| private SyncReleaseUnmanagedStructures ( ) : void | ||
| return | void | |
public static SocketError ReceiveMessageFrom(Socket socket, SafeCloseSocket handle, byte[] buffer, int offset, int size, ref SocketFlags socketFlags, Internals.SocketAddress socketAddress, out Internals.SocketAddress receiveAddress, out IPPacketInformation ipPacketInformation, out int bytesTransferred)
{
ReceiveMessageOverlappedAsyncResult asyncResult = new ReceiveMessageOverlappedAsyncResult(socket, null, null);
asyncResult.SetUnmanagedStructures(buffer, offset, size, socketAddress, socketFlags);
SocketError errorCode = SocketError.Success;
bytesTransferred = 0;
try
{
// This can throw ObjectDisposedException (retrieving the delegate AND resolving the handle).
if (socket.WSARecvMsgBlocking(
handle.DangerousGetHandle(),
Marshal.UnsafeAddrOfPinnedArrayElement(asyncResult._messageBuffer, 0),
out bytesTransferred,
IntPtr.Zero,
IntPtr.Zero) == SocketError.SocketError)
{
errorCode = (SocketError)Marshal.GetLastWin32Error();
}
}
finally
{
asyncResult.SyncReleaseUnmanagedStructures();
}
socketFlags = asyncResult.SocketFlags;
receiveAddress = asyncResult.SocketAddress;
ipPacketInformation = asyncResult.IPPacketInformation;
return(errorCode);
}
/// <devdoc>
/// <para>Receives a datagram into a specific location in the data buffer and stores
/// the end point.</para>
/// </devdoc>
public int ReceiveMessageFrom(byte[] buffer, int offset, int size, ref SocketFlags socketFlags, ref EndPoint remoteEP, out IPPacketInformation ipPacketInformation) {
if(s_LoggingEnabled)Logging.Enter(Logging.Sockets, this, "ReceiveMessageFrom", "");
if (CleanedUp) {
throw new ObjectDisposedException(this.GetType().FullName);
}
if (buffer==null) {
throw new ArgumentNullException("buffer");
}
if (remoteEP==null) {
throw new ArgumentNullException("remoteEP");
}
if (!CanTryAddressFamily(remoteEP.AddressFamily)) {
throw new ArgumentException(SR.GetString(SR.net_InvalidEndPointAddressFamily,
remoteEP.AddressFamily, addressFamily), "remoteEP");
}
if (offset<0 || offset>buffer.Length) {
throw new ArgumentOutOfRangeException("offset");
}
if (size<0 || size>buffer.Length-offset) {
throw new ArgumentOutOfRangeException("size");
}
if (m_RightEndPoint==null) {
throw new InvalidOperationException(SR.GetString(SR.net_sockets_mustbind));
}
ValidateBlockingMode();
// We don't do a CAS demand here because the contents of remoteEP aren't used by
// WSARecvMsg; all that matters is that we generate a unique-to-this-call SocketAddress
// with the right address family
EndPoint endPointSnapshot = remoteEP;
SocketAddress socketAddress = SnapshotAndSerialize(ref endPointSnapshot);
ReceiveMessageOverlappedAsyncResult asyncResult = new ReceiveMessageOverlappedAsyncResult(this,null,null);
asyncResult.SetUnmanagedStructures(buffer, offset, size, socketAddress, socketFlags);
// save a copy of the original EndPoint
SocketAddress socketAddressOriginal = endPointSnapshot.Serialize();
//setup structure
int bytesTransfered = 0;
SocketError errorCode = SocketError.Success;
SetReceivingPacketInformation();
try
{
// This can throw ObjectDisposedException (retrieving the delegate AND resolving the handle).
if (WSARecvMsg_Blocking(
m_Handle.DangerousGetHandle(),
Marshal.UnsafeAddrOfPinnedArrayElement(asyncResult.m_MessageBuffer,0),
out bytesTransfered,
IntPtr.Zero,
IntPtr.Zero) == SocketError.SocketError)
{
errorCode = (SocketError)Marshal.GetLastWin32Error();
}
}
finally {
asyncResult.SyncReleaseUnmanagedStructures();
}
//
// if the native call fails we'll throw a SocketException
//
if (errorCode!=SocketError.Success && errorCode != SocketError.MessageSize) {
//
// update our internal state after this socket error and throw
//
SocketException socketException = new SocketException(errorCode);
UpdateStatusAfterSocketError(socketException);
if(s_LoggingEnabled)Logging.Exception(Logging.Sockets, this, "ReceiveMessageFrom", socketException);
throw socketException;
}
if (!socketAddressOriginal.Equals(asyncResult.m_SocketAddress))
{
try {
remoteEP = endPointSnapshot.Create(asyncResult.m_SocketAddress);
}
catch {
}
if (m_RightEndPoint==null) {
//
// save a copy of the EndPoint so we can use it for Create()
//
m_RightEndPoint = endPointSnapshot;
}
}
socketFlags = asyncResult.m_flags;
ipPacketInformation = asyncResult.m_IPPacketInformation;
if(s_LoggingEnabled)Logging.Exit(Logging.Sockets, this, "ReceiveMessageFrom", errorCode);
return bytesTransfered;
}
public static SocketError ReceiveMessageFrom(Socket socket, SafeCloseSocket handle, byte[] buffer, int offset, int size, ref SocketFlags socketFlags, Internals.SocketAddress socketAddress, out Internals.SocketAddress receiveAddress, out IPPacketInformation ipPacketInformation, out int bytesTransferred)
{
ReceiveMessageOverlappedAsyncResult asyncResult = new ReceiveMessageOverlappedAsyncResult(socket, null, null);
asyncResult.SetUnmanagedStructures(buffer, offset, size, socketAddress, socketFlags);
SocketError errorCode = SocketError.Success;
bytesTransferred = 0;
try
{
// This can throw ObjectDisposedException (retrieving the delegate AND resolving the handle).
if (socket.WSARecvMsgBlocking(
handle.DangerousGetHandle(),
Marshal.UnsafeAddrOfPinnedArrayElement(asyncResult._messageBuffer, 0),
out bytesTransferred,
IntPtr.Zero,
IntPtr.Zero) == SocketError.SocketError)
{
errorCode = (SocketError)Marshal.GetLastWin32Error();
}
}
finally
{
asyncResult.SyncReleaseUnmanagedStructures();
}
socketFlags = asyncResult.SocketFlags;
receiveAddress = asyncResult.SocketAddress;
ipPacketInformation = asyncResult.IPPacketInformation;
return errorCode;
}
/// <summary>
/// Receives the specified number of bytes of data into the specified location of the data buffer, using the specified <see cref="T:System.Net.Sockets.SocketFlags"/>, and stores the endpoint and packet information.
/// </summary>
///
/// <returns>
/// The number of bytes received.
/// </returns>
/// <param name="buffer">An array of type <see cref="T:System.Byte"/> that is the storage location for received data.</param><param name="offset">The position in the <paramref name="buffer"/> parameter to store the received data.</param><param name="size">The number of bytes to receive.</param><param name="socketFlags">A bitwise combination of the <see cref="T:System.Net.Sockets.SocketFlags"/> values.</param><param name="remoteEP">An <see cref="T:System.Net.EndPoint"/>, passed by reference, that represents the remote server.</param><param name="ipPacketInformation">An <see cref="T:System.Net.Sockets.IPPacketInformation"/> holding address and interface information.</param><exception cref="T:System.ArgumentNullException"><paramref name="buffer"/> is null.- or- <paramref name="remoteEP"/> is null. </exception><exception cref="T:System.ArgumentOutOfRangeException"><paramref name="offset"/> is less than 0.-or- <paramref name="offset"/> is greater than the length of <paramref name="buffer"/>.-or- <paramref name="size"/> is less than 0.-or- <paramref name="size"/> is greater than the length of the <paramref name="buffer"/> minus the value of the offset parameter. </exception><exception cref="T:System.Net.Sockets.SocketException"><paramref name="socketFlags"/> is not a valid combination of values.-or- The <see cref="P:System.Net.Sockets.Socket.LocalEndPoint"/> property was not set.-or- The .NET Framework is running on an AMD 64-bit processor.-or- An error occurred when attempting to access the socket. See the Remarks section for more information. </exception><exception cref="T:System.ObjectDisposedException">The <see cref="T:System.Net.Sockets.Socket"/> has been closed. </exception><exception cref="T:System.NotSupportedException">The operating system is Windows 2000 or earlier, and this method requires Windows XP.</exception>
public int ReceiveMessageFrom(byte[] buffer, int offset, int size, ref SocketFlags socketFlags, ref EndPoint remoteEP, out IPPacketInformation ipPacketInformation)
{
if (Socket.s_LoggingEnabled)
Logging.Enter(Logging.Sockets, (object) this, "ReceiveMessageFrom", "");
if (this.CleanedUp)
throw new ObjectDisposedException(this.GetType().FullName);
if (buffer == null)
throw new ArgumentNullException("buffer");
if (remoteEP == null)
throw new ArgumentNullException("remoteEP");
if (!this.CanTryAddressFamily(remoteEP.AddressFamily))
{
throw new ArgumentException(SR.GetString("net_InvalidEndPointAddressFamily", (object) remoteEP.AddressFamily, (object) this.addressFamily), "remoteEP");
}
else
{
if (offset < 0 || offset > buffer.Length)
throw new ArgumentOutOfRangeException("offset");
if (size < 0 || size > buffer.Length - offset)
throw new ArgumentOutOfRangeException("size");
if (this.m_RightEndPoint == null)
throw new InvalidOperationException(SR.GetString("net_sockets_mustbind"));
this.ValidateBlockingMode();
EndPoint remoteEP1 = remoteEP;
SocketAddress socketAddress1 = this.SnapshotAndSerialize(ref remoteEP1);
ReceiveMessageOverlappedAsyncResult overlappedAsyncResult = new ReceiveMessageOverlappedAsyncResult(this, (object) null, (AsyncCallback) null);
overlappedAsyncResult.SetUnmanagedStructures(buffer, offset, size, socketAddress1, socketFlags);
SocketAddress socketAddress2 = remoteEP1.Serialize();
int bytesTransferred = 0;
SocketError socketError = SocketError.Success;
this.SetReceivingPacketInformation();
try
{
if (this.WSARecvMsg_Blocking(this.m_Handle.DangerousGetHandle(), Marshal.UnsafeAddrOfPinnedArrayElement((Array) overlappedAsyncResult.m_MessageBuffer, 0), out bytesTransferred, IntPtr.Zero, IntPtr.Zero) == SocketError.SocketError)
socketError = (SocketError) Marshal.GetLastWin32Error();
}
finally
{
overlappedAsyncResult.SyncReleaseUnmanagedStructures();
}
if (socketError != SocketError.Success && socketError != SocketError.MessageSize)
{
SocketException socketException = new SocketException(socketError);
this.UpdateStatusAfterSocketError(socketException);
if (Socket.s_LoggingEnabled)
Logging.Exception(Logging.Sockets, (object) this, "ReceiveMessageFrom", (Exception) socketException);
throw socketException;
}
else
{
if (!socketAddress2.Equals((object) overlappedAsyncResult.m_SocketAddress))
{
try
{
remoteEP = remoteEP1.Create(overlappedAsyncResult.m_SocketAddress);
}
catch
{
}
if (this.m_RightEndPoint == null)
this.m_RightEndPoint = remoteEP1;
}
socketFlags = overlappedAsyncResult.m_flags;
ipPacketInformation = overlappedAsyncResult.m_IPPacketInformation;
if (Socket.s_LoggingEnabled)
Logging.Exit(Logging.Sockets, (object) this, "ReceiveMessageFrom", (object) socketError);
return bytesTransferred;
}
}
}
/// <devdoc>
/// <para>Receives a datagram into a specific location in the data buffer and stores
/// the end point.</para>
/// </devdoc>
public int ReceiveMessageFrom(byte[] buffer, int offset, int size, ref SocketFlags socketFlags, ref EndPoint remoteEP, out IPPacketInformation ipPacketInformation)
{
if(Logging.On)Logging.Enter(Logging.Sockets, this, "ReceiveMessageFrom", "");
if (CleanedUp) {
throw new ObjectDisposedException(this.GetType().FullName);
}
if (buffer==null) {
throw new ArgumentNullException("buffer");
}
if (remoteEP==null) {
throw new ArgumentNullException("remoteEP");
}
if (offset<0 || offset>buffer.Length) {
throw new ArgumentOutOfRangeException("offset");
}
if (size<0 || size>buffer.Length-offset) {
throw new ArgumentOutOfRangeException("size");
}
if (m_RightEndPoint==null) {
throw new InvalidOperationException(SR.GetString(SR.net_sockets_mustbind));
}
ValidateBlockingMode();
// This will check the permissions for connect.
EndPoint endPointSnapshot = remoteEP;
SocketAddress socketAddress = CheckCacheRemote(ref endPointSnapshot, false);
ReceiveMessageOverlappedAsyncResult asyncResult = new ReceiveMessageOverlappedAsyncResult(this,null,null);
asyncResult.SetUnmanagedStructures(buffer, offset, size, socketAddress, socketFlags);
// save a copy of the original EndPoint
SocketAddress socketAddressOriginal = endPointSnapshot.Serialize();
//setup structure
int bytesTransfered = 0;
SocketError errorCode = SocketError.Success;
if(addressFamily == AddressFamily.InterNetwork) {
SetSocketOption(SocketOptionLevel.IP,SocketOptionName.PacketInformation,true);
}
else if (addressFamily == AddressFamily.InterNetworkV6){
SetSocketOption(SocketOptionLevel.IPv6,SocketOptionName.PacketInformation,true);
}
try
{
// This can throw ObjectDisposedException (retrieving the delegate AND resolving the handle).
if (WSARecvMsg_Blocking(
m_Handle.DangerousGetHandle(),
Marshal.UnsafeAddrOfPinnedArrayElement(asyncResult.m_MessageBuffer,0),
out bytesTransfered,
IntPtr.Zero,
IntPtr.Zero) == SocketError.SocketError)
{
errorCode = (SocketError)Marshal.GetLastWin32Error();
}
}
finally {
asyncResult.SyncReleaseUnmanagedStructures();
}
//
// if the native call fails we'll throw a SocketException
//
if (errorCode!=SocketError.Success && errorCode != SocketError.MessageSize) {
//
// update our internal state after this socket error and throw
//
SocketException socketException = new SocketException(errorCode);
UpdateStatusAfterSocketError(socketException);
if(Logging.On)Logging.Exception(Logging.Sockets, this, "ReceiveMessageFrom", socketException);
throw socketException;
}
if (!socketAddressOriginal.Equals(asyncResult.m_SocketAddress))
{
try {
remoteEP = endPointSnapshot.Create(asyncResult.m_SocketAddress);
}
catch {
}
if (m_RightEndPoint==null) {
//
// save a copy of the EndPoint so we can use it for Create()
//
m_RightEndPoint = endPointSnapshot;
}
}
socketFlags = asyncResult.m_flags;
ipPacketInformation = asyncResult.m_IPPacketInformation;
if(Logging.On)Logging.Exit(Logging.Sockets, this, "ReceiveMessageFrom", errorCode);
return bytesTransfered;
}
public int ReceiveMessageFrom(byte[] buffer, int offset, int size, ref SocketFlags socketFlags, ref EndPoint remoteEP, out IPPacketInformation ipPacketInformation)
{
if (s_LoggingEnabled)
{
Logging.Enter(Logging.Sockets, this, "ReceiveMessageFrom", "");
}
if (this.CleanedUp)
{
throw new ObjectDisposedException(base.GetType().FullName);
}
if (!ComNetOS.IsPostWin2K)
{
throw new PlatformNotSupportedException(SR.GetString("WinXPRequired"));
}
if (buffer == null)
{
throw new ArgumentNullException("buffer");
}
if (remoteEP == null)
{
throw new ArgumentNullException("remoteEP");
}
if (remoteEP.AddressFamily != this.addressFamily)
{
throw new ArgumentException(SR.GetString("net_InvalidEndPointAddressFamily", new object[] { remoteEP.AddressFamily, this.addressFamily }), "remoteEP");
}
if ((offset < 0) || (offset > buffer.Length))
{
throw new ArgumentOutOfRangeException("offset");
}
if ((size < 0) || (size > (buffer.Length - offset)))
{
throw new ArgumentOutOfRangeException("size");
}
if (this.m_RightEndPoint == null)
{
throw new InvalidOperationException(SR.GetString("net_sockets_mustbind"));
}
this.ValidateBlockingMode();
EndPoint point = remoteEP;
SocketAddress socketAddress = this.SnapshotAndSerialize(ref point);
ReceiveMessageOverlappedAsyncResult result = new ReceiveMessageOverlappedAsyncResult(this, null, null);
result.SetUnmanagedStructures(buffer, offset, size, socketAddress, socketFlags);
SocketAddress address2 = point.Serialize();
int bytesTransferred = 0;
SocketError success = SocketError.Success;
this.SetReceivingPacketInformation();
try
{
if (this.WSARecvMsg_Blocking(this.m_Handle.DangerousGetHandle(), Marshal.UnsafeAddrOfPinnedArrayElement(result.m_MessageBuffer, 0), out bytesTransferred, IntPtr.Zero, IntPtr.Zero) == SocketError.SocketError)
{
success = (SocketError) Marshal.GetLastWin32Error();
}
}
finally
{
result.SyncReleaseUnmanagedStructures();
}
switch (success)
{
case SocketError.Success:
case SocketError.MessageSize:
if (!address2.Equals(result.m_SocketAddress))
{
try
{
remoteEP = point.Create(result.m_SocketAddress);
}
catch
{
}
if (this.m_RightEndPoint == null)
{
this.m_RightEndPoint = point;
}
}
socketFlags = result.m_flags;
ipPacketInformation = result.m_IPPacketInformation;
if (s_LoggingEnabled)
{
Logging.Exit(Logging.Sockets, this, "ReceiveMessageFrom", success);
}
return bytesTransferred;
}
SocketException socketException = new SocketException(success);
this.UpdateStatusAfterSocketError(socketException);
if (s_LoggingEnabled)
{
Logging.Exception(Logging.Sockets, this, "ReceiveMessageFrom", socketException);
}
throw socketException;
}
