TCP传输一例

//TCP传输一例 namespace QQ_HSG { using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; using System.Net.Sockets; using System.Net; using System.Threading; using System.Net.NetworkInformation; using System.Runtime.Serialization.Formatters.Binary; using System.IO; /// <summary> /// QQ_HSG主界面 /// </summary> public partial class frmQQMain : Form { private TcpClient tcpc = new TcpClient(); private IPAddress ipAddress = null; private string SendHostName=""; //发送目标主机 private int Sendport = 5679; //发送目标port private int Linsterport=5679; //监听本地port private int FilePort = 5680; //文件传输port private Thread LinsterThread = null; private TcpListener listener = null; private string LocalHostName=""; public frmQQMain() { InitializeComponent(); } //发送消息 private void Btn_Send_Click(object sender, EventArgs e) { this.SendHostName = this.TB_SendHostName.Text; string tmp_hostname = this.SendHostName; int tmp_Sendport = this.Sendport; string sendmsg = this.TB_SendMsg.Text; try { this.ipAddress = Dns.Resolve(tmp_hostname).AddressList[0]; TcpClient tcpc = new TcpClient(); tcpc.Connect(ipAddress, tmp_Sendport); //Conect(IP:5679) Socket clientSocket = tcpc.Client; //封装消息 //----------- string localMsg = "发送者：" + Dns.GetHostName() + "/r/n"; localMsg += sendmsg ; //UnicodeEncoding encoder = new UnicodeEncoding(); //byte[] buffer = encoder.GetBytes(localMsg); //clientSocket.Send(buffer, buffer.Length, 0); //----------- QQMessage qqmsg = new QQMessage(); qqmsg.msgtype = MsgType.Msg; qqmsg.SendIP = ""; qqmsg.SendPort = tmp_Sendport; qqmsg.RetIP = ipAddress.ToString(); qqmsg.RetPort = tmp_Sendport; qqmsg.Message = localMsg; //序列化对象qqmsg System.IO.MemoryStream memStream = new System.IO.MemoryStream(); BinaryFormatter binary = new BinaryFormatter(); binary.Serialize(memStream, qqmsg); byte[] buffer = memStream.GetBuffer(); memStream.Close(); //UnicodeEncoding encoder = new UnicodeEncoding(); //byte[] buffer = encoder.GetBytes(localMsg); clientSocket.Send(buffer, buffer.Length, 0); //clientSocket.Close(); //FileStream stream = new System.IO.FileStream(FileName, System.IO.FileMode.Create); //BinaryFormatter binary = new BinaryFormatter(); //binary.Serialize(stream, points); //stream.Close(); //FileStream stream = new FileStream(FileName,System.IO.FileMode.Open); //BinaryFormatter binary = new BinaryFormatter(); //points = checked((ArrayList)(binary.Deserialize(stream))); //stream.Close(); //Graphics g = this.CreateGraphics(); //Draw(g); if (this.LocalHostName.ToUpper() != this.SendHostName.ToUpper()) { this.TB_MSG.AppendText(localMsg); } } catch (Exception ee) { MessageBox.Show(ee.ToString(), "提示"); } finally { } } private void frmQQMain_Load(object sender, EventArgs e) { this.LocalHostName=Dns.GetHostName(); this.initTreeViewUsers(); this.OnDisplayMessageEvent += new OnDisplayMessageDelegate(frmQQMain_OnDisplayMessageEvent); //本地自动接收消息线程 ThreadStart tmpThreadStart=new ThreadStart(LinsterMessageLoop); this.LinsterThread = new Thread(tmpThreadStart); this.LinsterThread.Start(); } private void frmQQMain_OnDisplayMessageEvent(string Msg) { this.TB_MSG.AppendText(Msg); } //Loop 监听消息并显示到消息框列表中 OK private void LinsterMessageLoop() { try { byte[] bytes = new byte[3162112]; //接收2M bytes大小数 据(注2048=2K;112048=109K ;2097152=2048K=2M) string data = null; //开始监听本地的port端口 string LocalHost = Dns.GetHostName(); //"localhost" IPAddress ipAddress = Dns.Resolve(LocalHost).AddressList[0]; listener = new TcpListener(ipAddress, this.Linsterport); listener.Start(); while (true) { string ttmsg = "/r/n正在接收挂起的连接请求.../r/n"; //this.Invoke(OnDisplayMessageEvent, new object[] { ttmsg }); //接收挂起的连接请求 TcpClient client = listener.AcceptTcpClient(); // Get a stream object for reading and writing NetworkStream stream = client.GetStream(); int i; i = stream.Read(bytes, 0, bytes.Length); // Translate data bytes to a ASCII string. data = System.Text.Encoding.Unicode.GetString(bytes, 0, bytes.Length); ttmsg = data + "/r/n"; //this.Invoke(OnDisplayMessageEvent, new object[] { ttmsg }); //反序列化对象为内存对象 System.IO.MemoryStream MemStream = new System.IO.MemoryStream(bytes); BinaryFormatter binary = new BinaryFormatter(); QQMessage qqmsg = checked((QQMessage) (binary.Deserialize(MemStream))); MemStream.Close(); if(qqmsg.msgtype== MsgType.Msg) { this.Invoke(OnDisplayMessageEvent, new object[] { qqmsg.Message.ToString() }); } if (qqmsg.msgtype == MsgType.File) { //接收文件 2M大小 string FileName = "C://QQmsg.txt"; FileName="C://QQmsg"+qqmsg.fileEx; FileStream filestream = new FileStream(FileName, System.IO.FileMode.OpenOrCreate); Byte[] byteArray=qqmsg.Message as Byte[]; filestream.Write(byteArray, 0, byteArray.Length); filestream.Flush(); filestream.Close(); } //发回一个消息，表示接收完成 // Send back a response. //string retdata = "true"; //byte[] msg = System.Text.Encoding.Unicode.GetBytes(retdata); //stream.Write(msg, 0, msg.Length); //// Loop to receive all the data sent by the client. //while ((i = stream.Read(bytes, 0, bytes.Length)) != 0) //{ // // Translate data bytes to a ASCII string. // data = System.Text.Encoding.Unicode.GetString(bytes, 0, i); // ttmsg = data + "/r/n"; // this.Invoke(OnDisplayMessageEvent, new object[] { ttmsg }); // //发回一个消息，表示接收完成 // // Send back a response. // string retdata = "true"; // byte[] msg = System.Text.Encoding.Unicode.GetBytes(retdata); // stream.Write(msg, 0, msg.Length); //} // Shutdown and end connection client.Close(); } } catch (SocketException ex) { Console.WriteLine(ex.Message); } } private event OnDisplayMessageDelegate OnDisplayMessageEvent=null; private void StopListener() { if (listener != null) { listener.Stop(); } } public delegate void OnDisplayMessageDelegate(string Msg); private void frmQQMain_FormClosing(object sender, FormClosingEventArgs e) { this.StopListener(); } private static List<string> UserList = new List<string>(); private static object synObj = new object(); //初始化获取本局域网内的工作组及工作组内的用户列表 private void initTreeViewUsers() { this.treeViewUsers.Nodes.Clear(); IPHostEntry he=Dns.GetHostEntry(Dns.GetHostName()); IPAddress[] ipAddArray = he.AddressList; string ipStr = ""; foreach (IPAddress ip in ipAddArray) { ipStr= ip.ToString(); string[] ipItemArray = ipStr.Split(new char[] { '.' }); List<PingManager> PMList = new List<PingManager>(); if (ipItemArray.Length >= 4) { string PreIP = ipItemArray[0] + "." + ipItemArray[1] + "." + ipItemArray[2]; for (int i = 1; i <= 255; i++) { string newIP = PreIP + "." + i.ToString(); try { PingManager pm = new PingManager(); pm.ip = newIP; ThreadStart ts = new ThreadStart(pm.Ping); Thread th = new Thread(ts); th.Start(); PMList.Add(pm); //wait while (PMList.Count >=10) { Thread.Sleep(10); for(int index=PMList.Count-1;index>=0;index--) { if(PMList[index].Executed == true) { PMList.RemoveAt(index); } } } } catch (Exception ee) { System.Diagnostics.Debug.WriteLine(ee.Message); } } //wait while (PMList.Count >0) { Thread.Sleep(10); for (int index = PMList.Count - 1; index >=0; index--) { if (PMList[index].Executed == true) { PMList.RemoveAt(index); } } } UserList = PingManager.UserList; } } UserList.Sort(); TreeNode TopTn = new TreeNode("用户列表"); this.treeViewUsers.Nodes.Add(TopTn); foreach (string user in UserList) { TopTn.Nodes.Add(user); } } public class PingManager { public static List<string> UserList = new List<string>(); private static object synObj = new object(); public string ip = ""; public bool IsSucced = false; public bool Executed = false; public void Ping(string ip) { string who = ip;// args[0]; Ping pingSender = new Ping(); // Create a buffer of 32 bytes of data to be transmitted. string data = "a"; byte[] buffer = Encoding.ASCII.GetBytes(data); int timeout = 200; PingOptions options = new PingOptions(64, true); PingReply reply = pingSender.Send(who, timeout, buffer, options); if (reply != null && reply.Status == IPStatus.Success) { lock (synObj) { if (UserList.Contains(reply.Address.ToString()) == false) { UserList.Add(reply.Address.ToString()); } IsSucced = true; } } pingSender.Dispose(); Executed = true; } public void Ping() { string who = ip;// args[0]; this.Ping(who); } } private void treeViewUsers_AfterSelect(object sender, TreeViewEventArgs e) { this.TB_SendHostName.Text = e.Node.Text; } //发送文件 OK private void Btn_SendFile_Click(object sender, EventArgs e) { OpenFileDialog ofd = new OpenFileDialog(); ofd.Multiselect = false; if (ofd.ShowDialog() == DialogResult.OK) { string filepath=ofd.FileName; this.SendHostName = this.TB_SendHostName.Text; string tmp_hostname = this.SendHostName; int tmp_Sendport = this.Sendport; string sendmsg = this.TB_SendMsg.Text; try { this.ipAddress = Dns.Resolve(tmp_hostname).AddressList[0]; TcpClient tcpc = new TcpClient(); tcpc.Connect(ipAddress, tmp_Sendport); //Conect(IP:5679) Socket clientSocket = tcpc.Client; //封装消息 //----------- string localMsg = "发送者：" + Dns.GetHostName() + "/r/n"; localMsg += sendmsg; //UnicodeEncoding encoder = new UnicodeEncoding(); //byte[] buffer = encoder.GetBytes(localMsg); //clientSocket.Send(buffer, buffer.Length, 0); //----------- QQMessage qqmsg = new QQMessage(); qqmsg.msgtype = MsgType.File; qqmsg.SendIP = ""; qqmsg.SendPort = tmp_Sendport; qqmsg.RetIP = ipAddress.ToString(); qqmsg.RetPort = tmp_Sendport; qqmsg.Message = localMsg; qqmsg.filename = filepath; qqmsg.fileEx = System.IO.Path.GetExtension(filepath); //获取File的Byte[] System.IO.FileStream fileStream = new System.IO.FileStream(filepath, FileMode.Open); byte[] bufferFile = new byte[2097152]; fileStream.Read(bufferFile, 0, (int)fileStream.Length); fileStream.Close(); qqmsg.Message = bufferFile; //序列化对象qqmsg System.IO.MemoryStream memStream = new System.IO.MemoryStream(); BinaryFormatter binary = new BinaryFormatter(); binary.Serialize(memStream, qqmsg); byte[] buffer = memStream.GetBuffer(); memStream.Close(); clientSocket.Send(buffer, buffer.Length, 0); if (this.LocalHostName.ToUpper() != this.SendHostName.ToUpper()) { this.TB_MSG.AppendText("已发送文件："+filepath); } } catch (Exception ee) { MessageBox.Show(ee.ToString(), "提示"); } finally { } } }// } /// <summary> /// 能序列化对类 /// </summary> [Serializable] public struct QQMessage { public string SendIP; public int SendPort; public string RetIP; public int RetPort; public object Message; public object Ex1; public object Ex2; public int index; public string filename; public string fileEx; public MsgType msgtype; } [Serializable] public enum MsgType { Msg=0, File=0, Bin=0, } }