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; }