nut/docs/man/libnutclient_tcp.3

'\" t
.\"     Title: libnutclient_tcp
.\"    Author: [FIXME: author] [see http://www.docbook.org/tdg5/en/html/author]
.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
.\"      Date: 04/26/2022
.\"    Manual: NUT Manual
.\"    Source: Network UPS Tools 2.8.0
.\"  Language: English
.\"
.TH "LIBNUTCLIENT_TCP" "3" "04/26/2022" "Network UPS Tools 2\&.8\&.0" "NUT Manual"
.\" -----------------------------------------------------------------
.\" * Define some portability stuff
.\" -----------------------------------------------------------------
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.\" http://bugs.debian.org/507673
.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.ie \n(.g .ds Aq \(aq
.el       .ds Aq '
.\" -----------------------------------------------------------------
.\" * set default formatting
.\" -----------------------------------------------------------------
.\" disable hyphenation
.nh
.\" disable justification (adjust text to left margin only)
.ad l
.\" -----------------------------------------------------------------
.\" * MAIN CONTENT STARTS HERE *
.\" -----------------------------------------------------------------
.SH "NAME"
libnutclient_tcp, nutclient_tcp_create_client, nutclient_tcp_is_connected, nutclient_tcp_disconnect, nutclient_tcp_reconnect, nutclient_tcp_set_timeout, nutclient_tcp_get_timeout \- TCP protocol related function for Network UPS Tools high\-level client access library
.SH "SYNOPSIS"
.sp
.nf
#include <nutclient\&.h>
#include <cstdint> /* uint16_t */
#include <ctime> /* time_t */
.fi
.sp
.nf
typedef NUTCLIENT_t NUTCLIENT_TCP_t;
.fi
.sp
.nf
NUTCLIENT_TCP_t nutclient_tcp_create_client(
        const char* host, uint16_t port);
.fi
.sp
.nf
int nutclient_tcp_is_connected(NUTCLIENT_TCP_t client);
.fi
.sp
.nf
void nutclient_tcp_disconnect(NUTCLIENT_TCP_t client);
.fi
.sp
.nf
int nutclient_tcp_reconnect(NUTCLIENT_TCP_t client);
.fi
.sp
.nf
void nutclient_tcp_set_timeout(NUTCLIENT_TCP_t client, time_t timeout);
.fi
.sp
.nf
time_t nutclient_tcp_get_timeout(NUTCLIENT_TCP_t client);
.fi
.SH "DESCRIPTION"
.sp
These functions allow to manage connections to \fBupsd\fR(8) using NUT TCP protocol\&.
.sp
The \fBnutclient_tcp_create_client()\fR function create the \fINUTCLIENT_TCP_t\fR context and intend to connect to upsd at \fIhost\fR and \fIport\fR\&. The context must be freed by \fInutclient_destroy()\fR
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
\fIhost\fR
can be a sever name or a valid IPv4 or IPv6 address like "localhost", "127\&.0\&.0\&.1" or "::1"\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
\fIport\fR
is a valid TCP port, generally 3493\&.
.RE
.sp
The \fBnutclient_tcp_is_connected()\fR function test if the connection is valid\&.
.sp
The \fBnutclient_tcp_disconnect()\fR function force to disconnect the specified connection\&.
.sp
The \fBnutclient_tcp_reconnect()\fR function force to reconnect a connection, disconnecting it if needed\&.
.sp
The \fBnutclient_tcp_set_timeout()\fR function set the timeout duration for I/O operations\&.
.sp
The \fBnutclient_tcp_get_timeout()\fR function retrieve the timeout duration for I/O operations\&.
.sp
\fItimeout\fR values are specified in seconds, negatives values for blocking\&.
.SH "SEE ALSO"
.sp
\fBlibnutclient\fR(3) \fBlibnutclient_general\fR(3)