corrade-vassal – Blame information for rev 1
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Rev | Author | Line No. | Line |
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1 | vero | 1 | using System; |
2 | using System.Collections.Generic; |
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3 | using System.Net; |
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4 | |||
5 | namespace OpenMetaverse |
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6 | { |
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7 | // this class encapsulates a single packet that |
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8 | // is either sent or received by a UDP socket |
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9 | public class UDPPacketBuffer |
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10 | { |
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11 | /// <summary>Size of the byte array used to store raw packet data</summary> |
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12 | public const int BUFFER_SIZE = 4096; |
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13 | /// <summary>Raw packet data buffer</summary> |
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14 | public readonly byte[] Data; |
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15 | /// <summary>Length of the data to transmit</summary> |
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16 | public int DataLength; |
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17 | /// <summary>EndPoint of the remote host</summary> |
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18 | public EndPoint RemoteEndPoint; |
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19 | |||
20 | /// <summary> |
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21 | /// Create an allocated UDP packet buffer for receiving a packet |
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22 | /// </summary> |
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23 | public UDPPacketBuffer() |
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24 | { |
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25 | Data = new byte[UDPPacketBuffer.BUFFER_SIZE]; |
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26 | // Will be modified later by BeginReceiveFrom() |
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27 | RemoteEndPoint = new IPEndPoint(Settings.BIND_ADDR, 0); |
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28 | } |
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29 | |||
30 | /// <summary> |
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31 | /// Create an allocated UDP packet buffer for sending a packet |
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32 | /// </summary> |
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33 | /// <param name="endPoint">EndPoint of the remote host</param> |
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34 | public UDPPacketBuffer(IPEndPoint endPoint) |
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35 | { |
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36 | Data = new byte[UDPPacketBuffer.BUFFER_SIZE]; |
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37 | RemoteEndPoint = endPoint; |
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38 | } |
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39 | |||
40 | /// <summary> |
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41 | /// Create an allocated UDP packet buffer for sending a packet |
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42 | /// </summary> |
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43 | /// <param name="endPoint">EndPoint of the remote host</param> |
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44 | /// <param name="bufferSize">Size of the buffer to allocate for packet data</param> |
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45 | public UDPPacketBuffer(IPEndPoint endPoint, int bufferSize) |
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46 | { |
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47 | Data = new byte[bufferSize]; |
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48 | RemoteEndPoint = endPoint; |
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49 | } |
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50 | } |
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51 | |||
52 | /// <summary> |
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53 | /// Object pool for packet buffers. This is used to allocate memory for all |
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54 | /// incoming and outgoing packets, and zerocoding buffers for those packets |
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55 | /// </summary> |
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56 | public class PacketBufferPool : ObjectPoolBase<UDPPacketBuffer> |
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57 | { |
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58 | private IPEndPoint EndPoint; |
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59 | |||
60 | /// <summary> |
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61 | /// Initialize the object pool in client mode |
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62 | /// </summary> |
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63 | /// <param name="endPoint">Server to connect to</param> |
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64 | /// <param name="itemsPerSegment"></param> |
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65 | /// <param name="minSegments"></param> |
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66 | public PacketBufferPool(IPEndPoint endPoint, int itemsPerSegment, int minSegments) |
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67 | : base() |
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68 | { |
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69 | EndPoint = endPoint; |
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70 | Initialize(itemsPerSegment, minSegments, true, 1000 * 60 * 5); |
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71 | } |
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72 | |||
73 | /// <summary> |
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74 | /// Initialize the object pool in server mode |
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75 | /// </summary> |
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76 | /// <param name="itemsPerSegment"></param> |
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77 | /// <param name="minSegments"></param> |
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78 | public PacketBufferPool(int itemsPerSegment, int minSegments) |
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79 | : base() |
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80 | { |
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81 | EndPoint = null; |
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82 | Initialize(itemsPerSegment, minSegments, true, 1000 * 60 * 5); |
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83 | } |
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84 | |||
85 | /// <summary> |
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86 | /// Returns a packet buffer with EndPoint set if the buffer is in |
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87 | /// client mode, or with EndPoint set to null in server mode |
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88 | /// </summary> |
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89 | /// <returns>Initialized UDPPacketBuffer object</returns> |
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90 | protected override UDPPacketBuffer GetObjectInstance() |
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91 | { |
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92 | if (EndPoint != null) |
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93 | // Client mode |
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94 | return new UDPPacketBuffer(EndPoint); |
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95 | else |
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96 | // Server mode |
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97 | return new UDPPacketBuffer(); |
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98 | } |
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99 | } |
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100 | |||
101 | public static class Pool |
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102 | { |
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103 | public static PacketBufferPool PoolInstance; |
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104 | |||
105 | /// <summary> |
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106 | /// Default constructor |
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107 | /// </summary> |
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108 | static Pool() |
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109 | { |
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110 | PoolInstance = new PacketBufferPool(new IPEndPoint(Settings.BIND_ADDR, 0), 16, 1); |
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111 | } |
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112 | |||
113 | /// <summary> |
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114 | /// Check a packet buffer out of the pool |
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115 | /// </summary> |
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116 | /// <returns>A packet buffer object</returns> |
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117 | public static WrappedObject<UDPPacketBuffer> CheckOut() |
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118 | { |
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119 | return PoolInstance.CheckOut(); |
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120 | } |
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121 | } |
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122 | } |