1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
|
// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "socket_options.h"
#include <fcntl.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <string.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <unistd.h>
namespace vespalib {
namespace {
bool set_bool_opt(int fd, int level, int name, bool value) {
int data = value;
return (setsockopt(fd, level, name, &data, sizeof(data)) == 0);
}
} // namespace vespalib::<unnamed>
bool
SocketOptions::set_blocking(int fd, bool value)
{
int flags = fcntl(fd, F_GETFL, NULL);
if (flags != -1) {
if (value) {
flags &= ~O_NONBLOCK; // clear non-blocking flag
} else {
flags |= O_NONBLOCK; // set non-blocking flag
}
return (fcntl(fd, F_SETFL, flags) == 0);
}
return false;
}
bool
SocketOptions::set_nodelay(int fd, bool value)
{
return set_bool_opt(fd, IPPROTO_TCP, TCP_NODELAY, value);
}
bool
SocketOptions::set_reuse_addr(int fd, bool value)
{
return set_bool_opt(fd, SOL_SOCKET, SO_REUSEADDR, value);
}
bool
SocketOptions::set_ipv6_only(int fd, bool value)
{
return set_bool_opt(fd, IPPROTO_IPV6, IPV6_V6ONLY, value);
}
bool
SocketOptions::set_keepalive(int fd, bool value)
{
return set_bool_opt(fd, SOL_SOCKET, SO_KEEPALIVE, value);
}
bool
SocketOptions::set_linger(int fd, bool enable, int value)
{
struct linger data;
memset(&data, 0, sizeof(data));
data.l_onoff = enable;
data.l_linger = value;
return (setsockopt(fd, SOL_SOCKET, SO_LINGER, &data, sizeof(data)) == 0);
}
} // namespace vespalib
|
