using system;
using system.text;
using system.io;
using system.net;
using system.net.sockets;
namespace blood.com.classlib
{
/// <summary>
/// tcpclient派生类，用来进行smtp服务器的连接工作
/// </summary>
public class smtpclient : tcpclient
{
public bool isconnected()
{
return active;
}
public void sendcommandtoserver(string command)
{
networkstream ns = this.getstream() ;
byte[]writebuffer ;
writebuffer = new byte[1024] ;
writebuffer = encoding.default.getbytes(command) ;
ns.write(writebuffer,0,writebuffer.length);
return;
}
public string getserverresponse()
{
int streamsize ;
string returnvalue = ;
byte[]readbuffer ;
networkstream ns = this.getstream() ;
readbuffer = new byte[1024] ;
streamsize = ns.read(readbuffer,0,readbuffer.length);
if (streamsize==0)
{
return returnvalue ;
}
else
{
returnvalue = encoding.default.getstring(readbuffer);
returnreturnvalue;
}
}
public bool doesstringcontainsmtpcode(string s,string smtpcode)
{
return(s.indexof(smtpcode,0,10)==-1)?false:true;
}
} //结束类
/// <summary>
/// 发送邮件类
/// </summary>
public class smtpmail
{
/// <summary>
/// 错误反馈信息
/// </summary>
private string strerrmessage = null;
/// <summary>
/// smtp服务器反馈的信息
/// </summary>
private string strresponse;
/// <summary>
/// 构造函数
/// </summary>
public smtpmail()
{
strerrmessage = ;
strresponse = ;
}
/// <summary>
/// 取得错误反馈信息
/// </summary>
public string errormessage
{
get
{
return strerrmessage ;
}
}
/// <summary>
/// 取得smtp服务器反馈的信息
/// </summary>
public string serverresponse
{
get
{
return strresponse;
}
}
/// <summary>
/// 邮件发送优先级
/// </summary>
public enum prioritys
{
/// <summary>
/// 最高级别
/// </summary>
high = 1,
/// <summary>
/// 默认级别
/// </summary>
normal = 3,
/// <summary>
/// 最低级别
/// </summary>
low = 5
}
public void sendmail(string smtphost,int port,string from,string displayfromname,string to,string displaytoname,prioritys priority,bool html,string base,string subject,string message)
{
try
{
string strresponsenumber;
smtpclient smtpcmail = new smtpclient();
smtpcmail.connect(smtphost,port);
bool bolconnect = smtpcmail.isconnected();
//判断是否进行了连接
if (!bolconnect)
{
strerrmessage = smtp服务器连接失败...;
return;
}
//读取反馈信息
strresponsenumber = smtpcmail.getserverresponse();
if (smtpcmail.doesstringcontainsmtpcode(strresponsenumber,220))
{
this.strresponse += strresponsenumber;
}
else
{
this.strerrmessage = 连接失败 + strresponsenumber;
return ;
}
string[] strsendbuffer = new string[6];
string[] strresponsecode = {220,250,251,354,221};// success codes from smtp server
string strdata = ;
strdata = string.concat(helo ,smtphost);
strdata = string.concat(strdata,/r/n);
strsendbuffer[0] = strdata;
strdata = ;
strdata = string.concat(mail from: ,< + from + >);
strdata = string.concat(strdata,/r/n);
strsendbuffer[1] = strdata;
strdata = ;
strdata = string.concat(rcpt to: ,< + to + >);
strdata = string.concat(strdata,/r/n);
strsendbuffer[2] = strdata;
strdata = ;
strdata = string.concat(data,/r/n);
strsendbuffer[3] = strdata;
strdata = ;
strdata = string.concat(from: ,displayfromname + < + from + >);
strdata = string.concat(strdata,/r/n );
strdata = string.concat(strdata,to: );
strdata = string.concat(strdata,displaytoname + < + to + >);
strdata = string.concat(strdata,/r/n );
strdata = string.concat(strdata,subject: );
strdata = string.concat(strdata,subject);
strdata = string.concat(strdata,/r/n);
strdata = string.concat(strdata,mime-version: 1.0 );
strdata = string.concat(strdata,/r/n);
strdata = string.concat(strdata,x-priority: + priority);
strdata = string.concat(strdata,/r/n);
strdata = string.concat(strdata,x-msmail-priority: + priority);
strdata = string.concat(strdata,/r/n);
if(html == true)
{
strdata = string.concat(strdata,content-type: text/html; );
}
else
{
strdata = string.concat(strdata,content-type: text/plain; );
}
strdata = string.concat(strdata,/r/n);
strdata = string.concat(strdata,charset=/iso-8859-1/ );
strdata = string.concat(strdata,/r/n);
if(html == true)
{
strdata = string.concat(strdata,content-transfer-encoding: text/html; );
}
else
{
strdata = string.concat(strdata,content-transfer-encoding: text/plain; );
}
strdata = string.concat(strdata,/r/n);
strdata = string.concat(strdata,content-base: / + base + / );
strdata = string.concat(strdata,/r/n + /r/n);
strdata = string.concat(strdata,message);
strdata = string.concat(strdata,/r/n./r/n);
strsendbuffer[4] = strdata;
strdata = ;
strdata = string.concat(strdata,quit/r/n);
strsendbuffer[5] = strdata;
int i = 0 ;
while(i < strsendbuffer.length)
{
smtpcmail.sendcommandtoserver(strsendbuffer[i]);
strresponsenumber = smtpcmail.getserverresponse();
for(int j=0;j<strresponsecode.length;j++)
{
if (smtpcmail.doesstringcontainsmtpcode(strresponsenumber,strresponsecode[j]))
{
this.strresponse += strresponsenumber;
this.strresponse += <br>;
break;
}
else
{
if(j==strresponsecode.length-1)
{
this.strerrmessage += strresponsenumber;
this.strerrmessage += strsendbuffer[i];
return;
}
}
}
i++ ;
} // 结束循环
}
catch(socketexception err)
{
this.strerrmessage += err.message + + err.stacktrace;
}
catch(exception e)
{
this.strerrmessage += e.message + + e.stacktrace;
}
} //结束邮件发送方法
} // 结束类
} // 结束namespace