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Add initial IPv6 Support
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‎cores/esp32/IPv6Address.cpp‎

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/*
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IPv6Address.cpp - Base class that provides IPv6Address
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Copyright (c) 2011 Adrian McEwen. All right reserved.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include<Arduino.h>
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#include<IPv6Address.h>
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#include<Print.h>
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IPv6Address::IPv6Address()
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{
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memset(_address.bytes, 0, sizeof(_address.bytes));
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}
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IPv6Address::IPv6Address(constuint8_t *address)
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{
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memcpy(_address.bytes, address, sizeof(_address.bytes));
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}
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IPv6Address::IPv6Address(constuint32_t *address)
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{
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memcpy(_address.bytes, (constuint8_t *)address, sizeof(_address.bytes));
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}
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IPv6Address& IPv6Address::operator=(constuint8_t *address)
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{
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memcpy(_address.bytes, address, sizeof(_address.bytes));
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return *this;
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}
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bool IPv6Address::operator==(constuint8_t* addr) const
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{
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returnmemcmp(addr, _address.bytes, sizeof(_address.bytes)) == 0;
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}
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size_tIPv6Address::printTo(Print& p) const
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{
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size_t n = 0;
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for(int i = 0; i < 16; i+=2){
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if(i){
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n += p.print(':');
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}
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n += p.printf("%02x", _address.bytes[i]);
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n += p.printf("%02x", _address.bytes[i+1]);
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}
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return n;
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}
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String IPv6Address::toString() const
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{
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char szRet[40];
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sprintf(szRet,"%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x",
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_address.bytes[0], _address.bytes[1], _address.bytes[2], _address.bytes[3],
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_address.bytes[4], _address.bytes[5], _address.bytes[6], _address.bytes[7],
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_address.bytes[8], _address.bytes[9], _address.bytes[10], _address.bytes[11],
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_address.bytes[12], _address.bytes[13], _address.bytes[14], _address.bytes[15]);
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returnString(szRet);
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}
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boolIPv6Address::fromString(constchar *address)
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{
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//format 0011:2233:4455:6677:8899:aabb:ccdd:eeff
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if(strlen(address) != 39){
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returnfalse;
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}
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char * pos = (char *)address;
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size_t i = 0;
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for(i = 0; i < 16; i+=2){
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if(!sscanf(pos, "%2hhx", &_address.bytes[i]) || !sscanf(pos+2, "%2hhx", &_address.bytes[i+1])){
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returnfalse;
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}
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pos += 5;
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}
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returntrue;
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}

‎cores/esp32/IPv6Address.h‎

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/*
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IPv6Address.h - Base class that provides IPv6Address
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Copyright (c) 2011 Adrian McEwen. All right reserved.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
9+
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This library is distributed in the hope that it will be useful,
11+
but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef IPv6Address_h
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#defineIPv6Address_h
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#include<stdint.h>
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#include<WString.h>
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#include<Printable.h>
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// A class to make it easier to handle and pass around IP addresses
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classIPv6Address: publicPrintable
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{
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private:
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union{
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uint8_t bytes[16]; // IPv4 address
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uint32_t dword[4];
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} _address;
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// Access the raw byte array containing the address. Because this returns a pointer
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// to the internal structure rather than a copy of the address this function should only
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// be used when you know that the usage of the returned uint8_t* will be transient and not
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// stored.
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uint8_t* raw_address()
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{
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return _address.bytes;
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}
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public:
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// Constructors
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IPv6Address();
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IPv6Address(constuint8_t *address);
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IPv6Address(constuint32_t *address);
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virtual~IPv6Address(){}
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boolfromString(constchar *address);
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boolfromString(const String &address){returnfromString(address.c_str())}
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operatorconstuint8_t*() const
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{
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return _address.bytes;
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}
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operatorconstuint32_t*() const
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{
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return _address.dword;
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}
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booloperator==(const IPv6Address& addr) const
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{
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return (_address.dword[0] == addr._address.dword[0])
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&& (_address.dword[1] == addr._address.dword[1])
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&& (_address.dword[2] == addr._address.dword[2])
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&& (_address.dword[3] == addr._address.dword[3]);
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}
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booloperator==(constuint8_t* addr) const;
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// Overloaded index operator to allow getting and setting individual octets of the address
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uint8_toperator[](int index) const
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{
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return _address.bytes[index];
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}
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uint8_t& operator[](int index)
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{
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return _address.bytes[index];
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}
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// Overloaded copy operators to allow initialisation of IPv6Address objects from other types
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IPv6Address& operator=(constuint8_t *address);
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virtualsize_tprintTo(Print& p) const;
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String toString() const;
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friendclassUDP;
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friendclassClient;
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friendclassServer;
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};
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#endif

‎libraries/WiFi/examples/WiFiIPv6/WiFiIPv6.ino‎

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#include"WiFi.h"
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#defineSTA_SSID"nbis-test"
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#defineSTA_PASS"1234567890"
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#defineAP_SSID"esp32"
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staticvolatilebool wifi_connected = false;
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WiFiUDP ntpClient;
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voidwifiOnConnect(){
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Serial.println("STA Connected");
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Serial.print("STA IPv4: ");
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Serial.println(WiFi.localIP());
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ntpClient.begin(2390);
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}
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voidwifiOnDisconnect(){
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Serial.println("STA Disconnected");
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delay(1000);
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WiFi.begin(STA_SSID, STA_PASS);
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}
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voidwifiConnectedLoop(){
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//lets check the time
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constint NTP_PACKET_SIZE = 48;
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byte ntpPacketBuffer[NTP_PACKET_SIZE];
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IPAddress address;
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WiFi.hostByName("time.nist.gov", address);
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memset(ntpPacketBuffer, 0, NTP_PACKET_SIZE);
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ntpPacketBuffer[0] = 0b11100011; // LI, Version, Mode
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ntpPacketBuffer[1] = 0; // Stratum, or type of clock
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ntpPacketBuffer[2] = 6; // Polling Interval
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ntpPacketBuffer[3] = 0xEC; // Peer Clock Precision
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// 8 bytes of zero for Root Delay & Root Dispersion
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ntpPacketBuffer[12] = 49;
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ntpPacketBuffer[13] = 0x4E;
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ntpPacketBuffer[14] = 49;
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ntpPacketBuffer[15] = 52;
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ntpClient.beginPacket(address, 123); //NTP requests are to port 123
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ntpClient.write(ntpPacketBuffer, NTP_PACKET_SIZE);
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ntpClient.endPacket();
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delay(1000);
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int packetLength = ntpClient.parsePacket();
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if (packetLength){
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if(packetLength >= NTP_PACKET_SIZE){
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ntpClient.read(ntpPacketBuffer, NTP_PACKET_SIZE);
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}
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ntpClient.flush();
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uint32_t secsSince1900 = (uint32_t)ntpPacketBuffer[40] << 24 | (uint32_t)ntpPacketBuffer[41] << 16 | (uint32_t)ntpPacketBuffer[42] << 8 | ntpPacketBuffer[43];
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//Serial.printf("Seconds since Jan 1 1900: %u\n", secsSince1900);
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uint32_t epoch = secsSince1900 - 2208988800UL;
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//Serial.printf("EPOCH: %u\n", epoch);
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uint8_t h = (epoch % 86400L) / 3600;
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uint8_t m = (epoch % 3600) / 60;
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uint8_t s = (epoch % 60);
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Serial.printf("UTC: %02u:%02u:%02u (GMT)\n", h, m, s);
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}
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delay(9000);
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}
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voidWiFiEvent(WiFiEvent_t event){
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switch(event){
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case SYSTEM_EVENT_AP_START:
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//can set ap hostname here
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WiFi.softAPsetHostname(AP_SSID);
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//enable ap ipv6 here
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WiFi.softAPenableIpV6();
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break;
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case SYSTEM_EVENT_STA_START:
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//set sta hostname here
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WiFi.setHostname(AP_SSID);
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break;
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case SYSTEM_EVENT_STA_CONNECTED:
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//enable sta ipv6 here
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WiFi.enableIpV6();
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break;
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case SYSTEM_EVENT_AP_STA_GOT_IP6:
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//both interfaces get the same event
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Serial.print("STA IPv6: ");
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Serial.println(WiFi.localIPv6());
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Serial.print("AP IPv6: ");
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Serial.println(WiFi.softAPIPv6());
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break;
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case SYSTEM_EVENT_STA_GOT_IP:
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wifiOnConnect();
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wifi_connected = true;
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break;
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case SYSTEM_EVENT_STA_DISCONNECTED:
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wifi_connected = false;
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wifiOnDisconnect();
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break;
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default:
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break;
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}
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}
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voidsetup(){
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Serial.begin(115200);
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WiFi.disconnect(true);
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WiFi.onEvent(WiFiEvent);
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WiFi.mode(WIFI_MODE_APSTA);
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WiFi.softAP(AP_SSID);
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WiFi.begin(STA_SSID, STA_PASS);
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}
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voidloop(){
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if(wifi_connected){
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wifiConnectedLoop();
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}
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while(Serial.available()) Serial.write(Serial.read());
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}

‎libraries/WiFi/src/WiFi.h‎

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#include"Print.h"
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#include"IPAddress.h"
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#include"IPv6Address.h"
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#include"WiFiType.h"
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#include"WiFiSTA.h"

‎libraries/WiFi/src/WiFiAP.cpp‎

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@@ -232,3 +232,48 @@ String WiFiAPClass::softAPmacAddress(void)
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sprintf(macStr, "%02X:%02X:%02X:%02X:%02X:%02X", mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
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returnString(macStr);
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}
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/**
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* Get the softAP interface Host name.
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* @return char array hostname
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*/
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constchar * WiFiAPClass::softAPgetHostname()
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{
242+
constchar * hostname;
243+
if(tcpip_adapter_get_hostname(TCPIP_ADAPTER_IF_AP, &hostname)){
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returnNULL;
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}
246+
return hostname;
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}
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/**
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* Set the softAP interface Host name.
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* @param hostname pointer to const string
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* @return true on success
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*/
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boolWiFiAPClass::softAPsetHostname(constchar * hostname)
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{
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returntcpip_adapter_set_hostname(TCPIP_ADAPTER_IF_AP, hostname) == 0;
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}
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/**
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* Enable IPv6 on the softAP interface.
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* @return true on success
262+
*/
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boolWiFiAPClass::softAPenableIpV6()
264+
{
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returntcpip_adapter_create_ip6_linklocal(TCPIP_ADAPTER_IF_AP) == 0;
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}
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/**
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* Get the softAP interface IPv6 address.
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* @return IPv6Address softAP IPv6
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*/
272+
IPv6Address WiFiAPClass::softAPIPv6()
273+
{
274+
staticip6_addr_t addr;
275+
if(tcpip_adapter_get_ip6_linklocal(TCPIP_ADAPTER_IF_AP, &addr)){
276+
returnIPv6Address();
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}
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returnIPv6Address(addr.addr);
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}

‎libraries/WiFi/src/WiFiAP.h‎

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@@ -45,6 +45,12 @@ class WiFiAPClass
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IPAddress softAPIP();
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boolsoftAPenableIpV6();
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IPv6Address softAPIPv6();
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constchar * softAPgetHostname();
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boolsoftAPsetHostname(constchar * hostname);
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4854
uint8_t* softAPmacAddress(uint8_t* mac);
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String softAPmacAddress(void);
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