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<title>Networking Utilities - Untitled</title>
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<hr>
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<h3 class="section">34.4 Networking Utilities</h3>
<!-- ./DLD-FUNCTIONS/urlwrite.cc -->
<p><a name="doc_002durlread"></a>
<div class="defun">
— Loadable Function: <var>s</var> = <b>urlread</b> (<var>url</var>)<var><a name="index-urlread-2363"></a></var><br>
— Loadable Function: [<var>s</var>, <var>success</var>] = <b>urlread</b> (<var>url</var>)<var><a name="index-urlread-2364"></a></var><br>
— Loadable Function: [<var>s</var>, <var>success</var>, <var>message</var>] = <b>urlread</b> (<var>url</var>)<var><a name="index-urlread-2365"></a></var><br>
— Loadable Function: [<small class="dots">...</small>] = <b>urlread</b> (<var>url, method, param</var>)<var><a name="index-urlread-2366"></a></var><br>
<blockquote><p>Download a remote file specified by its <var>URL</var> and return its content
in string <var>s</var>. For example,
<pre class="example"> s = urlread ("ftp://ftp.octave.org/pub/octave/README");
</pre>
<p>The variable <var>success</var> is 1 if the download was successful,
otherwise it is 0 in which case <var>message</var> contains an error
message. If no output argument is specified and if an error occurs,
then the error is signaled through Octave's error handling mechanism.
<p>This function uses libcurl. Curl supports, among others, the HTTP,
FTP and FILE protocols. Username and password may be specified in the
URL. For example,
<pre class="example"> s = urlread ("http://user:password@example.com/file.txt");
</pre>
<p>GET and POST requests can be specified by <var>method</var> and <var>param</var>.
The parameter <var>method</var> is either ‘<samp><span class="samp">get</span></samp>’ or ‘<samp><span class="samp">post</span></samp>’
and <var>param</var> is a cell array of parameter and value pairs.
For example,
<pre class="example"> s = urlread ("http://www.google.com/search", "get",
{"query", "octave"});
</pre>
<!-- Texinfo @sp should work but in practice produces ugly results for HTML. -->
<!-- A simple blank line produces the correct behavior. -->
<!-- @sp 1 -->
<p class="noindent"><strong>See also:</strong> <a href="doc_002durlwrite.html#doc_002durlwrite">urlwrite</a>.
</p></blockquote></div>
<!-- ./DLD-FUNCTIONS/urlwrite.cc -->
<p><a name="doc_002durlwrite"></a>
<div class="defun">
— Loadable Function: <b>urlwrite</b> (<var>URL, localfile</var>)<var><a name="index-urlwrite-2367"></a></var><br>
— Loadable Function: <var>f</var> = <b>urlwrite</b> (<var>url, localfile</var>)<var><a name="index-urlwrite-2368"></a></var><br>
— Loadable Function: [<var>f</var>, <var>success</var>] = <b>urlwrite</b> (<var>url, localfile</var>)<var><a name="index-urlwrite-2369"></a></var><br>
— Loadable Function: [<var>f</var>, <var>success</var>, <var>message</var>] = <b>urlwrite</b> (<var>url, localfile</var>)<var><a name="index-urlwrite-2370"></a></var><br>
<blockquote><p>Download a remote file specified by its <var>URL</var> and save it as
<var>localfile</var>. For example,
<pre class="example"> urlwrite ("ftp://ftp.octave.org/pub/octave/README",
"README.txt");
</pre>
<p>The full path of the downloaded file is returned in <var>f</var>. The
variable <var>success</var> is 1 if the download was successful,
otherwise it is 0 in which case <var>message</var> contains an error
message. If no output argument is specified and if an error occurs,
then the error is signaled through Octave's error handling mechanism.
<p>This function uses libcurl. Curl supports, among others, the HTTP,
FTP and FILE protocols. Username and password may be specified in
the URL, for example:
<pre class="example"> urlwrite ("http://username:password@example.com/file.txt",
"file.txt");
</pre>
<p>GET and POST requests can be specified by <var>method</var> and <var>param</var>.
The parameter <var>method</var> is either ‘<samp><span class="samp">get</span></samp>’ or ‘<samp><span class="samp">post</span></samp>’
and <var>param</var> is a cell array of parameter and value pairs.
For example:
<pre class="example"> urlwrite ("http://www.google.com/search", "search.html",
"get", {"query", "octave"});
</pre>
<!-- Texinfo @sp should work but in practice produces ugly results for HTML. -->
<!-- A simple blank line produces the correct behavior. -->
<!-- @sp 1 -->
<p class="noindent"><strong>See also:</strong> <a href="doc_002durlread.html#doc_002durlread">urlread</a>.
</p></blockquote></div>
</body></html>
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