Mercurial > hg > ucis.core

annotate Util/QueuedPacketStream.cs @ 1:28dc7d535036

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Small improvements, introduced PacketStream
author Ivo Smits <Ivo@UCIS.nl>
date Mon, 07 Jan 2013 16:43:28 +0100
parents
children 4b78cc5f116b
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
1 ???using System;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
2 using System.Collections.Generic;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
3 using System.IO;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
4 using System.Threading;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
5 using SysThreadPool = System.Threading.ThreadPool;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
6
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
7 namespace UCIS.Util {
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
8 public abstract class QueuedPacketStream : PacketStream {
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
9 Queue<Byte[]> ReceiveQueue = new Queue<byte[]>();
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
10 Byte[] ReceiveBuffer = null;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
11 int ReceiveBufferOffset = 0;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
12 int ReceiveWaiting = 0;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
13 AutoResetEvent ReceiveEvent = new AutoResetEvent(false);
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
14 AsyncResult AsyncReceiveOperation = null;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
15 protected Boolean Closed { get; private set; }
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
16
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
17 public QueuedPacketStream() {
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
18 ReadTimeout = Timeout.Infinite;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
19 Closed = false;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
20 }
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
21
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
22 protected void AddReadBufferCopy(Byte[] buffer, int offset, int count) {
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
23 Byte[] store;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
24 store = new Byte[count];
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
25 Buffer.BlockCopy(buffer, offset, store, 0, count);
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
26 AddReadBufferNoCopy(store);
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
27 }
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
28 protected void AddReadBufferNoCopy(Byte[] store) {
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
29 if (Closed) return;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
30 lock (ReceiveQueue) {
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
31 ReceiveQueue.Enqueue(store);
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
32 Interlocked.Add(ref ReceiveWaiting, store.Length);
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
33 ReceiveEvent.Set();
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
34 if (AsyncReceiveOperation != null && (store.Length > 0 || AsyncReceiveOperation.IsReadPacket)) {
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
35 AsyncReceiveOperation.SetCompleted(false);
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
36 AsyncReceiveOperation = null;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
37 }
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
38 }
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
39 }
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
40 public override void Close() {
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
41 Closed = true;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
42 base.Close();
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
43 ReceiveEvent.Set();
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
44 lock (ReceiveQueue) {
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
45 if (AsyncReceiveOperation != null) {
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
46 AsyncReceiveOperation.SetCompleted(false);
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
47 AsyncReceiveOperation = null;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
48 }
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
49 }
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
50 }
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
51
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
52 public override bool CanSeek { get { return false; } }
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
53 public override bool CanTimeout { get { return true; } }
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
54 public override bool CanRead { get { return !Closed; } }
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
55 public override long Position { get { throw new NotSupportedException(); } set { throw new NotSupportedException(); } }
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
56 public override long Seek(long offset, SeekOrigin origin) { throw new NotSupportedException(); }
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
57 public override void SetLength(long value) { throw new NotSupportedException(); }
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
58
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
59 public override int ReadTimeout { get; set; }
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
60 public override long Length { get { return ReceiveWaiting; } }
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
61
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
62 public int WaitForPacket() {
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
63 while (ReceiveBuffer == null) {
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
64 lock (ReceiveQueue) {
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
65 if (ReceiveQueue.Count > 0) {
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
66 ReceiveBuffer = ReceiveQueue.Dequeue();
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
67 ReceiveBufferOffset = 0;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
68 continue;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
69 }
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
70 }
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
71 if (Closed) throw new ObjectDisposedException("QueuedPacketStream", "The connection has been closed");
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
72 if (ReadTimeout == 0 || !ReceiveEvent.WaitOne(ReadTimeout, false)) throw new TimeoutException();
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
73 }
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
74 return ReceiveBuffer.Length - ReceiveBufferOffset;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
75 }
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
76 public override int Read(byte[] buffer, int offset, int count) {
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
77 int left = 0;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
78 while (true) {
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
79 left = WaitForPacket();
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
80 if (left > 0) break;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
81 ReceiveBuffer = null;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
82 }
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
83 if (count > left) count = left;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
84 Buffer.BlockCopy(ReceiveBuffer, ReceiveBufferOffset, buffer, offset, count);
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
85 ReceiveBufferOffset += count;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
86 if (ReceiveBufferOffset == ReceiveBuffer.Length) ReceiveBuffer = null;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
87 Interlocked.Add(ref ReceiveWaiting, -count);
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
88 return count;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
89 }
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
90 public override Byte[] ReadPacket() {
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
91 WaitForPacket();
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
92 Byte[] arr = ReceiveBuffer;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
93 if (ReceiveBufferOffset > 0) {
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
94 arr = new Byte[ReceiveBuffer.Length - ReceiveBufferOffset];
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
95 Buffer.BlockCopy(ReceiveBuffer, ReceiveBufferOffset, arr, 0, arr.Length - ReceiveBufferOffset);
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
96 }
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
97 ReceiveBuffer = null;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
98 return arr;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
99 }
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
100 public override ArraySegment<byte> ReadPacketFast() {
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
101 WaitForPacket();
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
102 ArraySegment<byte> ret = new ArraySegment<byte>(ReceiveBuffer, ReceiveBufferOffset, ReceiveBuffer.Length - ReceiveBufferOffset);
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
103 ReceiveBuffer = null;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
104 return ret;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
105 }
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
106
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
107 class AsyncResult : IAsyncResult {
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
108 public Object AsyncState { get; private set; }
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
109 public WaitHandle AsyncWaitHandle { get { return WaitHandle; } }
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
110 public Boolean CompletedSynchronously { get; private set; }
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
111 public Boolean IsCompleted { get; private set; }
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
112 public Boolean IsReadPacket { get; private set; }
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
113
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
114 public Byte[] Buffer = null;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
115 public int BufferOffset = 0;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
116 public int BufferLength = 0;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
117
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
118 private ManualResetEvent WaitHandle = new ManualResetEvent(false);
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
119 private AsyncCallback Callback = null;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
120 private void CallCallback(Object state) {
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
121 if (Callback != null) Callback(this);
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
122 }
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
123 public void SetCompleted(Boolean synchronously) {
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
124 CompletedSynchronously = synchronously;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
125 IsCompleted = true;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
126 WaitHandle.Set();
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
127 if (Callback != null) SysThreadPool.QueueUserWorkItem(CallCallback);
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
128 }
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
129 public AsyncResult(AsyncCallback callback, Object state) {
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
130 this.Callback = callback;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
131 this.AsyncState = state;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
132 CompletedSynchronously = false;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
133 IsCompleted = false;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
134 IsReadPacket = true;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
135 }
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
136 public AsyncResult(AsyncCallback callback, Object state, Byte[] buffer, int bufferOffset, int bufferLength)
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
137 : this(callback, state) {
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
138 this.Buffer = buffer;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
139 this.BufferOffset = bufferOffset;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
140 this.BufferLength = bufferLength;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
141 IsReadPacket = false;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
142 }
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
143 }
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
144 private IAsyncResult BeginAsyncReadOperation(AsyncResult ar) {
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
145 lock (ReceiveQueue) {
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
146 if (AsyncReceiveOperation != null) throw new InvalidOperationException("Another asynchronous operation is in progress");
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
147 if (ReceiveBuffer != null || ReceiveQueue.Count > 0) {
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
148 ar.SetCompleted(true);
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
149 } else {
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
150 if (Closed) throw new ObjectDisposedException("QueuedPacketStream", "The connection has been closed");
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
151 AsyncReceiveOperation = ar;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
152 }
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
153 }
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
154 return ar;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
155 }
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
156 private void EndAsyncReadOperation(AsyncResult ar) {
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
157 lock (ReceiveQueue) {
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
158 if (AsyncReceiveOperation != null && ar != AsyncReceiveOperation) throw new InvalidOperationException("The given AsyncResult object does not match the current pending operation");
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
159 AsyncReceiveOperation = null;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
160 }
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
161 }
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
162 public override IAsyncResult BeginRead(byte[] buffer, int offset, int count, AsyncCallback callback, object state) {
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
163 return BeginAsyncReadOperation(new AsyncResult(callback, state, buffer, offset, count));
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
164 }
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
165 public override IAsyncResult BeginReadPacket(AsyncCallback callback, object state) {
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
166 return BeginAsyncReadOperation(new AsyncResult(callback, state));
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
167 }
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
168 public override IAsyncResult BeginReadPacketFast(AsyncCallback callback, object state) {
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
169 return BeginAsyncReadOperation(new AsyncResult(callback, state));
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
170 }
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
171 public override int EndRead(IAsyncResult asyncResult) {
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
172 AsyncResult ar = (AsyncResult)asyncResult;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
173 EndAsyncReadOperation(ar);
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
174 return Read(ar.Buffer, ar.BufferOffset, ar.BufferLength);
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
175 }
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
176 public override Byte[] EndReadPacket(IAsyncResult asyncResult) {
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
177 AsyncResult ar = (AsyncResult)asyncResult;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
178 EndAsyncReadOperation(ar);
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
179 return ReadPacket();
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
180 }
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
181 public override ArraySegment<Byte> EndReadPacketFast(IAsyncResult asyncResult) {
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
182 AsyncResult ar = (AsyncResult)asyncResult;
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
183 EndAsyncReadOperation(ar);
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
184 return ReadPacketFast();
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
185 }
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
186 }
28dc7d535036 Small improvements, introduced PacketStream
Ivo Smits <Ivo@UCIS.nl>
parents:
diff changeset
187 }