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Add support for multicast UDP
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@ -35,6 +35,7 @@ extern "C"
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#include "lwip/opt.h"
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#include "lwip/udp.h"
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#include "lwip/inet.h"
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#include "lwip/igmp.h"
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#include "include/UdpContext.h"
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/* Constructor */
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@ -73,6 +74,32 @@ uint8_t WiFiUDP::begin(uint16_t port)
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return (_ctx->listen(addr, port)) ? 1 : 0;
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}
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uint8_t WiFiUDP::beginMulticast(IPAddress multicast, uint16_t port)
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{
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if (_ctx)
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{
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_ctx->unref();
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_ctx = 0;
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}
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ip_addr_t ifaddr;
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ifaddr.addr = (uint32_t) WiFi.localIP();
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ip_addr_t multicast_addr;
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multicast_addr.addr = (uint32_t) multicast;
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if (igmp_joingroup(&ifaddr, &multicast_addr)!= ERR_OK) {
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return 0;
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}
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_ctx = new UdpContext;
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if (!_ctx->listen(*IP_ADDR_ANY, port)) {
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return 0;
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}
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return 1;
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}
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/* return number of bytes available in the current packet,
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will return zero if parsePacket hasn't been called yet */
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int WiFiUDP::available() {
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@ -117,6 +144,17 @@ int WiFiUDP::endPacket()
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return 0;
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_ctx->send();
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return 1;
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}
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int WiFiUDP::endPacketMulticast(IPAddress ip, uint16_t port)
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{
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if (!_ctx)
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return 0;
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ip_addr_t addr;
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addr.addr = (uint32_t) ip;
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_ctx->send(&addr, port);
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return 1;
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}
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size_t WiFiUDP::write(uint8_t byte)
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