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UDP Class
Methods documented for WiFiUDP Class in Arduino
- begin()
- available()
- beginPacket()
- endPacket()
- write()
- parsePacket()
- peek()
- read()
- flush()
- stop()
- remoteIP()
- remotePort()
Methods and properties described further down are specific to ESP8266. They are not covered in Arduino WiFi library documentation. Before they are fully documented please refer to information below.
Multicast UDP
uint8_t beginMulticast (IPAddress interfaceAddr, IPAddress multicast, uint16_t port)
virtual int beginPacketMulticast (IPAddress multicastAddress, uint16_t port, IPAddress interfaceAddress, int ttl=1)
IPAddress destinationIP ()
uint16_t localPort ()The WiFiUDP class supports sending and receiving
multicast packets on STA interface. When sending a multicast packet,
replace udp.beginPacket(addr, port) with
udp.beginPacketMulticast(addr, port, WiFi.localIP()). When
listening to multicast packets, replace udp.begin(port)
with
udp.beginMulticast(WiFi.localIP(), multicast_ip_addr, port).
You can use udp.destinationIP() to tell whether the packet
received was sent to the multicast or unicast address.
For code samples please refer to separate section with examples dedicated specifically to the UDP Class.