GCOV - Varnish Cache


/*-
 * Copyright (c) 2006 Verdens Gang AS
 * Copyright (c) 2006-2015 Varnish Software AS
 * All rights reserved.
 *
 * Author: Poul-Henning Kamp <phk@phk.freebsd.dk>
 *
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * Parameters related to TCP keepalives are not universally available
 * as socket options, and probing for system-wide defaults more appropriate
 * than our own involves slightly too much grunt-work to be negligible
 * so we sequestrate that code here.
 */

#include "config.h"

#include <sys/types.h>
#include <sys/socket.h>
#include <stdio.h>
#include <stdlib.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <unistd.h>

#include "mgt/mgt.h"
#include "common/heritage.h"

#include "vtcp.h"

#if defined(HAVE_TCP_KEEP) || defined(HAVE_TCP_KEEPALIVE)

static void
tcp_probe(int sock, int nam, const char *param, unsigned def)
{
        int i;
        socklen_t l;
        unsigned u;

        l = sizeof u;
        i = getsockopt(sock, IPPROTO_TCP, nam, &u, &l);
        if (i < 0 || u == 0)
                u = def;
        MCF_ParamConf(MCF_DEFAULT, param, "%u", u);
}

static void
tcp_keep_probes(void)
{
        const char *err;
        int s;

        s = VTCP_listen_on(":0", NULL, 10, &err);
        if (err != NULL)
                ARGV_ERR("Could not probe TCP keepalives: %s", err);
        assert(s > 0);
#ifdef HAVE_TCP_KEEP
        tcp_probe(s, TCP_KEEPIDLE, "tcp_keepalive_time",        600);
        tcp_probe(s, TCP_KEEPCNT, "tcp_keepalive_probes",       5);
        tcp_probe(s, TCP_KEEPINTVL, "tcp_keepalive_intvl",      5);
#else
        tcp_probe(s, TCP_KEEPALIVE, "tcp_keepalive_time",       600);
#endif
        closefd(&s);
}
#endif

void
MCF_TcpParams(void)
{
#if defined(HAVE_TCP_KEEP) || defined(HAVE_TCP_KEEPALIVE)
        tcp_keep_probes();
#endif
}

		varnish-cache/bin/varnishd/mgt/mgt_param_tcp.c
0		/*-
1		* Copyright (c) 2006 Verdens Gang AS
2		* Copyright (c) 2006-2015 Varnish Software AS
3		* All rights reserved.
4		*
5		* Author: Poul-Henning Kamp <phk@phk.freebsd.dk>
6		*
7		* SPDX-License-Identifier: BSD-2-Clause
8		*
9		* Redistribution and use in source and binary forms, with or without
10		* modification, are permitted provided that the following conditions
11		* are met:
12		* 1. Redistributions of source code must retain the above copyright
13		* notice, this list of conditions and the following disclaimer.
14		* 2. Redistributions in binary form must reproduce the above copyright
15		* notice, this list of conditions and the following disclaimer in the
16		* documentation and/or other materials provided with the distribution.
17		*
18		* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19		* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20		* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21		* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
22		* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23		* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24		* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25		* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26		* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27		* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28		* SUCH DAMAGE.
29		*
30		* Parameters related to TCP keepalives are not universally available
31		* as socket options, and probing for system-wide defaults more appropriate
32		* than our own involves slightly too much grunt-work to be negligible
33		* so we sequestrate that code here.
34		*/
35
36		#include "config.h"
37
38		#include <sys/types.h>
39		#include <sys/socket.h>
40		#include <stdio.h>
41		#include <stdlib.h>
42		#include <netinet/in.h>
43		#include <netinet/tcp.h>
44		#include <unistd.h>
45
46		#include "mgt/mgt.h"
47		#include "common/heritage.h"
48
49		#include "vtcp.h"
50
51		#if defined(HAVE_TCP_KEEP) \|\| defined(HAVE_TCP_KEEPALIVE)
52
53		static void
54	122400	tcp_probe(int sock, int nam, const char *param, unsigned def)
55		{
56		int i;
57		socklen_t l;
58		unsigned u;
59
60	122400	l = sizeof u;
61	122400	i = getsockopt(sock, IPPROTO_TCP, nam, &u, &l);
62	122400	if (i < 0 \|\| u == 0)
63	0	u = def;
64	122400	MCF_ParamConf(MCF_DEFAULT, param, "%u", u);
65	122400	}
66
67		static void
68	40800	tcp_keep_probes(void)
69		{
70		const char *err;
71		int s;
72
73	40800	s = VTCP_listen_on(":0", NULL, 10, &err);
74	40800	if (err != NULL)
75	0	ARGV_ERR("Could not probe TCP keepalives: %s", err);
76	40800	assert(s > 0);
77		#ifdef HAVE_TCP_KEEP
78	40800	tcp_probe(s, TCP_KEEPIDLE, "tcp_keepalive_time", 600);
79	40800	tcp_probe(s, TCP_KEEPCNT, "tcp_keepalive_probes", 5);
80	40800	tcp_probe(s, TCP_KEEPINTVL, "tcp_keepalive_intvl", 5);
81		#else
82		tcp_probe(s, TCP_KEEPALIVE, "tcp_keepalive_time", 600);
83		#endif
84	40800	closefd(&s);
85	40800	}
86		#endif
87
88		void
89	40800	MCF_TcpParams(void)
90		{
91		#if defined(HAVE_TCP_KEEP) \|\| defined(HAVE_TCP_KEEPALIVE)
92	40800	tcp_keep_probes();
93		#endif
94	40800	}