.Net网络通讯编程[利用Socket实现字串、文件、序列化对象传输]--类设计1

本案例使用.Net Socket的Tcp、Udp实现字串、文件、各种序列化对象的网络传输，同时封装了Tcp的粘包、半包处理细节，定义了网络封包格式,在发送端和接收端无需考虑内部传输细节。以下是类设计：

序列化相关类类图：

序列化相关类代码：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace TcpLabCommon
{
    /// <summary>
    /// 序列化工具
    /// </summary>
    public interface ISerializeHelper
    {
        /// <summary>
        /// 序列化
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="stream"></param>
        /// <param name="item"></param>
        void Serialize<T>(System.IO.Stream stream, T item);

        /// <summary>
        /// 反序列化
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="stream"></param>
        /// <returns></returns>
        T DeSerialize<T>(System.IO.Stream stream);


    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml.Serialization;
using System.Xml;
using System.Runtime.Serialization.Formatters.Binary;
using System.Runtime.Serialization.Formatters.Soap;
using System.Runtime.Serialization.Json;

namespace TcpLabCommon
{
    /// <summary>
    /// Xml序列化
    /// </summary>
    public class XmlSerializeHelper:ISerializeHelper
    {

        public void Serialize<T>(System.IO.Stream stream, T item)
        {
            XmlSerializer serializer = new XmlSerializer(item.GetType());
            stream.Seek(0, System.IO.SeekOrigin.Begin);
            serializer.Serialize(stream, item); 
        }

        public T DeSerialize<T>(System.IO.Stream stream)
        {
            XmlSerializer serializer = new XmlSerializer(typeof(T));
            stream.Seek(0, System.IO.SeekOrigin.Begin);
            return (T)serializer.Deserialize(stream);
        }
    }

    /// <summary>
    /// 二进制序列化
    /// </summary>
    public class BinarySerializeHelper : ISerializeHelper
    {

        public void Serialize<T>(System.IO.Stream stream, T item)
        {
            BinaryFormatter formatter = new BinaryFormatter();
            stream.Seek(0, System.IO.SeekOrigin.Begin);
            formatter.Serialize(stream, item);
        }

        public T DeSerialize<T>(System.IO.Stream stream)
        {
            BinaryFormatter formatter = new BinaryFormatter();
            stream.Seek(0, System.IO.SeekOrigin.Begin);
            return (T)formatter.Deserialize(stream);
        }
    }

    /// <summary>
    /// Soap序列化
    /// </summary>
    public class SoapSerializeHelper : ISerializeHelper
    {

        public void Serialize<T>(System.IO.Stream stream, T item)
        {
            SoapFormatter formatter = new SoapFormatter();
            stream.Seek(0, System.IO.SeekOrigin.Begin);
            formatter.Serialize(stream, item);
        }

        public T DeSerialize<T>(System.IO.Stream stream)
        {
            SoapFormatter formatter = new SoapFormatter();
            return (T)formatter.Deserialize(stream);
        }
    }

    /// <summary>
    /// Json序列化
    /// </summary>
    public class JsonSerializeHelper : ISerializeHelper
    {

        public void Serialize<T>(System.IO.Stream stream, T item)
        {
            DataContractJsonSerializer formatter = new DataContractJsonSerializer(typeof(T));
            stream.Seek(0, System.IO.SeekOrigin.Begin);
            formatter.WriteObject(stream, item);
        }

        public T DeSerialize<T>(System.IO.Stream stream)
        {
            DataContractJsonSerializer formatter = new DataContractJsonSerializer(typeof(T));
            stream.Seek(0, System.IO.SeekOrigin.Begin);
            return (T)formatter.ReadObject(stream);
        }
    }
}

 

网络封包相关类类图：

网络封包相关类代码:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace TcpLabCommon
{
    /// <summary>
    /// 包类型
    /// </summary>
    public enum PacketType
    {
        /// <summary>
        /// 简单字符串传输
        /// </summary>
        STRING=0,
        /// <summary>
        /// 二进制[文件传输]
        /// </summary>
        BINARY=1,
        /// <summary>
        /// 复杂对象传输[使用序列化和反序列化]
        /// </summary>
        COMPLEX=2
    }


    /// <summary>
    /// 包头
    /// </summary>
    public class NetPacketHead
    {
        /// <summary>
        /// 包头大小
        /// </summary>
        public const Int32 HEAD_SIZE = 4 * 3;

        private Int32 _version = 1;

        /// <summary>
        /// 版本
        /// </summary>
        public Int32 Version
        {
            get { return _version; }
            set { _version = value; }
        }

        private PacketType _pType = PacketType.STRING;
        /// <summary>
        /// 包类型[决定如何解包]
        /// </summary>
        public PacketType PType
        {
            get { return _pType; }
            set { _pType = value; }
        }

        private Int32 _len = 0;
        /// <summary>
        /// 包体长度[决定后面data数据的长度]
        /// </summary>
        public Int32 Len
        {
            get { return _len; }
            set { _len = value; }
        }

        
    }

    /// <summary>
    /// 网络数据包【Udp建议大小不超过548个字节,Internet标准MTU为576,减去IP数据报头(20字节)和UDP数据包头(8字节)】
    /// </summary>
    public class NetPacket
    {

        NetPacketHead _packetHead;
        /// <summary>
        /// 包头
        /// </summary>
        public NetPacketHead PacketHead
        {
            get { return _packetHead; }
            set { _packetHead = value; }
        }

        private object _data=null;
        /// <summary>
        /// 包体，根据封包类型决定包体数据类型
        /// STRING:包体为String
        /// BINARY:包体为Byte[]
        /// COMPLEX:包体为可序列化的对象
        /// </summary>
        public object Data
        {
            get { return _data; }
            set { _data = value; }
        }
    }

    /// <summary>
    /// 传输的文件
    /// </summary>
    public class NetFile
    {
        private string _fileName = string.Empty;

        public string FileName
        {
            get { return _fileName; }
            set { _fileName = value; }
        }
        private Byte[] _content;

        public Byte[] Content
        {
            get 
            {
                if (_content==null)
                    _content = new Byte[]{};
                return _content; 
            }
            set { _content = value; }
        }
    }
}

提供网络封包传输服务的核心类：