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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 3.2//EN">
<html>
<head>
<title>FtpOptions</title>
<link rel="stylesheet" type="text/css" href="doc.css">
</head>
<body>
<h1>FtpOptions</h1>
<p>Set connection options.</p>
<h2>SYNOPSIS</h2>
<pre>
#include <ftplib.h>
int FtpOptions(int opt, long val, netbuf *nControl);
</pre>
<h2>PARAMETERS</h2>
<dl>
<dt><b>opt</b></dt>
<dd>Specifies the option to change. Valid options are
FTPLIB_CONNMODE, FTPLIB_CALLBACK, FTPLIB_IDLETIME,
FTPLIB_CALLBACKARG, and FTPLIB_CALLBACKBYTES.</dd>
<dt><b>val</b></dt>
<dd>Specifies the new value for the option. The value may need to
by cast to a long.</dd>
<dt><b>nControl</b></dt>
<dd>A handle returned by <a href="FtpConnect.html">FtpConnect()</a>
or <a href="FtpAccess.html">FtpAccess()</a>.</dd>
</dl>
<h2>DESCRIPTION</h2>
<p>FtpOptions() changes the options for a connection handle. A data
connection inherits the options assigned to the control connection
it is created from. Callbacks are only called on file data
connections.</p>
<p>New programs should
call <a href="FtpSetCallback.html">FtpSetCallback()</a>
and <a href="FtpClearCallback.html">FtpClearCallback()</a> to change
callback options.</p>
<p>The following options and values are recognized.</p>
<dl>
<dt>FTPLIB_CONNMODE</dt>
<dd>Specifies the connection mode. Either FTPLIB_PASSIVE or
FTPLIB_PORT.</dd>
<dt>FTPLIB_CALLBACK (deprecated)</dt>
<dd>Specifies the address of a user callback routine.</dd>
<dt>FTPLIB_IDLETIME (deprecated)</dt>
<dd>Specifies the socket idle time in milliseconds that triggers
calling the user's callback routine.</dd>
<dt>FTPLIB_CALLBACKARG (deprecated)</dt>
<dd>Specifies an argument to pass to the user's callback
routine.</dd>
<dt>FTPLIB_CALLBACKBYTES (deprecated)</dt>
<dd>Specifies the number of bytes to transfer between calls to the
user's callback routine.</dd>
</dl>
<p>The connection mode tells ftplib if it should use PASV or PORT
to establish data connections. The default is specified as a build
option.</p>
<p>See <a href="FtpSetCallback.html">FtpSetCallback()</a> for a
description of using callbacks.</p>
<h2>RETURN VALUE</h2>
<p>Returns 1 if a valid option was specified and the value is
legal. Otherwise, returns 0.</p>
</body>
</html>
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