c＃代码中的网络跟踪路由 [英] network trace route in c# code
问题描述
大家好！
i有一个网络traceroute的代码，但它无法正常工作。
程序返回无响应从远程主机错误消息，连续
有人可以帮助我吗？
代码：
string argv =217.20.130.97;
类ICMP
{
公共字节类型;
public byte Code;
public UInt16 Checksum;
public int MessageSize;
public byte [] Message = new byte [1024 ];
公共ICMP（）
{
}
公共ICMP（byte []数据，int size ）
{
类型=数据[20];
代码=数据[21];
校验和= BitConverter.ToUInt16（data，22）;
MessageSize = size - 24;
Buffer.BlockCopy（data，24，Message，0，MessageSize）;
}
public byte [] getBytes（）
{
byte [] data = new byte [MessageSize + 9];
Buffer.BlockCopy（BitConverter.GetBytes（Type），0，data，0,1）;
Buffer.BlockCopy（BitConverter.GetBytes（Code），0，data，1,1）;
Buffer.BlockCopy（BitConverter.GetBytes（Checksum），0，data，2， 2）;
Buffer.BlockCopy（消息，0，数据，4，MessageSize）;
返回数据;
}
public UInt16 getChecksum（）
{
UInt32 chcksm = 0;
byte [] data = getBytes（）;
int packetsize = MessageSize + 8;
int index = 0;
while（index<数据包）
{
chcksm + = Convert.ToUInt32（BitConverter.ToUInt16（data，index））;
index + = 2;
}
chcksm =（chcksm>> 16）+（chcksm& 0xffff）;
chcksm + =（chcksm>> ; 16）;
返回（UInt16）（~chcksm）;
}
}
byte [] data = new byte [1024];
int recv ，timestart，timestop;
套接字主机=新套接字（AddressFamily.InterNetwork，
SocketType.Raw，ProtocolType.Icmp）;
IPEndPoint iep =新IPEndPoint（IPAddress.Parse（argv），0）;
EndPoint ep =（ EndPoint）iep;
ICMP包=新ICMP（）;
packet.Type = 0x08;
packet.Code = 0x00;
packet.Checksum = 0;
Buffer.BlockCopy（BitConverter。 GetBytes（1），0，packet.Message，0,2）;
Buffer.BlockCopy（BitConverter.GetBytes（1），0，packet.Message，2,2）;
data = Encoding.ASCII.GetBytes（test packet）;
Buffer.BlockCopy（data，0，packet.Message，4，data.Length）;
packet.MessageSize = data.Length + 4;
int packetsize = packet.MessageSize + 4;
UInt16 chcksum = packet.getChecksum（）;
packet.Checksum = chcksum;
host.SetSocketOption（SocketOptionLevel.Socket，
SocketOptionName.ReceiveTimeout，3000）;
int badcount = 0;
for（int i = 1;我< 50; i ++）
{
host.SetSocketOption（SocketOptionLevel.IP，
SocketOptionName.IpTimeToLive，i）;
timestart = Environment.TickCount;
host.SendTo（packet.getBytes（），packetsize，SocketFlags.None，iep）;
试试
{
data = new byte [1024];
recv = host.ReceiveFrom（data，ref ep）;
timestop = Environment.TickCount;
ICMP响应=新ICMP（数据，recv）;
if（response.Type == 11）
label1.Text = label1.Text +\ n\\\
hop：ms的响应+ i + ep.ToString（）+（timestop - timestart）.ToString（）;
if（response.Type == 0）
{
label1.Text = label1.Text +\ n \ n在hops中到达，ms。 + ep.ToString（）+ i +（timestop - timestart）.ToString（）;
break;
}
badcount = 0;
}
catch（SocketException）
{
label2.Text =\ nhop：没有来自远程主机+ i;
badcount ++;
if（badcount == 5）
{
label2。 Text = label2.Text +\ n \\ n无法联系远程主机;
休息;
}
}
}
host.Close（）;
}
hi everyone!
i have a code for network traceroute, but it is not working.
the program return the "No response from remote host" error message, continuously
can anybody help me?
The code:
string argv = "217.20.130.97";
class ICMP
{
public byte Type;
public byte Code;
public UInt16 Checksum;
public int MessageSize;
public byte[] Message = new byte[1024];
public ICMP()
{
}
public ICMP(byte[] data, int size)
{
Type = data[20];
Code = data[21];
Checksum = BitConverter.ToUInt16(data, 22);
MessageSize = size - 24;
Buffer.BlockCopy(data, 24, Message, 0, MessageSize);
}
public byte[] getBytes()
{
byte[] data = new byte[MessageSize + 9];
Buffer.BlockCopy(BitConverter.GetBytes(Type), 0, data, 0, 1);
Buffer.BlockCopy(BitConverter.GetBytes(Code), 0, data, 1, 1);
Buffer.BlockCopy(BitConverter.GetBytes(Checksum), 0, data, 2, 2);
Buffer.BlockCopy(Message, 0, data, 4, MessageSize);
return data;
}
public UInt16 getChecksum()
{
UInt32 chcksm = 0;
byte[] data = getBytes();
int packetsize = MessageSize + 8;
int index = 0;
while (index < packetsize)
{
chcksm += Convert.ToUInt32(BitConverter.ToUInt16(data, index));
index += 2;
}
chcksm = (chcksm >> 16) + (chcksm & 0xffff);
chcksm += (chcksm >> 16);
return (UInt16)(~chcksm);
}
}
byte[] data = new byte[1024];
int recv, timestart, timestop;
Socket host = new Socket(AddressFamily.InterNetwork,
SocketType.Raw, ProtocolType.Icmp);
IPEndPoint iep = new IPEndPoint(IPAddress.Parse(argv), 0);
EndPoint ep = (EndPoint)iep;
ICMP packet = new ICMP();
packet.Type = 0x08;
packet.Code = 0x00;
packet.Checksum = 0;
Buffer.BlockCopy(BitConverter.GetBytes(1), 0, packet.Message, 0, 2);
Buffer.BlockCopy(BitConverter.GetBytes(1), 0, packet.Message, 2, 2);
data = Encoding.ASCII.GetBytes("test packet");
Buffer.BlockCopy(data, 0, packet.Message, 4, data.Length);
packet.MessageSize = data.Length + 4;
int packetsize = packet.MessageSize + 4;
UInt16 chcksum = packet.getChecksum();
packet.Checksum = chcksum;
host.SetSocketOption(SocketOptionLevel.Socket,
SocketOptionName.ReceiveTimeout, 3000);
int badcount = 0;
for (int i = 1; i < 50; i++)
{
host.SetSocketOption(SocketOptionLevel.IP,
SocketOptionName.IpTimeToLive, i);
timestart = Environment.TickCount;
host.SendTo(packet.getBytes(), packetsize, SocketFlags.None, iep);
try
{
data = new byte[1024];
recv = host.ReceiveFrom(data, ref ep);
timestop = Environment.TickCount;
ICMP response = new ICMP(data, recv);
if (response.Type == 11)
label1.Text = label1.Text + "\n\nhop : response from ms" + i + ep.ToString() + (timestop - timestart).ToString();
if (response.Type == 0)
{
label1.Text = label1.Text + "\n\n reached in hops, ms." + ep.ToString() + i + (timestop - timestart).ToString();
break;
}
badcount = 0;
}
catch (SocketException)
{
label2.Text = "\nhop : No response from remote host" + i;
badcount++;
if (badcount == 5)
{
label2.Text = label2.Text + "\nUnable to contact remote host";
break;
}
}
}
host.Close();
}
推荐答案
hi everyone!
i have a code for network traceroute, but it is not working.
the program return the "No response from remote host" error message, continuously
can anybody help me?
The code:
string argv = "217.20.130.97";
class ICMP
{
public byte Type;
public byte Code;
public UInt16 Checksum;
public int MessageSize;
public byte[] Message = new byte[1024];
public ICMP()
{
}
public ICMP(byte[] data, int size)
{
Type = data[20];
Code = data[21];
Checksum = BitConverter.ToUInt16(data, 22);
MessageSize = size - 24;
Buffer.BlockCopy(data, 24, Message, 0, MessageSize);
}
public byte[] getBytes()
{
byte[] data = new byte[MessageSize + 9];
Buffer.BlockCopy(BitConverter.GetBytes(Type), 0, data, 0, 1);
Buffer.BlockCopy(BitConverter.GetBytes(Code), 0, data, 1, 1);
Buffer.BlockCopy(BitConverter.GetBytes(Checksum), 0, data, 2, 2);
Buffer.BlockCopy(Message, 0, data, 4, MessageSize);
return data;
}
public UInt16 getChecksum()
{
UInt32 chcksm = 0;
byte[] data = getBytes();
int packetsize = MessageSize + 8;
int index = 0;
while (index < packetsize)
{
chcksm += Convert.ToUInt32(BitConverter.ToUInt16(data, index));
index += 2;
}
chcksm = (chcksm >> 16) + (chcksm & 0xffff);
chcksm += (chcksm >> 16);
return (UInt16)(~chcksm);
}
}
byte[] data = new byte[1024];
int recv, timestart, timestop;
Socket host = new Socket(AddressFamily.InterNetwork,
SocketType.Raw, ProtocolType.Icmp);
IPEndPoint iep = new IPEndPoint(IPAddress.Parse(argv), 0);
EndPoint ep = (EndPoint)iep;
ICMP packet = new ICMP();
packet.Type = 0x08;
packet.Code = 0x00;
packet.Checksum = 0;
Buffer.BlockCopy(BitConverter.GetBytes(1), 0, packet.Message, 0, 2);
Buffer.BlockCopy(BitConverter.GetBytes(1), 0, packet.Message, 2, 2);
data = Encoding.ASCII.GetBytes("test packet");
Buffer.BlockCopy(data, 0, packet.Message, 4, data.Length);
packet.MessageSize = data.Length + 4;
int packetsize = packet.MessageSize + 4;
UInt16 chcksum = packet.getChecksum();
packet.Checksum = chcksum;
host.SetSocketOption(SocketOptionLevel.Socket,
SocketOptionName.ReceiveTimeout, 3000);
int badcount = 0;
for (int i = 1; i < 50; i++)
{
host.SetSocketOption(SocketOptionLevel.IP,
SocketOptionName.IpTimeToLive, i);
timestart = Environment.TickCount;
host.SendTo(packet.getBytes(), packetsize, SocketFlags.None, iep);
try
{
data = new byte[1024];
recv = host.ReceiveFrom(data, ref ep);
timestop = Environment.TickCount;
ICMP response = new ICMP(data, recv);
if (response.Type == 11)
label1.Text = label1.Text + "\n\nhop : response from ms" + i + ep.ToString() + (timestop - timestart).ToString();
if (response.Type == 0)
{
label1.Text = label1.Text + "\n\n reached in hops, ms." + ep.ToString() + i + (timestop - timestart).ToString();
break;
}
badcount = 0;
}
catch (SocketException)
{
label2.Text = "\nhop : No response from remote host" + i;
badcount++;
if (badcount == 5)
{
label2.Text = label2.Text + "\nUnable to contact remote host";
break;
}
}
}
host.Close();
}
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