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mcproxy/mcproxy/include/utils/mc_socket.hpp

00001 /*
00002  * This file is part of mcproxy.
00003  *
00004  * mcproxy is free software; you can redistribute it and/or modify
00005  * it under the terms of the GNU Lesser General Public License as published by
00006  * the Free Software Foundation; either version 3 of the License, or (at your
00007  * option) any later version.
00008  *
00009  * mcproxy is distributed in the hope that it will be useful, but
00010  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
00011  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
00012  * License for more details.
00013  *
00014  * You should have received a copy of the GNU Lesser General Public License
00015  * along with mcproxy; see the file COPYING.LESSER.
00016  *
00017  * written by Sebastian Woelke, in cooperation with:
00018  * INET group, Hamburg University of Applied Sciences,
00019  * Website: http://mcproxy.realmv6.org/
00020  */
00021
00022
00023 #ifndef MCSOCKET_H_
00024 #define MCSOCKET_H_
00025 
00026 #include "include/utils/addr_storage.hpp"
00027 #include <time.h>
00028 #include <string>
00029 using namespace std;
00030
00033
00034 /*
00035  * ##--Multicast Addresses--##
00036  * 224.0.0.0 - 224.255.255.255 ==> für Routingprotokolle reserviert
00037  * 239.0.0.0 - 239.255.255.255 ==> für scoping reserviert
00038  * 225.x.x.x bis 238.x.x.x     ==> frei verfügbar
00039  */
00040
00041 //IPv4 addresses that are reserved for IP multicasting (http://en.wikipedia.org/wiki/Multicast_address)
00042 #define IPV4_ALL_HOST_ADDR                  "224.0.0.1"     //The All Hosts multicast group that contains all systems on the same network segment
00043 #define IPV4_ALL_IGMP_ROUTERS_ADDR                "224.0.0.2"   //The All Routers multicast group that contains all routers on the same network segment
00044 #define IPV4_ALL_SPF_ROUTER_ADDR                  "224.0.0.5"   //The Open Shortest Path First (OSPF) AllSPFRouters address. Used to send Hello packets to all OSPF routers on a network segment
00045 #define IPV4_ALL_D_Routers_ADDR                   "224.0.0.6"   //The OSPF AllDRouters address. Used to send OSPF routing information to OSPF designated routers on a network segment
00046 #define IPV4_RIPV2_ADDR                     "224.0.0.9" //The RIP version 2 group address. Used to send routing information using the RIP protocol to all RIP v2-aware routers on a network segment
00047 #define IPV4_EIGRP_ADDR                     "224.0.0.10"    //EIGRP group address. Used to send EIGRP routing information to all EIGRP routers on a network segment
00048 #define IPV4_PIMv2_ADDR                     "224.0.0.13"    //PIM Version 2 (Protocol Independent Multicast)
00049 #define IPV4_VRR_ADDR                       "224.0.0.18"    //Virtual Router Redundancy Protocol
00050 #define IPV4_IS_IS_OVER_IP_19_ADDR                "224.0.0.19"  //IS-IS over IP
00051 #define IPV4_IS_IS_OVER_IP_20_ADDR                "224.0.0.20"  //IS-IS over IP
00052 #define IPV4_IS_IS_OVER_IP_21_ADDR                "224.0.0.21"  //IS-IS over IP
00053 #define IPV4_IGMPV3_ADDR                          "224.0.0.22"  //IGMP Version 3 (Internet Group Management Protocol)
00054 #define IPV4_HOT_STANDBY_ROUTERV2_ADDR            "224.0.0.102" //Hot Standby Router Protocol Version 2
00055 #define IPV4_MCAST_DNS_ADDR                 "224.0.0.251"   //Multicast DNS address
00056 #define IPV4_LINK_LOCAL_MCAST_NAME_RES_ADDR       "224.0.0.252" //Link-local Multicast Name Resolution address
00057 #define IPV4_NTP_ADDR                       "224.0.1.1" //Network Time Protocol address
00058 #define IPV4_CISCO_AUTO_RP_ANNOUNCE_ADDR          "224.0.1.39"  //Cisco Auto-RP-Announce address
00059 #define IPV4_CISCO_AUTO_RP_DISCOVERY_ADDR         "224.0.1.40"  //Cisco Auto-RP-Discovery address
00060 #define IPV4_H_323_GETEKEEPER_DISC_ADDR           "224.0.1.41"  //H.323 Gatekeeper discovery address
00061 
00062 //IPv6 addresses that are reserved for IP multicasting (http://www.iana.org/assignments/ipv6-multicast-addresses/)
00063 #define IPV6_ALL_NODES_ADDR                       "ff02::1"       //All nodes on the local network segment (equivalent to the IPv4 link-local broadcast address, 169.254.255.255)
00064 #define IPV6_ALL_LINK_LOCAL_ROUTER                "ff02::2"       //All routers on the link local network segment
00065 #define IPV6_ALL_SITE_LOCAL_ROUTER                "ff05::2"       //All routers on the site local network segment [RFC4291]
00066 #define IPV6_ALL_MLDv2_CAPABLE_ROUTERS            "ff02::16"      //All MLDv2-capable routers [RFC3810]
00067 #define IPV6_ALL_PIM_ROUTERS                      "ff02::d"       //All PIM Routers
00068 
00069
00070 #define MC_SCOKET_IF_CHOOSE_INIT -1
00071 
00072 string ipAddrResolver(string ipAddr);
00073
00074
00075 //Multicast Socket
00079 class mc_socket {
00080 protected:
00084      int m_sock;
00085
00089      int m_addrFamily;
00090
00094      int m_ifIndex;
00095
00099      bool m_own_socket;
00100
00101      //contain important resource
00105      mc_socket(const mc_socket &copy);
00106 public:
00110      mc_socket();
00111
00115      virtual ~mc_socket();
00116
00120      virtual bool create_udp_ipv4_socket();
00121
00125      virtual bool create_udp_ipv6_socket();
00126
00133      bool set_own_socket(int socket, int addr_family);
00134
00138      int get_addr_family();
00139
00144      bool bind_udp_socket(int port);
00145
00150      bool set_loop_back(bool enable);
00151
00153      // * @brief set the socket option for receive all multicast packet only used for ipv4
00154      // */
00155      //bool set_recv_all_mc(const char* if_name);
00156
00164      bool send_packet(const char* addr, int port, string data);
00165
00174      bool send_packet(const char* addr, int port, const unsigned char* data, unsigned int data_size);
00175
00183      bool receive_packet(unsigned char* buf, int sizeOfBuf, int &sizeOfInfo);
00184
00191      bool receive_msg(struct msghdr* msg, int &sizeOfInfo);
00197      bool set_receive_timeout(long msec);
00198
00206      bool choose_if(const char* interface);
00207
00216      bool join_group(const char* addr, const char* interface);
00217
00226      bool leave_group(const char* addr, const char* interface);
00227
00231      bool is_udp_valid() {
00232           return m_sock > 0;
00233      }
00234
00238      static void test_join_leave_send();
00239
00240 };
00241
00242 #endif /* MCSOCKET_H_ */