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Fix AsyncUDP reporting bad address and port

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Fixes: https://github.com/espressif/arduino-esp32/issues/4923
This commit is contained in:
me-no-dev 2021-03-10 16:20:18 +02:00
parent e8311b00ae
commit 23f6e81d52
1 changed files with 11 additions and 5 deletions
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16
libraries/AsyncUDP/src/AsyncUDP.cpp
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@ -285,6 +285,12 @@ AsyncUDPPacket::AsyncUDPPacket(AsyncUDPPacket &packet){
_len = packet._len;
_index = 0;
memcpy(&_remoteIp, &packet._remoteIp, sizeof(ip_addr_t));
memcpy(&_localIp, &packet._localIp, sizeof(ip_addr_t));
_localPort = packet._localPort;
_remotePort = packet._remotePort;
memcpy(_remoteMac, packet._remoteMac, 6);
pbuf_ref(_pb);
}
@ -304,18 +310,18 @@ AsyncUDPPacket::AsyncUDPPacket(AsyncUDP *udp, pbuf *pb, const ip_addr_t *raddr,
_localIp.type = _remoteIp.type;
eth_hdr* eth = NULL;
udp_hdr* udphdr = reinterpret_cast<udp_hdr*>(_data - UDP_HLEN);
udp_hdr* udphdr = (udp_hdr *)(_data - UDP_HLEN);
_localPort = ntohs(udphdr->dest);
_remotePort = ntohs(udphdr->src);
if (_remoteIp.type == IPADDR_TYPE_V4) {
eth = (eth_hdr *)(((uint8_t *)(pb->payload)) - UDP_HLEN - IP_HLEN - SIZEOF_ETH_HDR);
struct ip_hdr * iphdr = (struct ip_hdr *)(((uint8_t *)(pb->payload)) - UDP_HLEN - IP_HLEN);
eth = (eth_hdr *)(_data - UDP_HLEN - IP_HLEN - SIZEOF_ETH_HDR);
struct ip_hdr * iphdr = (struct ip_hdr *)(_data - UDP_HLEN - IP_HLEN);
_localIp.u_addr.ip4.addr = iphdr->dest.addr;
_remoteIp.u_addr.ip4.addr = iphdr->src.addr;
} else {
eth = (eth_hdr *)(((uint8_t *)(pb->payload)) - UDP_HLEN - IP6_HLEN - SIZEOF_ETH_HDR);
struct ip6_hdr * ip6hdr = (struct ip6_hdr *)(((uint8_t *)(pb->payload)) - UDP_HLEN - IP6_HLEN);
eth = (eth_hdr *)(_data - UDP_HLEN - IP6_HLEN - SIZEOF_ETH_HDR);
struct ip6_hdr * ip6hdr = (struct ip6_hdr *)(_data - UDP_HLEN - IP6_HLEN);
memcpy(&_localIp.u_addr.ip6.addr, (uint8_t *)ip6hdr->dest.addr, 16);
memcpy(&_remoteIp.u_addr.ip6.addr, (uint8_t *)ip6hdr->src.addr, 16);
}