450 lines
16 KiB
C#
450 lines
16 KiB
C#
using System;
|
|
using System.Collections.Generic;
|
|
using System.IO;
|
|
using System.Net;
|
|
using System.Net.Sockets;
|
|
using System.Runtime.ExceptionServices;
|
|
using System.Text;
|
|
using System.Threading;
|
|
using System.Threading.Tasks;
|
|
using MediaBrowser.Model.IO;
|
|
using MediaBrowser.Model.Logging;
|
|
using MediaBrowser.Model.Net;
|
|
using MediaBrowser.Model.System;
|
|
|
|
namespace SocketHttpListener.Net
|
|
{
|
|
// Licensed to the .NET Foundation under one or more agreements.
|
|
// See the LICENSE file in the project root for more information.
|
|
//
|
|
// System.Net.ResponseStream
|
|
//
|
|
// Author:
|
|
// Gonzalo Paniagua Javier (gonzalo@novell.com)
|
|
//
|
|
// Copyright (c) 2005 Novell, Inc. (http://www.novell.com)
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person obtaining
|
|
// a copy of this software and associated documentation files (the
|
|
// "Software"), to deal in the Software without restriction, including
|
|
// without limitation the rights to use, copy, modify, merge, publish,
|
|
// distribute, sublicense, and/or sell copies of the Software, and to
|
|
// permit persons to whom the Software is furnished to do so, subject to
|
|
// the following conditions:
|
|
//
|
|
// The above copyright notice and this permission notice shall be
|
|
// included in all copies or substantial portions of the Software.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
|
|
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
|
|
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
|
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
//
|
|
|
|
internal partial class HttpResponseStream : Stream
|
|
{
|
|
private HttpListenerResponse _response;
|
|
private bool _ignore_errors;
|
|
private bool _trailer_sent;
|
|
private Stream _stream;
|
|
private readonly IMemoryStreamFactory _memoryStreamFactory;
|
|
private readonly IAcceptSocket _socket;
|
|
private readonly bool _supportsDirectSocketAccess;
|
|
private readonly IEnvironmentInfo _environment;
|
|
private readonly IFileSystem _fileSystem;
|
|
private readonly ILogger _logger;
|
|
|
|
internal HttpResponseStream(Stream stream, HttpListenerResponse response, bool ignore_errors, IMemoryStreamFactory memoryStreamFactory, IAcceptSocket socket, bool supportsDirectSocketAccess, IEnvironmentInfo environment, IFileSystem fileSystem, ILogger logger)
|
|
{
|
|
_response = response;
|
|
_ignore_errors = ignore_errors;
|
|
_memoryStreamFactory = memoryStreamFactory;
|
|
_socket = socket;
|
|
_supportsDirectSocketAccess = supportsDirectSocketAccess;
|
|
_environment = environment;
|
|
_fileSystem = fileSystem;
|
|
_logger = logger;
|
|
_stream = stream;
|
|
}
|
|
|
|
private void DisposeCore()
|
|
{
|
|
byte[] bytes = null;
|
|
MemoryStream ms = GetHeaders(true);
|
|
bool chunked = _response.SendChunked;
|
|
if (_stream.CanWrite)
|
|
{
|
|
try
|
|
{
|
|
if (ms != null)
|
|
{
|
|
long start = ms.Position;
|
|
if (chunked && !_trailer_sent)
|
|
{
|
|
bytes = GetChunkSizeBytes(0, true);
|
|
ms.Position = ms.Length;
|
|
ms.Write(bytes, 0, bytes.Length);
|
|
}
|
|
InternalWrite(ms.GetBuffer(), (int)start, (int)(ms.Length - start));
|
|
_trailer_sent = true;
|
|
}
|
|
else if (chunked && !_trailer_sent)
|
|
{
|
|
bytes = GetChunkSizeBytes(0, true);
|
|
InternalWrite(bytes, 0, bytes.Length);
|
|
_trailer_sent = true;
|
|
}
|
|
}
|
|
catch (HttpListenerException)
|
|
{
|
|
// Ignore error due to connection reset by peer
|
|
}
|
|
}
|
|
_response.Close();
|
|
}
|
|
|
|
internal async Task WriteWebSocketHandshakeHeadersAsync()
|
|
{
|
|
if (_closed)
|
|
throw new ObjectDisposedException(GetType().ToString());
|
|
|
|
if (_stream.CanWrite)
|
|
{
|
|
MemoryStream ms = GetHeaders(closing: false, isWebSocketHandshake: true);
|
|
bool chunked = _response.SendChunked;
|
|
|
|
long start = ms.Position;
|
|
if (chunked)
|
|
{
|
|
byte[] bytes = GetChunkSizeBytes(0, true);
|
|
ms.Position = ms.Length;
|
|
ms.Write(bytes, 0, bytes.Length);
|
|
}
|
|
|
|
await InternalWriteAsync(ms.GetBuffer(), (int)start, (int)(ms.Length - start)).ConfigureAwait(false);
|
|
await _stream.FlushAsync().ConfigureAwait(false);
|
|
}
|
|
}
|
|
|
|
private MemoryStream GetHeaders(bool closing, bool isWebSocketHandshake = false)
|
|
{
|
|
//// SendHeaders works on shared headers
|
|
//lock (_response.headers_lock)
|
|
//{
|
|
// if (_response.HeadersSent)
|
|
// return null;
|
|
// var ms = _memoryStreamFactory.CreateNew();
|
|
// _response.SendHeaders(closing, ms);
|
|
// return ms;
|
|
//}
|
|
|
|
// SendHeaders works on shared headers
|
|
lock (_response._headersLock)
|
|
{
|
|
if (_response.SentHeaders)
|
|
{
|
|
return null;
|
|
}
|
|
|
|
MemoryStream ms = new MemoryStream();
|
|
_response.SendHeaders(closing, ms, isWebSocketHandshake);
|
|
return ms;
|
|
}
|
|
}
|
|
|
|
private static byte[] s_crlf = new byte[] { 13, 10 };
|
|
private static byte[] GetChunkSizeBytes(int size, bool final)
|
|
{
|
|
string str = String.Format("{0:x}\r\n{1}", size, final ? "\r\n" : "");
|
|
return Encoding.ASCII.GetBytes(str);
|
|
}
|
|
|
|
internal void InternalWrite(byte[] buffer, int offset, int count)
|
|
{
|
|
if (_ignore_errors)
|
|
{
|
|
try
|
|
{
|
|
_stream.Write(buffer, offset, count);
|
|
}
|
|
catch { }
|
|
}
|
|
else
|
|
{
|
|
_stream.Write(buffer, offset, count);
|
|
}
|
|
}
|
|
|
|
internal Task InternalWriteAsync(byte[] buffer, int offset, int count) =>
|
|
_ignore_errors ? InternalWriteIgnoreErrorsAsync(buffer, offset, count) : _stream.WriteAsync(buffer, offset, count);
|
|
|
|
private async Task InternalWriteIgnoreErrorsAsync(byte[] buffer, int offset, int count)
|
|
{
|
|
try { await _stream.WriteAsync(buffer, offset, count).ConfigureAwait(false); }
|
|
catch { }
|
|
}
|
|
|
|
private void WriteCore(byte[] buffer, int offset, int size)
|
|
{
|
|
if (size == 0)
|
|
return;
|
|
|
|
byte[] bytes = null;
|
|
MemoryStream ms = GetHeaders(false);
|
|
bool chunked = _response.SendChunked;
|
|
if (ms != null)
|
|
{
|
|
long start = ms.Position; // After the possible preamble for the encoding
|
|
ms.Position = ms.Length;
|
|
if (chunked)
|
|
{
|
|
bytes = GetChunkSizeBytes(size, false);
|
|
ms.Write(bytes, 0, bytes.Length);
|
|
}
|
|
|
|
int new_count = Math.Min(size, 16384 - (int)ms.Position + (int)start);
|
|
ms.Write(buffer, offset, new_count);
|
|
size -= new_count;
|
|
offset += new_count;
|
|
InternalWrite(ms.GetBuffer(), (int)start, (int)(ms.Length - start));
|
|
ms.SetLength(0);
|
|
ms.Capacity = 0; // 'dispose' the buffer in ms.
|
|
}
|
|
else if (chunked)
|
|
{
|
|
bytes = GetChunkSizeBytes(size, false);
|
|
InternalWrite(bytes, 0, bytes.Length);
|
|
}
|
|
|
|
if (size > 0)
|
|
InternalWrite(buffer, offset, size);
|
|
if (chunked)
|
|
InternalWrite(s_crlf, 0, 2);
|
|
}
|
|
|
|
private IAsyncResult BeginWriteCore(byte[] buffer, int offset, int size, AsyncCallback cback, object state)
|
|
{
|
|
if (_closed)
|
|
{
|
|
HttpStreamAsyncResult ares = new HttpStreamAsyncResult(this);
|
|
ares._callback = cback;
|
|
ares._state = state;
|
|
ares.Complete();
|
|
return ares;
|
|
}
|
|
|
|
byte[] bytes = null;
|
|
MemoryStream ms = GetHeaders(false);
|
|
bool chunked = _response.SendChunked;
|
|
if (ms != null)
|
|
{
|
|
long start = ms.Position;
|
|
ms.Position = ms.Length;
|
|
if (chunked)
|
|
{
|
|
bytes = GetChunkSizeBytes(size, false);
|
|
ms.Write(bytes, 0, bytes.Length);
|
|
}
|
|
ms.Write(buffer, offset, size);
|
|
buffer = ms.GetBuffer();
|
|
offset = (int)start;
|
|
size = (int)(ms.Position - start);
|
|
}
|
|
else if (chunked)
|
|
{
|
|
bytes = GetChunkSizeBytes(size, false);
|
|
InternalWrite(bytes, 0, bytes.Length);
|
|
}
|
|
|
|
return _stream.BeginWrite(buffer, offset, size, cback, state);
|
|
}
|
|
|
|
private void EndWriteCore(IAsyncResult asyncResult)
|
|
{
|
|
if (_closed)
|
|
return;
|
|
|
|
if (_ignore_errors)
|
|
{
|
|
try
|
|
{
|
|
_stream.EndWrite(asyncResult);
|
|
if (_response.SendChunked)
|
|
_stream.Write(s_crlf, 0, 2);
|
|
}
|
|
catch { }
|
|
}
|
|
else
|
|
{
|
|
_stream.EndWrite(asyncResult);
|
|
if (_response.SendChunked)
|
|
_stream.Write(s_crlf, 0, 2);
|
|
}
|
|
}
|
|
|
|
private bool EnableSendFileWithSocket = false;
|
|
|
|
public Task TransmitFile(string path, long offset, long count, FileShareMode fileShareMode, CancellationToken cancellationToken)
|
|
{
|
|
if (_supportsDirectSocketAccess && offset == 0 && count == 0 && !_response.SendChunked && _response.ContentLength64 > 8192)
|
|
{
|
|
if (EnableSendFileWithSocket)
|
|
{
|
|
return TransmitFileOverSocket(path, offset, count, fileShareMode, cancellationToken);
|
|
}
|
|
}
|
|
return TransmitFileManaged(path, offset, count, fileShareMode, cancellationToken);
|
|
}
|
|
|
|
private readonly byte[] _emptyBuffer = new byte[] { };
|
|
private Task TransmitFileOverSocket(string path, long offset, long count, FileShareMode fileShareMode, CancellationToken cancellationToken)
|
|
{
|
|
var ms = GetHeaders(false);
|
|
|
|
byte[] preBuffer;
|
|
if (ms != null)
|
|
{
|
|
using (var msCopy = new MemoryStream())
|
|
{
|
|
ms.CopyTo(msCopy);
|
|
preBuffer = msCopy.ToArray();
|
|
}
|
|
}
|
|
else
|
|
{
|
|
return TransmitFileManaged(path, offset, count, fileShareMode, cancellationToken);
|
|
}
|
|
|
|
//_logger.Info("Socket sending file {0} {1}", path, response.ContentLength64);
|
|
|
|
var taskCompletion = new TaskCompletionSource<bool>();
|
|
|
|
Action<IAsyncResult> callback = callbackResult =>
|
|
{
|
|
try
|
|
{
|
|
_socket.EndSendFile(callbackResult);
|
|
taskCompletion.TrySetResult(true);
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
taskCompletion.TrySetException(ex);
|
|
}
|
|
};
|
|
|
|
var result = _socket.BeginSendFile(path, preBuffer, _emptyBuffer, new AsyncCallback(callback), null);
|
|
|
|
if (result.CompletedSynchronously)
|
|
{
|
|
callback(result);
|
|
}
|
|
|
|
cancellationToken.Register(() => taskCompletion.TrySetCanceled());
|
|
|
|
return taskCompletion.Task;
|
|
}
|
|
|
|
const int StreamCopyToBufferSize = 81920;
|
|
private async Task TransmitFileManaged(string path, long offset, long count, FileShareMode fileShareMode, CancellationToken cancellationToken)
|
|
{
|
|
var allowAsync = _environment.OperatingSystem != MediaBrowser.Model.System.OperatingSystem.Windows;
|
|
|
|
//if (count <= 0)
|
|
//{
|
|
// allowAsync = true;
|
|
//}
|
|
|
|
var fileOpenOptions = FileOpenOptions.SequentialScan;
|
|
|
|
if (allowAsync)
|
|
{
|
|
fileOpenOptions |= FileOpenOptions.Asynchronous;
|
|
}
|
|
|
|
// use non-async filestream along with read due to https://github.com/dotnet/corefx/issues/6039
|
|
|
|
using (var fs = _fileSystem.GetFileStream(path, FileOpenMode.Open, FileAccessMode.Read, fileShareMode, fileOpenOptions))
|
|
{
|
|
if (offset > 0)
|
|
{
|
|
fs.Position = offset;
|
|
}
|
|
|
|
var targetStream = this;
|
|
|
|
if (count > 0)
|
|
{
|
|
if (allowAsync)
|
|
{
|
|
await CopyToInternalAsync(fs, targetStream, count, cancellationToken).ConfigureAwait(false);
|
|
}
|
|
else
|
|
{
|
|
await CopyToInternalAsyncWithSyncRead(fs, targetStream, count, cancellationToken).ConfigureAwait(false);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (allowAsync)
|
|
{
|
|
await fs.CopyToAsync(targetStream, StreamCopyToBufferSize, cancellationToken).ConfigureAwait(false);
|
|
}
|
|
else
|
|
{
|
|
fs.CopyTo(targetStream, StreamCopyToBufferSize);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
private static async Task CopyToInternalAsyncWithSyncRead(Stream source, Stream destination, long copyLength, CancellationToken cancellationToken)
|
|
{
|
|
var array = new byte[StreamCopyToBufferSize];
|
|
int bytesRead;
|
|
|
|
while ((bytesRead = source.Read(array, 0, array.Length)) != 0)
|
|
{
|
|
var bytesToWrite = Math.Min(bytesRead, copyLength);
|
|
|
|
if (bytesToWrite > 0)
|
|
{
|
|
await destination.WriteAsync(array, 0, Convert.ToInt32(bytesToWrite), cancellationToken).ConfigureAwait(false);
|
|
}
|
|
|
|
copyLength -= bytesToWrite;
|
|
|
|
if (copyLength <= 0)
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
private static async Task CopyToInternalAsync(Stream source, Stream destination, long copyLength, CancellationToken cancellationToken)
|
|
{
|
|
var array = new byte[StreamCopyToBufferSize];
|
|
int bytesRead;
|
|
|
|
while ((bytesRead = await source.ReadAsync(array, 0, array.Length, cancellationToken).ConfigureAwait(false)) != 0)
|
|
{
|
|
var bytesToWrite = Math.Min(bytesRead, copyLength);
|
|
|
|
if (bytesToWrite > 0)
|
|
{
|
|
await destination.WriteAsync(array, 0, Convert.ToInt32(bytesToWrite), cancellationToken).ConfigureAwait(false);
|
|
}
|
|
|
|
copyLength -= bytesToWrite;
|
|
|
|
if (copyLength <= 0)
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|