Arduino - EthernetUDPRemoteIP

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Ethernet : UDP.remoteIP()

#### Description

Gets the IP address of the remote connection.

This function must be called after UDP.parsePacket().

#### Syntax

UDP.remoteIP();

#### Parameters

None

#### Returns

4 bytes : the IP address of the remote connection

#### Example

#include <SPI.h>
#include <Ethernet.h>
#include <EthernetUdp.h>
// Enter a MAC address and IP address for your controller below.
// The IP address will be dependent on your local network:
byte mac[] = {
0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
IPAddress ip(192, 168, 1, 177);
unsigned int localPort = 8888; // local port to listen on
// An EthernetUDP instance to let us send and receive packets over UDP
EthernetUDP Udp;
void setup() {
// start the Ethernet and UDP:
Ethernet.begin(mac,ip);
Udp.begin(localPort);
}
void loop() {
int packetSize = Udp.parsePacket();
if(packetSize)
{
Serial.print("Received packet of size ");
Serial.println(packetSize);
Serial.print("From IP : ");
IPAddress remote = Udp.remoteIP();
//print out the remote connection's IP address
Serial.print(remote);
Serial.print(" on port : ");
//print out the remote connection's port
Serial.println(Udp.remotePort());
}
}
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The text of the Arduino reference is licensed under a Creative Commons Attribution-ShareAlike 3.0 License. Code samples in the reference are released into the public domain.

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