199 lines
6.3 KiB
C
199 lines
6.3 KiB
C
/*
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* include/common/defaults.h
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* Miscellaneous default values.
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*
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* Copyright (C) 2000-2010 Willy Tarreau - w@1wt.eu
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation, version 2.1
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* exclusively.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef _COMMON_DEFAULTS_H
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#define _COMMON_DEFAULTS_H
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/*
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* BUFSIZE defines the size of a read and write buffer. It is the maximum
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* amount of bytes which can be stored by the proxy for each session. However,
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* when reading HTTP headers, the proxy needs some spare space to add or rewrite
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* headers if needed. The size of this spare is defined with MAXREWRITE. So it
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* is not possible to process headers longer than BUFSIZE-MAXREWRITE bytes. By
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* default, BUFSIZE=16384 bytes and MAXREWRITE=BUFSIZE/2, so the maximum length
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* of headers accepted is 8192 bytes, which is in line with Apache's limits.
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*/
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#ifndef BUFSIZE
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#define BUFSIZE 16384
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#endif
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// reserved buffer space for header rewriting
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#ifndef MAXREWRITE
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#define MAXREWRITE (BUFSIZE / 2)
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#endif
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#define REQURI_LEN 1024
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#define CAPTURE_LEN 64
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// maximum line size when parsing config
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#ifndef LINESIZE
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#define LINESIZE 2048
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#endif
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// max # args on a configuration line
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#define MAX_LINE_ARGS 64
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// max # args on a stats socket
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#define MAX_STATS_ARGS 16
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// max # of matches per regexp
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#define MAX_MATCH 10
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// max # of headers in one HTTP request or response
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// By default, about 100 headers (+1 for the first line)
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#ifndef MAX_HTTP_HDR
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#define MAX_HTTP_HDR 101
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#endif
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// max # of headers in history when looking for header #-X
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#ifndef MAX_HDR_HISTORY
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#define MAX_HDR_HISTORY 10
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#endif
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// max # of loops we can perform around a read() which succeeds.
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// It's very frequent that the system returns a few TCP segments at a time.
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#ifndef MAX_READ_POLL_LOOPS
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#define MAX_READ_POLL_LOOPS 4
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#endif
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// minimum number of bytes read at once above which we don't try to read
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// more, in order not to risk facing an EAGAIN. Most often, if we read
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// at least 10 kB, we can consider that the system has tried to read a
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// full buffer and got multiple segments (>1 MSS for jumbo frames, >7 MSS
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// for normal frames) did not bother truncating the last segment.
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#ifndef MIN_RECV_AT_ONCE_ENOUGH
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#define MIN_RECV_AT_ONCE_ENOUGH (7*1448)
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#endif
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// same, but for writes. Generally, it's enough to write twice: one time for
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// first half of the buffer, and a second time for the last half after a
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// wrap-around.
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#ifndef MAX_WRITE_POLL_LOOPS
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#define MAX_WRITE_POLL_LOOPS 2
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#endif
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// the number of bytes returned by a read below which we will not try to
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// poll the socket again. Generally, return values below the MSS are worthless
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// to try again.
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#ifndef MIN_RET_FOR_READ_LOOP
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#define MIN_RET_FOR_READ_LOOP 1460
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#endif
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// The minimum number of bytes to be forwarded that is worth trying to splice.
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// Below 4kB, it's not worth allocating pipes nor pretending to zero-copy.
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#ifndef MIN_SPLICE_FORWARD
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#define MIN_SPLICE_FORWARD 4096
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#endif
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// the max number of events returned in one call to poll/epoll. Too small a
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// value will cause lots of calls, and too high a value may cause high latency.
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#ifndef MAX_POLL_EVENTS
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#define MAX_POLL_EVENTS 200
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#endif
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// cookie delimitor in "prefix" mode. This character is inserted between the
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// persistence cookie and the original value. The '~' is allowed by RFC2965,
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// and should not be too common in server names.
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#ifndef COOKIE_DELIM
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#define COOKIE_DELIM '~'
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#endif
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// this delimitor is used between a server's name and a last visit date in
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// cookies exchanged with the client.
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#ifndef COOKIE_DELIM_DATE
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#define COOKIE_DELIM_DATE '|'
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#endif
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#define CONN_RETRIES 3
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#define CHK_CONNTIME 2000
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#define DEF_CHKINTR 2000
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#define DEF_FALLTIME 3
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#define DEF_RISETIME 2
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#define DEF_CHECK_REQ "OPTIONS / HTTP/1.0\r\n"
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#define DEF_SMTP_CHECK_REQ "HELO localhost\r\n"
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#define DEF_LDAP_CHECK_REQ "\x30\x0c\x02\x01\x01\x60\x07\x02\x01\x03\x04\x00\x80\x00"
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#define DEF_REDIS_CHECK_REQ "*1\r\n$4\r\nPING\r\n"
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#define DEF_HANA_ONERR HANA_ONERR_FAILCHK
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#define DEF_HANA_ERRLIMIT 10
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// X-Forwarded-For header default
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#define DEF_XFORWARDFOR_HDR "X-Forwarded-For"
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// X-Original-To header default
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#define DEF_XORIGINALTO_HDR "X-Original-To"
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/* Default connections limit.
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*
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* A system limit can be enforced at build time in order to avoid using haproxy
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* beyond reasonable system limits. For this, just define SYSTEM_MAXCONN to the
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* absolute limit accepted by the system. If the configuration specifies a
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* higher value, it will be capped to SYSTEM_MAXCONN and a warning will be
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* emitted. The only way to override this limit will be to set it via the
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* command-line '-n' argument.
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*/
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#ifndef SYSTEM_MAXCONN
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#ifndef DEFAULT_MAXCONN
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#define DEFAULT_MAXCONN 2000
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#endif
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#else
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#undef DEFAULT_MAXCONN
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#define DEFAULT_MAXCONN SYSTEM_MAXCONN
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#endif
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/* Minimum check interval for spread health checks. Servers with intervals
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* greater than or equal to this value will have their checks spread apart
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* and will be considered when searching the minimal interval.
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* Others will be ignored for the minimal interval and will have their checks
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* scheduled on a different basis.
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*/
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#ifndef SRV_CHK_INTER_THRES
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#define SRV_CHK_INTER_THRES 1000
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#endif
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/* Specifies the string used to report the version and release date on the
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* statistics page. May be defined to the empty string ("") to permanently
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* disable the feature.
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*/
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#ifndef STATS_VERSION_STRING
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#define STATS_VERSION_STRING " version " HAPROXY_VERSION ", released " HAPROXY_DATE
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#endif
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/* Maximum signal queue size, and also number of different signals we can
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* handle.
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*/
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#ifndef MAX_SIGNAL
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#define MAX_SIGNAL 256
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#endif
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/* Maximum host name length */
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#ifndef MAX_HOSTNAME_LEN
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#define MAX_HOSTNAME_LEN 32
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#endif
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/* Maximum health check description length */
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#ifndef HCHK_DESC_LEN
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#define HCHK_DESC_LEN 128
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#endif
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#endif /* _COMMON_DEFAULTS_H */
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