/// <summary> /// This method get the Packet and calculates the total size /// of the Pack by converting it to byte array /// </summary> public static Int32 Serialize(IcmpPacket packet, Byte [] Buffer, Int32 PacketSize, Int32 PingData) { Int32 cbReturn = 0; // serialize the struct into the array int Index = 0; Byte [] b_type = new Byte[1]; b_type[0] = (packet.Type); Byte [] b_code = new Byte[1]; b_code[0] = (packet.SubCode); Byte [] b_cksum = BitConverter.GetBytes(packet.CheckSum); Byte [] b_id = BitConverter.GetBytes(packet.Identifier); Byte [] b_seq = BitConverter.GetBytes(packet.SequenceNumber); // Console.WriteLine("Serialize type "); Array.Copy(b_type, 0, Buffer, Index, b_type.Length); Index += b_type.Length; // Console.WriteLine("Serialize code "); Array.Copy(b_code, 0, Buffer, Index, b_code.Length); Index += b_code.Length; // Console.WriteLine("Serialize cksum "); Array.Copy(b_cksum, 0, Buffer, Index, b_cksum.Length); Index += b_cksum.Length; // Console.WriteLine("Serialize id "); Array.Copy(b_id, 0, Buffer, Index, b_id.Length); Index += b_id.Length; Array.Copy(b_seq, 0, Buffer, Index, b_seq.Length); Index += b_seq.Length; // copy the data Array.Copy(packet.Data, 0, Buffer, Index, PingData); Index += PingData; if (Index != PacketSize /* sizeof(IcmpPacket) */) { cbReturn = -1; return(cbReturn); } cbReturn = Index; return(cbReturn); }
/// <summary> /// This method get the Packet and calculates the total size /// of the Pack by converting it to byte array /// </summary> public static Int32 Serialize( IcmpPacket packet, Byte [] Buffer, Int32 PacketSize, Int32 PingData ) { Int32 cbReturn = 0; // serialize the struct into the array int Index=0; Byte [] b_type = new Byte[1]; b_type[0] = (packet.Type); Byte [] b_code = new Byte[1]; b_code[0] = (packet.SubCode); Byte [] b_cksum = BitConverter.GetBytes(packet.CheckSum); Byte [] b_id = BitConverter.GetBytes(packet.Identifier); Byte [] b_seq = BitConverter.GetBytes(packet.SequenceNumber); // Console.WriteLine("Serialize type "); Array.Copy( b_type, 0, Buffer, Index, b_type.Length ); Index += b_type.Length; // Console.WriteLine("Serialize code "); Array.Copy( b_code, 0, Buffer, Index, b_code.Length ); Index += b_code.Length; // Console.WriteLine("Serialize cksum "); Array.Copy( b_cksum, 0, Buffer, Index, b_cksum.Length ); Index += b_cksum.Length; // Console.WriteLine("Serialize id "); Array.Copy( b_id, 0, Buffer, Index, b_id.Length ); Index += b_id.Length; Array.Copy( b_seq, 0, Buffer, Index, b_seq.Length ); Index += b_seq.Length; // copy the data Array.Copy( packet.Data, 0, Buffer, Index, PingData ); Index += PingData; if( Index != PacketSize/* sizeof(IcmpPacket) */) { cbReturn = -1; return cbReturn; } cbReturn = Index; return cbReturn; }
/// <summary> /// This method takes the "hostname" of the server /// and then it ping's it and shows the response time /// </summary> public static PingResponse PingHost(string host) { //Declare the IPHostEntry PingResponse pr = new PingResponse(); IPHostEntry serverHE, fromHE; int nBytes = 0; int dwStart = 0, dwStop = 0; //Initilize a Socket of the Type ICMP Socket socket= new Socket(AddressFamily.InterNetwork, SocketType.Raw, ProtocolType.Icmp); // Get the server endpoint try { serverHE = System.Net.Dns.GetHostByName(host); } catch(Exception) { pr.Error="Host not found"; // fail pr.HasError=true; return pr; } // Convert the server IP_EndPoint to an EndPoint IPEndPoint ipepServer = new IPEndPoint(serverHE.AddressList[0], 0); EndPoint epServer = (ipepServer); pr.Host=epServer.ToString(); // Set the receiving endpoint to the client machine fromHE = System.Net.Dns.GetHostByName(System.Net.Dns.GetHostName()); IPEndPoint ipEndPointFrom = new IPEndPoint(fromHE.AddressList[0], 0); EndPoint EndPointFrom = (ipEndPointFrom); int PacketSize = 0; IcmpPacket packet = new IcmpPacket(); // Construct the packet to send packet.Type = ICMP_ECHO; //8 packet.SubCode = 0; packet.CheckSum = UInt16.Parse("0"); packet.Identifier = UInt16.Parse("45"); packet.SequenceNumber = UInt16.Parse("0"); int PingData = 32; // sizeof(IcmpPacket) - 8; packet.Data = new Byte[PingData]; //Initilize the Packet.Data for (int i = 0; i < PingData; i++) { packet.Data[i] = (byte)'#'; } //Variable to hold the total Packet size PacketSize = PingData + 8; Byte [] icmp_pkt_buffer = new Byte[ PacketSize ]; Int32 Index = 0; //Call a Methos Serialize which counts //The total number of Bytes in the Packet Index = Serialize( packet, icmp_pkt_buffer, PacketSize, PingData ); //Error in Packet Size if( Index == -1 ) { pr.Error="Error in Making Packet"; // fail pr.HasError=true; return pr; } // now get this critter into a UInt16 array //Get the Half size of the Packet Double double_length = Convert.ToDouble(Index); Double dtemp = Math.Ceiling( double_length / 2); int cksum_buffer_length = Convert.ToInt32(dtemp); //Create a Byte Array UInt16 [] cksum_buffer = new UInt16[cksum_buffer_length]; //Code to initilize the Uint16 array int icmp_header_buffer_index = 0; for( int i = 0; i < cksum_buffer_length; i++ ) { cksum_buffer[i] = BitConverter.ToUInt16(icmp_pkt_buffer,icmp_header_buffer_index); icmp_header_buffer_index += 2; } //Call a method which will return a checksum UInt16 u_cksum = checksum(cksum_buffer, cksum_buffer_length); //Save the checksum to the Packet packet.CheckSum = u_cksum; // Now that we have the checksum, serialize the packet again Byte [] sendbuf = new Byte[ PacketSize ]; //again check the packet size Index = Serialize( packet, sendbuf, PacketSize, PingData ); //if there is a error report it if( Index == -1 ) { pr.Error="Error in Making Packet"; // fail pr.HasError=true; return pr; } dwStart = System.Environment.TickCount; // Start timing //send the Pack over the socket if ((nBytes = socket.SendTo(sendbuf, PacketSize, 0, epServer)) == SOCKET_ERROR) { return null; } // Initialize the buffers. The receive buffer is the size of the // ICMP header plus the IP header (20 bytes) Byte [] ReceiveBuffer = new Byte[256]; nBytes = 0; //Receive the bytes recd =false ; int timeout=0 ; //loop for checking the time of the server responding StateObject stateObject = new StateObject(256, socket); System.IAsyncResult asyncReceive = socket.BeginReceiveFrom(stateObject.sBuffer, 0, stateObject.sBuffer.Length, System.Net.Sockets.SocketFlags.None, ref EndPointFrom, new System.AsyncCallback(ReceiveFromCallBack),stateObject); writeDot(asyncReceive); while(timeout<=Timeout && !recd) {//go only for 10 seconds System.Threading.Thread.Sleep(1000); timeout++; } if(recd) { if(stateObject.sBuffer.Length>0) { dwStop = System.Environment.TickCount - dwStart; // stop timing pr.Duration=dwStop; pr.BytesReceived=stateObject.sBuffer.Length; pr.HasError=false; //Console.WriteLine("Reply from "+epServer.ToString()+" in "+dwStop+"MS :Bytes Received"+nBytes); } else { dwStop = System.Environment.TickCount - dwStart; // stop timing pr.Duration=dwStop; pr.BytesReceived=0; pr.HasError=true; pr.Error="Time Out"; //Console.WriteLine("Reply from "+epServer.ToString()+" in "+dwStop+"MS :Bytes Received"+nBytes); } } else { dwStop = System.Environment.TickCount - dwStart; // stop timing pr.Duration=dwStop; pr.BytesReceived=0; pr.HasError=true; pr.Error="Time Out"; //Console.WriteLine("Reply from "+epServer.ToString()+" in "+dwStop+"MS :Bytes Received"+nBytes); } recd=false; #region old /* while(!recd) { nBytes = socket.ReceiveFrom(ReceiveBuffer, 256, 0, ref EndPointFrom); if (nBytes == SOCKET_ERROR) { pr.BytesReceived=nBytes; pr.Duration=dwStop; pr.HasError=true; pr.Error="Host not Responding"; recd=true ; break; } else if(nBytes>0) { dwStop = System.Environment.TickCount - dwStart; // stop timing pr.Duration=dwStop; pr.BytesReceived=nBytes; pr.HasError=false; //Console.WriteLine("Reply from "+epServer.ToString()+" in "+dwStop+"MS :Bytes Received"+nBytes); recd=true; break; } timeout=System.Environment.TickCount - dwStart; if(timeout>1000) { pr.BytesReceived=nBytes; pr.Duration=dwStop; pr.HasError=true; pr.Error="Time Out"; //Console.WriteLine("Time Out") ; recd=true; break; } } */ #endregion //close the socket socket.Close(); return pr; }
/// <summary> /// This method takes the "hostname" of the server /// and then it ping's it and shows the response time /// </summary> public static PingResponse PingHost(string host) { //Declare the IPHostEntry PingResponse pr = new PingResponse(); IPHostEntry serverHE, fromHE; int nBytes = 0; int dwStart = 0, dwStop = 0; //Initilize a Socket of the Type ICMP Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Raw, ProtocolType.Icmp); // Get the server endpoint try { serverHE = System.Net.Dns.GetHostByName(host); } catch (Exception) { pr.Error = "Host not found"; // fail pr.HasError = true; return(pr); } // Convert the server IP_EndPoint to an EndPoint IPEndPoint ipepServer = new IPEndPoint(serverHE.AddressList[0], 0); EndPoint epServer = (ipepServer); pr.Host = epServer.ToString(); // Set the receiving endpoint to the client machine fromHE = System.Net.Dns.GetHostByName(System.Net.Dns.GetHostName()); IPEndPoint ipEndPointFrom = new IPEndPoint(fromHE.AddressList[0], 0); EndPoint EndPointFrom = (ipEndPointFrom); int PacketSize = 0; IcmpPacket packet = new IcmpPacket(); // Construct the packet to send packet.Type = ICMP_ECHO; //8 packet.SubCode = 0; packet.CheckSum = UInt16.Parse("0"); packet.Identifier = UInt16.Parse("45"); packet.SequenceNumber = UInt16.Parse("0"); int PingData = 32; // sizeof(IcmpPacket) - 8; packet.Data = new Byte[PingData]; //Initilize the Packet.Data for (int i = 0; i < PingData; i++) { packet.Data[i] = (byte)'#'; } //Variable to hold the total Packet size PacketSize = PingData + 8; Byte [] icmp_pkt_buffer = new Byte[PacketSize]; Int32 Index = 0; //Call a Methos Serialize which counts //The total number of Bytes in the Packet Index = Serialize( packet, icmp_pkt_buffer, PacketSize, PingData); //Error in Packet Size if (Index == -1) { pr.Error = "Error in Making Packet"; // fail pr.HasError = true; return(pr); } // now get this critter into a UInt16 array //Get the Half size of the Packet Double double_length = Convert.ToDouble(Index); Double dtemp = Math.Ceiling(double_length / 2); int cksum_buffer_length = Convert.ToInt32(dtemp); //Create a Byte Array UInt16 [] cksum_buffer = new UInt16[cksum_buffer_length]; //Code to initilize the Uint16 array int icmp_header_buffer_index = 0; for (int i = 0; i < cksum_buffer_length; i++) { cksum_buffer[i] = BitConverter.ToUInt16(icmp_pkt_buffer, icmp_header_buffer_index); icmp_header_buffer_index += 2; } //Call a method which will return a checksum UInt16 u_cksum = checksum(cksum_buffer, cksum_buffer_length); //Save the checksum to the Packet packet.CheckSum = u_cksum; // Now that we have the checksum, serialize the packet again Byte [] sendbuf = new Byte[PacketSize]; //again check the packet size Index = Serialize( packet, sendbuf, PacketSize, PingData); //if there is a error report it if (Index == -1) { pr.Error = "Error in Making Packet"; // fail pr.HasError = true; return(pr); } dwStart = System.Environment.TickCount; // Start timing //send the Pack over the socket if ((nBytes = socket.SendTo(sendbuf, PacketSize, 0, epServer)) == SOCKET_ERROR) { return(null); } // Initialize the buffers. The receive buffer is the size of the // ICMP header plus the IP header (20 bytes) Byte [] ReceiveBuffer = new Byte[256]; nBytes = 0; //Receive the bytes recd = false; int timeout = 0; //loop for checking the time of the server responding StateObject stateObject = new StateObject(256, socket); System.IAsyncResult asyncReceive = socket.BeginReceiveFrom(stateObject.sBuffer, 0, stateObject.sBuffer.Length, System.Net.Sockets.SocketFlags.None, ref EndPointFrom, new System.AsyncCallback(ReceiveFromCallBack), stateObject); writeDot(asyncReceive); while (timeout <= Timeout && !recd) //go only for 10 seconds { System.Threading.Thread.Sleep(1000); timeout++; } if (recd) { if (stateObject.sBuffer.Length > 0) { dwStop = System.Environment.TickCount - dwStart; // stop timing pr.Duration = dwStop; pr.BytesReceived = stateObject.sBuffer.Length; pr.HasError = false; //Console.WriteLine("Reply from "+epServer.ToString()+" in "+dwStop+"MS :Bytes Received"+nBytes); } else { dwStop = System.Environment.TickCount - dwStart; // stop timing pr.Duration = dwStop; pr.BytesReceived = 0; pr.HasError = true; pr.Error = "Time Out"; //Console.WriteLine("Reply from "+epServer.ToString()+" in "+dwStop+"MS :Bytes Received"+nBytes); } } else { dwStop = System.Environment.TickCount - dwStart; // stop timing pr.Duration = dwStop; pr.BytesReceived = 0; pr.HasError = true; pr.Error = "Time Out"; //Console.WriteLine("Reply from "+epServer.ToString()+" in "+dwStop+"MS :Bytes Received"+nBytes); } recd = false; #region old /* * while(!recd) { * * nBytes = socket.ReceiveFrom(ReceiveBuffer, 256, 0, ref EndPointFrom); * if (nBytes == SOCKET_ERROR) { * pr.BytesReceived=nBytes; * pr.Duration=dwStop; * pr.HasError=true; * pr.Error="Host not Responding"; * recd=true ; * break; * } * else if(nBytes>0) { * dwStop = System.Environment.TickCount - dwStart; // stop timing * pr.Duration=dwStop; * pr.BytesReceived=nBytes; * pr.HasError=false; * //Console.WriteLine("Reply from "+epServer.ToString()+" in "+dwStop+"MS :Bytes Received"+nBytes); * recd=true; * break; * } * timeout=System.Environment.TickCount - dwStart; * if(timeout>1000) { * pr.BytesReceived=nBytes; * pr.Duration=dwStop; * pr.HasError=true; * pr.Error="Time Out"; * //Console.WriteLine("Time Out") ; * recd=true; * break; * } * * } */ #endregion //close the socket socket.Close(); return(pr); }