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Willy Tarreaubaaee002006-06-26 02:48:02 +02001/*
Willy Tarreau2dd0d472006-06-29 17:53:05 +02002 include/common/defaults.h
Willy Tarreaubaaee002006-06-26 02:48:02 +02003 Miscellaneous default values.
4
5 Copyright (C) 2000-2006 Willy Tarreau - w@1wt.eu
6
7 This library is free software; you can redistribute it and/or
8 modify it under the terms of the GNU Lesser General Public
9 License as published by the Free Software Foundation, version 2.1
10 exclusively.
11
12 This library is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 Lesser General Public License for more details.
16
17 You should have received a copy of the GNU Lesser General Public
18 License along with this library; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20*/
21
Willy Tarreau2dd0d472006-06-29 17:53:05 +020022#ifndef _COMMON_DEFAULTS_H
23#define _COMMON_DEFAULTS_H
Willy Tarreaubaaee002006-06-26 02:48:02 +020024
Willy Tarreaubaaee002006-06-26 02:48:02 +020025/*
26 * BUFSIZE defines the size of a read and write buffer. It is the maximum
27 * amount of bytes which can be stored by the proxy for each session. However,
28 * when reading HTTP headers, the proxy needs some spare space to add or rewrite
29 * headers if needed. The size of this spare is defined with MAXREWRITE. So it
30 * is not possible to process headers longer than BUFSIZE-MAXREWRITE bytes. By
31 * default, BUFSIZE=16384 bytes and MAXREWRITE=BUFSIZE/2, so the maximum length
32 * of headers accepted is 8192 bytes, which is in line with Apache's limits.
33 */
34#ifndef BUFSIZE
35#define BUFSIZE 16384
36#endif
37
38// reserved buffer space for header rewriting
39#ifndef MAXREWRITE
40#define MAXREWRITE (BUFSIZE / 2)
41#endif
42
43#define REQURI_LEN 1024
44#define CAPTURE_LEN 64
45
46// max # args on a configuration line
47#define MAX_LINE_ARGS 40
48
49// max # of added headers per request
50#define MAX_NEWHDR 10
51
52// max # of matches per regexp
53#define MAX_MATCH 10
54
Willy Tarreaue5f20dc2006-12-03 15:21:35 +010055// max # of headers in one HTTP request or response
56// By default, about 100 headers per 8 kB.
57#ifndef MAX_HTTP_HDR
58#define MAX_HTTP_HDR ((BUFSIZE+79)/80)
59#endif
60
Willy Tarreaub8949f12007-03-23 22:39:59 +010061// max # of loops we can perform around a read() which succeeds.
62// It's very frequent that the system returns a few TCP segments at a time.
63#ifndef MAX_READ_POLL_LOOPS
64#define MAX_READ_POLL_LOOPS 4
65#endif
66
Willy Tarreau83749182007-04-15 20:56:27 +020067// same, but for writes. Generally, it's enough to write twice: one time for
68// first half of the buffer, and a second time for the last half after a
69// wrap-around.
70#ifndef MAX_WRITE_POLL_LOOPS
71#define MAX_WRITE_POLL_LOOPS 2
72#endif
73
Willy Tarreau9641e8f2007-03-23 23:02:09 +010074// the number of bytes returned by a read below which we will not try to
75// poll the socket again. Generally, return values below the MSS are worthless
76// to try again.
77#ifndef MIN_RET_FOR_READ_LOOP
78#define MIN_RET_FOR_READ_LOOP 1460
79#endif
80
Willy Tarreaubaaee002006-06-26 02:48:02 +020081// cookie delimitor in "prefix" mode. This character is inserted between the
82// persistence cookie and the original value. The '~' is allowed by RFC2965,
83// and should not be too common in server names.
84#ifndef COOKIE_DELIM
85#define COOKIE_DELIM '~'
86#endif
87
88#define CONN_RETRIES 3
89
90#define CHK_CONNTIME 2000
91#define DEF_CHKINTR 2000
92#define DEF_FALLTIME 3
93#define DEF_RISETIME 2
94#define DEF_CHECK_REQ "OPTIONS / HTTP/1.0\r\n\r\n"
Willy Tarreau23677902007-05-08 23:50:35 +020095#define DEF_SMTP_CHECK_REQ "HELO localhost\r\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +020096
97/* Default connections limit.
98 *
99 * A system limit can be enforced at build time in order to avoid using haproxy
100 * beyond reasonable system limits. For this, just define SYSTEM_MAXCONN to the
101 * absolute limit accepted by the system. If the configuration specifies a
102 * higher value, it will be capped to SYSTEM_MAXCONN and a warning will be
103 * emitted. The only way to override this limit will be to set it via the
104 * command-line '-n' argument.
105 */
106#ifndef SYSTEM_MAXCONN
107#define DEFAULT_MAXCONN 2000
108#else
109#define DEFAULT_MAXCONN SYSTEM_MAXCONN
110#endif
111
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200112#endif /* _COMMON_DEFAULTS_H */