基于Socket与NET.WEBMAIL发送邮件的源代码（二）

下面两个Class分别是基于WebMail和Socket：

  1using System;
  2using System.Web.Mail ;
  3using System.Collections;
  4using System.Text;
  5
  6namespace NewEgg.EmailRSM
  7{
  8    /**//// <summary>
  9    /// Summary description for SendEmailByNetWebMail.
 10    /// </summary>
 11    public class SendEmailByNetWebMail
 12    {
 13        private string m_server = "";
 14        private string m_userName = "";
 15        private string m_password = "";
 16        private EmailInfo m_emailinfo=null;
 17
 18        public SendEmailByNetWebMail()
 19        {
 20            //
 21            // TODO: Add constructor logic here
 22            //
 23        }
 24
 25        属性#region 属性
 26        /**//// <summary>
 27        /// EMAIL信息构件
 28        /// </summary>
 29        public EmailInfo EmailMessage
 30        {
 31            get {return m_emailinfo;}
 32            set {m_emailinfo=value;}
 33        }
 34
 35        /**//// <summary>
 36        /// SMTP服务器域名
 37        /// </summary>
 38        public string Server 
 39        {
 40            get { return m_server; }
 41            set { if (value != m_server) m_server = value; }
 42        } 
 43
 44        /**//// <summary>
 45        /// 用户名 [需要身份验证时]
 46        /// </summary>
 47        public string UserName 
 48        {
 49            get { return m_userName; }
 50            set { if (value != m_userName) m_userName = value; }
 51        } 
 52
 53        /**//// <summary>
 54        /// 密码 [需要身份验证时]
 55        /// </summary>
 56        public string Password 
 57        {
 58            get { return m_password; }
 59            set { if (value != m_password) m_password = value; }
 60        } 
 61        #endregion
 62
 63        /**//// <summary>
 64        /// 发送邮件
 65        /// </summary>
 66        public bool SendMail()
 67        {
 68            try
 69            {
 70                MailMessage mailObj =new MailMessage();
 71                mailObj.From =m_emailinfo.From ;
 72                mailObj.To =m_emailinfo.To ;
 73                mailObj.Subject =m_emailinfo.Subject ;
 74                mailObj.Body =m_emailinfo.Body;
 75                if(m_emailinfo.IsHtml)
 76                {
 77                    mailObj.BodyFormat=MailFormat.Html;
 78                }
 79                else
 80                {
 81                    mailObj.BodyFormat=MailFormat.Text ;
 82                }
 83                mailObj.Cc=m_emailinfo.CC ;
 84                mailObj.Bcc =m_emailinfo.BCC ;
 85
 86                switch(m_emailinfo.MailEncoding)
 87                {
 88                    case "GB2312":
 89                        mailObj.BodyEncoding=System.Text.Encoding.GetEncoding("GB2312");
 90                        break;
 91                    case "UTF-8":
 92                        mailObj.BodyEncoding=System.Text.Encoding.GetEncoding("UTF-8");
 93                        break;
 94                    default:
 95                        mailObj.BodyEncoding=Encoding.Default;
 96                        break;
 97                }
 98                switch(m_emailinfo.Priority)
 99                {
100                    case 1:
101                        mailObj.Priority=MailPriority.High ;
102                        break;
103                    case 2:
104                        mailObj.Priority=MailPriority.Normal  ;
105                        break;
106                    case 3:
107                        mailObj.Priority=MailPriority.Low  ;
108                        break;
109                    default:
110                        mailObj.Priority=MailPriority.Normal  ;
111                        break;
112                }
113                for (int i = 0; i < m_emailinfo.Attachments.Count; i++)
114                {
115                    MailAttachment myAttachment = new MailAttachment(m_emailinfo.Attachments[i].ToString() );
116                    mailObj.Attachments.Add(myAttachment);
117                }
118
119                mailObj.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpauthenticate", "1");   //basic authentication 
120
121                mailObj.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendusername", m_userName); //set your username here 
122
123                mailObj.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendpassword", m_password ); //set your password here 
124
125                mailObj.BodyFormat =MailFormat.Html;
126                mailObj.Priority = MailPriority.High;
127                SmtpMail.SmtpServer =m_server ;
128                SmtpMail.Send(mailObj);
129                return true;
130            }
131            catch
132            {
133                return false;
134            }
135        }
136
137        /**//// <summary>
138        /// 发送Email 
139        /// </summary>
140        /// <param name="email"></param>
141        /// <returns></returns>
142        public bool SendMail(EmailInfo email)
143        {
144            m_emailinfo=email;
145            return  SendMail();
146            
147        }
148
149        
150    }
151}
152

using System;
using System.Collections;
using System.Net.Sockets;
using System.IO;
using System.Text;
using System.Threading;

namespace NewEgg.EmailRSM
{
    /**//// <summary>
    /// Summary description for SendEmailBySocket.
    /// </summary>
    public class SendEmailBySocket
    {
        private string server = "";
        private int port = 25;
        private string userName = "";
        private string password = "";
        private EmailInfo emailinfo=null;
 
        public SendEmailBySocket()
        {
            //
            // TODO: Add constructor logic here
            //
        }

        属性#region 属性
        /**//// <summary>
        /// EMAIL信息构件
        /// </summary>
        public EmailInfo EmailMessage
        {
            get {return emailinfo;}
            set {emailinfo=value;}
        }

        /**//// <summary>
        /// SMTP服务器域名
        /// </summary>
        public string Server 
        {
            get { return server; }
            set { if (value != server) server = value; }
        } 

        /**//// <summary>
        /// SMTP服务器端口 [默认为25]
        /// </summary>
        public int Port 
        {
            get { return port; }
            set { if (value != port) port = value; }
        } 

        /**//// <summary>
        /// 用户名 [需要身份验证时]
        /// </summary>
        public string UserName 
        {
            get { return userName; }
            set { if (value != userName) userName = value; }
        } 

        /**//// <summary>
        /// 密码 [需要身份验证时]
        /// </summary>
        public string Password 
        {
            get { return password; }
            set { if (value != password) password = value; }
        } 
    

        #endregion

        /**//// <summary>
        /// 
        /// </summary>
        /// <param name="mail"></param>
        /// <returns></returns>
        public bool SendMail(EmailInfo mail)
        {
            emailinfo =mail;
            return SendMail();
        }


        /**//// <summary>
        /// 发送邮件
        /// </summary>
        public bool SendMail()
        {
            // 创建TcpClient对象， 并建立连接
            TcpClient tcp = null;
            try
            {
                tcp = new TcpClient (server, port);
            }
            catch (Exception)
            {
                throw new Exception ("无法连接服务器");
            }

            ReadString (tcp.GetStream());//获取连接信息

            // 开始进行服务器认证
            // 如果状态码是250则表示操作成功
            if (!Command (tcp.GetStream(), "EHLO Localhost", "250"))
                throw new Exception ("登陆阶段失败");

            if (userName != "")
            {
                // 需要身份验证
                if (!Command (tcp.GetStream(), "AUTH LOGIN", "334"))
                    throw new Exception ("身份验证阶段失败");
             
                string nameB64 = ToBase64 (userName); // 此处将username转换为Base64码
                if (!Command (tcp.GetStream(), nameB64, "334"))
                    throw new Exception ("身份验证阶段失败");
                 
                string passB64 = ToBase64 (password); // 此处将password转换为Base64码
                if (!Command (tcp.GetStream(), passB64, "235"))
                    throw new Exception ("身份验证阶段失败");
                
            }
            Thread.Sleep(100);

            // 准备发送
            WriteString (tcp.GetStream(), "mail From: " + emailinfo.From );
            WriteString (tcp.GetStream(), "rcpt to: " + emailinfo.ToPerson);
            WriteString (tcp.GetStream(), "data");

            // 发送邮件头
            WriteString (tcp.GetStream(), "Date: " + DateTime.Now); // 时间
            WriteString (tcp.GetStream(), "From: " + emailinfo.FromName  + "<" + emailinfo.From  + ">"); // 发件人
            WriteString (tcp.GetStream(), "Subject: " + emailinfo.Subject ); // 主题
            WriteString (tcp.GetStream(), "To:" + emailinfo.ToName  + "<" + emailinfo.To  + ">"); // 收件人
            WriteString (tcp.GetStream(), "Cc:" + emailinfo.CC   + "<" + emailinfo.CC   + ">"); // 收件人
            WriteString (tcp.GetStream(), "Bcc:" + emailinfo.BCC   + "<" + emailinfo.BCC  + ">"); // 收件人

            //邮件格式 
            WriteString (tcp.GetStream(), "Content-Type: multipart/mixed; boundary=\"unique-boundary-1\"");
            WriteString (tcp.GetStream(), "Reply-To:" + emailinfo.From ); // 回复地址
            WriteString (tcp.GetStream(), "X-Priority:" + emailinfo.Priority.ToString() ); // 优先级
            WriteString (tcp.GetStream(), "MIME-Version:1.0"); // MIME版本

            // 数据ID,随意
            WriteString (tcp.GetStream(), "Content-Transfer-Encoding:" + emailinfo.MailEncoding ); // 内容编码
            WriteString (tcp.GetStream(), "X-Mailer:NewEgg.MailSender"); // 邮件发送者
            WriteString (tcp.GetStream(), "");

            if(emailinfo.Attachments.Count>0)
            {
                WriteString (tcp.GetStream(), ToBase64 ("This is a multi-part message in MIME format.")); 
                WriteString (tcp.GetStream(), ""); 

                // 从此处开始进行分隔输入
                WriteString (tcp.GetStream(), "--unique-boundary-1");

                // 在此处定义第二个分隔符
                
                WriteString (tcp.GetStream(), "Content-Type: multipart/alternative;Boundary=\"unique-boundary-2\"");
                
                WriteString (tcp.GetStream(), "");
            }
            
            Thread.Sleep(100);
            if(!emailinfo.IsHtml)
            {
                // 文本信息
                if(emailinfo.Attachments.Count>0)
                {
                    WriteString (tcp.GetStream(), "--unique-boundary-2");
                }
                else
                {
                    WriteString (tcp.GetStream(), "--unique-boundary-1"); 
                }
                WriteString (tcp.GetStream(), "Content-Type: text/plain;charset=" + emailinfo.LanguageEncoding);
                WriteString (tcp.GetStream(), "Content-Transfer-Encoding:" + emailinfo.MailEncoding );
                WriteString (tcp.GetStream(), "");
                WriteString (tcp.GetStream(), emailinfo.Body );
                WriteString (tcp.GetStream(), "");//一个部分写完之后就写如空信息，分段
                if(emailinfo.Attachments.Count>0)
                {
                    WriteString (tcp.GetStream(), "--unique-boundary-2--");//分隔符的结束符号，尾巴后面多了--
                }
                else
                {
                    WriteString (tcp.GetStream(), "--unique-boundary-1"); 
                }
                WriteString (tcp.GetStream(), "");
            }
            else
            {
                //html信息

                if(emailinfo.Attachments.Count>0)
                {
                    WriteString (tcp.GetStream(), "--unique-boundary-2"); 
                }
                else
                {
                    WriteString (tcp.GetStream(), "--unique-boundary-1"); 
                }

                WriteString (tcp.GetStream(), "Content-Type: text/html;charset=" + emailinfo.LanguageEncoding ); 
                WriteString (tcp.GetStream(), "Content-Transfer-Encoding:" + emailinfo.MailEncoding ); 
                WriteString (tcp.GetStream(), ""); 
                WriteString (tcp.GetStream(), emailinfo.HtmlBody ); 
                WriteString (tcp.GetStream(), ""); 
                if(emailinfo.Attachments.Count>0)
                {
                    WriteString (tcp.GetStream(), "--unique-boundary-2--");//分隔符的结束符号，尾巴后面多了-- 
                    
                }
                else
                {
                    WriteString (tcp.GetStream(), "--unique-boundary-1"); 
                }
                WriteString (tcp.GetStream(), "");
            }

            if(emailinfo.Attachments.Count>0)
            {
                Thread.Sleep(100);
                // 发送附件
                // 对文件列表做循环
                for (int i = 0; i < emailinfo.Attachments.Count; i++)
                {
                    WriteString (tcp.GetStream(), "--unique-boundary-1"); // 邮件内容分隔符
                    WriteString (tcp.GetStream(), "Content-Type: application/octet-stream;name=\"" + ((EmailSender.AttachmentInfo)emailinfo.Attachments[i]).FileName + "\""); // 文件格式
                    WriteString (tcp.GetStream(), "Content-Transfer-Encoding: base64"); // 内容的编码
                    WriteString (tcp.GetStream(), "Content-Disposition:attachment;name=\"" + ((EmailSender.AttachmentInfo)emailinfo.Attachments[i]).FileName + "\""); // 文件名
                    WriteString (tcp.GetStream(), "");
                    WriteString (tcp.GetStream(), ((EmailSender.AttachmentInfo)emailinfo.Attachments[i]).Bytes); // 写入文件的内容
                    WriteString (tcp.GetStream(), "");
                }
            }
            Thread.Sleep(100);
            Command (tcp.GetStream(), ".", "250"); // 最后写完了，输入"." 

            // 关闭连接
            tcp.Close ();
            return true;
        }

 
        /**//// <summary>
        /// 向流中写入字符
        /// </summary>
        /// <param name="netStream">来自TcpClient的流</param>
        /// <param name="str">写入的字符</param>
        protected void WriteString (NetworkStream netStream, string str)
        {
            str = str + "\r\n"; // 加入换行符
            // 将命令行转化为byte[]
            byte[] bWrite = Encoding.GetEncoding(emailinfo.LanguageEncoding).GetBytes(str.ToCharArray());

            // 由于每次写入的数据大小是有限制的，那么我们将每次写入的数据长度定在７５个字节，一旦命令长度超过了７５，就分步写入。
            int start=0;
            int length=bWrite.Length;
            int page=0;
            int size=75;
            int count=size;
            try
            {
                if (length>75)
                {
                    // 数据分页
                    if ((length/size)*size<length)
                        page=length/size+1;
                    else
                        page=length/size;
                    for (int i=0;i<page;i++)
                    {
                        start=i*size;
                        if (i==page-1)
                            count=length-(i*size);
                        netStream.Write(bWrite,start,count);// 将数据写入到服务器上
                    }
                }
                else
                {
                    netStream.Write(bWrite,0,bWrite.Length);
                }
            }
            catch(Exception)
            {
                // 忽略错误
            }
        }

        /**//// <summary>
        /// 从流中读取字符
        /// </summary>
        /// <param name="netStream">来自TcpClient的流</param>
        /// <returns>读取的字符</returns>
        protected string ReadString (NetworkStream netStream)
        {
            string sp = null;
            byte[] by = new byte[1024];
            int size = netStream.Read(by,0,by.Length);// 读取数据流
            if (size > 0)
            {
                sp = Encoding.Default.GetString(by);// 转化为String
            }
            return sp;
        }

        /**//// <summary>
        /// 发出命令并判断返回信息是否正确
        /// </summary>
        /// <param name="netStream">来自TcpClient的流</param>
        /// <param name="command">命令</param>
        /// <param name="state">正确的状态码</param>
        /// <returns>是否正确</returns>
        protected bool Command (NetworkStream netStream, string command, string state)
        {
            string sp=null;
            bool success=false;
            try
            {
                WriteString (netStream, command);// 写入命令
                sp = ReadString (netStream);// 接受返回信息
                if (sp.IndexOf(state) != -1)// 判断状态码是否正确
                    success=true;
            }
            catch(Exception)
            {
                // 忽略错误
            }
            return success;
        }

        /**//// <summary>
        /// 字符串编码为Base64
        /// </summary>
        /// <param name="str">字符串</param>
        /// <returns>Base64编码的字符串</returns>
        protected string ToBase64 (string str)
        {
            try
            {
                byte[] by = Encoding.Default.GetBytes (str.ToCharArray());
                str = Convert.ToBase64String (by);
            }
            catch(Exception)
            {
                // 忽略错误
            }
            return str;
        }
 
    }
}