private SyncReleaseUnmanagedStructures ( ) : void | ||
return | void |
/// <summary> /// Sends the file <paramref name="fileName"/> and buffers of data to a connected <see cref="T:System.Net.Sockets.Socket"/> object using the specified <see cref="T:System.Net.Sockets.TransmitFileOptions"/> value. /// </summary> /// <param name="fileName">A <see cref="T:System.String"/> that contains the path and name of the file to be sent. This parameter can be null. </param><param name="preBuffer">A <see cref="T:System.Byte"/> array that contains data to be sent before the file is sent. This parameter can be null. </param><param name="postBuffer">A <see cref="T:System.Byte"/> array that contains data to be sent after the file is sent. This parameter can be null. </param><param name="flags">One or more of <see cref="T:System.Net.Sockets.TransmitFileOptions"/> values. </param><exception cref="T:System.NotSupportedException">The operating system is not Windows NT or later.- or - The socket is not connected to a remote host. </exception><exception cref="T:System.ObjectDisposedException">The <see cref="T:System.Net.Sockets.Socket"/> object has been closed. </exception><exception cref="T:System.InvalidOperationException">The <see cref="T:System.Net.Sockets.Socket"/> object is not in blocking mode and cannot accept this synchronous call. </exception><exception cref="T:System.IO.FileNotFoundException">The file <paramref name="fileName"/> was not found. </exception><exception cref="T:System.Net.Sockets.SocketException">An error occurred when attempting to access the socket. See the Remarks section for more information. </exception> public void SendFile(string fileName, byte[] preBuffer, byte[] postBuffer, TransmitFileOptions flags) { if (Socket.s_LoggingEnabled) Logging.Enter(Logging.Sockets, (object) this, "SendFile", ""); if (this.CleanedUp) throw new ObjectDisposedException(this.GetType().FullName); if (!this.Connected) throw new NotSupportedException(SR.GetString("net_notconnected")); this.ValidateBlockingMode(); TransmitFileOverlappedAsyncResult overlappedAsyncResult = new TransmitFileOverlappedAsyncResult(this); FileStream fileStream = (FileStream) null; if (fileName != null && fileName.Length > 0) fileStream = new FileStream(fileName, FileMode.Open, FileAccess.Read, FileShare.Read); SafeHandle fileHandle = (SafeHandle) null; if (fileStream != null) { ExceptionHelper.UnmanagedPermission.Assert(); try { fileHandle = (SafeHandle) fileStream.SafeFileHandle; } finally { CodeAccessPermission.RevertAssert(); } } SocketError socketError = SocketError.Success; try { overlappedAsyncResult.SetUnmanagedStructures(preBuffer, postBuffer, fileStream, TransmitFileOptions.UseDefaultWorkerThread, true); if ((fileHandle != null ? (!UnsafeNclNativeMethods.OSSOCK.TransmitFile_Blocking(this.m_Handle.DangerousGetHandle(), fileHandle, 0, 0, (SafeHandle) SafeNativeOverlapped.Zero, overlappedAsyncResult.TransmitFileBuffers, flags) ? 1 : 0) : (!UnsafeNclNativeMethods.OSSOCK.TransmitFile_Blocking2(this.m_Handle.DangerousGetHandle(), IntPtr.Zero, 0, 0, (SafeHandle) SafeNativeOverlapped.Zero, overlappedAsyncResult.TransmitFileBuffers, flags) ? 1 : 0)) != 0) socketError = (SocketError) Marshal.GetLastWin32Error(); } finally { overlappedAsyncResult.SyncReleaseUnmanagedStructures(); } if (socketError != SocketError.Success) { SocketException socketException = new SocketException(socketError); this.UpdateStatusAfterSocketError(socketException); if (Socket.s_LoggingEnabled) Logging.Exception(Logging.Sockets, (object) this, "SendFile", (Exception) socketException); throw socketException; } else { if ((overlappedAsyncResult.Flags & (TransmitFileOptions.Disconnect | TransmitFileOptions.ReuseSocket)) != TransmitFileOptions.UseDefaultWorkerThread) { this.SetToDisconnected(); this.m_RemoteEndPoint = (EndPoint) null; } if (!Socket.s_LoggingEnabled) return; Logging.Exit(Logging.Sockets, (object) this, "SendFile", (object) socketError); } }
public void SendFile(string fileName, byte[] preBuffer, byte[] postBuffer, TransmitFileOptions flags) { if(s_LoggingEnabled)Logging.Enter(Logging.Sockets, this, "SendFile", ""); if (CleanedUp) { throw new ObjectDisposedException(this.GetType().FullName); } if (!Connected) { throw new NotSupportedException(SR.GetString(SR.net_notconnected)); } ValidateBlockingMode(); GlobalLog.Print("Socket#" + ValidationHelper.HashString(this) + "::SendFile() SRC:" + ValidationHelper.ToString(LocalEndPoint) + " DST:" + ValidationHelper.ToString(RemoteEndPoint) + " fileName:" + fileName); TransmitFileOverlappedAsyncResult asyncResult = new TransmitFileOverlappedAsyncResult(this); FileStream fileStream = null; if (fileName != null && fileName.Length>0) { fileStream = new FileStream(fileName,FileMode.Open,FileAccess.Read,FileShare.Read); } SafeHandle fileHandle = null; if (fileStream != null) { ExceptionHelper.UnmanagedPermission.Assert(); try { fileHandle = fileStream.SafeFileHandle; } finally { SecurityPermission.RevertAssert(); } } SocketError errorCode = SocketError.Success; try { asyncResult.SetUnmanagedStructures(preBuffer, postBuffer, fileStream, 0, true); // This can throw ObjectDisposedException. if (fileHandle != null ? !UnsafeNclNativeMethods.OSSOCK.TransmitFile_Blocking(m_Handle.DangerousGetHandle(), fileHandle, 0, 0, SafeNativeOverlapped.Zero, asyncResult.TransmitFileBuffers, flags) : !UnsafeNclNativeMethods.OSSOCK.TransmitFile_Blocking2(m_Handle.DangerousGetHandle(), IntPtr.Zero, 0, 0, SafeNativeOverlapped.Zero, asyncResult.TransmitFileBuffers, flags)) { errorCode = (SocketError) Marshal.GetLastWin32Error(); } } finally { asyncResult.SyncReleaseUnmanagedStructures(); } #if TRAVE try { GlobalLog.Print("Socket#" + ValidationHelper.HashString(this) + "::SendFile() SRC:" + ValidationHelper.ToString(LocalEndPoint) + " DST:" + ValidationHelper.ToString(RemoteEndPoint) + " UnsafeNclNativeMethods.OSSOCK.TransmitFile returns errorCode:" + errorCode); } catch (ObjectDisposedException) { } #endif // // if the native call fails we'll throw a SocketException // if (errorCode!=SocketError.Success) { // // 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, "SendFile", socketException); throw socketException; } if ((asyncResult.Flags & (TransmitFileOptions.Disconnect | TransmitFileOptions.ReuseSocket) )!=0) { SetToDisconnected(); m_RemoteEndPoint = null; } if(s_LoggingEnabled)Logging.Exit(Logging.Sockets, this, "SendFile", errorCode); return; }
public void SendFile(string fileName, byte[] preBuffer, byte[] postBuffer, TransmitFileOptions flags) { if (s_LoggingEnabled) { Logging.Enter(Logging.Sockets, this, "SendFile", ""); } if (this.CleanedUp) { throw new ObjectDisposedException(base.GetType().FullName); } if (!ComNetOS.IsWinNt) { throw new PlatformNotSupportedException(SR.GetString("WinNTRequired")); } if (!this.Connected) { throw new NotSupportedException(SR.GetString("net_notconnected")); } this.ValidateBlockingMode(); TransmitFileOverlappedAsyncResult result = new TransmitFileOverlappedAsyncResult(this); FileStream fileStream = null; if ((fileName != null) && (fileName.Length > 0)) { fileStream = new FileStream(fileName, FileMode.Open, FileAccess.Read, FileShare.Read); } System.Runtime.InteropServices.SafeHandle fileHandle = null; if (fileStream != null) { ExceptionHelper.UnmanagedPermission.Assert(); try { fileHandle = fileStream.SafeFileHandle; } finally { CodeAccessPermission.RevertAssert(); } } SocketError success = SocketError.Success; try { result.SetUnmanagedStructures(preBuffer, postBuffer, fileStream, TransmitFileOptions.UseDefaultWorkerThread, true); if ((fileHandle != null) ? !UnsafeNclNativeMethods.OSSOCK.TransmitFile_Blocking(this.m_Handle.DangerousGetHandle(), fileHandle, 0, 0, SafeNativeOverlapped.Zero, result.TransmitFileBuffers, flags) : !UnsafeNclNativeMethods.OSSOCK.TransmitFile_Blocking2(this.m_Handle.DangerousGetHandle(), IntPtr.Zero, 0, 0, SafeNativeOverlapped.Zero, result.TransmitFileBuffers, flags)) { success = (SocketError) Marshal.GetLastWin32Error(); } } finally { result.SyncReleaseUnmanagedStructures(); } if (success != SocketError.Success) { SocketException socketException = new SocketException(success); this.UpdateStatusAfterSocketError(socketException); if (s_LoggingEnabled) { Logging.Exception(Logging.Sockets, this, "SendFile", socketException); } throw socketException; } if ((result.Flags & (TransmitFileOptions.ReuseSocket | TransmitFileOptions.Disconnect)) != TransmitFileOptions.UseDefaultWorkerThread) { this.SetToDisconnected(); this.m_RemoteEndPoint = null; } if (s_LoggingEnabled) { Logging.Exit(Logging.Sockets, this, "SendFile", success); } }