| /* |
| * include/common/defaults.h |
| * Miscellaneous default values. |
| * |
| * Copyright (C) 2000-2010 Willy Tarreau - w@1wt.eu |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation, version 2.1 |
| * exclusively. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with this library; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #ifndef _COMMON_DEFAULTS_H |
| #define _COMMON_DEFAULTS_H |
| |
| /* |
| * BUFSIZE defines the size of a read and write buffer. It is the maximum |
| * amount of bytes which can be stored by the proxy for each session. However, |
| * when reading HTTP headers, the proxy needs some spare space to add or rewrite |
| * headers if needed. The size of this spare is defined with MAXREWRITE. So it |
| * is not possible to process headers longer than BUFSIZE-MAXREWRITE bytes. By |
| * default, BUFSIZE=16384 bytes and MAXREWRITE=BUFSIZE/2, so the maximum length |
| * of headers accepted is 8192 bytes, which is in line with Apache's limits. |
| */ |
| #ifndef BUFSIZE |
| #define BUFSIZE 16384 |
| #endif |
| |
| // reserved buffer space for header rewriting |
| #ifndef MAXREWRITE |
| #define MAXREWRITE (BUFSIZE / 2) |
| #endif |
| |
| #define REQURI_LEN 1024 |
| #define CAPTURE_LEN 64 |
| |
| // maximum line size when parsing config |
| #ifndef LINESIZE |
| #define LINESIZE 2048 |
| #endif |
| |
| // max # args on a configuration line |
| #define MAX_LINE_ARGS 64 |
| |
| // max # args on a stats socket |
| #define MAX_STATS_ARGS 16 |
| |
| // max # of matches per regexp |
| #define MAX_MATCH 10 |
| |
| // max # of headers in one HTTP request or response |
| // By default, about 100 headers per 8 kB. |
| #ifndef MAX_HTTP_HDR |
| #define MAX_HTTP_HDR ((BUFSIZE+79)/80) |
| #endif |
| |
| // max # of headers in history when looking for header #-X |
| #ifndef MAX_HDR_HISTORY |
| #define MAX_HDR_HISTORY 10 |
| #endif |
| |
| // max # of loops we can perform around a read() which succeeds. |
| // It's very frequent that the system returns a few TCP segments at a time. |
| #ifndef MAX_READ_POLL_LOOPS |
| #define MAX_READ_POLL_LOOPS 4 |
| #endif |
| |
| // minimum number of bytes read at once above which we don't try to read |
| // more, in order not to risk facing an EAGAIN. Most often, if we read |
| // at least 10 kB, we can consider that the system has tried to read a |
| // full buffer and got multiple segments (>1 MSS for jumbo frames, >7 MSS |
| // for normal frames) did not bother truncating the last segment. |
| #ifndef MIN_RECV_AT_ONCE_ENOUGH |
| #define MIN_RECV_AT_ONCE_ENOUGH (7*1448) |
| #endif |
| |
| // same, but for writes. Generally, it's enough to write twice: one time for |
| // first half of the buffer, and a second time for the last half after a |
| // wrap-around. |
| #ifndef MAX_WRITE_POLL_LOOPS |
| #define MAX_WRITE_POLL_LOOPS 2 |
| #endif |
| |
| // the number of bytes returned by a read below which we will not try to |
| // poll the socket again. Generally, return values below the MSS are worthless |
| // to try again. |
| #ifndef MIN_RET_FOR_READ_LOOP |
| #define MIN_RET_FOR_READ_LOOP 1460 |
| #endif |
| |
| // The minimum number of bytes to be forwarded that is worth trying to splice. |
| // Below 4kB, it's not worth allocating pipes nor pretending to zero-copy. |
| #ifndef MIN_SPLICE_FORWARD |
| #define MIN_SPLICE_FORWARD 4096 |
| #endif |
| |
| // the max number of events returned in one call to poll/epoll. Too small a |
| // value will cause lots of calls, and too high a value may cause high latency. |
| #ifndef MAX_POLL_EVENTS |
| #define MAX_POLL_EVENTS 200 |
| #endif |
| |
| // cookie delimitor in "prefix" mode. This character is inserted between the |
| // persistence cookie and the original value. The '~' is allowed by RFC2965, |
| // and should not be too common in server names. |
| #ifndef COOKIE_DELIM |
| #define COOKIE_DELIM '~' |
| #endif |
| |
| // this delimitor is used between a server's name and a last visit date in |
| // cookies exchanged with the client. |
| #ifndef COOKIE_DELIM_DATE |
| #define COOKIE_DELIM_DATE '|' |
| #endif |
| |
| #define CONN_RETRIES 3 |
| |
| #define CHK_CONNTIME 2000 |
| #define DEF_CHKINTR 2000 |
| #define DEF_FALLTIME 3 |
| #define DEF_RISETIME 2 |
| #define DEF_CHECK_REQ "OPTIONS / HTTP/1.0\r\n" |
| #define DEF_SMTP_CHECK_REQ "HELO localhost\r\n" |
| #define DEF_LDAP_CHECK_REQ "\x30\x0c\x02\x01\x01\x60\x07\x02\x01\x03\x04\x00\x80\x00" |
| |
| #define DEF_HANA_ONERR HANA_ONERR_FAILCHK |
| #define DEF_HANA_ERRLIMIT 10 |
| |
| // X-Forwarded-For header default |
| #define DEF_XFORWARDFOR_HDR "X-Forwarded-For" |
| |
| // X-Original-To header default |
| #define DEF_XORIGINALTO_HDR "X-Original-To" |
| |
| /* Default connections limit. |
| * |
| * A system limit can be enforced at build time in order to avoid using haproxy |
| * beyond reasonable system limits. For this, just define SYSTEM_MAXCONN to the |
| * absolute limit accepted by the system. If the configuration specifies a |
| * higher value, it will be capped to SYSTEM_MAXCONN and a warning will be |
| * emitted. The only way to override this limit will be to set it via the |
| * command-line '-n' argument. |
| */ |
| #ifndef SYSTEM_MAXCONN |
| #ifndef DEFAULT_MAXCONN |
| #define DEFAULT_MAXCONN 2000 |
| #endif |
| #else |
| #undef DEFAULT_MAXCONN |
| #define DEFAULT_MAXCONN SYSTEM_MAXCONN |
| #endif |
| |
| /* Minimum check interval for spread health checks. Servers with intervals |
| * greater than or equal to this value will have their checks spread apart |
| * and will be considered when searching the minimal interval. |
| * Others will be ignored for the minimal interval and will have their checks |
| * scheduled on a different basis. |
| */ |
| #ifndef SRV_CHK_INTER_THRES |
| #define SRV_CHK_INTER_THRES 1000 |
| #endif |
| |
| /* Specifies the string used to report the version and release date on the |
| * statistics page. May be defined to the empty string ("") to permanently |
| * disable the feature. |
| */ |
| #ifndef STATS_VERSION_STRING |
| #define STATS_VERSION_STRING " version " HAPROXY_VERSION ", released " HAPROXY_DATE |
| #endif |
| |
| /* Maximum signal queue size, and also number of different signals we can |
| * handle. |
| */ |
| #ifndef MAX_SIGNAL |
| #define MAX_SIGNAL 256 |
| #endif |
| |
| /* Maximum host name length */ |
| #ifndef MAX_HOSTNAME_LEN |
| #define MAX_HOSTNAME_LEN 32 |
| #endif |
| |
| /* Maximum health check description length */ |
| #ifndef HCHK_DESC_LEN |
| #define HCHK_DESC_LEN 128 |
| #endif |
| |
| #endif /* _COMMON_DEFAULTS_H */ |