Unity3d网络传输：字节流序列化反序列化_序列化操作方法:public byte[] getbytes()

Unity客户端与服务器通信，通过传输byte数组实现。这里使用BitConverter进行数据的序列化与反序列化把int，float，string各种变量封装成一个byte进行通信。

Packet类如下

using UnityEngine;
using System.Collections;
using System;
using System.Collections.Generic;
using System.Text;

/// <summary>
/// 用来序列化string
/// </summary>
public class MyBitConverter
{
    static Encoding m_codePage = Encoding.UTF8;
    static public byte[] GetBytes(string sTmp)
    {
        if (sTmp == null)
        {
            return null;
        }
        return m_codePage.GetBytes(sTmp);
    }

    static public string GetString(byte[] bufByte, int idx, int iLen)
    {
        return m_codePage.GetString(bufByte, idx, iLen);
    }
}
public class Packet : System.Object
{
    public byte[] m_buf;
    public int m_iPos = 0;
    public int m_iSize = 0;
    
    /// <summary>
    /// 重新设置buf的size
    /// </summary>
    /// <param name="iNewSize"></param>
    public void sizeSet(int iNewSize)
    {
        if (iNewSize < m_iSize)
            return;
        byte[] tmp = new byte[iNewSize];//产生一个新大小的buff
        m_iSize = iNewSize;
        if (m_iPos > 0)
            m_buf.CopyTo(tmp, 0);
        m_buf = tmp;
    }

    /// <summary>
    /// 复制操作把一个数组给m_buf
    /// </summary>
    /// <param name="bufByte"></param>
    /// <param name="iLen"></param>
    /// <returns></returns>
    public int write(byte[] bufByte,int iLen)
    {
        int iNewPos = m_iPos + iLen;
        //当新产生的位置大于老的size时，扩容
        if (iNewPos > m_iSize)
            sizeSet(iNewPos);

        if(iLen < bufByte.Length)
        {
            Array.Copy(bufByte, 0, m_buf, m_iPos, iLen);//只复制当前部分的数组
        }
        else if (iLen > bufByte.Length)
        {
            bufByte.CopyTo(m_buf, m_iPos);
            for (int i = 0; i < iLen - bufByte.Length; i++)
            {
                m_buf[m_iPos + bufByte.Length + i] = 0;
            }
        }
        else if (iLen == bufByte.Length)
        {
            bufByte.CopyTo(m_buf, m_iPos);
        }
        m_iPos = iNewPos;
        return m_iPos;
    }

    static public Packet operator+(Packet self,int tmp)
    {
        byte[] bufByte = BitConverter.GetBytes(tmp);
        self.write(bufByte, bufByte.Length);
        return self;
    }

    static public Packet operator +(Packet self, float tmp)
    {
        byte[] bufByte = BitConverter.GetBytes(tmp);
        self.write(bufByte, bufByte.Length);
        return self;
    }

    static public Packet operator +(Packet self, ushort tmp)
    {
        byte[] bufByte = BitConverter.GetBytes(tmp);
        self.write(bufByte, bufByte.Length);
        return self;
    }

    static public Packet operator +(Packet self, string tmp)
    {
        if ( tmp == null)
        {
            byte[] bufByte = BitConverter.GetBytes(0);
            self.write(bufByte, sizeof(int));
        }
        
        if(tmp.Length > 0)
        {
            byte[] bufByte = MyBitConverter.GetBytes(tmp);
            byte[] bufLen = BitConverter.GetBytes(tmp.Length);
            self.write(bufLen, sizeof(int));
            self.write(bufByte, bufByte.Length);
        }
        else if (tmp.Length == 0)
        {
            byte[] bufByte = BitConverter.GetBytes(0);
            self.write(bufByte, sizeof(int));
        }
        return self;
    }

    public Packet to(ref int tmp)
    {
        int iOffset = 4;
        if (m_iPos + iOffset <= m_buf.Length)
        {
            tmp = BitConverter.ToInt32(m_buf, m_iPos);
            m_iPos += iOffset;
        }
        return this;
    }

    public Packet to(ref uint tmp)
    {
        int iOffset = 4;
        if (m_iPos + iOffset <= m_buf.Length)
        {
            tmp = BitConverter.ToUInt32(m_buf, m_iPos);
            m_iPos += iOffset;
        }
        return this;
    }

    public Packet to(ref float tmp)
    {
        int iOffset = 4;
        if (m_iPos + iOffset <= m_buf.Length)
        {
            tmp = BitConverter.ToSingle(m_buf, m_iPos);
            m_iPos += iOffset;
        }
        return this;
    }

    public Packet to(ref ushort tmp)
    {
        int iOffset = 2;
        if (m_iPos + iOffset <= m_buf.Length)
        {
            tmp = BitConverter.ToUInt16(m_buf, m_iPos);
            m_iPos += iOffset;
        }
        return this;
    }

    public Packet to(ref string tmp)
    {
        if (tmp == null)
            tmp = "";
        int iLen = 0;
        this.to(ref iLen);
        if (iLen == 0)
        {
            tmp = "";
            return this;
        }
        tmp = MyBitConverter.GetString(m_buf, m_iPos, iLen);
        m_iPos += iLen;
        return this;
    }

    public void posSet(int tmp)
    {
        m_iPos = tmp;
    }

    static public Packet bufByteToPkt(byte[] bufByte,int iLen)
    {
        Packet pkt = new Packet();
        pkt.sizeSet(iLen);
        System.Array.Copy(bufByte, 0, pkt.m_buf, 0, iLen);
        pkt.m_iPos = 0;
        return pkt;
    }

}

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200

使用示例如下

using UnityEngine;
using System.Collections;

public class Test : MonoBehaviour {

    int m_iCnt = 0;
    public int m_recv = 0;
    public UILabel m_labShow;
	// Use this for initialization
	void Start () {
        Packet pkt = new Packet();
        int i1 = 1;
        int i2 = 2;
        float f3 = 3.0f;
        string str = "luoyikun";
        pkt = pkt + i1 + i2 + f3 + str;
        pkt.posSet(0);
        pktTest(pkt);

	}
	
    void pktTest(Packet pkt)
    {
        int i1 = 0;
        int i2 = 0;
        float i3 = 0.0f;
        string str = "";
        pkt.to(ref i1).to(ref i2).to(ref i3).to(ref str);
    }
}
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30