1ZIFLIST(3)                        CZMQ Manual                       ZIFLIST(3)
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NAME

6       ziflist - Class for list of network interfaces available on system
7

SYNOPSIS

9       //  This is a stable class, and may not change except for emergencies. It
10       //  is provided in stable builds.
11       //  This class has draft methods, which may change over time. They are not
12       //  in stable releases, by default. Use --enable-drafts to enable.
13       //  Get a list of network interfaces currently defined on the system
14       CZMQ_EXPORT ziflist_t *
15           ziflist_new (void);
16
17       //  Destroy a ziflist instance
18       CZMQ_EXPORT void
19           ziflist_destroy (ziflist_t **self_p);
20
21       //  Reload network interfaces from system
22       CZMQ_EXPORT void
23           ziflist_reload (ziflist_t *self);
24
25       //  Return the number of network interfaces on system
26       CZMQ_EXPORT size_t
27           ziflist_size (ziflist_t *self);
28
29       //  Get first network interface, return NULL if there are none
30       CZMQ_EXPORT const char *
31           ziflist_first (ziflist_t *self);
32
33       //  Get next network interface, return NULL if we hit the last one
34       CZMQ_EXPORT const char *
35           ziflist_next (ziflist_t *self);
36
37       //  Return the current interface IP address as a printable string
38       CZMQ_EXPORT const char *
39           ziflist_address (ziflist_t *self);
40
41       //  Return the current interface broadcast address as a printable string
42       CZMQ_EXPORT const char *
43           ziflist_broadcast (ziflist_t *self);
44
45       //  Return the current interface network mask as a printable string
46       CZMQ_EXPORT const char *
47           ziflist_netmask (ziflist_t *self);
48
49       //  Return the list of interfaces.
50       CZMQ_EXPORT void
51           ziflist_print (ziflist_t *self);
52
53       //  Self test of this class.
54       CZMQ_EXPORT void
55           ziflist_test (bool verbose);
56
57       #ifdef CZMQ_BUILD_DRAFT_API
58       //  *** Draft method, for development use, may change without warning ***
59       //  Get a list of network interfaces currently defined on the system
60       //  Includes IPv6 interfaces
61       //  Caller owns return value and must destroy it when done.
62       CZMQ_EXPORT ziflist_t *
63           ziflist_new_ipv6 (void);
64
65       //  *** Draft method, for development use, may change without warning ***
66       //  Reload network interfaces from system, including IPv6
67       CZMQ_EXPORT void
68           ziflist_reload_ipv6 (ziflist_t *self);
69
70       //  *** Draft method, for development use, may change without warning ***
71       //  Return true if the current interface uses IPv6
72       CZMQ_EXPORT bool
73           ziflist_is_ipv6 (ziflist_t *self);
74
75       #endif // CZMQ_BUILD_DRAFT_API
76       Please add '@interface' section in './../src/ziflist.c'.
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DESCRIPTION

79       The ziflist class takes a snapshot of the network interfaces that the
80       system currently supports (this can change arbitrarily, especially on
81       mobile devices). The caller can then access the network interface
82       information using an iterator that works like zlistx. Only stores those
83       interfaces with broadcast capability, and ignores the loopback
84       interface.
85
86       Please add @discuss section in ./../src/ziflist.c.
87

EXAMPLE

89       From ziflist_test method.
90
91           ziflist_t *iflist = ziflist_new ();
92           assert (iflist);
93
94           size_t items = ziflist_size (iflist);
95
96           if (verbose) {
97               printf ("ziflist: interfaces=%zu\n", ziflist_size (iflist));
98               const char *name = ziflist_first (iflist);
99               while (name) {
100                   printf (" - name=%s address=%s netmask=%s broadcast=%s\n",
101                           name, ziflist_address (iflist), ziflist_netmask (iflist), ziflist_broadcast (iflist));
102                   name = ziflist_next (iflist);
103               }
104           }
105           ziflist_reload (iflist);
106           assert (items == ziflist_size (iflist));
107           ziflist_destroy (&iflist);
108
109           #if defined (__WINDOWS__)
110           zsys_shutdown();
111           #endif
112
113

AUTHORS

115       The czmq manual was written by the authors in the AUTHORS file.
116

RESOURCES

118       Main web site:
119
120       Report bugs to the email <zeromq-dev@lists.zeromq.org[1]>
121

123       Copyright (c) the Contributors as noted in the AUTHORS file. This file
124       is part of CZMQ, the high-level C binding for 0MQ:
125       http://czmq.zeromq.org. This Source Code Form is subject to the terms
126       of the Mozilla Public License, v. 2.0. If a copy of the MPL was not
127       distributed with this file, You can obtain one at
128       http://mozilla.org/MPL/2.0/. LICENSE included with the czmq
129       distribution.
130

NOTES

132        1. zeromq-dev@lists.zeromq.org
133           mailto:zeromq-dev@lists.zeromq.org
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137CZMQ 4.2.1                        02/01/2021                        ZIFLIST(3)
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