Je développe deux application une application serveur et l'autre est pour l'appareil portatif application à la fois communiquer à l'aide de connexion sans fil.le client est portatif et le serveur est mon ordinateur où l'application serveur en cours d'exécution. quand j'envoie des fichiers du client au serveur il envoie parfaitement sans aucune erreur mais quand la demande du client pour les fichiers le serveur produit l'erreur quelque chose comme "Aucune connexion n'a pu être faite parce que la machine cible l'a activement refusée 192.168.1.5:9050"envoyer et recevoir des fichiers socket programmation
code côté serveur:
private bool SendData(string StrIP)
{
try
{
string strmyFile = Directory.GetCurrentDirectory() + "\\" + "XML" + @"\Login.xml";
char[] delimiter = splitter.ToCharArray();
split = strmyFile.Split(delimiter);
int limit = split.Length;
fName = split[limit - 1].ToString();
byte[] fileName = Encoding.UTF8.GetBytes(fName); //file name
byte[] fileData = File.ReadAllBytes(strmyFile); //file
using (FileStream stream = File.OpenRead(strmyFile))
{
fileData = new byte[stream.Length];
stream.Read(fileData, 0, fileData.Length);
}
byte[] fileNameLen = BitConverter.GetBytes(fileName.Length); //lenght of file name
clientData = new byte[4 + fileName.Length + fileData.Length];
fileNameLen.CopyTo(clientData, 0);
fileName.CopyTo(clientData, 4);
fileData.CopyTo(clientData, 4 + fileName.Length);
System.Net.IPAddress ipAdd = System.Net.IPAddress.Parse(StrIP);
try
{
Socket clientSock = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
IPEndPoint ipEnd = new IPEndPoint(ipAdd, 9050);
clientSock.Connect(ipEnd); //target machine's ip address and the port number
clientSock.Send(clientData);
clientSock.Close();
ind = 1;
//Socket Sock = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
//IPEndPoint ipEnd = new IPEndPoint(ipAdd, 9050);
//Sock.Bind(ipEnd);//target machine's ip address and the port number
//Sock.Listen(100);
//Socket clientSock = Sock.Accept();
//clientSock.Send(clientData);
//clientSock.Close();
//ind = 1;
}
catch (Exception ex)
{
req = false;
return false;
}
req = true;
}
catch (Exception ex)
{
}
return true;
}
public class StateObject
{
// Client socket.
public Socket workSocket = null;
public const int BufferSize = 1024 * 5000;
// Receive buffer.
public byte[] buffer = new byte[BufferSize];
}
public static ManualResetEvent allDone = new ManualResetEvent(false);
public void StartListening()
{
byte[] bytes = new Byte[1024 * 5000];
IPEndPoint ipEnd = new IPEndPoint(IPAddress.Any, 9050);
Socket listener = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
try
{
listener.Bind(ipEnd);
listener.Listen(100);
while (true)
{
allDone.Reset();
// string ip = listener.RemoteEndPoint.ToString();
listener.BeginAccept(new AsyncCallback(AcceptCallback), listener);
allDone.WaitOne();
}
}
catch (Exception ex)
{
}
}
public void AcceptCallback(IAsyncResult ar)
{
allDone.Set();
Socket listener = (Socket)ar.AsyncState;
Socket handler = listener.EndAccept(ar);
StateObject state = new StateObject();
state.workSocket = handler;
handler.BeginReceive(state.buffer, 0, StateObject.BufferSize, 0,
new AsyncCallback(ReadCallback), state);
flag = 0;
}
private bool req = false;
public void ReadCallback(IAsyncResult ar)
{
try
{
int fileNameLen = 1;
String content = String.Empty;
StateObject state = (StateObject)ar.AsyncState;
Socket handler = state.workSocket;
string[] str = new string[2];
str = handler.RemoteEndPoint.ToString().Split(':');
string path = Directory.GetCurrentDirectory() + "\\TEST\\" + str[0].ToString();
if (!Directory.Exists(path))
{
Directory.CreateDirectory(path);
}
if (req == false)
{
Sender snddata = new Sender();
snddata.sendme(str[0].ToString());
SendData(str[0].ToString());
}
int bytesRead = handler.EndReceive(ar);
if (bytesRead > 0)
{
if (flag == 0)
{
fileNameLen = BitConverter.ToInt32(state.buffer, 0);
string fileName = Encoding.UTF8.GetString(state.buffer, 4, fileNameLen);
receivedPath = Directory.GetCurrentDirectory() + "\\TEST\\" + str[0].ToString() + @"\" + fileName;
flag++;
}
if (flag >= 1)
{
BinaryWriter writer = new BinaryWriter(File.Open(receivedPath, FileMode.Append));
if (flag == 1)
{
writer.Write(state.buffer, 4 + fileNameLen, bytesRead - (4 + fileNameLen));
flag++;
}
else
writer.Write(state.buffer, 0, bytesRead);
writer.Close();
handler.BeginReceive(state.buffer, 0, StateObject.BufferSize, 0,
new AsyncCallback(ReadCallback), state);
}
}
else
{
Invoke(new MyDelegate(LabelWriter));
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
public class Sender
{
public void sendme(string strIP)
{
try
{
// MessageBox.Show("That program can transfer small file. I've test up to 850kb file");
IPEndPoint ipEnd = new IPEndPoint(IPAddress.Any, 9050);
Socket sock = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.IP);
sock.Bind(ipEnd);
sock.Listen(100);
while (true)
{
//clientSock is the socket object of client, so we can use it now to transfer data to client
Socket clientSock = sock.Accept();
string fileName = "Login.xml";// "Your File Name";
string filePath = Directory.GetCurrentDirectory() + "\\" + "XML" + @"\" ;//Your File Path;
byte[] fileNameByte = Encoding.ASCII.GetBytes(fileName);
byte[] fileData = File.ReadAllBytes(filePath + fileName);
byte[] clientData = new byte[4 + fileNameByte.Length + fileData.Length];
byte[] fileNameLen = BitConverter.GetBytes(fileNameByte.Length);
fileNameLen.CopyTo(clientData, 0);
fileNameByte.CopyTo(clientData, 4);
fileData.CopyTo(clientData, 4 + fileNameByte.Length);
clientSock.Send(clientData);
//MessageBox.Show("File:{0} has been sent." + fileName);
}
//sock.Shutdown(SocketShutdown.Both);
//sock.Close();
// Console.ReadLine();
//sendme();
}
catch (Exception ex)
{
MessageBox.Show("File Receiving fail." + ex.Message);
}
}
}
code côté client:
public class StateObject
{
// Client socket.
public Socket workSocket = null;
public const int BufferSize = 1024;
// Receive buffer.
public byte[] buffer = new byte[BufferSize];
}
public static ManualResetEvent allDone = new ManualResetEvent(false);
public void StartListening()
{
byte[] bytes = new Byte[1024];
IPAddress address = IPAddress.Parse(ServerIP);
IPEndPoint ipEnd = new IPEndPoint(address, 9050);
Socket listener = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
try
{
listener.Bind(ipEnd);
listener.Listen(100);
while (true)
{
allDone.Reset();
// string ip = listener.RemoteEndPoint.ToString();
listener.BeginAccept(new AsyncCallback(AcceptCallback), listener);
allDone.WaitOne();
}
}
catch (Exception ex)
{
throw ex;
}
}
public void AcceptCallback(IAsyncResult ar)
{
allDone.Set();
Socket listener = (Socket)ar.AsyncState;
Socket handler = listener.EndAccept(ar);
StateObject state = new StateObject();
state.workSocket = handler;
handler.BeginReceive(state.buffer, 0, StateObject.BufferSize, 0,
new AsyncCallback(ReadCallback), state);
flag = 0;
}
public void ReadCallback(IAsyncResult ar)
{
try
{
int fileNameLen = 1;
String content = String.Empty;
StateObject state = (StateObject)ar.AsyncState;
Socket handler = state.workSocket;
//string[] str = new string[2];
//str = handler.RemoteEndPoint.ToString().Split(':');
string path = mypath + "@Login.XML";
if (!Directory.Exists(path))
{
Directory.CreateDirectory(path);
}
int bytesRead = handler.EndReceive(ar);
if (bytesRead > 0)
{
if (flag == 0)
{
fileNameLen = BitConverter.ToInt32(state.buffer, 0);
string fileName = Encoding.UTF8.GetString(state.buffer, 4, fileNameLen);
receivedPath = mypath + "@Login.XML";
flag++;
}
if (flag >= 1)
{
BinaryWriter writer = new BinaryWriter(File.Open(receivedPath, FileMode.Append));
if (flag == 1)
{
writer.Write(state.buffer, 4 + fileNameLen, bytesRead - (4 + fileNameLen));
flag++;
}
else
writer.Write(state.buffer, 0, bytesRead);
writer.Close();
handler.BeginReceive(state.buffer, 0, StateObject.BufferSize, 0,
new AsyncCallback(ReadCallback), state);
}
}
else
{
Invoke(new MyDelegate(LabelWriter));
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
public void LabelWriter()
{
MessageBox.Show("Data has been received");
Programs p = new Programs();
p.GetFile(serverIP);
}
ce code est utilisé pour obtenir le fichier du serveur.
private void GetLoginTemp()
{
Socket clientSock = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
try
{
char[] delimiter = splitter.ToCharArray();
byte[] fileName = Encoding.UTF8.GetBytes("empty"); //file name
byte[] fileData;
fileData = Encoding.UTF8.GetBytes("empty");
//byte[] fileData = reads.ReadToEnd().to; //file
byte[] fileNameLen = BitConverter.GetBytes(fileName.Length); //lenght of file name
clientData = new byte[4 + fileName.Length + fileData.Length];
fileNameLen.CopyTo(clientData, 0);
fileName.CopyTo(clientData, 4);
fileData.CopyTo(clientData, 4 + fileName.Length);
System.Net.IPAddress ipAdd = System.Net.IPAddress.Parse(serverIP);
IPEndPoint ipEnd = new IPEndPoint(ipAdd, 9050);
clientSock.Connect(ipEnd); //target machine's ip address and the port number
clientSock.Send(clientData);
byte[] clientData1 = new byte[1024 * 5000];
string receivedPath = mypath + @"\XML" + @"\Login.xml";
int receivedBytesLen = clientSock.Receive(clientData1);
int fileNameLen1 = BitConverter.ToInt32(clientData1, 0);
string fileName1 = Encoding.ASCII.GetString(clientData1, 4, fileNameLen1);
BinaryWriter bWrite = new BinaryWriter(File.Open(receivedPath + fileName, FileMode.Append)); ;
bWrite.Write(clientData, 4 + fileNameLen1, receivedBytesLen - 4 - fileNameLen1);
//clientSock.Shutdown(SocketShutdown.Send);
clientSock.Close();
}
catch (Exception ex)
{
clientSock.Close();
MessageBox.Show(ex.Message);
}
}
Brandon i face à cette erreur « Pas de connexion pourrait être faite parce que la machine cible activement refusé 192.168.1.5:9050 » cette erreur je fais face à la fonction senddata. –
Avez-vous un numéro de ligne ou d'autres informations? J'ai regardé le code et je pense que vous essayez d'exécuter le code côté serveur sur le client et le serveur. Vous devez avoir un côté en tant qu'écouteur et un qui sort activement et cherche l'auditeur quand il a besoin des données. Parce que TCP est orienté connexion, c'est après la connexion initiale que toute transmission doit avoir lieu en utilisant le flux établi sur la connexion. – Brandon