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| author | Ben Greear <greearb@candelatech.com> | 2010-07-18 23:58:39 +0200 |
|---|---|---|
| committer | Daniel Stenberg <daniel@haxx.se> | 2010-07-18 23:58:39 +0200 |
| commit | e3b04e5a4796215d2483aba3cb75c72ba337ac14 (patch) | |
| tree | 3671ebcef566e0e32f00a50b0557b88bd8b67475 /ares_set_local_dev.3 | |
| parent | 45a09b7efba9665bdc08e227f4baf51fab3862ae (diff) | |
| download | c-ares-e3b04e5a4796215d2483aba3cb75c72ba337ac14.tar.gz c-ares-e3b04e5a4796215d2483aba3cb75c72ba337ac14.tar.bz2 c-ares-e3b04e5a4796215d2483aba3cb75c72ba337ac14.zip | |
local-bind: Support binding to local interface/IPs
Add 3 new functions to set the local binding for the out-going
socket connection, and add ares_set_servers_csv() to set a
list of servers at once as a comma-separated string.
Signed-off-by: Ben Greear <greearb@candelatech.com>
Diffstat (limited to 'ares_set_local_dev.3')
| -rw-r--r-- | ares_set_local_dev.3 | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/ares_set_local_dev.3 b/ares_set_local_dev.3 new file mode 100644 index 0000000..b967c89 --- /dev/null +++ b/ares_set_local_dev.3 @@ -0,0 +1,39 @@ +.\" +.\" Copyright 2010 by Ben Greear <greearb@candelatech.com> +.\" +.\" Permission to use, copy, modify, and distribute this +.\" software and its documentation for any purpose and without +.\" fee is hereby granted, provided that the above copyright +.\" notice appear in all copies and that both that copyright +.\" notice and this permission notice appear in supporting +.\" documentation, and that the name of M.I.T. not be used in +.\" advertising or publicity pertaining to distribution of the +.\" software without specific, written prior permission. +.\" M.I.T. makes no representations about the suitability of +.\" this software for any purpose. It is provided "as is" +.\" without express or implied warranty. +.\" +.TH ARES_SET_LOCAL_DEV 3 "30 June 2010" +.SH NAME +ares_set_local_dev \- Bind to a specific network device when creating sockets. +.SH SYNOPSIS +.nf +.B #include <ares.h> +.PP +.B void ares_set_local_dev(ares_channel \fIchannel\fP, const char* \fIlocal_dev_name\fP) +.fi +.SH DESCRIPTION +The \fBares_set_local_dev\fP function causes all future sockets +to be bound to this device with SO_BINDTODEVICE. This forces communications +to go over a certain interface, which can be useful on multi-homed machines. +This option is only supported on Linux, and root priviledges are required +for the option to work. If SO_BINDTODEVICE is not supported or the +setsocktop call fails (probably because of permissions), the error is +silently ignored. +.SH SEE ALSO +.BR ares_set_local_ipv4 (3) +.BR ares_set_local_ipv6 (3) +.SH NOTES +This function was added in c-ares 1.7.2 +.SH AUTHOR +Ben Greear |