1 // 2 // Copyright (c) 2013-2017 Carsten Sonne Larsen <cs@innolan.net> 3 // 4 // Permission is hereby granted, free of charge, to any person obtaining a copy 5 // of this software and associated documentation files (the "Software"), to deal 6 // in the Software without restriction, including without limitation the rights 7 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 8 // copies of the Software, and to permit persons to whom the Software is 9 // furnished to do so, subject to the following conditions: 10 // 11 // The above copyright notice and this permission notice shall be included in 12 // all copies or substantial portions of the Software. 13 // 14 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 17 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 18 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 19 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 20 // THE SOFTWARE. 21 22 using System; 23 using System.Diagnostics; 24 using System.Net; 25 using System.Net.Sockets; 26 using System.Text; 27 using Ntp.Common.Process; 28 29 namespace Ntp.Analyzer.Monitor.Client 30 { 31 public sealed class TextRequest : Request, IRequest 32 { TextRequest(IPAddress ip, int port)33 public TextRequest(IPAddress ip, int port) 34 : base(ip, port) 35 { 36 } 37 TextRequest(IPEndPoint server)38 public TextRequest(IPEndPoint server) 39 : base(server) 40 { 41 } 42 43 private StringBuilder result; 44 Send(string command)45 public string Send(string command) 46 { 47 var clientSocket = new Socket( 48 AddressFamily.InterNetwork, 49 SocketType.Stream, 50 ProtocolType.Tcp); 51 52 try 53 { 54 IAsyncResult conRes = clientSocket.BeginConnect(Server, null, null); 55 bool success = conRes.AsyncWaitHandle.WaitOne(3000, true); 56 57 if (!success) 58 { 59 throw new ApplicationException("Failed to connect to server."); 60 } 61 62 byte[] sendBuffer = Encoding.UTF8.GetBytes(command); 63 64 SocketError error; 65 clientSocket.Send(sendBuffer, 0, sendBuffer.Length, SocketFlags.None, out error); 66 67 const int size = 4096; 68 69 result = new StringBuilder(4096); 70 var buffer = new byte[size]; 71 72 int length; 73 74 do 75 { 76 length = clientSocket.Receive(buffer, 0, size, SocketFlags.None, out error); 77 string response = Encoding.ASCII.GetString(buffer); 78 response = response.Substring(0, length); 79 result.Append(response); 80 } while (length > 0); 81 82 return result.ToString(); 83 } 84 catch (Exception ex) 85 { 86 Debug.WriteLine(ex.Message); 87 return "Failed to connect to server."; 88 } 89 finally 90 { 91 if (clientSocket.IsBound) 92 clientSocket.Shutdown(SocketShutdown.Both); 93 94 clientSocket.Close(); 95 } 96 } 97 } 98 }