UDP methods to allow joining or leaving multicast group

[rom1sqr]

Hi everyone.
Just a couple of methods in WiFiUdp to allow users to join or leave Multicast groups.
Thanks!

[CLAassistant]

All committers have signed the CLA.

[github-actions]

Memory usage change @ 68676a1

Board	flash	%	RAM for global variables	%
Intel:arc32:arduino_101	🔺 0 - +100	0.0 - +0.06	N/A	N/A
arduino:avr:mega	🔺 0 - +274	0.0 - +0.11	🔺 0 - +4	0.0 - +0.05
arduino:avr:uno	🔺 0 - +272	0.0 - +0.84	🔺 0 - +4	0.0 - +0.2
arduino:sam:arduino_due_x_dbg	🔺 0 - +88	0.0 - +0.02	N/A	N/A
arduino:samd:arduino_zero_edbg	🔺 0 - +96	0.0 - +0.04	0 - 0	0.0 - 0.0
arduino:samd:mkr1000	🔺 0 - +96	0.0 - +0.04	0 - 0	0.0 - 0.0

Click for full report table

Board	examples/AP_SimpleWebServer flash	%	examples/AP_SimpleWebServer RAM for global variables	%	examples/CheckWifi101FirmwareVersion flash	%	examples/CheckWifi101FirmwareVersion RAM for global variables	%	examples/ConnectNoEncryption flash	%	examples/ConnectNoEncryption RAM for global variables	%	examples/ConnectWithWEP flash	%	examples/ConnectWithWEP RAM for global variables	%	examples/ConnectWithWPA flash	%	examples/ConnectWithWPA RAM for global variables	%	examples/MDNS_WiFiWebServer flash	%	examples/MDNS_WiFiWebServer RAM for global variables	%	examples/Provisioning_WiFiWebServer flash	%	examples/Provisioning_WiFiWebServer RAM for global variables	%	examples/ScanNetworks flash	%	examples/ScanNetworks RAM for global variables	%	examples/ScanNetworksAdvanced flash	%	examples/ScanNetworksAdvanced RAM for global variables	%	examples/SimpleWebServerWiFi flash	%	examples/SimpleWebServerWiFi RAM for global variables	%	examples/WiFiChatServer flash	%	examples/WiFiChatServer RAM for global variables	%	examples/WiFiPing flash	%	examples/WiFiPing RAM for global variables	%	examples/WiFiSSLClient flash	%	examples/WiFiSSLClient RAM for global variables	%	examples/WiFiUdpNtpClient flash	%	examples/WiFiUdpNtpClient RAM for global variables	%	examples/WiFiUdpSendReceiveString flash	%	examples/WiFiUdpSendReceiveString RAM for global variables	%	examples/WiFiWebClient flash	%	examples/WiFiWebClient RAM for global variables	%	examples/WiFiWebClientRepeating flash	%	examples/WiFiWebClientRepeating RAM for global variables	%	examples/WiFiWebServer flash	%	examples/WiFiWebServer RAM for global variables	%	examples/FirmwareUpdater flash	%	examples/FirmwareUpdater RAM for global variables	%
Intel:arc32:arduino_101	0	0.0	N/A	N/A	0	0.0	N/A	N/A	0	0.0	N/A	N/A	0	0.0	N/A	N/A	0	0.0	N/A	N/A	100	0.06	N/A	N/A	100	0.06	N/A	N/A	0	0.0	N/A	N/A	0	0.0	N/A	N/A	0	0.0	N/A	N/A	0	0.0	N/A	N/A	0	0.0	N/A	N/A	0	0.0	N/A	N/A	100	0.06	N/A	N/A	100	0.06	N/A	N/A	0	0.0	N/A	N/A	0	0.0	N/A	N/A	0	0.0	N/A	N/A	0	0.0	N/A	N/A
arduino:avr:mega	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	274	0.11	4	0.05	274	0.11	4	0.05	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	170	0.07	4	0.05	170	0.07	4	0.05	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0
arduino:avr:uno	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	272	0.84	4	0.2	272	0.84	4	0.2	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	164	0.51	4	0.2	164	0.51	4	0.2	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0
arduino:sam:arduino_due_x_dbg	0	0.0	N/A	N/A	0	0.0	N/A	N/A	0	0.0	N/A	N/A	0	0.0	N/A	N/A	0	0.0	N/A	N/A	88	0.02	N/A	N/A	80	0.02	N/A	N/A	0	0.0	N/A	N/A	0	0.0	N/A	N/A	0	0.0	N/A	N/A	0	0.0	N/A	N/A	0	0.0	N/A	N/A	0	0.0	N/A	N/A	80	0.02	N/A	N/A	88	0.02	N/A	N/A	0	0.0	N/A	N/A	0	0.0	N/A	N/A	0	0.0	N/A	N/A	0	0.0	N/A	N/A
arduino:samd:arduino_zero_edbg	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	96	0.04	0	0.0	96	0.04	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	96	0.04	0	0.0	96	0.04	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0
arduino:samd:mkr1000	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	96	0.04	0	0.0	96	0.04	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	96	0.04	0	0.0	96	0.04	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0

Click for full report CSV

Board,examples/AP_SimpleWebServer<br>flash,%,examples/AP_SimpleWebServer<br>RAM for global variables,%,examples/CheckWifi101FirmwareVersion<br>flash,%,examples/CheckWifi101FirmwareVersion<br>RAM for global variables,%,examples/ConnectNoEncryption<br>flash,%,examples/ConnectNoEncryption<br>RAM for global variables,%,examples/ConnectWithWEP<br>flash,%,examples/ConnectWithWEP<br>RAM for global variables,%,examples/ConnectWithWPA<br>flash,%,examples/ConnectWithWPA<br>RAM for global variables,%,examples/MDNS_WiFiWebServer<br>flash,%,examples/MDNS_WiFiWebServer<br>RAM for global variables,%,examples/Provisioning_WiFiWebServer<br>flash,%,examples/Provisioning_WiFiWebServer<br>RAM for global variables,%,examples/ScanNetworks<br>flash,%,examples/ScanNetworks<br>RAM for global variables,%,examples/ScanNetworksAdvanced<br>flash,%,examples/ScanNetworksAdvanced<br>RAM for global variables,%,examples/SimpleWebServerWiFi<br>flash,%,examples/SimpleWebServerWiFi<br>RAM for global variables,%,examples/WiFiChatServer<br>flash,%,examples/WiFiChatServer<br>RAM for global variables,%,examples/WiFiPing<br>flash,%,examples/WiFiPing<br>RAM for global variables,%,examples/WiFiSSLClient<br>flash,%,examples/WiFiSSLClient<br>RAM for global variables,%,examples/WiFiUdpNtpClient<br>flash,%,examples/WiFiUdpNtpClient<br>RAM for global variables,%,examples/WiFiUdpSendReceiveString<br>flash,%,examples/WiFiUdpSendReceiveString<br>RAM for global variables,%,examples/WiFiWebClient<br>flash,%,examples/WiFiWebClient<br>RAM for global variables,%,examples/WiFiWebClientRepeating<br>flash,%,examples/WiFiWebClientRepeating<br>RAM for global variables,%,examples/WiFiWebServer<br>flash,%,examples/WiFiWebServer<br>RAM for global variables,%,examples/FirmwareUpdater<br>flash,%,examples/FirmwareUpdater<br>RAM for global variables,%
Intel:arc32:arduino_101,0,0.0,N/A,N/A,0,0.0,N/A,N/A,0,0.0,N/A,N/A,0,0.0,N/A,N/A,0,0.0,N/A,N/A,100,0.06,N/A,N/A,100,0.06,N/A,N/A,0,0.0,N/A,N/A,0,0.0,N/A,N/A,0,0.0,N/A,N/A,0,0.0,N/A,N/A,0,0.0,N/A,N/A,0,0.0,N/A,N/A,100,0.06,N/A,N/A,100,0.06,N/A,N/A,0,0.0,N/A,N/A,0,0.0,N/A,N/A,0,0.0,N/A,N/A,0,0.0,N/A,N/A
arduino:avr:mega,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,274,0.11,4,0.05,274,0.11,4,0.05,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,170,0.07,4,0.05,170,0.07,4,0.05,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,,,,
arduino:avr:uno,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,272,0.84,4,0.2,272,0.84,4,0.2,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,164,0.51,4,0.2,164,0.51,4,0.2,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,,,,
arduino:sam:arduino_due_x_dbg,0,0.0,N/A,N/A,0,0.0,N/A,N/A,0,0.0,N/A,N/A,0,0.0,N/A,N/A,0,0.0,N/A,N/A,88,0.02,N/A,N/A,80,0.02,N/A,N/A,0,0.0,N/A,N/A,0,0.0,N/A,N/A,0,0.0,N/A,N/A,0,0.0,N/A,N/A,0,0.0,N/A,N/A,0,0.0,N/A,N/A,80,0.02,N/A,N/A,88,0.02,N/A,N/A,0,0.0,N/A,N/A,0,0.0,N/A,N/A,0,0.0,N/A,N/A,0,0.0,N/A,N/A
arduino:samd:arduino_zero_edbg,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,96,0.04,0,0.0,96,0.04,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,96,0.04,0,0.0,96,0.04,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0
arduino:samd:mkr1000,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,96,0.04,0,0.0,96,0.04,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,96,0.04,0,0.0,96,0.04,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0