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.\" ========================================================================
.\"
.IX Title "ping_host_add 3"
.TH ping_host_add 3 "2017-05-11" "1.10.0" "liboping"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
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.nh
.SH "NAME"
ping_host_add \- Add a host to a liboping object
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\&  #include <oping.h>
\&
\&  int ping_host_add    (pingobj_t *obj, const char *host);
\&  int ping_host_remove (pingobj_t *obj, const char *host);
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
The \fBping_host_add\fR method tries to resolve the \fIhost\fR argument, open a
socket and associate everything with the liboping object \fIobj\fR.
.PP
The \fIobj\fR argument is a pointer to an liboping object, as returned by
\&\fIping_construct\fR\|(3).
.PP
The \fIhost\fR parameter is a '\e0' terminated string which is interpreted as a
hostname or an \s-1IP\s0 address. Depending on the address family setting, set with
\&\fIping_setopt\fR\|(3), the hostname is resolved to an IPv4 or IPv6 address.
.PP
The \fBping_host_remove\fR method looks for \fIhost\fR within \fIobj\fR and remove it if
found. It will close the socket and deallocate the memory, too.
.PP
The names passed to \fBping_host_add\fR and \fBping_host_remove\fR must match. This
name can be queried using \fIping_iterator_get_info\fR\|(3).
.SH "RETURN VALUE"
.IX Header "RETURN VALUE"
If \fBping_host_add\fR succeeds it returns zero. If an error occurs a value less
than zero is returned and the last error is saved internally. You can receive
the error message using \fIping_get_error\fR\|(3).
.PP
\&\fBping_host_remove\fR returns zero upon success and less than zero if it failed.
Currently the only reason for failure is that the host isn't found, but this is
subject to change. Use \fIping_get_error\fR\|(3) to receive the error message.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fIping_construct\fR\|(3),
\&\fIping_setopt\fR\|(3),
\&\fIping_get_error\fR\|(3),
\&\fIliboping\fR\|(3)
.SH "AUTHOR"
.IX Header "AUTHOR"
liboping is written by Florian \*(L"octo\*(R" Forster <ff at octo.it>.
Its homepage can be found at <http://noping.cc/>.
.PP
Copyright (c) 2006\-2017 by Florian \*(L"octo\*(R" Forster.