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Add destinationIP method to WiFiUDP

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Might be useful to distinguish between normal and multicast packets arriving at the same port (#105)
This commit is contained in:
Ivan Grokhotkov 2015-04-28 00:03:29 +08:00
parent 727c61efe2
commit 5354464a01
4 changed files with 25 additions and 3 deletions
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1
libraries/ESP8266WiFi/keywords.txt
View File

@ -47,6 +47,7 @@ beginPacket KEYWORD2
beginPacketMulticast KEYWORD2
endPacket KEYWORD2
parsePacket KEYWORD2
destinationIP KEYWORD2
remoteIP KEYWORD2
remotePort KEYWORD2
softAP KEYWORD2

11
libraries/ESP8266WiFi/src/WiFiUdp.cpp
View File

@ -240,6 +240,17 @@ uint16_t WiFiUDP::remotePort()
return _ctx->getRemotePort();
}
IPAddress WiFiUDP::destinationIP()
{
IPAddress addr;
if (!_ctx)
return addr;
addr = _ctx->getDestAddress();
return addr;
}
uint16_t WiFiUDP::localPort()
{
if (!_ctx)

3
libraries/ESP8266WiFi/src/WiFiUdp.h
View File

@ -97,6 +97,9 @@ public:
virtual IPAddress remoteIP();
// Return the port of the host who sent the current incoming packet
virtual uint16_t remotePort();
// Return the destination address for incoming packets,
// useful to distinguish multicast and ordinary packets
IPAddress destinationIP();
// Return the local port for outgoing packets
uint16_t localPort();

13
libraries/ESP8266WiFi/src/include/UdpContext.h
View File

@ -26,7 +26,8 @@ class UdpContext;
extern "C" void esp_yield();
extern "C" void esp_schedule();
#define GET_IP_HDR(pb) reinterpret_cast<ip_hdr*>(((uint8_t*)((pb)->payload)) - UDP_HLEN - IP_HLEN);
#define GET_UDP_HDR(pb) reinterpret_cast<udp_hdr*>(((uint8_t*)((pb)->payload)) - UDP_HLEN);
class UdpContext
{
public:
@ -122,7 +123,7 @@ public:
if (!_rx_buf)
return 0;
struct ip_hdr* iphdr = (struct ip_hdr*) (((uint8_t*)_rx_buf->payload) - UDP_HLEN - IP_HLEN);
ip_hdr* iphdr = GET_IP_HDR(_rx_buf);
return iphdr->src.addr;
}
@ -131,10 +132,16 @@ public:
if (!_rx_buf)
return 0;
struct udp_hdr* udphdr = (struct udp_hdr*) (((uint8_t*)_rx_buf->payload) - UDP_HLEN);
udp_hdr* udphdr = GET_UDP_HDR(_rx_buf);
return ntohs(udphdr->src);
}
uint32_t getDestAddress()
{
ip_hdr* iphdr = GET_IP_HDR(_rx_buf);
return iphdr->dest.addr;
}
uint16_t getLocalPort()
{
if (!_pcb)