最新更新（我如何解决我的问题）
以下代码是我的服务器程序如何从客户端的客户端接收文件。
解决了我的问题是在接收字节之前向客户端发送字符串。
TcpClient tcpFileSender = (TcpClient)htUsers[FileSender];
StreamWriter swWrtr = new StreamWriter(tcpFileSender.GetStream());
StreamReader srRdr = new StreamReader(tcpFileSender.GetStream());
//tell the client app that the server is ready for data transfer
swWrtr.WriteLine("#READY");
swWrtr.Flush();
//receive file name and file size
string filename = srRdr.ReadLine();
string filesizeSTR = srRdr.ReadLine();
Int32 filesize = Convert.ToInt32(filesizeSTR);
//Socket s = tcpFileSender.Client; //socket
NetworkStream s = tcpFileSender.GetStream(); //network stream
//NetworkStream s = tcpFileSender.GetStream();
//string tmpFile = Path.GetTempFileName();
//string newfile = path.changeextension(tmpfile, ".zip");
string desktop = "C:\\Users\\Anonymous\\Desktop\\";
string tmpFile = desktop + filename;
//File.Move(tmpFile, newfile);
//tmpFile = newfile;
string extension = Path.GetExtension(tmpFile);
string filenameonly = Path.GetFileNameWithoutExtension(tmpFile);
int i = 2;
while( File.Exists(tmpFile) )
{
tmpFile = desktop + filenameonly + i.ToString() + extension;
i++;
}
Console.WriteLine("File size: " + filesizeSTR);
FileStream ms = new FileStream(tmpFile, FileMode.Create, FileAccess.Write);
byte[] buffer = new byte[0x1000];
int szRead;
// These two lines of code solved the problem of "missing" bytes
swWrtr.WriteLine("#BEGIN");
swWrtr.Flush();
do
{
//int szRead = s.Receive(buffer, buffer.Length, SocketFlags.None); //socket
szRead = s.Read(buffer, 0, buffer.Length);
Console.WriteLine(szRead.ToString());
if (szRead > 0)
{
ms.Write(buffer, 0, szRead);
}
}
while (ms.Length < filesize);
// other codes for saving the file....
我有一个客户端程序将文件发送到服务器程序。
以下是客户端程序如何将文件发送到服务器程序
while ((read = source.Read(buffer, 0, buffer.Length)) > 0)
{
destination.Write(buffer, 0, read);
Console.WriteLine(read.ToString());
}
//read is an int
//source is a FileStream
//buffer is a byte[]
//destination is a NetworkStream
以下是服务器程序从客户端
接收文件的方式 do
{
szRead = s.Receive(buffer, buffer.Length, SocketFlags.None);
Console.WriteLine(szRead.ToString());
if (szRead > 0)
{
ms.Write(buffer, 0, szRead);
}
}
while (ms.Length < fileSize);
// szRead is an int
// s is a Socket
// buffer is a byte[]
// ms is a FileStream
// fileSize is an int
这是我运行程序时的控制台输出：
（客户端）
4096 4096 4096 4096 4096 4096 4096 2560
（服务器端）
4096 4096 4096 4096 4096 3079 4096 2560
因为我收到不完整的字节，服务器程序无法重建客户端程序发送的文件。我该如何解决这个问题？
编辑：我正在使用TCP
编辑：
客户:(很抱歉，我无法发布完整的代码。我的程序有点大）
public partial class UserLogInForm : Form
{
private TcpClient tcpServer;
private IPAddress ipAddr;
public string ipaHolder;
public UserLogInForm()
{
InitializeComponent();
ipaHolder = "192.168.1.55";
}
private bool InitializeConnection()
{
ipAddr = IPAddress.Parse(ipaHolder);
tcpServer = new TcpClient();
tcpServer.Connect(ipAddr, 1986);
//My application's actually a chat application as well, so I need the following
//These isn't how my program exactly looks like but these are actual codes from my program
swSender = new StreamWriter(tcpServer.GetStream());
swSender.WriteLine(UserName);
swSender.Flush();
srReceiver = new StreamReader(tcpServer.GetStream());
string ConResponse = srReceiver.ReadLine();
MyMainForm anotherForm = new MyMainForm(UserName, swSender, srReceiver, tcpServer, this)
}
}
public partial class MyMainForm : Form
{
private StreamWriter swSender;
private StreamReader srReceiver;
private TcpClient tcpServer;
public timex(string User, StreamWriter swSenderArg, StreamReader srReceiverArg, TcpClient tcpServerArg, UserLogInForm logInForm)
{
InitializeComponent();
swSender = swSenderArg;
srReceiver = srReceiverArg;
tcpServer = tcpServerArg;
}
private void fileToServer(string filename)
{
try
{
FileStream fs = new FileStream(filename, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
TcpClient cli = tcpServer;
NetworkStream ns = cli.GetStream();
CopyStreamToStream(fs, ns, null);
ns.Flush();
}
catch
{
MessageBox.Show("An error occurred while uploading the file to the server");
}
public static void CopyStreamToStream(Stream source, Stream destination, Action<Stream, Stream, Exception> completed)
{
byte[] buffer = new byte[0x1000];
int read;
Console.WriteLine("File size: " + source.Length);
try
{
while ((read = source.Read(buffer, 0, buffer.Length)) > 0)
{
destination.Write(buffer, 0, read);
Console.WriteLine(read.ToString());
}
if (completed != null) completed(source, destination, null);
}
catch (Exception exc)
{
if (completed != null) completed(source, destination, exc);
}
}
}
服务器
namespace ChatServerBase
{
class ChatServer
{
private TcpListener tlsClient;
private void Listen()
{
tcpClient = tlsClient.AcceptTcpClient();
Connection newConnection = new Connection(tcpClient);
}
public static void ReceiveFile()
{
// some codes
Socket s = tcpFileSender.Client;
//some codes
do
{
szRead = s.Receive(buffer, buffer.Length, SocketFlags.None);
Console.WriteLine(szRead.ToString());
if (szRead > 0)
{
ms.Write(buffer, 0, szRead);
}
}
while (ms.Length < fileSize);
//some codes
}
}
class Connection
{
public Connection(TcpClient tcpCon)
{
tcpClient = tcpCon;
thrSender = new Thread(AcceptClient);
thrSender.Start();
}
private void AcceptClient()
{
//some codes
ChatServer.ReceiveFile(currUser);
//some codes
}
}