利用TCP协议通过Socket编写的网络聊天工具2-通用类设计

来源：互联网发布：淘宝网的管理团队编辑：程序博客网时间：2024/05/17 06:36

在上一节中，还有即将给出的服务器代码，都使用了共同的工具类，包括一个Command类，用来负责表示通讯中的命令控制，一个ServerConfig类，用来表示服务器的配置，这个在客户端中也要使用，还有一个验证用户信息的类，在客户端使用。因为这三个类的通用新比较高，所以单独用一个dll工程来开发的这三个类，这样在客户端工程和服务器端工程中直接可以添加这个新的工程的DLL的引用。

整个项目源码下载地址：http://download.csdn.net/detail/weixingstudio/4301232

Command类：

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Collections.Specialized;using System.Runtime.Serialization;using System.IO;using System.Runtime.Serialization.Formatters.Binary;namespace UtilityClass{    /// <summary>    /// 通讯系统用的命令    /// </summary>    public class Command    {        public const string Connect = "00";                    // 连接        public const string ConnectConfirm = "01";             // 连接确认        public const string DisConnect = "02";                 // 请求离开        public const string RequestOnlineUser = "03";          // 请求在线用户列表        public const string VibrateAll = "04";                 // 请求对所有人震动        public const string VibrateOne = "05";                 // 请求对某人震动        public const string BroadcastAll = "06";               // 对所有人广播消息        public const string SendMessage2One = "07";            // 对指定人传送消息        public const string RedundantUserName = "10";          // 重复的用户名        public const string SomeoneConnected = "11";           // 通知有人上线        public const string SomeoneLeaveUnexpected = "12";     // 某人异常离开        public const string SomeoneLeave = "13";               // 有人离开        public const string ServerShutdown = "14";             // 服务器关闭        public const string ExceedMaxAllowedNumber = "15";     // 超出最大的允许连接数        public const string SendOnlinUserList = "16";          // 发送用户列表        /// <summary>        /// 编码命令，返回命令的字节流        /// </summary>        /// <param name="cmd">需要编码的命令</param>        /// <returns>返回字节流</returns>        public static byte[] EncodeCommand(string cmd)        {            byte[] command_byte = Encoding.Unicode.GetBytes(cmd);            return command_byte;        }        /// <summary>        /// 解码系统命令，返回字符串        /// </summary>        /// <param name="cmd">待解码的密令</param>        /// <returns>返回字符串</returns>        public static string DecodeCommand(byte[] cmd)        {            string cmd_string = Encoding.Unicode.GetString(cmd).TrimEnd('\0');            return cmd_string;        }        /// <summary>        /// 序列化在线用户列表        /// </summary>        /// <param name="onlineuser">序列化数组</param>        /// <returns>返回结果</returns>        public static byte[] SerializeOnlineUser(string[] onlineuser)        {            StringCollection onlineuserCollection = new StringCollection();            foreach (string user in onlineuser)            {                onlineuserCollection.Add(user);            }            IFormatter formatter = new BinaryFormatter();            MemoryStream stream = new MemoryStream();            formatter.Serialize(stream, onlineuserCollection);            byte[] result = stream.ToArray();            stream.Close();            return result;        }        /// <summary>        /// 反序列化在线用户列表        /// </summary>        /// <param name="userbyte">输入的字节流</param>        /// <returns>返回字符串集合</returns>        public static StringCollection DeserializeOnlineUser(byte[] userbyte)        {            IFormatter format = new BinaryFormatter();            MemoryStream stream = new MemoryStream();            stream.Write(userbyte, 0, userbyte.Length);            stream.Position = 0;            StringCollection onlineList = (StringCollection)format.Deserialize(stream);            return onlineList;        }        /// <summary>        /// 检查要传送的消息是否正确        /// </summary>        /// <param name="message"></param>        /// <returns></returns>        public static bool VerifyMessage(string message)        {            if (!message.Equals(""))            {                // 检查是否都是空格                char[] temp = message.ToArray();                bool flag = false;                foreach (char c in temp)                {                    if (c!=' '&& c!='\n' && c!=13)                    {                        flag = true;                        break;                    }                }                if (flag==true)                {                    return true;                }                else                {                    return false;                }                            }            else            {                return false;            }        }    }}

ServerConfig类：

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Net;namespace UtilityClass{    public class ServerConfig    {        // server ip        private string serverIP = "10.108.13.27";        // server port        private int serverPort = 8888;        // max buffer for receive data from client, 56K        private int maxBuffer = 56 * 1024;        // IPAddress        private IPAddress ipAddress;        // max allowed online user        private int maxAllowedOnlineUser = 100;        public ServerConfig()        {            //         }        public ServerConfig(string ip, int port)        {            this.serverIP = ip;            this.serverPort = port;        }        public ServerConfig(string ip)        {            this.serverIP = ip;            this.serverPort = 8888;        }        public ServerConfig(int port)        {            this.serverIP = "127.0.0.1";            this.serverPort = port;        }        /// <summary>        /// 服务器IP地址        /// </summary>        public string ServerIP        {            get { return serverIP; }            set { serverIP = value; }        }        /// <summary>        /// 服务器监听端口        /// </summary>        public int ServerPort        {            get { return serverPort; }            set { serverPort = value; }        }        /// <summary>        /// 最大数据缓冲区        /// </summary>        public int MaxBuffer        {            get { return maxBuffer; }            set { maxBuffer = value; }        }        /// <summary>        /// 最大客户端连接数量        /// </summary>        public int MaxAllowedOnlineUser        {            get { return maxAllowedOnlineUser; }            set { maxAllowedOnlineUser = value; }        }    }}

VerifyUserInfo类：

using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace UtilityClass{    /// <summary>    /// 验证用户输入数据用的类    /// </summary>    public class VerifyUserInfo    {        /// <summary>        /// 验证用户输入用户名的合法性        /// </summary>        /// <param name="name">输入名</param>        /// <returns>结果</returns>        public bool VerifyUserName(string name)        {            if (name!="")            {                return true;            }            else            {                return false;            }        }        /// <summary>        /// 验证用户输入的IP知否正确        /// </summary>        /// <param name="ip">输入字符串</param>        /// <returns>输出结果</returns>        public bool VerifyServerIP(string ip)        {            if (ip=="")            {                return false;            }            else            {                string[] ipA = ip.Split('.');                if (ipA.Length!=4)                {                    return false;                }                else                {                    int ip1, ip2, ip3, ip4;                    try                    {                        ip1 = int.Parse(ipA[0]);                        ip2 = int.Parse(ipA[1]);                        ip3 = int.Parse(ipA[2]);                        ip4 = int.Parse(ipA[3]);                    }                    catch (System.Exception ex)                    {                        return false;                    }                    if ((ip1>=0&&ip1<=255)&&(ip2>=0&&ip2<=255)&&(ip3>=0&&ip3<=255)&&(ip4>=0&&ip4<=255))                    {                        return true;                    }                    else                     {                        return false;                    }                }            }        }        /// <summary>        /// 验证用户输入端口        /// </summary>        /// <param name="port">端口</param>        /// <returns>结果</returns>        public bool VerifyServerPort(string port)        {            if (port=="")            {                return false;            }            else            {                int port_int;                try                {                    port_int = int.Parse(port);                }                catch (System.Exception ex)                {                    return false;                }                if (port_int>=1024&&port_int<=65535)                {                    return true;                }                else                {                    return false;                }            }        }    }}