[Ethernet]
説明
Gets a client that is connected to the server and has data available for reading. The connection persists when the returned client object goes out of scope; you can close it by calling client.stop()
.
available()
inherits from the Stream utility class.
Syntax
// telnet defaults to port EthernetServer server = EthernetServer(int); server.available()
Parameters
None
Returns
a Client object; if no Client has data available for reading, this object will evaluate to false in an if-statement (see the example below)
Example
#include <Ethernet.h> //the IP address: 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(NULL, 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 == true) { // read bytes from the incoming client and write them back // to any clients connected to the server: server.write(client.read()); } }
See Also
Libraries Reference Home
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