2009-03-22 05:30:00 -04:00
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/* anet.c -- Basic TCP socket stuff made a bit less boring
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*
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2012-11-08 12:25:23 -05:00
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* Copyright (c) 2006-2012, Salvatore Sanfilippo <antirez at gmail dot com>
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2009-03-22 05:30:00 -04:00
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of Redis nor the names of its contributors may be used
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* to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef ANET_H
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#define ANET_H
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2016-01-08 09:05:14 -05:00
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#include <sys/types.h>
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2009-03-22 05:30:00 -04:00
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#define ANET_OK 0
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#define ANET_ERR -1
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#define ANET_ERR_LEN 256
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2014-01-10 09:02:39 -05:00
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/* Flags used with certain functions. */
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#define ANET_NONE 0
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#define ANET_IP_ONLY (1<<0)
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2014-07-29 17:39:37 -04:00
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#if defined(__sun) || defined(_AIX)
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2010-12-23 06:09:07 -05:00
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#define AF_LOCAL AF_UNIX
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#endif
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2014-07-29 17:39:37 -04:00
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#ifdef _AIX
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#undef ip_len
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#endif
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2020-10-28 15:13:44 -04:00
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/* FD to address string conversion types */
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#define FD_TO_PEER_NAME 0
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#define FD_TO_SOCK_NAME 1
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2019-09-12 03:56:54 -04:00
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int anetTcpNonBlockConnect(char *err, const char *addr, int port);
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int anetTcpNonBlockBestEffortBindConnect(char *err, const char *addr, int port, const char *source_addr);
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Add hostname support in Sentinel. (#8282)
This is both a bugfix and an enhancement.
Internally, Sentinel relies entirely on IP addresses to identify
instances. When configured with a new master, it also requires users to
specify and IP and not hostname.
However, replicas may use the replica-announce-ip configuration to
announce a hostname. When that happens, Sentinel fails to match the
announced hostname with the expected IP and considers that a different
instance, triggering reconfiguration, etc.
Another use case is where TLS is used and clients are expected to match
the hostname to connect to with the certificate's SAN attribute. To
properly implement this configuration, it is necessary for Sentinel to
redirect clients to a hostname rather than an IP address.
The new 'resolve-hostnames' configuration parameter determines if
Sentinel is willing to accept hostnames. It is set by default to no,
which maintains backwards compatibility and avoids unexpected DNS
resolution delays on systems with DNS configuration issues.
Internally, Sentinel continues to identify instances by their resolved
IP address and will also report the IP by default. The new
'announce-hostnames' parameter determines if Sentinel should prefer to
announce a hostname, when available, rather than an IP address. This
applies to addresses returned to clients, as well as their
representation in the configuration file, REPLICAOF configuration
commands, etc.
This commit also introduces SENTINEL CONFIG GET and SENTINEL CONFIG SET
which can be used to introspect or configure global Sentinel
configuration that was previously was only possible by directly
accessing the configuration file and possibly restarting the instance.
Co-authored-by: myl1024 <myl92916@qq.com>
Co-authored-by: sundb <sundbcn@gmail.com>
2021-01-28 05:09:11 -05:00
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int anetResolve(char *err, char *host, char *ipbuf, size_t ipbuf_len, int flags);
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2013-11-08 14:55:48 -05:00
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int anetTcpServer(char *err, int port, char *bindaddr, int backlog);
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int anetTcp6Server(char *err, int port, char *bindaddr, int backlog);
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int anetUnixServer(char *err, char *path, mode_t perm, int backlog);
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2011-06-17 14:47:49 -04:00
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int anetTcpAccept(char *err, int serversock, char *ip, size_t ip_len, int *port);
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2010-10-13 12:50:07 -04:00
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int anetUnixAccept(char *err, int serversock);
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2009-03-22 05:30:00 -04:00
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int anetNonBlock(char *err, int fd);
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2014-10-17 10:30:11 -04:00
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int anetBlock(char *err, int fd);
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2021-01-19 15:57:30 -05:00
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int anetCloexec(int fd);
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2013-01-31 05:14:15 -05:00
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int anetEnableTcpNoDelay(char *err, int fd);
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int anetDisableTcpNoDelay(char *err, int fd);
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2014-10-22 09:23:21 -04:00
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int anetSendTimeout(char *err, int fd, long long ms);
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2019-07-01 08:22:29 -04:00
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int anetRecvTimeout(char *err, int fd, long long ms);
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2020-10-28 15:13:44 -04:00
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int anetFdToString(int fd, char *ip, size_t ip_len, int *port, int fd_to_str_type);
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2013-02-08 10:30:21 -05:00
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int anetKeepAlive(char *err, int fd, int interval);
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2014-12-11 12:20:30 -05:00
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int anetFormatAddr(char *fmt, size_t fmt_len, char *ip, int port);
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2020-10-28 15:13:44 -04:00
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int anetFormatFdAddr(int fd, char *buf, size_t buf_len, int fd_to_str_type);
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2021-10-06 09:08:13 -04:00
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int anetPipe(int fds[2], int read_flags, int write_flags);
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2009-03-22 05:30:00 -04:00
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#endif
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