Asp.net Socket 客户端(发送和接收数据 )

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/***************************************
* 对象名称: SocketObj
* 功能说明: 远程发送与接收
* 试用示例:
* using EC; //引用空间名
* string url = “218.75.111.74″; // URL也可以是(www.baidu.com)这种形式
* int port = 8000; //端口
* string SendStr = “domainname\\n”; //组织要发送的字符串
* SendStr += “check\\n”;
* SendStr += “entityname:domains\\n”;
* SendStr += “domainname:” + this.TextBox1.Text + “\\n”;
* SendStr += “.\\n”;
* EBSocketObj o = new SocketObj(); //创建新对象
* o.Connection(url, port); //打开远程端口
* o.Send(SendStr); //发送数据
* Response.Write(o.Recev()); //接收数据
* o.Dispose(); //销毁对象

**********************************************/

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

namespace EC
{
/// <summary>
/// Socket 远程发送与接收
/// </summary>
public class SocketObj
{
private NetworkStream ns;
private bool _alreadyDispose = false;

#region 构造与释构
public EBSocketObj()
{
//
// TOD 在此处添加构造函数逻辑
//
}
public EBSocketObj(string url, int port)
{
Connection(url, port);
}
~EBSocketObj()
{
Dispose();
}
protected virtual void Dispose(bool isDisposing)
{
if (_alreadyDispose) return;
if (isDisposing)
{
if (ns != null)
{
try
{
ns.Close();
}
catch (Exception E) { }
ns.Dispose();
}
}
_alreadyDispose = true;
}
#endregion

#region IDisposable 成员

public void Dispose()
{
Dispose(true);
GC.SuppressFinalize(this);
}
#endregion

#region 打开端口
/// <summary>
/// 打开端口
/// </summary>
/// <param name=”url”>URL或者:IP地址</param>
/// <param name=”port”></param>
/// <returns></returns>
public virtual void Connection(string url, int port)
{
if (url == null || url == “”) return;
if (port < 0) return;
if (port.ToString()==string.Empty) port = 80;
TcpClient tcp = null;
try
{
tcp = new TcpClient(url, port);
}
catch (Exception E)
{
throw new Exception(“Can’t connection:” + url);
}
this.ns = tcp.GetStream();
}
#endregion

#region 发送Socket
/// <summary>
/// 发送Socket
/// </summary>
/// <param name=”ns”></param>
/// <param name=”message”></param>
/// <returns></returns>
public virtual bool Send(string message)
{
if (ns == null) return false;
if (message == null || message == “”) return false;
byte[] buf = Encoding.ASCII.GetBytes(message);
try
{
ns.Write(buf, 0, buf.Length);
}
catch (Exception E)
{
throw new Exception(“Send Date Fail!”);
}
return true;
}
#endregion

#region 收取信息
/// <summary>
/// 收取信息
/// </summary>
/// <param name=”ns”></param>
/// <returns></returns>
public string Recev()
{
if (ns == null) return null;
byte[] buf = new byte[4096];
int length = 0;
try
{
length = ns.Read(buf, 0, buf.Length);
}
catch (Exception E)
{
throw new Exception(“Receive data fail!”);
}
return Encoding.ASCII.GetString(buf, 0, length);
}
#endregion

}
}

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