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reference:library:available

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reference:library:available [2017/04/07 10:03] (当前版本)
行 1: 行 1:
 +====== available() ======
  
 +
 +===== 描述 =====
 +
 +
 +连接客户端,获取连接到服务器的客户端的数据,连接一直保持直到连接的客户端超出范围。你可以使用client.stop()关闭它。
 +
 +==== 语法 ====
 +
 +
 +server.available()
 +
 +=== 参数 ===
 +
 +
 +None
 +
 +== 返回 ==
 +
 +
 +
 +客户端对象,如果没有客户端有数据需要读取,这个对象会关闭。
 +
 +== 例子 ==
 +
 +<code cpp>
 +#include <​Ethernet.h>​
 +#include <​SPI.h>​
 +
 +// the media access control (ethernet hardware) address for the shield:
 +byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };  ​
 +//the IP address for the shield:
 +byte ip[] = { 10, 0, 0, 177 };    ​
 +// the router'​s gateway address:
 +byte gateway[] = { 10, 0, 0, 1 };
 +// the subnet:
 +byte subnet[] = { 255, 255, 0, 0 };
 +
 +
 +// telnet defaults to port 23
 +EthernetServer server = EthernetServer(23);​
 +
 +void setup()
 +{
 +  // initialize the ethernet device
 +  Ethernet.begin(mac,​ ip, gateway, subnet);
 +
 +  // start listening for clients
 +  server.begin();​
 +}
 +
 +void loop()
 +{
 +  // if an incoming client connects, there will be bytes available to read:
 +  EthernetClient client = server.available();​
 +  if (client) {
 +    // read bytes from the incoming client and write them back
 +    // to any clients connected to the server:
 +    server.write(client.read());​
 +  }
 +}</​code>​
reference/library/available.txt · 最后更改: 2017/04/07 10:03 (外部编辑)