public static bool TryConnect(string ipString, int port)
{
if (!Initialized)
{
var wsaData = new WSAData();
if (WSAStartup(0x0202, out wsaData) != 0) return false;
m_Buffer = typeof(SocketAddress).GetField("m_Buffer", (BindingFlags.Instance | BindingFlags.NonPublic));
Initialized = true;
}
IPAddress address;
if (!IPAddress.TryParse(ipString, out address)) return false;
if (!((port >= 0) && (port <= 0xffff))) return false;
var remoteEP = new IPEndPoint(address, port);
SocketAddress socketAddress = remoteEP.Serialize();
IntPtr m_Handle = WSASocket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp, IntPtr.Zero, 0, 1 /*overlapped*/);
if (m_Handle == new IntPtr(-1)) return false;
new SocketPermission(NetworkAccess.Connect, TransportType.Tcp, remoteEP.Address.ToString(), remoteEP.Port).Demand();
var buf = (byte[])m_Buffer.GetValue(socketAddress);
bool result = (WSAConnect(m_Handle, buf, socketAddress.Size, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero) == 0);
closesocket(m_Handle);
return result;
}
/// <summary>
/// Gets protocol number by name (tcp/udp/icmp etc')
/// </summary>
/// <param name="name">protocol name</param>
/// <returns>protocol number</returns>
public static int GetProtoByName(string name)
{
// Vorbedingung
if (string.IsNullOrEmpty(name))
{
throw new ArgumentNullException("name");
}
//check first in protocols file
if (File.Exists(etcFileHelper.GetFullFilename(etcFileHelper.ProtocolFilename)))
{
var protocols = etcFileHelper.ReadProtocols(etcFileHelper.GetFullFilename(etcFileHelper.ProtocolFilename));
var protocol = protocols.FirstOrDefault(i => i.Name.ToLower() == name.ToLower());
if (protocol != null)
return protocol.ProtocolNumber;
}
//failed, use API.
int result = 0;
int intResult = -1;
if (int.TryParse(name, out intResult))
{
result = System.Convert.ToInt32(name, CultureInfo.InvariantCulture);
}
else
{
WSAData dummy = new WSAData();
int sccuessful = NativeMethods.WSAStartup(0x0202, ref dummy);
if (sccuessful != 0)
{
throw CreateWSAException();
}
IntPtr intPtr = NativeMethods.GetProtocolByName(name);
try
{
if (intPtr != IntPtr.Zero)
{
ProtoEnt protoent = (ProtoEnt)Marshal.PtrToStructure(intPtr, typeof(ProtoEnt));
result = System.Convert.ToInt32(protoent.p_proto);
}
else
{
throw CreateWSAException();
}
}
finally
{
sccuessful = NativeMethods.WSACleanup();
if (sccuessful != 0)
{
throw CreateWSAException();
}
}
}
return result;
}
public static extern Int32 WSAStartup(short wVersionRequested, ref WSAData wsaData);
/// <summary>
/// Gets service port number by name/protocol
/// </summary>
/// <remarks>http://stackoverflow.com/questions/3457977/convert-service-name-to-port</remarks>
/// <param name="name">name of service</param>
/// <param name="protocol">protocol the service is using</param>
/// <returns>port number</returns>
public static int GetServByName(string name,string protocol)
{
// Vorbedingung
if (string.IsNullOrEmpty(name))
{
throw new ArgumentNullException("name");
}
//check first in services file
if (File.Exists(etcFileHelper.GetFullFilename(etcFileHelper.ServicesFilename)))
{
var services = etcFileHelper.ReadServices(etcFileHelper.GetFullFilename(etcFileHelper.ServicesFilename));
var service = services.FirstOrDefault(i => i.Name.ToLower() == name.ToLower() && i.Protocol.ToLower() == protocol.ToLower());
if (service != null)
return service.Port;
}
//we failed to find an appropriate service in the file, use the api instead.
int result = 0;
int intResult = -1;
if (int.TryParse(name, out intResult))
{
result = System.Convert.ToInt32(name, CultureInfo.InvariantCulture);
}
else
{
WSAData dummy = new WSAData();
int sccuessful = NativeMethods.WSAStartup(0x0202, ref dummy);
if (sccuessful != 0)
{
throw CreateWSAException();
}
IntPtr intPtr = NativeMethods.GetServByName(name, protocol);
try
{
if (intPtr != IntPtr.Zero)
{
Servent servent = (Servent)Marshal.PtrToStructure(intPtr, typeof(Servent));
result = System.Convert.ToInt32(IPAddress.NetworkToHostOrder(servent.s_port));
}
else
{
throw CreateWSAException();
}
}
finally
{
sccuessful = NativeMethods.WSACleanup();
if (sccuessful != 0)
{
throw CreateWSAException();
}
}
}
return result;
}
internal static void InitializeSockets() {
if (!s_Initialized) {
lock(InternalSyncObject){
if (!s_Initialized) {
WSAData wsaData = new WSAData();
SocketError errorCode =
UnsafeNclNativeMethods.OSSOCK.WSAStartup(
(short)0x0202, // we need 2.2
out wsaData );
if (errorCode!=SocketError.Success) {
//
// failed to initialize, throw
//
// WSAStartup does not set LastWin32Error
throw new SocketException(errorCode);
}
#if !FEATURE_PAL
//
// we're on WinNT4 or greater, we could use CompletionPort if we
// wanted. check if the user has disabled this functionality in
// the registry, otherwise use CompletionPort.
//
#if DEBUG
BooleanSwitch disableCompletionPortSwitch = new BooleanSwitch("DisableNetCompletionPort", "System.Net disabling of Completion Port");
//
// the following will be true if they've disabled the completionPort
//
UseOverlappedIO = disableCompletionPortSwitch.Enabled;
#endif
bool ipv4 = true;
bool ipv6 = true;
SafeCloseSocket.InnerSafeCloseSocket socketV4 =
UnsafeNclNativeMethods.OSSOCK.WSASocket(
AddressFamily.InterNetwork,
SocketType.Dgram,
ProtocolType.IP,
IntPtr.Zero,
0,
(SocketConstructorFlags) 0);
if (socketV4.IsInvalid) {
errorCode = (SocketError) Marshal.GetLastWin32Error();
if (errorCode == SocketError.AddressFamilyNotSupported)
ipv4 = false;
}
socketV4.Close();
SafeCloseSocket.InnerSafeCloseSocket socketV6 =
UnsafeNclNativeMethods.OSSOCK.WSASocket(
AddressFamily.InterNetworkV6,
SocketType.Dgram,
ProtocolType.IP,
IntPtr.Zero,
0,
(SocketConstructorFlags) 0);
if (socketV6.IsInvalid) {
errorCode = (SocketError) Marshal.GetLastWin32Error();
if (errorCode == SocketError.AddressFamilyNotSupported)
ipv6 = false;
}
socketV6.Close();
// <
#if COMNET_DISABLEIPV6
//
// Turn off IPv6 support
//
ipv6 = false;
#else
//
// Now read the switch as the final check: by checking the current value for IPv6
// support we may be able to avoid a painful configuration file read.
//
if (ipv6) {
s_OSSupportsIPv6 = true;
ipv6 = SettingsSectionInternal.Section.Ipv6Enabled;
}
#endif
//
// Update final state
//
s_SupportsIPv4 = ipv4;
s_SupportsIPv6 = ipv6;
#else //!FEATURE_PAL
s_SupportsIPv4 = true;
s_SupportsIPv6 = false;
#endif //!FEATURE_PAL
// Cache some settings locally.
#if !FEATURE_PAL // perfcounter
s_PerfCountersEnabled = NetworkingPerfCounters.Instance.Enabled;
#endif
s_Initialized = true;
}
}
}
}
public static extern int WSAStartup(
UInt16 wVersionRequested,
WSAData wsaData);
private static extern int WSAStartup([In] short wVersionRequested, out WSAData lpWSAData);
//
// Overlapped constants.
//
internal static bool InitializeSockets() {
if (m_Initialized) {
return true;
}
WSAData wsaData = new WSAData();
int errorCode =
UnsafeNclNativeMethods.OSSOCK.WSAStartup(
(short)0x0202, // we need 2.2
out wsaData );
if (errorCode!=SocketErrors.Success) {
//
// failed to initialize, throw
//
throw new SocketException();
}
//
// at this point we need to figure out if we're going to use CompletionPort,
// which are supported only on WinNT, or classic Win32 OverlappedIO, so
//
return true;
}
static extern Int32 WSAStartup(Int16 wVersionRequested, out WSAData wsaData);
internal static void InitializeSockets()
{
if (Socket.s_Initialized)
return;
lock (Socket.InternalSyncObject)
{
if (Socket.s_Initialized)
return;
WSAData local_0 = new WSAData();
SocketError local_1 = UnsafeNclNativeMethods.OSSOCK.WSAStartup((short) 514, out local_0);
if (local_1 != SocketError.Success)
throw new SocketException(local_1);
bool local_2 = true;
bool local_3 = true;
SafeCloseSocket.InnerSafeCloseSocket local_4 = UnsafeNclNativeMethods.OSSOCK.WSASocket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.IP, IntPtr.Zero, 0U, (SocketConstructorFlags) 0);
if (local_4.IsInvalid && Marshal.GetLastWin32Error() == 10047)
local_2 = false;
local_4.Close();
SafeCloseSocket.InnerSafeCloseSocket local_5 = UnsafeNclNativeMethods.OSSOCK.WSASocket(AddressFamily.InterNetworkV6, SocketType.Dgram, ProtocolType.IP, IntPtr.Zero, 0U, (SocketConstructorFlags) 0);
if (local_5.IsInvalid && Marshal.GetLastWin32Error() == 10047)
local_3 = false;
local_5.Close();
if (local_3)
{
Socket.s_OSSupportsIPv6 = true;
local_3 = SettingsSectionInternal.Section.Ipv6Enabled;
}
Socket.s_SupportsIPv4 = local_2;
Socket.s_SupportsIPv6 = local_3;
Socket.s_PerfCountersEnabled = NetworkingPerfCounters.Instance.Enabled;
Socket.s_Initialized = true;
}
}
internal static void InitializeSockets()
{
if (!s_Initialized) {
lock(InternalSyncObject){
if (!s_Initialized) {
WSAData wsaData = new WSAData();
SocketError errorCode =
UnsafeNclNativeMethods.OSSOCK.WSAStartup(
(short)0x0202, // we need 2.2
out wsaData );
if (errorCode!=SocketError.Success) {
//
// failed to initialize, throw
//
throw new SocketException();
}
s_SupportsIPv4 = true;
s_SupportsIPv6 = false;
s_Initialized = true;
}
}
}
}
internal static extern SocketError WSAStartup(
[In] short wVersionRequested,
[Out] out WSAData lpWSAData
);
internal static extern SocketError WSAStartup([In] short wVersionRequested, out WSAData lpWSAData);
internal static void InitializeSockets()
{
if (!s_Initialized)
{
lock (InternalSyncObject)
{
if (!s_Initialized)
{
WSAData lpWSAData = new WSAData();
if (UnsafeNclNativeMethods.OSSOCK.WSAStartup(0x202, out lpWSAData) != SocketError.Success)
{
throw new SocketException();
}
if (!ComNetOS.IsWinNt)
{
UseOverlappedIO = true;
}
bool flag = true;
bool flag2 = true;
SafeCloseSocket.InnerSafeCloseSocket socket = UnsafeNclNativeMethods.OSSOCK.WSASocket(System.Net.Sockets.AddressFamily.InterNetwork, System.Net.Sockets.SocketType.Dgram, System.Net.Sockets.ProtocolType.IP, IntPtr.Zero, 0, 0);
if (socket.IsInvalid && (Marshal.GetLastWin32Error() == 0x273f))
{
flag = false;
}
socket.Close();
SafeCloseSocket.InnerSafeCloseSocket socket2 = UnsafeNclNativeMethods.OSSOCK.WSASocket(System.Net.Sockets.AddressFamily.InterNetworkV6, System.Net.Sockets.SocketType.Dgram, System.Net.Sockets.ProtocolType.IP, IntPtr.Zero, 0, 0);
if (socket2.IsInvalid && (Marshal.GetLastWin32Error() == 0x273f))
{
flag2 = false;
}
socket2.Close();
flag2 = flag2 && ComNetOS.IsPostWin2K;
if (flag2)
{
s_OSSupportsIPv6 = true;
flag2 = SettingsSectionInternal.Section.Ipv6Enabled;
}
s_SupportsIPv4 = flag;
s_SupportsIPv6 = flag2;
s_PerfCountersEnabled = NetworkingPerfCounters.Instance.Enabled;
s_Initialized = true;
}
}
}
}