EthernetUDP.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 <Ethernet.h>
#include <EthernetUdp.h>

// Enter an IP address for your controller below.
// The IP address will be dependent on your local network:
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(NULL,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 86Duino reference is a modification of the Arduino reference, and is licensed under a Creative Commons Attribution-ShareAlike 3.0 License. Code samples in the reference are released into the public domain.