiopts.h>␊ |
| 67 | ␊ |
| 68 | /*␊ |
| 69 | * Definitions of the TCP timers. These timers are counted␊ |
| 70 | * down PR_SLOWHZ times a second.␊ |
| 71 | */␊ |
| 72 | #define␉TCPT_NTIMERS␉4␊ |
| 73 | ␊ |
| 74 | #define␉TCPT_REXMT␉0␉␉/* retransmit */␊ |
| 75 | #define␉TCPT_PERSIST␉1␉␉/* retransmit persistence */␊ |
| 76 | #define␉TCPT_KEEP␉2␉␉/* keep alive */␊ |
| 77 | #define␉TCPT_2MSL␉3␉␉/* 2*msl quiet time timer */␊ |
| 78 | ␊ |
| 79 | /*␊ |
| 80 | * The TCPT_REXMT timer is used to force retransmissions.␊ |
| 81 | * The TCP has the TCPT_REXMT timer set whenever segments␊ |
| 82 | * have been sent for which ACKs are expected but not yet␊ |
| 83 | * received. If an ACK is received which advances tp->snd_una,␊ |
| 84 | * then the retransmit timer is cleared (if there are no more␊ |
| 85 | * outstanding segments) or reset to the base value (if there␊ |
| 86 | * are more ACKs expected). Whenever the retransmit timer goes off,␊ |
| 87 | * we retransmit one unacknowledged segment, and do a backoff␊ |
| 88 | * on the retransmit timer.␊ |
| 89 | *␊ |
| 90 | * The TCPT_PERSIST timer is used to keep window size information␊ |
| 91 | * flowing even if the window goes shut. If all previous transmissions␊ |
| 92 | * have been acknowledged (so that there are no retransmissions in progress),␊ |
| 93 | * and the window is too small to bother sending anything, then we start␊ |
| 94 | * the TCPT_PERSIST timer. When it expires, if the window is nonzero,␊ |
| 95 | * we go to transmit state. Otherwise, at intervals send a single byte␊ |
| 96 | * into the peer's window to force him to update our window information.␊ |
| 97 | * We do this at most as often as TCPT_PERSMIN time intervals,␊ |
| 98 | * but no more frequently than the current estimate of round-trip␊ |
| 99 | * packet time. The TCPT_PERSIST timer is cleared whenever we receive␊ |
| 100 | * a window update from the peer.␊ |
| 101 | *␊ |
| 102 | * The TCPT_KEEP timer is used to keep connections alive. If an␊ |
| 103 | * connection is idle (no segments received) for TCPTV_KEEP_INIT amount of time,␊ |
| 104 | * but not yet established, then we drop the connection. Once the connection␊ |
| 105 | * is established, if the connection is idle for TCPTV_KEEP_IDLE time␊ |
| 106 | * (and keepalives have been enabled on the socket), we begin to probe␊ |
| 107 | * the connection. We force the peer to send us a segment by sending:␊ |
| 108 | *␉<SEQ=SND.UNA-1><ACK=RCV.NXT><CTL=ACK>␊ |
| 109 | * This segment is (deliberately) outside the window, and should elicit␊ |
| 110 | * an ack segment in response from the peer. If, despite the TCPT_KEEP␊ |
| 111 | * initiated segments we cannot elicit a response from a peer in TCPT_MAXIDLE␊ |
| 112 | * amount of time probing, then we drop the connection.␊ |
| 113 | */␊ |
| 114 | ␊ |
| 115 | #endif /* !_NETINET_TCP_TIMER_H_ */␊ |
| 116 | ␊ |
| 117 | |
