public InterfaceAddress[] GetInterfaceAddresses()
{
List <InterfaceAddress> result = new List <InterfaceAddress>();
IntPtr ifap;
if (getifaddrs(out ifap) != 0)
{
throw new SystemException("getifaddrs() failed");
}
try {
IntPtr next = ifap;
while (next != IntPtr.Zero)
{
ifaddrs addr = (ifaddrs)Marshal.PtrToStructure(next, typeof(ifaddrs));
string name = addr.ifa_name;
if (addr.ifa_addr != IntPtr.Zero)
{
int index = if_nametoindex(name);
sockaddr_in sockaddr = (sockaddr_in)Marshal.PtrToStructure(addr.ifa_addr, typeof(sockaddr_in));
if (sockaddr.sin_family == AF_INET6)
{
sockaddr_in6 nmask = (sockaddr_in6)Marshal.PtrToStructure(addr.ifa_netmask, typeof(sockaddr_in6));
int prefixLength = GetIPv6PrefixLength(nmask.sin6_addr.u6_addr8);
sockaddr_in6 sockaddr6 = (sockaddr_in6)Marshal.PtrToStructure(addr.ifa_addr, typeof(sockaddr_in6));
IPAddress address = new IPAddress(sockaddr6.sin6_addr.u6_addr8, sockaddr6.sin6_scope_id);
InterfaceAddress info = new InterfaceAddress(index, name, address, prefixLength);
result.Add(info);
}
else if (sockaddr.sin_family == AF_INET)
{
sockaddr_in netmaskaddr = (sockaddr_in)Marshal.PtrToStructure(addr.ifa_netmask, typeof(sockaddr_in));
IPAddress netmask = new IPAddress(netmaskaddr.in_addr);
IPAddress address = new IPAddress(sockaddr.in_addr);
InterfaceAddress info = new InterfaceAddress(index, name, address, netmask);
result.Add(info);
}
}
next = addr.ifa_next;
}
} finally {
freeifaddrs(ifap);
}
return(result.ToArray());
}
static void Bind(TcpListener listener, string ipAddress, int port, bool ip6 = false, bool dualstack = false)
{
if (ip6)
{
sockaddr_in6 address = CreateSockaddrIp6(ipAddress.ToString(), port);
UVException.ThrowIfError(UVInterop.uv_tcp_bind(listener.Handle, ref address, (uint)(dualstack ? 0 : 1)));
}
else
{
sockaddr_in address = CreateSockaddr(ipAddress.ToString(), port);
UVException.ThrowIfError(UVInterop.uv_tcp_bind(listener.Handle, ref address, 0));
}
}
public override string ToString()
{
int StrLength = 256;
StringBuilder sb = new StringBuilder(StrLength);
sockaddr_in6 saddr = new sockaddr_in6();
saddr.sin6_family = (int)AddressFamily.InterNetworkV6;
saddr.sin6_scope_id = m_ScopeIdentifier;
saddr.sin6_addr = m_Address;
int errorCode = WSAAddressToString(ref saddr, 28,
IntPtr.Zero,
sb,
ref StrLength);
return(sb.ToString());
}
public static IPv6Address Parse(string address)
{
if (address == null)
{
throw new ArgumentNullException("Bad string address");
}
TryAgain:
int Size = 28;
sockaddr_in6 SockAddrIN6 = new sockaddr_in6();
int ret = WSAStringToAddress(address, AddressFamily.InterNetworkV6,
IntPtr.Zero, ref SockAddrIN6, ref Size);
if (ret != 0)
{
int Err = Marshal.GetLastWin32Error();
if (Err == 10093)
{
WSAData wsaData = new WSAData();
ret = WSAStartup((short)0x0202, out wsaData);
if (ret != 0)
{
throw new ArgumentException("WSAStartup failed");
}
goto TryAgain;
}
throw new ArgumentException("WSAStringToAddress failed for " + address + " error " + Err.ToString());
}
IPv6Address instance = new IPv6Address(SockAddrIN6.sin6_addr,
SockAddrIN6.sin6_scope_id);
return(instance);
}
//Removed, replace this functionality by using bind(IPAddress.Any, ... or IPAddress.IPv6Any);
public static IPAddress GetLocalRoutingInterface(IPAddress ipAddress)
{
Socket sock = null;
IntPtr ptrInAddr = IntPtr.Zero;
IntPtr ptrOutAddr = IntPtr.Zero;
if ( ipAddress.AddressFamily == AddressFamily.InterNetwork )
{
sock = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
sockaddr_in inAddr = new sockaddr_in();
sockaddr_in outAddr = new sockaddr_in();
try
{
ipAddress.GetAddressBytes().CopyTo(inAddr.sin_addr, 0);
// create a sockaddr_in function for our destination IP address
inAddr.sin_port = IPAddress.HostToNetworkOrder(port);
// create an block of unmanaged memory for use by Marshal.StructureToPtr. We seem to need to do this, even though
// StructureToPtr will go ahead and release/reallocate the memory
ptrInAddr = Marshal.AllocCoTaskMem(Marshal.SizeOf(inAddr));
// Copy inAddr from managed to unmanaged, reallocating the unmanaged memory
Marshal.StructureToPtr(inAddr, ptrInAddr, true);
// Create a managed byte array to hold the structure, but in byte array form
byte[] byteInAddr = new byte[Marshal.SizeOf(inAddr)];
// Copy the structure from unmanaged ptr into managed byte array
Marshal.Copy(ptrInAddr, byteInAddr, 0, byteInAddr.Length);
// Create a second managed byte array to hold the output sockaddr_in structure
byte[] byteOutAddr = new byte[Marshal.SizeOf(inAddr)];
// Make the call to IOControl, asking for the Interface we should use if we want to route a packet to inAddr
sock.IOControl(
SIO_ROUTING_INTERFACE_QUERY,
byteInAddr,
byteOutAddr
);
// create the memory placeholder for our local interface
// Copy the results from the byteOutAddr into an unmanaged pointer
ptrOutAddr = Marshal.AllocCoTaskMem(Marshal.SizeOf(outAddr));
Marshal.Copy(byteOutAddr, 0, ptrOutAddr, byteOutAddr.Length);
// Copy the data from the unmanaged pointer to the ourAddr structure
Marshal.PtrToStructure(ptrOutAddr, outAddr);
}
catch(SocketException se)
{
// Perhaps there were no interfaces present, AKA No Network Adapters enabled/installed and connected to media (wired or wireless)
EventLog.WriteEntry("RtpListener", se.ToString(), EventLogEntryType.Warning, 99);
}
finally
{
// Release the socket
sock = null;
Marshal.FreeCoTaskMem(ptrInAddr);
Marshal.FreeCoTaskMem(ptrOutAddr);
}
// Return an IPAddress structure that is initialized with the value of the IP address contained in the outAddr structure
if (outAddr != null)
{
int len = outAddr.sin_addr.Length;
// Have to convert the byte[] to a uint. It turns out that the IPAddress ctor won't create an IPv4 address from four bytes, it only uses the byte[] ctor for 16 byte IPv6 construction?!?
uint ipAsInt = 0;
for (int i = len; i > 0; i--)
{
ipAsInt = ipAsInt * 256 + outAddr.sin_addr[i - 1];
}
externalInterface = new IPAddress(ipAsInt);
return(new IPAddress(ipAsInt));
}
else
{
return null;
}
}
if ( Socket.OSSupportsIPv6 && ipAddress.AddressFamily == AddressFamily.InterNetworkV6 )
{
sock = new Socket(AddressFamily.InterNetworkV6, SocketType.Dgram, ProtocolType.Udp);
sockaddr_in6 inAddr = new sockaddr_in6();
sockaddr_in6 outAddr = new sockaddr_in6();
try
{
ipAddress.GetAddressBytes().CopyTo(inAddr.sin_addr, 0);
// create a sockaddr_in function for our destination IP address
inAddr.sin_port = IPAddress.HostToNetworkOrder(port);
// create an block of unmanaged memory for use by Marshal.StructureToPtr. We seem to need to do this, even though
// StructureToPtr will go ahead and release/reallocate the memory
ptrInAddr = Marshal.AllocCoTaskMem(Marshal.SizeOf(inAddr));
// Copy inAddr from managed to unmanaged, reallocating the unmanaged memory
Marshal.StructureToPtr(inAddr, ptrInAddr, true);
// Create a managed byte array to hold the structure, but in byte array form
byte[] byteInAddr = new byte[Marshal.SizeOf(inAddr)];
// Copy the structure from unmanaged ptr into managed byte array
Marshal.Copy(ptrInAddr, byteInAddr, 0, byteInAddr.Length);
// Create a second managed byte array to hold the output sockaddr_in structure
byte[] byteOutAddr = new byte[Marshal.SizeOf(inAddr)];
// Make the call to IOControl, asking for the Interface we should use if we want to route a packet to inAddr
sock.IOControl(
SIO_ROUTING_INTERFACE_QUERY,
byteInAddr,
byteOutAddr
);
// create the memory placeholder for our local interface
// Copy the results from the byteOutAddr into an unmanaged pointer
ptrOutAddr = Marshal.AllocCoTaskMem(Marshal.SizeOf(outAddr));
Marshal.Copy(byteOutAddr, 0, ptrOutAddr, byteOutAddr.Length);
// Copy the data from the unmanaged pointer to the ourAddr structure
Marshal.PtrToStructure(ptrOutAddr, outAddr);
}
catch (SocketException se)
{
// Perhaps there were no interfaces present, AKA No Network Adapters enabled/installed and connected to media (wired or wireless)
EventLog.WriteEntry("RtpListener", se.ToString(), EventLogEntryType.Warning, 99);
}
finally
{
// Release the socket
sock = null;
Marshal.FreeCoTaskMem(ptrInAddr);
Marshal.FreeCoTaskMem(ptrOutAddr);
}
// Return an IPAddress structure that is initialized with the value of the IP address contained in the outAddr structure
if (outAddr != null)
{
externalInterface = new IPAddress(outAddr.sin_addr, outAddr.sin6_scope_id);
return (new IPAddress(outAddr.sin_addr, outAddr.sin6_scope_id));
}
else
{
return null;
}
}
return null;
}
//Removed, replace this functionality by using bind(IPAddress.Any, ... or IPAddress.IPv6Any);
public static IPAddress GetLocalRoutingInterface(IPAddress ipAddress)
{
Socket sock = null;
IntPtr ptrInAddr = IntPtr.Zero;
IntPtr ptrOutAddr = IntPtr.Zero;
if (ipAddress.AddressFamily == AddressFamily.InterNetwork)
{
sock = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
sockaddr_in inAddr = new sockaddr_in();
sockaddr_in outAddr = new sockaddr_in();
try
{
ipAddress.GetAddressBytes().CopyTo(inAddr.sin_addr, 0);
// create a sockaddr_in function for our destination IP address
inAddr.sin_port = IPAddress.HostToNetworkOrder(port);
// create an block of unmanaged memory for use by Marshal.StructureToPtr. We seem to need to do this, even though
// StructureToPtr will go ahead and release/reallocate the memory
ptrInAddr = Marshal.AllocCoTaskMem(Marshal.SizeOf(inAddr));
// Copy inAddr from managed to unmanaged
Marshal.StructureToPtr(inAddr, ptrInAddr, false);
// Create a managed byte array to hold the structure, but in byte array form
byte[] byteInAddr = new byte[Marshal.SizeOf(inAddr)];
// Copy the structure from unmanaged ptr into managed byte array
Marshal.Copy(ptrInAddr, byteInAddr, 0, byteInAddr.Length);
// Create a second managed byte array to hold the output sockaddr_in structure
byte[] byteOutAddr = new byte[Marshal.SizeOf(inAddr)];
// Make the call to IOControl, asking for the Interface we should use if we want to route a packet to inAddr
sock.IOControl(
SIO_ROUTING_INTERFACE_QUERY,
byteInAddr,
byteOutAddr
);
// create the memory placeholder for our local interface
// Copy the results from the byteOutAddr into an unmanaged pointer
ptrOutAddr = Marshal.AllocCoTaskMem(Marshal.SizeOf(outAddr));
Marshal.Copy(byteOutAddr, 0, ptrOutAddr, byteOutAddr.Length);
// Copy the data from the unmanaged pointer to the ourAddr structure
Marshal.PtrToStructure(ptrOutAddr, outAddr);
}
catch (SocketException se)
{
// Perhaps there were no interfaces present, AKA No Network Adapters enabled/installed and connected to media (wired or wireless)
EventLog.WriteEntry("RtpSession", se.ToString(), EventLogEntryType.Warning, 99);
}
finally
{
// Release the socket
sock = null;
Marshal.FreeCoTaskMem(ptrInAddr);
Marshal.FreeCoTaskMem(ptrOutAddr);
}
// Return an IPAddress structure that is initialized with the value of the IP address contained in the outAddr structure
if (outAddr != null)
{
int len = outAddr.sin_addr.Length;
// Have to convert the byte[] to a uint. It turns out that the IPAddress ctor won't create an IPv4 address from four bytes, it only uses the byte[] ctor for 16 byte IPv6 construction?!?
uint ipAsInt = 0;
for (int i = len; i > 0; i--)
{
ipAsInt = ipAsInt * 256 + outAddr.sin_addr[i - 1];
}
externalInterface = new IPAddress(ipAsInt);
return(new IPAddress(ipAsInt));
}
else
{
return(null);
}
}
if (Socket.OSSupportsIPv6 && ipAddress.AddressFamily == AddressFamily.InterNetworkV6)
{
sock = new Socket(AddressFamily.InterNetworkV6, SocketType.Dgram, ProtocolType.Udp);
sockaddr_in6 inAddr = new sockaddr_in6();
sockaddr_in6 outAddr = new sockaddr_in6();
try
{
ipAddress.GetAddressBytes().CopyTo(inAddr.sin_addr, 0);
// create a sockaddr_in function for our destination IP address
inAddr.sin_port = IPAddress.HostToNetworkOrder(port);
// create an block of unmanaged memory for use by Marshal.StructureToPtr. We seem to need to do this, even though
// StructureToPtr will go ahead and release/reallocate the memory
ptrInAddr = Marshal.AllocCoTaskMem(Marshal.SizeOf(inAddr));
// Copy inAddr from managed to unmanaged
Marshal.StructureToPtr(inAddr, ptrInAddr, false);
// Create a managed byte array to hold the structure, but in byte array form
byte[] byteInAddr = new byte[Marshal.SizeOf(inAddr)];
// Copy the structure from unmanaged ptr into managed byte array
Marshal.Copy(ptrInAddr, byteInAddr, 0, byteInAddr.Length);
// Create a second managed byte array to hold the output sockaddr_in structure
byte[] byteOutAddr = new byte[Marshal.SizeOf(inAddr)];
// Make the call to IOControl, asking for the Interface we should use if we want to route a packet to inAddr
sock.IOControl(
SIO_ROUTING_INTERFACE_QUERY,
byteInAddr,
byteOutAddr
);
// create the memory placeholder for our local interface
// Copy the results from the byteOutAddr into an unmanaged pointer
ptrOutAddr = Marshal.AllocCoTaskMem(Marshal.SizeOf(outAddr));
Marshal.Copy(byteOutAddr, 0, ptrOutAddr, byteOutAddr.Length);
// Copy the data from the unmanaged pointer to the ourAddr structure
Marshal.PtrToStructure(ptrOutAddr, outAddr);
}
catch (SocketException se)
{
// Perhaps there were no interfaces present, AKA No Network Adapters enabled/installed and connected to media (wired or wireless)
EventLog.WriteEntry("RtpSession", se.ToString(), EventLogEntryType.Warning, 99);
}
finally
{
// Release the socket
sock = null;
Marshal.FreeCoTaskMem(ptrInAddr);
Marshal.FreeCoTaskMem(ptrOutAddr);
}
// Return an IPAddress structure that is initialized with the value of the IP address contained in the outAddr structure
if (outAddr != null)
{
externalInterface = new IPAddress(outAddr.sin_addr, outAddr.sin6_scope_id);
return(new IPAddress(outAddr.sin_addr, outAddr.sin6_scope_id));
}
else
{
return(null);
}
}
return(null);
}
private void IPEndPointToNative(IPEndPoint endPoint, out rtl.SOCKADDR_IN lIPv4, out sockaddr_in6 lIPv6, out void *ipPointer, out int ipSize)
{
switch (endPoint.AddressFamily)
{
case AddressFamily.InterNetworkV6:
lIPv6.sin6_family = AddressFamily.InterNetworkV6;
lIPv6.sin6_port = rtl.htons(endPoint.Port);
lIPv6.sin6_scope_id = endPoint.Address.ScopeId;
var lBytes = endPoint.Address.GetAddressBytes();
for (int i = 0; i < 16; i++)
{
lIPv6.sin6_addr.u.Byte[i] = lBytes[i];
}
ipPointer = &lIPv6;
ipSize = sizeof(sockaddr_in6);
break;
default:
lIPv4.sin_family = AddressFamily.InterNetwork;
lIPv4.sin_port = rtl.htons(endPoint.Port);
lIPv4.sin_addr.S_un.S_addr = endPoint.Address.Address;
ipSize = sizeof(rtl.SOCKADDR_IN);
ipPointer = &lIPv4;
break;
}
}
private void IPEndPointToNative(IPEndPoint endPoint, out rtl.SOCKADDR_IN lIPv4, out sockaddr_in6 lIPv6, out void *ipPointer, out int ipSize)
#endif
{
switch (endPoint.AddressFamily)
{
case AddressFamily.InterNetworkV6:
lIPv6.sin6_family = AddressFamily.InterNetworkV6;
#if toffee
lIPv6.sin6_port = htons(endPoint.Port);
#else
lIPv6.sin6_port = rtl.htons(endPoint.Port);
#endif
lIPv6.sin6_scope_id = endPoint.Address.ScopeId;
var lBytes = endPoint.Address.GetAddressBytes();
for (int i = 0; i < 16; i++)
#if toffee
{ lIPv6.sin6_addr.__u6_addr.__u6_addr8[i] = lBytes[i]; }
#elif posix
{ lIPv6.sin6_addr.__in6_u.__u6_addr8[i] = lBytes[i]; }
#else
{ lIPv6.sin6_addr.u.Byte[i] = lBytes[i]; }
#endif
ipPointer = &lIPv6;
#if posix || toffee
ipSize = sizeof(rtl.__struct_sockaddr_in6);
#else
ipSize = sizeof(sockaddr_in6);
#endif
break;
default:
lIPv4.sin_family = AddressFamily.InterNetwork;
#if toffee
lIPv4.sin_port = htons(endPoint.Port);
#else
lIPv4.sin_port = rtl.htons(endPoint.Port);
#endif
#if posix || toffee
lIPv4.sin_addr.s_addr = endPoint.Address.Address;
ipSize = sizeof(rtl.__struct_sockaddr_in);
#else
lIPv4.sin_addr.S_un.S_addr = endPoint.Address.Address;
ipSize = sizeof(rtl.SOCKADDR_IN);
#endif
ipPointer = &lIPv4;
break;
}
}
public static extern int connect(IntPtr s, sockaddr_in6 addr, int addrsize);
internal static extern int WSAAddressToString(
[In] ref sockaddr_in6 socketAddress,
[In] int AddressLength,
[In] IntPtr ProtocolInfo,
[Out] StringBuilder AddressString,
[In, Out] ref int AddressStringLength);
internal static extern int WSAStringToAddress(
[In] string addressString,
[In] AddressFamily addressFamily,
[In] IntPtr lpProtocolInfo, // always passing in a 0
[In, Out] ref sockaddr_in6 socketAddress,
[In, Out] ref int socketAddressSize);
public static extern int connect(IntPtr s, sockaddr_in6 addr, int addrsize);
