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127 lines
4.4 KiB
HTML
127 lines
4.4 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html>
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<head>
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<title>Arduino - ClientAvailable </title>
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<link rel='stylesheet' href='arduino.css' type='text/css' />
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<meta name="verify-v1" content="TtxFIEJAB6zdJ509wLxjnapQzKAMNm9u0Wj4ho6wxIY=" />
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</head>
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<body>
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<div id="page">
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<!--PageHeaderFmt-->
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<div id="pageheader">
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<div class="title"><a href="http://www.arduino.cc"/>Arduino</a></div>
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<div class="search">
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<!-- SiteSearch Google -->
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<FORM method=GET action="http://www.google.com/search">
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<input type=hidden name=ie value=UTF-8>
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<input type=hidden name=oe value=UTF-8>
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<INPUT TYPE=text name=q size=25 maxlength=255 value="">
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<INPUT type=submit name=btnG VALUE="search">
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<input type=hidden name=domains value="http://www.arduino.cc/">
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<input type=hidden name=sitesearch value="http://www.arduino.cc/">
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</FORM>
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<!-- SiteSearch Google -->
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</div>
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</div>
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<!--/PageHeaderFmt-->
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<!--PageLeftFmt-->
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<div id="pagenav" style="text-align: right">
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<div style="float: left;">
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<p><a class='wikilink' href='http://arduino.cc/en/Main/Buy'>Buy</a>
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<a class='wikilink' href='http://arduino.cc/en/Main/Software'>Download</a>
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<a class='wikilink' href='Guide_index.html'>Getting Started</a>
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<a class='wikilink' href='http://arduino.cc/en/Tutorial/HomePage'>Learning</a>
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<a class='wikilink' href='index.html'>Reference</a>
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<a class='wikilink' href='http://arduino.cc/en/Main/Hardware'>Hardware</a>
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<a class='wikilink' href='FAQ.html'>FAQ</a>
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</p>
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<p class='vspace'></p>
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</div>
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<a class="urllink" href="http://www.arduino.cc/blog/" rel="nofollow">Blog »</a> |
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<a class="urllink" href="http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl" rel="nofollow">Forum »</a> |
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<a class="urllink" href="http://www.arduino.cc/playground/" rel="nofollow">Playground »</a>
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</div>
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<!--/PageLeftFmt-->
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<div id="pagetext">
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<!--PageText-->
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<div id='wikitext'>
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<p><strong>Reference</strong> <a class='wikilink' href='index.html'>Language</a> (<a class='wikilink' href='Extended.html'>extended</a>) | <a class='wikilink' href='Libraries.html'>Libraries</a> | <a class='wikilink' href='Comparison.html'>Comparison</a> | <a class='wikilink' href='Changes.html'>Changes</a>
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</p>
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<p class='vspace'></p><p><a class='wikilink' href='Ethernet.html'>Ethernet</a> : <em>Client</em> class
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</p>
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<p class='vspace'></p><h2>available()</h2>
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<h4>Description</h4>
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<p>Returns the number of bytes available for reading (that is, the amount of data that has been written to the client by the server it is connected to).
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</p>
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<p class='vspace'></p><h4>Syntax</h4>
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<p><em>client</em>.available()
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</p>
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<p class='vspace'></p><h4>Parameters</h4>
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<p>none
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</p>
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<p class='vspace'></p><h4>Returns</h4>
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<p>The number of bytes available.
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</p>
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<p class='vspace'></p><pre>
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#include <Ethernet.h>
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byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
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byte ip[] = { 10, 0, 0, 177 };
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byte server[] = { 64, 233, 187, 99 }; // Google
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Client client(server, 80);
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void setup()
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{
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Ethernet.begin(mac, ip);
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Serial.begin(9600);
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delay(1000);
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Serial.println("connecting...");
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if (client.connect()) {
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Serial.println("connected");
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client.println("GET /search?q=arduino HTTP/1.0");
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client.println();
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} else {
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Serial.println("connection failed");
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}
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}
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void loop()
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{
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if (client.available()) {
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char c = client.read();
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Serial.print(c);
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}
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if (!client.connected()) {
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Serial.println();
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Serial.println("disconnecting.");
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client.stop();
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for(;;)
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;
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}
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}
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</pre>
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<p class='vspace'></p><p><a class='wikilink' href='index.html'>Reference Home</a>
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</p>
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<p class='vspace'></p><p><em>Corrections, suggestions, and new documentation should be posted to the <a class='urllink' href='http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?board=swbugs' rel='nofollow'>Forum</a>.</em>
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</p>
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<p class='vspace'></p><p>The text of the Arduino reference is licensed under a
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<a class='urllink' href='http://creativecommons.org/licenses/by-sa/3.0/' rel='nofollow'>Creative Commons Attribution-ShareAlike 3.0 License</a>. Code samples in the reference are released into the public domain.
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</p>
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</div>
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</div>
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<!--PageFooterFmt-->
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<div id="pagefooter">
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<a href='#'>Edit Page</a> | <a href='#'>Page History</a> | <a href='#' target='_blank'>Printable View</a> | <a href='http://arduino.cc/en/Site/AllRecentChanges'>All Recent Site Changes</a>
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</div>
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<!--/PageFooterFmt-->
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</div>
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</body>
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</html>
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