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भेजना और प्राप्त करना मैं दो एप्लिकेशन विकसित कर रहा हूं, एक सर्वर एप्लीकेशन है और दूसरा हैंडहेल्ड डिवाइस एप्लिकेशन वायरलेस कनेक्शन का उपयोग करके दोनों संवाद करता है। क्लाइंट हैंडहेल्ड है और सर्वर मेरा कंप्यूटर है जहां सर्वर एप्लिकेशन चल रहा है। जब मैं क्लाइंट से सर्वर तक फ़ाइलों को भेजने के यह किसी भी त्रुटि के बिना पूरी तरह से भेज लेकिनफाइल सॉकेट प्रोग्रामिंग
फ़ाइलों के लिए ग्राहक के अनुरोध सर्वर उपज त्रुटि कुछ की तरह "क्योंकि लक्ष्य मशीन सक्रिय रूप से इसे मना कर दिया 192.168.1.5:9050 कोई कनेक्शन नहीं बनाया जा सकता है" जबसर्वर साइड कोड:
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);
}
}
}
क्लाइंट पक्ष कोड:
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);
}
इस कोड को सर्वर से फ़ाइल प्राप्त करने के लिए प्रयोग किया जाता है।
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);
}
}
ब्रैंडन मैं उस त्रुटि "क्योंकि लक्ष्य मशीन सक्रिय रूप से इसे मना कर दिया 192.168.1.5:9050 कोई कनेक्शन नहीं बनाया जा सकता है" का सामना भेजा गया हो तोयह त्रुटि मुझे senddata फ़ंक्शन में सामना करती है। –
क्या आपके पास कोई लाइन नंबर या कोई अन्य जानकारी है? मैंने कोड को देखा और मुझे लगता है कि आप क्लाइंट और सर्वर दोनों पर सर्वर-साइड कोड करने का प्रयास कर रहे हैं। आपको श्रोता के रूप में एक तरफ होना चाहिए और वह सक्रिय रूप से बाहर निकलता है और जब उसे डेटा की आवश्यकता होती है तो श्रोता की तलाश होती है। चूंकि टीसीपी कनेक्शन उन्मुख है, यह प्रारंभिक कनेक्शन के बाद है कि सभी संचरण कनेक्शन पर स्थापित धारा का उपयोग करके किया जाना चाहिए। – Brandon