mDNSResponder.h

00001 /*
00002     Made by JB RYU, KOR - 2015
00003     
00004     class mDNSResponder
00005 */
00006 
00007 #ifndef MDNS_RESPONDER_H
00008 #define MDNS_RESPONDER_H
00009 
00010 #include "lwip/opt.h"
00011 #include "mbed.h"
00012 #include "EthernetInterface.h"
00013 #include "dns-sd.h"
00014 
00015 #if LWIP_DNS 
00016 
00017 #include "mbed.h"
00018 #include "mem.h"
00019 #include "memp.h"
00020 #include "dns.h"
00021 
00022 #define MDNS_PORT (5353)
00023 #define MCAST "224.0.0.251"
00024 
00025 class mDNSResponder
00026 {
00027 public:
00028     mDNSResponder(EthernetInterface);
00029     virtual ~mDNSResponder();
00030     void close();
00031     void announce(const char* ip);
00032     void MDNS_process();
00033   
00034 private:
00035   void IPstringToByte(char* IPstr);
00036     char* skip_name(char* query);
00037     void query_domain(void);
00038     void register_service(char* number);
00039     char* decode_name(char* query, char* packet);
00040     void send_dns_ans(struct dns_hdr* hdr);
00041 
00042     /*static objs */
00043     static MY_SD_DOMAINS SD_domains;
00044     static struct dns_hdr SD_res_hdr;
00045 
00046     static char query_buf[1500];
00047     static QR_MAP g_queries;
00048     
00049   char* IP_str;
00050   uint8_t IP_byte[4];
00051     
00052   UDPSocket mdns_sock;
00053     SocketAddress rcv_endpt; //initial value := ip addr any
00054     SocketAddress send_endpt;
00055 };
00056 
00057 #endif
00058 
00059 #ifndef htons
00060 #define htons( x ) ( (( x << 8 ) & 0xFF00) | (( x >> 8 ) & 0x00FF) )
00061 #define ntohs( x ) (htons(x))
00062 #endif
00063 
00064 #ifndef htonl
00065 #define htonl( x ) ( (( x << 24 ) & 0xff000000)  \
00066                    | (( x <<  8 ) & 0x00ff0000)  \
00067                    | (( x >>  8 ) & 0x0000ff00)  \
00068                    | (( x >> 24 ) & 0x000000ff)  )
00069 #define ntohl( x ) (htonl(x))
00070 #endif
00071 
00072 #endif