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-rw-r--r--src/Sockets/UdpSocket.cpp843
1 files changed, 843 insertions, 0 deletions
diff --git a/src/Sockets/UdpSocket.cpp b/src/Sockets/UdpSocket.cpp
new file mode 100644
index 0000000..75bebf2
--- /dev/null
+++ b/src/Sockets/UdpSocket.cpp
@@ -0,0 +1,843 @@
+/** \file UdpSocket.cpp
+ ** \date 2004-02-13
+ ** \author grymse@alhem.net
+**/
+/*
+Copyright (C) 2004-2007 Anders Hedstrom
+
+This library is made available under the terms of the GNU GPL.
+
+If you would like to use this library in a closed-source application,
+a separate license agreement is available. For information about
+the closed-source license agreement for the C++ sockets library,
+please visit http://www.alhem.net/Sockets/license.html and/or
+email license@alhem.net.
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+as published by the Free Software Foundation; either version 2
+of the License, or (at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+*/
+#ifdef _WIN32
+#ifdef _MSC_VER
+#pragma warning(disable:4786)
+#endif
+#include <stdlib.h>
+#else
+#include <errno.h>
+#endif
+
+#include "ISocketHandler.h"
+#include "UdpSocket.h"
+#include "Utility.h"
+#include "Ipv4Address.h"
+#include "Ipv6Address.h"
+#ifdef ENABLE_EXCEPTIONS
+#include "Exception.h"
+#endif
+// include this to see strange sights
+//#include <linux/in6.h>
+
+
+#ifdef SOCKETS_NAMESPACE
+namespace SOCKETS_NAMESPACE {
+#endif
+
+
+UdpSocket::UdpSocket(ISocketHandler& h, int ibufsz, bool ipv6, int retries) : Socket(h)
+, m_ibuf(new char[ibufsz])
+, m_ibufsz(ibufsz)
+, m_bind_ok(false)
+, m_port(0)
+, m_last_size_written(-1)
+, m_retries(retries)
+, m_b_read_ts(false)
+{
+#ifdef ENABLE_IPV6
+#ifdef IPPROTO_IPV6
+ SetIpv6(ipv6);
+#endif
+#endif
+}
+
+
+UdpSocket::~UdpSocket()
+{
+ Close();
+ delete[] m_ibuf;
+}
+
+
+int UdpSocket::Bind(port_t &port, int range)
+{
+#ifdef ENABLE_IPV6
+#ifdef IPPROTO_IPV6
+ if (IsIpv6())
+ {
+ Ipv6Address ad(port);
+ return Bind(ad, range);
+ }
+#endif
+#endif
+ Ipv4Address ad(port);
+ return Bind(ad, range);
+}
+
+
+int UdpSocket::Bind(const std::string& intf, port_t &port, int range)
+{
+#ifdef ENABLE_IPV6
+#ifdef IPPROTO_IPV6
+ if (IsIpv6())
+ {
+ Ipv6Address ad(intf, port);
+ if (ad.IsValid())
+ {
+ return Bind(ad, range);
+ }
+ SetCloseAndDelete();
+ return -1;
+ }
+#endif
+#endif
+ Ipv4Address ad(intf, port);
+ if (ad.IsValid())
+ {
+ return Bind(ad, range);
+ }
+ SetCloseAndDelete();
+ return -1;
+}
+
+
+int UdpSocket::Bind(ipaddr_t a, port_t &port, int range)
+{
+ Ipv4Address ad(a, port);
+ return Bind(ad, range);
+}
+
+
+#ifdef ENABLE_IPV6
+#ifdef IPPROTO_IPV6
+int UdpSocket::Bind(in6_addr a, port_t &port, int range)
+{
+ Ipv6Address ad(a, port);
+ return Bind(ad, range);
+}
+#endif
+#endif
+
+
+int UdpSocket::Bind(SocketAddress& ad, int range)
+{
+ if (GetSocket() == INVALID_SOCKET)
+ {
+ Attach(CreateSocket(ad.GetFamily(), SOCK_DGRAM, "udp"));
+ }
+ if (GetSocket() != INVALID_SOCKET)
+ {
+ SetNonblocking(true);
+ int n = bind(GetSocket(), ad, ad);
+ int tries = range;
+ while (n == -1 && tries--)
+ {
+ ad.SetPort(ad.GetPort() + 1);
+ n = bind(GetSocket(), ad, ad);
+ }
+ if (n == -1)
+ {
+ Handler().LogError(this, "bind", Errno, StrError(Errno), LOG_LEVEL_FATAL);
+ SetCloseAndDelete();
+#ifdef ENABLE_EXCEPTIONS
+ throw Exception("bind() failed for UdpSocket, port:range: " + Utility::l2string(ad.GetPort()) + ":" + Utility::l2string(range));
+#endif
+ return -1;
+ }
+ m_bind_ok = true;
+ m_port = ad.GetPort();
+ return 0;
+ }
+ return -1;
+}
+
+
+/** if you wish to use Send, first Open a connection */
+bool UdpSocket::Open(ipaddr_t l, port_t port)
+{
+ Ipv4Address ad(l, port);
+ return Open(ad);
+}
+
+
+bool UdpSocket::Open(const std::string& host, port_t port)
+{
+#ifdef ENABLE_IPV6
+#ifdef IPPROTO_IPV6
+ if (IsIpv6())
+ {
+ Ipv6Address ad(host, port);
+ if (ad.IsValid())
+ {
+ return Open(ad);
+ }
+ return false;
+ }
+#endif
+#endif
+ Ipv4Address ad(host, port);
+ if (ad.IsValid())
+ {
+ return Open(ad);
+ }
+ return false;
+}
+
+
+#ifdef ENABLE_IPV6
+#ifdef IPPROTO_IPV6
+bool UdpSocket::Open(struct in6_addr& a, port_t port)
+{
+ Ipv6Address ad(a, port);
+ return Open(ad);
+}
+#endif
+#endif
+
+
+bool UdpSocket::Open(SocketAddress& ad)
+{
+ if (GetSocket() == INVALID_SOCKET)
+ {
+ Attach(CreateSocket(ad.GetFamily(), SOCK_DGRAM, "udp"));
+ }
+ if (GetSocket() != INVALID_SOCKET)
+ {
+ SetNonblocking(true);
+ if (connect(GetSocket(), ad, ad) == -1)
+ {
+ Handler().LogError(this, "connect", Errno, StrError(Errno), LOG_LEVEL_FATAL);
+ SetCloseAndDelete();
+ return false;
+ }
+ SetConnected();
+ return true;
+ }
+ return false;
+}
+
+
+void UdpSocket::CreateConnection()
+{
+#ifdef ENABLE_IPV6
+#ifdef IPPROTO_IPV6
+ if (IsIpv6())
+ {
+ if (GetSocket() == INVALID_SOCKET)
+ {
+ SOCKET s = CreateSocket(AF_INET6, SOCK_DGRAM, "udp");
+ if (s == INVALID_SOCKET)
+ {
+ return;
+ }
+ SetNonblocking(true, s);
+ Attach(s);
+ }
+ return;
+ }
+#endif
+#endif
+ if (GetSocket() == INVALID_SOCKET)
+ {
+ SOCKET s = CreateSocket(AF_INET, SOCK_DGRAM, "udp");
+ if (s == INVALID_SOCKET)
+ {
+ return;
+ }
+ SetNonblocking(true, s);
+ Attach(s);
+ }
+}
+
+
+/** send to specified address */
+void UdpSocket::SendToBuf(const std::string& h, port_t p, const char *data, int len, int flags)
+{
+#ifdef ENABLE_IPV6
+#ifdef IPPROTO_IPV6
+ if (IsIpv6())
+ {
+ Ipv6Address ad(h, p);
+ if (ad.IsValid())
+ {
+ SendToBuf(ad, data, len, flags);
+ }
+ return;
+ }
+#endif
+#endif
+ Ipv4Address ad(h, p);
+ if (ad.IsValid())
+ {
+ SendToBuf(ad, data, len, flags);
+ }
+}
+
+
+/** send to specified address */
+void UdpSocket::SendToBuf(ipaddr_t a, port_t p, const char *data, int len, int flags)
+{
+ Ipv4Address ad(a, p);
+ SendToBuf(ad, data, len, flags);
+}
+
+
+#ifdef ENABLE_IPV6
+#ifdef IPPROTO_IPV6
+void UdpSocket::SendToBuf(in6_addr a, port_t p, const char *data, int len, int flags)
+{
+ Ipv6Address ad(a, p);
+ SendToBuf(ad, data, len, flags);
+}
+#endif
+#endif
+
+
+void UdpSocket::SendToBuf(SocketAddress& ad, const char *data, int len, int flags)
+{
+ if (GetSocket() == INVALID_SOCKET)
+ {
+ Attach(CreateSocket(ad.GetFamily(), SOCK_DGRAM, "udp"));
+ }
+ if (GetSocket() != INVALID_SOCKET)
+ {
+ SetNonblocking(true);
+ if ((m_last_size_written = sendto(GetSocket(), data, len, flags, ad, ad)) == -1)
+ {
+ Handler().LogError(this, "sendto", Errno, StrError(Errno), LOG_LEVEL_ERROR);
+ }
+ }
+}
+
+
+void UdpSocket::SendTo(const std::string& a, port_t p, const std::string& str, int flags)
+{
+ SendToBuf(a, p, str.c_str(), (int)str.size(), flags);
+}
+
+
+void UdpSocket::SendTo(ipaddr_t a, port_t p, const std::string& str, int flags)
+{
+ SendToBuf(a, p, str.c_str(), (int)str.size(), flags);
+}
+
+
+#ifdef ENABLE_IPV6
+#ifdef IPPROTO_IPV6
+void UdpSocket::SendTo(in6_addr a, port_t p, const std::string& str, int flags)
+{
+ SendToBuf(a, p, str.c_str(), (int)str.size(), flags);
+}
+#endif
+#endif
+
+
+void UdpSocket::SendTo(SocketAddress& ad, const std::string& str, int flags)
+{
+ SendToBuf(ad, str.c_str(), (int)str.size(), flags);
+}
+
+
+/** send to connected address */
+void UdpSocket::SendBuf(const char *data, size_t len, int flags)
+{
+ if (!IsConnected())
+ {
+ Handler().LogError(this, "SendBuf", 0, "not connected", LOG_LEVEL_ERROR);
+ return;
+ }
+ if ((m_last_size_written = send(GetSocket(), data, (int)len, flags)) == -1)
+ {
+ Handler().LogError(this, "send", Errno, StrError(Errno), LOG_LEVEL_ERROR);
+ }
+}
+
+
+void UdpSocket::Send(const std::string& str, int flags)
+{
+ SendBuf(str.c_str(), (int)str.size(), flags);
+}
+
+
+#ifndef _WIN32
+int UdpSocket::ReadTS(char *ioBuf, int inBufSize, struct sockaddr *from, socklen_t fromlen, struct timeval *ts)
+{
+ struct msghdr msg;
+ struct iovec vec[1];
+ union {
+ struct cmsghdr cm;
+ char data[CMSG_SPACE(sizeof(struct timeval))];
+ } cmsg_un;
+ struct cmsghdr *cmsg;
+ struct timeval *tv;
+
+ vec[0].iov_base = ioBuf;
+ vec[0].iov_len = inBufSize;
+
+ memset(&msg, 0, sizeof(msg));
+ memset(from, 0, fromlen);
+ memset(ioBuf, 0, inBufSize);
+ memset(&cmsg_un, 0, sizeof(cmsg_un));
+
+ msg.msg_name = (caddr_t)from;
+ msg.msg_namelen = fromlen;
+ msg.msg_iov = vec;
+ msg.msg_iovlen = 1;
+ msg.msg_control = cmsg_un.data;
+ msg.msg_controllen = sizeof(cmsg_un.data);
+ msg.msg_flags = 0;
+
+ // Original version - for reference only
+ //int n = recvfrom(GetSocket(), m_ibuf, m_ibufsz, 0, (struct sockaddr *)&sa, &sa_len);
+
+ int n = recvmsg(GetSocket(), &msg, MSG_DONTWAIT);
+
+ // now ioBuf will contain the data, as if we used recvfrom
+
+ // Now get the time
+ if(n != -1 && msg.msg_controllen >= sizeof(struct cmsghdr) && !(msg.msg_flags & MSG_CTRUNC))
+ {
+ tv = 0;
+ for (cmsg = CMSG_FIRSTHDR(&msg); cmsg != NULL; cmsg = CMSG_NXTHDR(&msg, cmsg))
+ {
+ if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_TIMESTAMP)
+ {
+ tv = (struct timeval *)CMSG_DATA(cmsg);
+ }
+ }
+ if (tv)
+ {
+ memcpy(ts, tv, sizeof(struct timeval));
+ }
+ }
+ // The address is in network order, but that's OK right now
+ return n;
+}
+#endif
+
+
+void UdpSocket::OnRead()
+{
+#ifdef ENABLE_IPV6
+#ifdef IPPROTO_IPV6
+ if (IsIpv6())
+ {
+ struct sockaddr_in6 sa;
+ socklen_t sa_len = sizeof(sa);
+ if (m_b_read_ts)
+ {
+ struct timeval ts;
+ Utility::GetTime(&ts);
+#ifdef _WIN32
+ int n = recvfrom(GetSocket(), m_ibuf, m_ibufsz, 0, (struct sockaddr *)&sa, &sa_len);
+#else
+ int n = ReadTS(m_ibuf, m_ibufsz, (struct sockaddr *)&sa, sa_len, &ts);
+#endif
+ if (n > 0)
+ {
+ this -> OnRawData(m_ibuf, n, (struct sockaddr *)&sa, sa_len, &ts);
+ }
+ else
+ if (n == -1)
+ {
+#ifdef _WIN32
+ if (Errno != WSAEWOULDBLOCK)
+#else
+ if (Errno != EWOULDBLOCK)
+#endif
+ Handler().LogError(this, "recvfrom", Errno, StrError(Errno), LOG_LEVEL_ERROR);
+ }
+ return;
+ }
+ int n = recvfrom(GetSocket(), m_ibuf, m_ibufsz, 0, (struct sockaddr *)&sa, &sa_len);
+ int q = m_retries; // receive max 10 at one cycle
+ while (n > 0)
+ {
+ if (sa_len != sizeof(sa))
+ {
+ Handler().LogError(this, "recvfrom", 0, "unexpected address struct size", LOG_LEVEL_WARNING);
+ }
+ this -> OnRawData(m_ibuf, n, (struct sockaddr *)&sa, sa_len);
+ if (!q--)
+ break;
+ //
+ n = recvfrom(GetSocket(), m_ibuf, m_ibufsz, 0, (struct sockaddr *)&sa, &sa_len);
+ }
+ if (n == -1)
+ {
+#ifdef _WIN32
+ if (Errno != WSAEWOULDBLOCK)
+#else
+ if (Errno != EWOULDBLOCK)
+#endif
+ Handler().LogError(this, "recvfrom", Errno, StrError(Errno), LOG_LEVEL_ERROR);
+ }
+ return;
+ }
+#endif
+#endif
+ struct sockaddr_in sa;
+ socklen_t sa_len = sizeof(sa);
+ if (m_b_read_ts)
+ {
+ struct timeval ts;
+ Utility::GetTime(&ts);
+#ifdef _WIN32
+ int n = recvfrom(GetSocket(), m_ibuf, m_ibufsz, 0, (struct sockaddr *)&sa, &sa_len);
+#else
+ int n = ReadTS(m_ibuf, m_ibufsz, (struct sockaddr *)&sa, sa_len, &ts);
+#endif
+ if (n > 0)
+ {
+ this -> OnRawData(m_ibuf, n, (struct sockaddr *)&sa, sa_len, &ts);
+ }
+ else
+ if (n == -1)
+ {
+#ifdef _WIN32
+ if (Errno != WSAEWOULDBLOCK)
+#else
+ if (Errno != EWOULDBLOCK)
+#endif
+ Handler().LogError(this, "recvfrom", Errno, StrError(Errno), LOG_LEVEL_ERROR);
+ }
+ return;
+ }
+ int n = recvfrom(GetSocket(), m_ibuf, m_ibufsz, 0, (struct sockaddr *)&sa, &sa_len);
+ int q = m_retries;
+ while (n > 0)
+ {
+ if (sa_len != sizeof(sa))
+ {
+ Handler().LogError(this, "recvfrom", 0, "unexpected address struct size", LOG_LEVEL_WARNING);
+ }
+ this -> OnRawData(m_ibuf, n, (struct sockaddr *)&sa, sa_len);
+ if (!q--)
+ break;
+ //
+ n = recvfrom(GetSocket(), m_ibuf, m_ibufsz, 0, (struct sockaddr *)&sa, &sa_len);
+ }
+ if (n == -1)
+ {
+#ifdef _WIN32
+ if (Errno != WSAEWOULDBLOCK)
+#else
+ if (Errno != EWOULDBLOCK)
+#endif
+ Handler().LogError(this, "recvfrom", Errno, StrError(Errno), LOG_LEVEL_ERROR);
+ }
+}
+
+
+void UdpSocket::SetBroadcast(bool b)
+{
+ int one = 1;
+ int zero = 0;
+
+ if (GetSocket() == INVALID_SOCKET)
+ {
+ CreateConnection();
+ }
+ if (b)
+ {
+ if (setsockopt(GetSocket(), SOL_SOCKET, SO_BROADCAST, (char *) &one, sizeof(one)) == -1)
+ {
+ Handler().LogError(this, "SetBroadcast", Errno, StrError(Errno), LOG_LEVEL_WARNING);
+ }
+ }
+ else
+ {
+ if (setsockopt(GetSocket(), SOL_SOCKET, SO_BROADCAST, (char *) &zero, sizeof(zero)) == -1)
+ {
+ Handler().LogError(this, "SetBroadcast", Errno, StrError(Errno), LOG_LEVEL_WARNING);
+ }
+ }
+}
+
+
+bool UdpSocket::IsBroadcast()
+{
+ int is_broadcast = 0;
+ socklen_t size;
+
+ if (GetSocket() == INVALID_SOCKET)
+ {
+ CreateConnection();
+ }
+ if (getsockopt(GetSocket(), SOL_SOCKET, SO_BROADCAST, (char *)&is_broadcast, &size) == -1)
+ {
+ Handler().LogError(this, "IsBroadcast", Errno, StrError(Errno), LOG_LEVEL_WARNING);
+ }
+ return is_broadcast != 0;
+}
+
+
+void UdpSocket::SetMulticastTTL(int ttl)
+{
+ if (GetSocket() == INVALID_SOCKET)
+ {
+ CreateConnection();
+ }
+ if (setsockopt(GetSocket(), SOL_IP, IP_MULTICAST_TTL, (char *)&ttl, sizeof(int)) == -1)
+ {
+ Handler().LogError(this, "SetMulticastTTL", Errno, StrError(Errno), LOG_LEVEL_WARNING);
+ }
+}
+
+
+int UdpSocket::GetMulticastTTL()
+{
+ int ttl = 0;
+ socklen_t size = sizeof(int);
+
+ if (GetSocket() == INVALID_SOCKET)
+ {
+ CreateConnection();
+ }
+ if (getsockopt(GetSocket(), SOL_IP, IP_MULTICAST_TTL, (char *)&ttl, &size) == -1)
+ {
+ Handler().LogError(this, "GetMulticastTTL", Errno, StrError(Errno), LOG_LEVEL_WARNING);
+ }
+ return ttl;
+}
+
+
+void UdpSocket::SetMulticastLoop(bool x)
+{
+ if (GetSocket() == INVALID_SOCKET)
+ {
+ CreateConnection();
+ }
+#ifdef ENABLE_IPV6
+#ifdef IPPROTO_IPV6
+ if (IsIpv6())
+ {
+ int val = x ? 1 : 0;
+ if (setsockopt(GetSocket(), IPPROTO_IPV6, IPV6_MULTICAST_LOOP, (char *)&val, sizeof(int)) == -1)
+ {
+ Handler().LogError(this, "SetMulticastLoop", Errno, StrError(Errno), LOG_LEVEL_WARNING);
+ }
+ return;
+ }
+#endif
+#endif
+ int val = x ? 1 : 0;
+ if (setsockopt(GetSocket(), SOL_IP, IP_MULTICAST_LOOP, (char *)&val, sizeof(int)) == -1)
+ {
+ Handler().LogError(this, "SetMulticastLoop", Errno, StrError(Errno), LOG_LEVEL_WARNING);
+ }
+}
+
+
+bool UdpSocket::IsMulticastLoop()
+{
+ if (GetSocket() == INVALID_SOCKET)
+ {
+ CreateConnection();
+ }
+#ifdef ENABLE_IPV6
+#ifdef IPPROTO_IPV6
+ if (IsIpv6())
+ {
+ int is_loop = 0;
+ socklen_t size = sizeof(int);
+ if (getsockopt(GetSocket(), IPPROTO_IPV6, IPV6_MULTICAST_LOOP, (char *)&is_loop, &size) == -1)
+ {
+ Handler().LogError(this, "IsMulticastLoop", Errno, StrError(Errno), LOG_LEVEL_WARNING);
+ }
+ return is_loop ? true : false;
+ }
+#endif
+#endif
+ int is_loop = 0;
+ socklen_t size = sizeof(int);
+ if (getsockopt(GetSocket(), SOL_IP, IP_MULTICAST_LOOP, (char *)&is_loop, &size) == -1)
+ {
+ Handler().LogError(this, "IsMulticastLoop", Errno, StrError(Errno), LOG_LEVEL_WARNING);
+ }
+ return is_loop ? true : false;
+}
+
+
+void UdpSocket::AddMulticastMembership(const std::string& group, const std::string& local_if, int if_index)
+{
+ if (GetSocket() == INVALID_SOCKET)
+ {
+ CreateConnection();
+ }
+#ifdef ENABLE_IPV6
+#ifdef IPPROTO_IPV6
+ if (IsIpv6())
+ {
+ struct ipv6_mreq x;
+ struct in6_addr addr;
+ if (Utility::u2ip( group, addr ))
+ {
+ x.ipv6mr_multiaddr = addr;
+ x.ipv6mr_interface = if_index;
+ if (setsockopt(GetSocket(), IPPROTO_IPV6, IPV6_ADD_MEMBERSHIP, (char *)&x, sizeof(struct ipv6_mreq)) == -1)
+ {
+ Handler().LogError(this, "AddMulticastMembership", Errno, StrError(Errno), LOG_LEVEL_WARNING);
+ }
+ }
+ return;
+ }
+#endif
+#endif
+ struct ip_mreq x; // ip_mreqn
+ ipaddr_t addr;
+ if (Utility::u2ip( group, addr ))
+ {
+ memcpy(&x.imr_multiaddr.s_addr, &addr, sizeof(addr));
+ Utility::u2ip( local_if, addr);
+ memcpy(&x.imr_interface.s_addr, &addr, sizeof(addr));
+// x.imr_ifindex = if_index;
+ if (setsockopt(GetSocket(), SOL_IP, IP_ADD_MEMBERSHIP, (char *)&x, sizeof(struct ip_mreq)) == -1)
+ {
+ Handler().LogError(this, "AddMulticastMembership", Errno, StrError(Errno), LOG_LEVEL_WARNING);
+ }
+ }
+}
+
+
+void UdpSocket::DropMulticastMembership(const std::string& group, const std::string& local_if, int if_index)
+{
+ if (GetSocket() == INVALID_SOCKET)
+ {
+ CreateConnection();
+ }
+#ifdef ENABLE_IPV6
+#ifdef IPPROTO_IPV6
+ if (IsIpv6())
+ {
+ struct ipv6_mreq x;
+ struct in6_addr addr;
+ if (Utility::u2ip( group, addr ))
+ {
+ x.ipv6mr_multiaddr = addr;
+ x.ipv6mr_interface = if_index;
+ if (setsockopt(GetSocket(), IPPROTO_IPV6, IPV6_DROP_MEMBERSHIP, (char *)&x, sizeof(struct ipv6_mreq)) == -1)
+ {
+ Handler().LogError(this, "DropMulticastMembership", Errno, StrError(Errno), LOG_LEVEL_WARNING);
+ }
+ }
+ return;
+ }
+#endif
+#endif
+ struct ip_mreq x; // ip_mreqn
+ ipaddr_t addr;
+ if (Utility::u2ip( group, addr ))
+ {
+ memcpy(&x.imr_multiaddr.s_addr, &addr, sizeof(addr));
+ Utility::u2ip( local_if, addr);
+ memcpy(&x.imr_interface.s_addr, &addr, sizeof(addr));
+// x.imr_ifindex = if_index;
+ if (setsockopt(GetSocket(), SOL_IP, IP_DROP_MEMBERSHIP, (char *)&x, sizeof(struct ip_mreq)) == -1)
+ {
+ Handler().LogError(this, "DropMulticastMembership", Errno, StrError(Errno), LOG_LEVEL_WARNING);
+ }
+ }
+}
+
+
+#ifdef ENABLE_IPV6
+#ifdef IPPROTO_IPV6
+void UdpSocket::SetMulticastHops(int hops)
+{
+ if (GetSocket() == INVALID_SOCKET)
+ {
+ CreateConnection();
+ }
+ if (!IsIpv6())
+ {
+ Handler().LogError(this, "SetMulticastHops", 0, "Ipv6 only", LOG_LEVEL_ERROR);
+ return;
+ }
+ if (setsockopt(GetSocket(), IPPROTO_IPV6, IPV6_MULTICAST_HOPS, (char *)&hops, sizeof(int)) == -1)
+ {
+ Handler().LogError(this, "SetMulticastHops", Errno, StrError(Errno), LOG_LEVEL_WARNING);
+ }
+}
+
+
+int UdpSocket::GetMulticastHops()
+{
+ if (GetSocket() == INVALID_SOCKET)
+ {
+ CreateConnection();
+ }
+ if (!IsIpv6())
+ {
+ Handler().LogError(this, "SetMulticastHops", 0, "Ipv6 only", LOG_LEVEL_ERROR);
+ return -1;
+ }
+ int hops = 0;
+ socklen_t size = sizeof(int);
+ if (getsockopt(GetSocket(), IPPROTO_IPV6, IPV6_MULTICAST_HOPS, (char *)&hops, &size) == -1)
+ {
+ Handler().LogError(this, "GetMulticastHops", Errno, StrError(Errno), LOG_LEVEL_WARNING);
+ }
+ return hops;
+}
+#endif // IPPROTO_IPV6
+#endif
+
+
+bool UdpSocket::IsBound()
+{
+ return m_bind_ok;
+}
+
+
+void UdpSocket::OnRawData(const char *buf, size_t len, struct sockaddr *sa, socklen_t sa_len)
+{
+}
+
+
+void UdpSocket::OnRawData(const char *buf, size_t len, struct sockaddr *sa, socklen_t sa_len, struct timeval *ts)
+{
+}
+
+
+port_t UdpSocket::GetPort()
+{
+ return m_port;
+}
+
+
+int UdpSocket::GetLastSizeWritten()
+{
+ return m_last_size_written;
+}
+
+
+void UdpSocket::SetTimestamp(bool x)
+{
+ m_b_read_ts = x;
+}
+
+
+#ifdef SOCKETS_NAMESPACE
+}
+#endif
+
+