近几年工作经常使用RFID识读器，智能家居网关，温湿度传感器、串口服务器、视频编码器等，一般是有串口和网口，由于现场原因一般较少使用串口，大多使用网口。连接方法是IP地址和端口，有的设备带搜索软件，有的就不带。经常测试环境和现场来回用，难免记混。同时使用网上的一些端口扫描工具，发现有一个问题，就是在进行扫描的时候，不怎么好用，比如，扫描器一般都是带端口扫描的，但是，我仅仅只用扫描设备在不在线，不用扫描端口，但是有一些设备是只要扫描端口，这个怎么更方便更好用呢？
同时在扫描成功之后，需要通过TCP连接到设备，发数据，看数据能不能正常相应，或者设备状态对不对，这是不是又要单独开另外一个软件？使用起来，比较繁琐，因此就根据自己的需要制作了一个小工具，用来扫描IP和端口。
扫描速度一定要快，成功和不成功区分要明显，好了，先上图:
一、主要IP扫描方法：
（1）、IP地址匹配，看IP设置是否正确
//匹配正确的IP地址
Regex rgx = new Regex(@"^([1-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])(\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])){3}$"); if (rgx.IsMatch(IPStarttextBox.Text) && rgx.IsMatch(IPStoptextBox.Text))//匹配正确IP
{
if (scan_type == 1)
{
int startIp = Int32.Parse(IPStarttextBox.Text.Split('.')[3]);
int endIp = Int32.Parse(IPStoptextBox.Text.Split('.')[3]);
progressBar.Minimum = startIp;
progressBar.Maximum = endIp;
}
else
{
if (PortStarttextBox.Text == "")
{
MessageBox.Show("请输入端口号！");
}
else
{
portStart = Int32.Parse(PortStarttextBox.Text);
portEnd = Int32.Parse(PortEndtextBox.Text);
progressBar.Minimum = portStart;
progressBar.Maximum = portEnd;
} if (portEnd < portStart)
{
MessageBox.Show("请填写正确端口范围");
return;
}
} }
else
{
MessageBox.Show("请填写正确IP");
return;
}
（2）、获取主机名
public static string GetHostEntry(object ip)
{
string hostname = "-";
try
{
IPHostEntry host = Dns.GetHostEntry(ip.ToString());
hostname = host.HostName;
}
catch(Exception ex)
{
Console.WriteLine(ex.ToString());
}
return hostname;
}
（3）、获取MAC地址
[DllImport("ws2_32.dll")]
private static extern int inet_addr(string cp);
[DllImport("IPHLPAPI.dll")]
private static extern int SendARP(Int32 DestIP, Int32 SrcIP, ref Int64 pMacAddr, ref Int32 PhyAddrLen);
private string GetMacAddress(string hostip)//获取远程IP（不能跨网段）的MAC地址
{
string Mac = "";
try
{
Int32 ldest = inet_addr(hostip); //将IP地址从 点数格式转换成无符号长整型
Int64 macinfo = new Int64();
Int32 len = ;
SendARP(ldest, , ref macinfo, ref len);
string TmpMac = Convert.ToString(macinfo, ).PadLeft(, '');//转换成16进制 注意有些没有十二位
Mac = TmpMac.Substring(, ).ToUpper();//
for (int i = ; i < TmpMac.Length; i = i + )
{
Mac = TmpMac.Substring(i, ).ToUpper() + "-" + Mac;
}
}
catch (Exception Mye)
{
Mac = "获取远程主机的MAC错误：" + Mye.Message;
}
return Mac;
}
（3）、主要准备工作做好了，接下来，进入主题，如何通过多线程判断IP是否在线。
Thread waitT = new Thread(new ThreadStart(ipwait));
waitT.Start();//等待所有线程执行完毕在写入textbox中 public void ipwait()
{
int startIp = Int32.Parse(IPStarttextBox.Text.Split('.')[]);
int endIp = Int32.Parse(IPStoptextBox.Text.Split('.')[]);
ListViewItem lvi; string ip = IPStarttextBox.Text.Split('.')[] + "." + IPStarttextBox.Text.Split('.')[] + "." + IPStarttextBox.Text.Split('.')[] + ".";
String ipaddr = "";
int timeout = int.Parse(TimeOuttextBox.Text); string mac = ""; progressBar.Minimum = startIp;
progressBar.Maximum = endIp;
try
{ for (int q = startIp; q <= endIp && isrun == true; q++)
{ //---------------------ping
ipaddr = ip + q;
lvi = new ListViewItem();
Ping ping = new Ping();
PingReply reply = ping.Send(IPAddress.Parse(ipaddr), overTime); if (reply.Status == IPStatus.Success)
{ ResuleTextBox.Text += ipaddr + " Ping时间 " + reply.RoundtripTime + " 毫秒\n";
mac= GetMacAddress(ipaddr);
// IPHostEntry host = Dns.GetHostEntry(ipaddr);
// IPHostEntry host = Dns.GetHostByAddress(ipaddr);
// ResuleTextBox.Text += "主机名为 " + host.HostName + "\n";
// ScanResultlistBox.Items.Add(ipaddr + " " + mac + " 在线 ");
lvi.BackColor = Color.LightSeaGreen;
lvi.Text = ipaddr;
Task<string> t1 = new Task<string>(GetHostEntry,ipaddr);
t1.Start();
t1.Wait(timeout); //设置获取主机名超时时间
if(t1.IsCompleted)
{
lvi.SubItems.Add(t1.Result);
}
else
{
lvi.SubItems.Add("-");
}
lvi.SubItems.Add(mac);
lvi.SubItems.Add("在线"); }
else
{
lvi.BackColor = Color.Pink;
lvi.Text = ipaddr;
lvi.SubItems.Add("-");
lvi.SubItems.Add("-");
lvi.SubItems.Add("不在线");
} progressBar.Value = q;
progressBar.Update();
ListViewUpdate(lvi);
ResuleTextBox.SelectionStart = ResuleTextBox.Text.Length -;
ResuleTextBox.ScrollToCaret();
}
ScanResultlistBox.Items[ScanResultlistBox.Items.Count - ].EnsureVisible(); }
catch(Exception ex)
{
Console.WriteLine(ex.ToString());
isrun = false;
progressBar.Value = progressBar.Minimum;
startScanbutton.Enabled = true;
stopScanbutton.Enabled = false;
ResuleTextBox.Text += ex.ToString();
}
startScanbutton.Enabled = true;
stopScanbutton.Enabled = false;
isrun = false;
progressBar.Value = progressBar.Maximum; }
说明一下：在我获取主机名的过程中，发现如果不对获取主机名设置一个超时时间，那么将会出现一个问题，程序将会卡在获取主机名的这个阶段，无法向下继续执行，因为，为了高效的执行，给获取主机名设置一个超时时间，将会大大提高程序的执行效率。
二、主要端口状态获取方法
Thread waitT = new Thread(new ThreadStart(portwait));
waitT.Start();//等待所有线程执行完毕在写入textbox中
public void portwait()
{
int startIp = Int32.Parse(IPStarttextBox.Text.Split('.')[]);
int endIp = Int32.Parse(IPStoptextBox.Text.Split('.')[]); string ip = IPStarttextBox.Text.Split('.')[] + "." + IPStarttextBox.Text.Split('.')[] + "." + IPStarttextBox.Text.Split('.')[] + ".";
String mac = "" , ipaddr ="";
ListViewItem lvi;
String host;
int timeout = int.Parse(TimeOuttextBox.Text);
for (int q = startIp; q <= endIp && isrun == true; q++)
{
ResuleTextBox.Text += (ip + q) + " IP地址扫描中---\n";
//---------------------ping
Ping ping = new Ping(); PingReply reply = ping.Send(IPAddress.Parse(ip + q), overTime);
ipaddr = ip + q;
if (reply.Status == IPStatus.Success)
{
ResuleTextBox.Text +=ipaddr + " Ping时间" + reply.RoundtripTime + "毫秒\n";
mac = GetMacAddress(ipaddr);
Task<string> t1 = new Task<string>(GetHostEntry, ipaddr);
t1.Start();
t1.Wait(timeout);
if (t1.IsCompleted)
{
host = t1.Result.ToString();
}
else
{
host = "-";
}
ResuleTextBox.Text += "MAC地址为 " + mac + "\n";
}
else
{
// ScanResultlistBox.Items.Add(ipaddr + " " + "-" + " " + "-" + " " + " - 不可达\n");
lvi = new ListViewItem();
lvi.BackColor = Color.Pink;
lvi.Text = ipaddr;
lvi.SubItems.Add("-");
lvi.SubItems.Add("-");
lvi.SubItems.Add("不可达");
ResuleTextBox.Text += ipaddr + "不可达\n";
ListViewUpdate(lvi);
continue;
} //---------------------end
Thread[] tharr;
if (numThread < (portEnd - portStart + ))
{
tharr = new Thread[portEnd - portStart + ];
}
else
{
tharr = new Thread[numThread];
}
str = new List<string>();
for (int i = portStart; (i <= portEnd) && (isrun ==true); i++)
{
Thread thread = new Thread(new ParameterizedThreadStart(Scan));
thread.Start(new IPEndPoint(IPAddress.Parse(ip + q), i));//每扫描一个端口创建一个线程 ResuleTextBox.Text += i + " 端口扫描中---\n"; tharr[i - portStart] = thread;
progressBar.Value = i; string s = State(i); lvi = new ListViewItem(); if (s == "Open")
{
lvi.BackColor = Color.LightSeaGreen;
}
else
{
lvi.BackColor = Color.Silver;
} lvi.Text = ipaddr + ":" + i.ToString();
lvi.SubItems.Add(host);
lvi.SubItems.Add(mac); if (checkBox1.Checked)
{
if (s == "Open")
{ // ScanResultlistBox.Items.Add(ip + q + " " + mac +" "+ i + " " + s + " " + " " + Service(i)); lvi.SubItems.Add(i.ToString());
lvi.SubItems.Add(s);
lvi.SubItems.Add(Service(i));
}
else
{
lvi = null;
}
}
else
{
if (s == "Open")
{ // ScanResultlistBox.Items.Add(ip + q + " " + mac + " " + i + " " + s + " " + " " + Service(i)); lvi.SubItems.Add(i.ToString());
lvi.SubItems.Add(s);
lvi.SubItems.Add(Service(i));
}
else
{
// ScanResultlistBox.Items.Add(ip + q + " " + mac + " " + i + " " + s + " " + " "); lvi.SubItems.Add(i.ToString());
lvi.SubItems.Add(s);
lvi.SubItems.Add("");
}
}
if (lvi != null)
{
ListViewUpdate(lvi);
}
} bool iscon = true;//第一个线程等待时间
for (int i = ; i < tharr.Length; i++)
{
if (tharr[i] == null)
continue;
while (tharr[i].IsAlive && iscon)//端口超时设置时间(目前200毫秒),一直等待此ip所有线程执行完毕才扫描下个ip
{
Thread.Sleep();
iscon = false;//第一个线程给200ms等待时间，其他线程由于同步执行的，所以没等待时间了,如果线程还没执行完，说明此端口不可达。
}
}
str.Sort();
ResuleTextBox.Text += "开放端口： ";
for (int k = ; k < str.Count; k++)
ResuleTextBox.Text += str[k] + " ";
ResuleTextBox.Text += "\n";
}
ScanResultlistBox.Items[ScanResultlistBox.Items.Count - ].EnsureVisible();
if (isrun == true)
{
MessageBox.Show("扫描完成");
progressBar.Value = progressBar.Minimum;
startScanbutton.Enabled = true;
stopScanbutton.Enabled = false;
isrun = false;
}
else
{
MessageBox.Show("扫描终止");
startScanbutton.Enabled = true;
stopScanbutton.Enabled = false;
progressBar.Value = progressBar.Minimum;
isrun = false;
} }
public string State(int i)
{
str.Sort();
for (int k = ; k < str.Count; k++)
{
string s = str[k];
if (Convert.ToString(i) == s)
return "Open";
}
return "Closed";
}
public string Service(int i)
{
switch (i)
{ case :
return "HTTP协议代理服务";
case :
return "DCE endpoint resolutionnetbios-ns";
case :
return "安全服务";
case :
return "NetSpy.698(YAI)"; case :
return "HTTP协议代理服务"; case :
return "HTTP协议代理服务"; case :
return "HTTP协议代理服务"; case :
return "HTTP协议代理服务"; case :
return "SOCKS代理协议服务"; case :
return "FTP(文件传输)协议代理服务"; case :
return "Telnet(远程登录)协议代理服务"; case :
return "HTTPS协议代理服务"; case :
return "TFTP协议代理服务"; case :
return "SSH、SCP、端口重定向协议代理服务"; case :
return "SMTP协议代理服务"; case :
return "POP3协议代理服务";
default:
return "Unknow Servies"; }
} public void Scan(object Point)
{
IPEndPoint IPPoint = (IPEndPoint)Point;
try
{
TcpClient tcp = new TcpClient();
tcp.Connect(IPPoint);
if (tcp.Connected)
str.Add(Convert.ToString(IPPoint.Port));
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
}
}
好了，大家最后，可能都会说，我不想设计，也不想开发，我想要现成的怎么办？当然了，最后附上程序，大家可以实际进行测试使用。
工具链接：http://download.csdn.net/detail/dwx1005526886/9808540