public Tuple<string, List<string>> ChunksUpto(string str, int ChunkSize)
{
// Get the hash of the string
var fileDictObject = new ObjectForFiledict();
StringBuilder sb = new StringBuilder();
byte[] fileBytes = Encoding.UTF8.GetBytes(str);
using (var cryptoProvider = new SHA1CryptoServiceProvider())
{
sb.Append(BitConverter.ToString(cryptoProvider.ComputeHash(fileBytes)));
}
List<string> result = new List<string>();
for (int i = 0; i < str.Length; i += ChunkSize)
result.Add(str.Substring(i, Math.Min(ChunkSize, str.Length - i)));
return new Tuple<string, List<string>>(sb.ToString(),result);
}
public Tuple <string, List <string> > ChunksUpto(string str, int ChunkSize)
{
// Get the hash of the string
var fileDictObject = new ObjectForFiledict();
StringBuilder sb = new StringBuilder();
byte[] fileBytes = Encoding.UTF8.GetBytes(str);
using (var cryptoProvider = new SHA1CryptoServiceProvider())
{
sb.Append(BitConverter.ToString(cryptoProvider.ComputeHash(fileBytes)));
}
List <string> result = new List <string>();
for (int i = 0; i < str.Length; i += ChunkSize)
{
result.Add(str.Substring(i, Math.Min(ChunkSize, str.Length - i)));
}
return(new Tuple <string, List <string> >(sb.ToString(), result));
}
private async Task OnTransferAsync(TcpClient tcpClient, StateObject tcpState)
{
await Task.Yield();
using (var networkStream = tcpClient.GetStream())
{
var buffer = new byte[8192];
// Receiving and deserialized the serializable object
var byteCount = await networkStream.ReadAsync(buffer, 0, buffer.Length);
if (byteCount > 0)
{
ServerSb.Append(Encoding.UTF8.GetString(buffer, 0, byteCount));
var StringMsg = ServerSb.ToString();
if (StringMsg.IndexOf("</TcpMsg>") > -1)
{
var xmlSerializer = new XmlSerializer(typeof(ServerClientMsg));
var ReceivedMsgObject = new ServerClientMsg();
using (var textReader = new StringReader(StringMsg))
{
ReceivedMsgObject = (ServerClientMsg)xmlSerializer.Deserialize(textReader);
}
// Clear string builder since we are done with it
ServerSb.Clear();
var MsgObjectToReturn = new ServerClientMsg();
// If this thread is for the server
if (tcpState.ClientType == false)
{
MsgObjectToReturn = ServerCreateRly(ReceivedMsgObject);
}
// If this thread if for the client
else
{
// Now that we have the serializable object, we need to switch through all the commands
switch (ReceivedMsgObject.Command)
{
// Data request command
case (int)ServerClientMsg.Commands.DataRq:
byte[] file;
string hash = string.Empty;
//Console.WriteLine("Client Server: received data request for file: {0} segment: {1}", ReceivedMsgObject.NameOfFile,ReceivedMsgObject.SegmentOfFile);
string filepath = tcpState.TempFolderPath + @"/" + Path.GetFileNameWithoutExtension(ReceivedMsgObject.NameOfFile);
filepath += "_temp" + ReceivedMsgObject.SegmentOfFile + Path.GetExtension(ReceivedMsgObject.NameOfFile);
//Console.WriteLine("Client Server: Retreiving file: {0}", filepath);
// See if the client's server actually has the file or not
if (File.Exists(filepath))
{
file = File.ReadAllBytes(filepath);
}
else
{
//Console.WriteLine("Client Server could not find the file {0}", filepath);
file = new byte[2];
}
// Retrieveing the hash to send back with the data segment
foreach (var pair in tcpState.FileDict)
{
if (pair.Key == ReceivedMsgObject.NameOfFile)
{
ObjectForFiledict obj = pair.Value;
hash = obj.Hash;
//Console.WriteLine("Client Server: Hash = {0}", hash);
break;
}
}
MsgObjectToReturn.DataRly(hash, ReceivedMsgObject.SegmentOfFile, file);
break;
default:
Console.WriteLine("Invalid command to the client server");
break;
}
}
// At this point, the serializable object should be popululated with the proper command and info
StringBuilder SerializedSb = new StringBuilder();
using (var stringWriter = new StringWriter())
{
xmlSerializer.Serialize(stringWriter, MsgObjectToReturn);
SerializedSb.Append(stringWriter.ToString());
}
var serializedString = SerializedSb.ToString();
var MsgToSend = Encoding.UTF8.GetBytes(serializedString);
// Sending the serializable response back
await networkStream.WriteAsync(MsgToSend, 0, MsgToSend.Length);
//Console.WriteLine("[Server] Response has been given");
}
}
}
}
// This method is reponsible for getting the all the file segments from the available clients and stitch all the file segments back together
public async Task GetDownloadFile(StateObject clientState)
{
// Requesting the file location file the server
var getLocationCmd = new ClientPassableObject(clientState);
getLocationCmd.GetFilesLocation(clientState.FileNameToDownload);
await ClientStart(getLocationCmd);
while (getLocationCmd.DoneFlag == false)
{
;
}
Console.WriteLine("Client: File: {0} has a length of {1}", clientState.FileNameToDownload, getLocationCmd.FileToDownloadLength);
for (int i = 0; i < getLocationCmd.AddressAtFile2Download.Count; i++)
{
Console.WriteLine("Client: Address: {0} Port: {1}", getLocationCmd.AddressAtFile2Download[i],
getLocationCmd.PortAtFile2Download[i]);
}
var DataOperator = new DataSegmentObject();
var NoOfSegments = DataOperator.GetNoOfSegments(getLocationCmd.FileToDownloadLength, clientState.MaxChunkSize);
List <byte[]> bytesResult = new List <byte[]>();
List <int> ResultSegIndex = new List <int>();
string hashResult = string.Empty;
for (int i = 0; i < NoOfSegments; i++)
{
//Console.WriteLine("Client: requesting File: {0} segment: {1} from {2} {3}", clientState.FileNameToDownload, i,
//getLocationCmd.AddressAtFile2Download[0], getLocationCmd.PortAtFile2Download[0]);
var getFileCmd = new ClientPassableObject(clientState);
getFileCmd.GetFile(getLocationCmd.AddressAtFile2Download[0], getLocationCmd.PortAtFile2Download[0], clientState.FileNameToDownload, i);
await ClientStart(getFileCmd);
while (getFileCmd.DoneFlag == false)
{
;
}
//Console.WriteLine("Client: Received segment {0}", i);
bytesResult.Add(getFileCmd.ResultFileSegment);
ResultSegIndex.Add(getFileCmd.ResultFileSegmentNo);
hashResult = getFileCmd.ResultFileHash;
}
Console.WriteLine("Received all segments of the file");
List <string> AvailableAddresses = getLocationCmd.AddressAtFile2Download;
List <int> AvailablePorts = getLocationCmd.PortAtFile2Download;
int NoOfAvailableClient = AvailableAddresses.Count;
string FileToDownload = getLocationCmd.FileToDownload;
int SegmentDone = 0;
int SegmentInTransit = 0;
List <bool> BusyClient = new List <bool>();
List <Task> task = new List <Task>();
List <int> indexOfTasks = new List <int>();
List <ClientPassableObject> cmd = new List <ClientPassableObject>();
//while (SegmentDone < NoOfSegments)
//{
// for (int q = 0; q < AvailableAddresses.Count; q++)
// {
// if (SegmentDone < NoOfSegments)
// {
// var getfileCmd = new ClientPassableObject(clientState);
// getfileCmd.GetFile(AvailableAddresses[q], AvailablePorts[q], FileToDownload, SegmentDone);
// Console.WriteLine("Requesting segment #{0} from {1} , {2}", SegmentDone + SegmentInTransit, AvailableAddresses[q], AvailablePorts[q]);
// task.Add(ClientStart(getfileCmd));
// cmd.Add(getfileCmd);
// SegmentDone++;
// task[0].Wait();
// }
// else
// break;
// }
// // Wait until all the tasks are complete
// while (true)
// {
// int counter = 0;
// foreach (var command in cmd)
// {
// if (command.DoneFlag)
// counter++;
// }
// if (counter == cmd.Count)
// break;
// }
// for (int k = 0; k < cmd.Count; k++)
// {
// bytesResult.Add(cmd[k].ResultFileSegment);
// ResultSegIndex.Add(cmd[k].ResultFileSegmentNo);
// hashResult = cmd[k].ResultFileHash;
// }
// task.Clear();
// indexOfTasks.Clear();
// cmd.Clear();
//}
//for (int i = 0; i < NoOfAvailableClient; i++)
// BusyClient.Add(false);
//while (SegmentDone < NoOfSegments)
//{
// if ((SegmentInTransit + SegmentDone) <= NoOfSegments)
// {
// if (BusyClient.IndexOf(false) > -1)
// {
// int j = BusyClient.IndexOf(false);
// var getfileCmd = new ClientPassableObject(clientState);
// getfileCmd.GetFile(AvailableAddresses[j], AvailablePorts[j], FileToDownload, SegmentDone + SegmentInTransit);
// Console.WriteLine("Requesting segment #{0} from {1} , {2}", SegmentDone + SegmentInTransit, AvailableAddresses[j], AvailablePorts[j]);
// task.Add(ClientStart(getfileCmd));
// indexOfTasks.Add(j);
// BusyClient[j] = true;
// cmd.Add(getfileCmd);
// SegmentInTransit++;
// }
// else
// {
// for (int k = 0; k < indexOfTasks.Count; k++)
// {
// if (cmd[k].DoneFlag)
// {
// bytesResult.Add(cmd[k].ResultFileSegment);
// ResultSegIndex.Add(cmd[k].ResultFileSegmentNo);
// hashResult = cmd[k].ResultFileHash;
// BusyClient[indexOfTasks[k]] = false;
// SegmentDone++;
// SegmentInTransit--;
// }
// }
// for (int f = indexOfTasks.Count -1; f >= 0; f--)
// {
// if (cmd[f].DoneFlag)
// {
// task.RemoveAt(f);
// indexOfTasks.RemoveAt(f);
// cmd.RemoveAt(f);
// }
// }
// }
// }
//}
// Reordering the info
List <byte[]> ResultInOrder = new List <byte[]>();
for (int k = 0; k < bytesResult.Count; k++)
{
int indexOfSegment = ResultSegIndex.IndexOf(k);
ResultInOrder.Add(bytesResult[indexOfSegment]);
}
// Combine all the segment and compare the hashcode
int filesize = 0;
int accumulativeSize = 0;
foreach (var seg in ResultInOrder)
{
filesize += seg.Length;
}
byte[] wholeFile = new byte[filesize];
foreach (var seg in ResultInOrder)
{
System.Buffer.BlockCopy(seg, 0, wholeFile, accumulativeSize, seg.Length);
accumulativeSize += seg.Length;
}
var dataparser = new DataSegmentObject();
if (dataparser.getHashAndCompare(wholeFile, hashResult) == true)
{
Console.WriteLine("File: {0} is finished. You can find the file in the your desktop.");
var path = Environment.GetFolderPath(Environment.SpecialFolder.Desktop) + @"/" + clientState.FileNameToDownload + "new";
// Writing the whole file to the desktop
using (var bw = new BinaryWriter(File.Open(path, FileMode.OpenOrCreate)))
{
bw.Write(wholeFile);
}
FileInfo f = new FileInfo(path);
clientState.FilePathsToReg.Clear();
clientState.FilePathsToRegLength.Clear();
clientState.FilePathsToReg.Add(path);
clientState.FilePathsToRegLength.Add(f.Length);
var uploadcmd = new ClientPassableObject(clientState);
uploadcmd.RegisterFiles();
await ClientStart(uploadcmd);
while (uploadcmd.DoneFlag == false)
{
;
}
var DataParser = new DataSegmentObject();
// splitting the files up and store it in the temp folder
DataParser.SplitFile(path, clientState.MaxChunkSize, clientState.TempFolderPath);
var dictObject = new ObjectForFiledict();
dictObject.Hash = DataParser.GetHash(clientState.FilePathsToReg[0]);
dictObject.NoOfSegments = DataParser.GetNoOfSegments(clientState.FilePathsToRegLength[0], clientState.MaxChunkSize);
clientState.FileDict.Add(Path.GetFileName(clientState.FilePathsToReg[0]), dictObject);
}
else
{
Console.WriteLine("One of the file was corrupt. We need to retry");
}
commandPrint();
}
private async Task OnTransferAsync(TcpClient tcpClient, StateObject tcpState)
{
await Task.Yield();
using (var networkStream = tcpClient.GetStream())
{
var buffer = new byte[8192];
var byteCount = await networkStream.ReadAsync(buffer, 0, buffer.Length);
if (byteCount > 0)
{
ServerSb.Append(Encoding.UTF8.GetString(buffer, 0, byteCount));
var StringMsg = ServerSb.ToString();
if (StringMsg.IndexOf("</TcpMsg>") > -1)
{
var xmlSerializer = new XmlSerializer(typeof(ServerClientMsg));
var ReceivedMsgObject = new ServerClientMsg();
using (var textReader = new StringReader(StringMsg))
{
ReceivedMsgObject = (ServerClientMsg)xmlSerializer.Deserialize(textReader);
}
// Clear string builder since we are done with it
ServerSb.Clear();
var MsgObjectToReturn = new ServerClientMsg();
// If this thread if for the server
if (tcpState.ClientType == false)
{
MsgObjectToReturn = ServerCreateRly(ReceivedMsgObject);
}
// If this thread if for the client
else
{
Console.WriteLine("client Server received {0} command", ReceivedMsgObject.Command);
switch (ReceivedMsgObject.Command)
{
case (int)ServerClientMsg.Commands.DataRq:
string file = string.Empty;
string hash = string.Empty;
Console.WriteLine("ClientServer received the data request");
foreach (var pair in tcpState.FileDict)
{
if (pair.Key == ReceivedMsgObject.NameOfFile)
{
ObjectForFiledict resultObj = pair.Value;
file = resultObj.Segments[ReceivedMsgObject.SegmentOfFile];
hash = resultObj.Hash;
if (!file.Any() || String.IsNullOrEmpty(hash))
{
Console.WriteLine("string or hash is empty");
}
}
}
Console.WriteLine("ClientServer is sending string: {0} \nWith a hash of: {1}", file, hash);
MsgObjectToReturn.DataRly(hash, ReceivedMsgObject.SegmentOfFile, file);
break;
default:
Console.WriteLine("Invalid command to the client server");
break;
}
}
StringBuilder SerializedSb = new StringBuilder();
using (var stringWriter = new StringWriter())
{
xmlSerializer.Serialize(stringWriter, MsgObjectToReturn);
SerializedSb.Append(stringWriter.ToString());
}
var serializedString = SerializedSb.ToString();
var MsgToSend = Encoding.UTF8.GetBytes(serializedString);
await networkStream.WriteAsync(MsgToSend, 0, MsgToSend.Length);
//Console.WriteLine("[Server] Response has been given");
}
}
}
}
static void Main(string[] args)
{
using (var sr = new StreamReader(@"../../Intro.txt"))
{
while (!sr.EndOfStream)
Console.WriteLine(sr.ReadLine());
}
Tuple<string, string> userCommand;
/************************************************
*
* This block of code is used to instantiate the server
*
************************************************/
//var tcpServer = new TcpTorrent();
//var serverState = new StateObject();
//serverState.ClientType = false;
//var serverTask = tcpServer.StartListener(serverState);
//tcpServer.StartListener(serverState).Wait();
/************************************************
*
* This block of code is used to instantiate the client server
*
************************************************/
StateObject clientState = new StateObject();
var clientServer = new TcpTorrent();
clientState.Address = "127.0.0.1" ;
//clientState.Address = clientServer.GetLocalIPAddress();
clientState.Port = clientServer.GetOpenPort();
Console.WriteLine("Creating Client's server on Address: {0} , and Port: {1}", clientState.Address, clientState.Port);
var task = clientServer.StartListener(clientState);
// Creating a temp location to store all the temporary files
var random = new Random();
clientState.TempFolderPath = Environment.GetFolderPath(Environment.SpecialFolder.Desktop) + @"/Temp" + random.Next(1, 10);
if (!Directory.Exists(clientState.TempFolderPath))
{
Console.WriteLine("Client: Creating directory at {0}", clientState.TempFolderPath);
Directory.CreateDirectory(clientState.TempFolderPath);
}
else
{
clientState.TempFolderPath += random.Next(1, 10);
Console.WriteLine("Client: Creating directory at {0}", clientState.TempFolderPath);
Directory.CreateDirectory(clientState.TempFolderPath);
}
commandPrint();
while (true)
{
Thread.Sleep(200);
userCommand = getCommand();
// Switching through all the user's input
switch (userCommand.Item1)
{
case "LISTUPLOADABLES":
// Clearing the previous file paths since we are repopulating it
clientState.UploadableFilePath.Clear();
clientState.UploadableFileSize.Clear();
// Displaying all the files that are in the desktop folder
string path = Environment.GetFolderPath(Environment.SpecialFolder.Desktop);
int i = 1;
Console.WriteLine("\nThe following files are available for download");
foreach (var file in Directory.GetFiles(path))
{
// Only present the file if it hasn't already been added
if (!clientState.FileDict.ContainsKey(Path.GetFileName(file)))
{
FileInfo f = new FileInfo(file);
Console.WriteLine("{0}) {1}", i, Path.GetFileName(file));
clientState.UploadableFilePath.Add(file);
clientState.UploadableFileSize.Add(f.Length);
}
i++;
}
commandPrint();
break;
case "UPLOAD":
Tuple<bool, string> validCheck = IsValidInput(userCommand.Item2, clientState.UploadableFilePath.Count);
// If any of the value in the previous loop was invalid, we need to break out of this case.
if (validCheck.Item1 == false)
{
Console.WriteLine(validCheck.Item2);
commandPrint();
break;
}
// Now what we know that the user's inputs are valid, we need to store the path of the files that the user wants to upload
// Clearing the previous FilestoREg list because we have a new list.
clientState.FilePathsToReg.Clear();
clientState.FilePathsToRegLength.Clear();
foreach (string item in userCommand.Item2.Split(','))
{
clientState.FilePathsToReg.Add(clientState.UploadableFilePath[Convert.ToInt32(item) - 1]);
clientState.FilePathsToRegLength.Add(clientState.UploadableFileSize[Convert.ToInt32(item) - 1]);
}
// creating a new tcp client with the command to register the files that the user had selected
var uploadcmd = new ClientPassableObject(clientState);
uploadcmd.RegisterFiles();
var uploadclient = new TcpTorrent();
var clienttask = uploadclient.ClientStart(uploadcmd);
while (uploadcmd.DoneFlag == false) ;
// Now that we recieved upload on which file can be uploaded, we need to split the files up into segments and store it in the temp folder
for (int j = 0; j < uploadcmd.FilesRegSuccessCount.Count; j++)
{
if (uploadcmd.FilesRegSuccessCount[j] == true)
{
// Only do something if we don't already have the file in storage.
if (!clientState.FileDict.ContainsKey(Path.GetFileName(clientState.FilePathsToReg[j])))
{
var DataParser = new DataSegmentObject();
// splitting the files up and store it in the temp folder
DataParser.SplitFile(clientState.FilePathsToReg[j], clientState.MaxChunkSize, clientState.TempFolderPath);
var dictObject = new ObjectForFiledict();
dictObject.Hash = DataParser.GetHash(clientState.FilePathsToReg[j]);
dictObject.NoOfSegments = DataParser.GetNoOfSegments(clientState.FilePathsToRegLength[j], clientState.MaxChunkSize);
Console.WriteLine("Client: splitting file: {0} of length {1} to {2} segments",
clientState.FilePathsToReg[j], clientState.FilePathsToRegLength[j], dictObject.NoOfSegments);
clientState.FileDict.Add(Path.GetFileName(clientState.FilePathsToReg[j]), dictObject);
}
else
Console.WriteLine("Client: The file already exist in the dictionary. Do not add");
}
}
commandPrint();
break;
case "LISTDOWNLOADABLES":
// Creating a new tcp client that will get all the downloadable files
var printcmd = new ClientPassableObject(clientState);
printcmd.PrintDownloadable();
var printListclient = new TcpTorrent();
var printTask = printListclient.ClientStart(printcmd);
while (printcmd.DoneFlag == false) ;
clientState.DownloadableFileName = printcmd.DownloadableFiles;
clientState.DownloadableFileSize = printcmd.DownloadableFilesLength;
commandPrint();
break;
case "DOWNLOAD":
Tuple<bool, string> downloadValidCheck = IsValidInput(userCommand.Item2, clientState.DownloadableFileName.Count);
// If any of the value in the previous loop was invalid, we need to break out of this case.
if (downloadValidCheck.Item1 == false)
{
Console.WriteLine(downloadValidCheck.Item2);
commandPrint();
break;
}
// We are only going to allow one file to be download at a time
if (userCommand.Item2.Split(',').Length > 1)
{
Console.WriteLine("/nYou can only select one download file at a time");
break;
}
// Clearing the previous FilestoREg list because we have a new list.
clientState.FileNameToDownload = string.Empty;
clientState.FileNameToDownloadLength = 0;
clientState.FileNameToDownload = clientState.DownloadableFileName[Convert.ToInt32(userCommand.Item2) - 1];
clientState.FileNameToDownloadLength = clientState.DownloadableFileSize[Convert.ToInt32(userCommand.Item2) - 1];
// Creating a new TCP client that will download the file from the other client
var downloadClient = new TcpTorrent();
var downloadTask = downloadClient.GetDownloadFile(clientState);
Thread.Sleep(2000);
break;
case "LEAVE":
// createing a new tcp client that will request to leave
var leaveCmd = new ClientPassableObject(clientState);
leaveCmd.LeaveRequest();
var leaveClient = new TcpTorrent();
//Console.WriteLine("Creating leave task");
var leaveTask = leaveClient.ClientStart(leaveCmd);
while (leaveCmd.DoneFlag == false) ;
if (Directory.Exists(clientState.TempFolderPath))
{
Console.WriteLine("Client: deleting directory at {0}", clientState.TempFolderPath);
Directory.Delete(clientState.TempFolderPath, true);
}
else
Console.WriteLine("Client: Directory to delete doesn't exist");
Console.ReadKey();
Environment.Exit(0);
break;
case "HELP":
// display to the user the available commands if he/she typed help
using (var sr = new StreamReader(@"../../Intro.txt"))
{
while (!sr.EndOfStream)
Console.WriteLine(sr.ReadLine());
}
break;
default:
Console.WriteLine("\nSorry. That was an invalid input. Please try again. \nValid Inputs are 'Listuploadables','Upload-#','ListDownloadables','Download-#','Leave','Help'");
commandPrint();
break;
}
}
}
// This method is reponsible for getting the all the file segments from the available clients and stitch all the file segments back together
public async Task GetDownloadFile(StateObject clientState)
{
// Requesting the file location file the server
var getLocationCmd = new ClientPassableObject(clientState);
getLocationCmd.GetFilesLocation(clientState.FileNameToDownload);
await ClientStart(getLocationCmd);
while (getLocationCmd.DoneFlag == false) ;
Console.WriteLine("Client: File: {0} has a length of {1}", clientState.FileNameToDownload, getLocationCmd.FileToDownloadLength);
for (int i = 0; i < getLocationCmd.AddressAtFile2Download.Count; i++)
{
Console.WriteLine("Client: Address: {0} Port: {1}", getLocationCmd.AddressAtFile2Download[i],
getLocationCmd.PortAtFile2Download[i]);
}
var DataOperator = new DataSegmentObject();
var NoOfSegments = DataOperator.GetNoOfSegments(getLocationCmd.FileToDownloadLength, clientState.MaxChunkSize);
List<byte[]> bytesResult = new List<byte[]>();
List<int> ResultSegIndex = new List<int>();
string hashResult = string.Empty;
for (int i = 0; i < NoOfSegments; i++)
{
//Console.WriteLine("Client: requesting File: {0} segment: {1} from {2} {3}", clientState.FileNameToDownload, i,
//getLocationCmd.AddressAtFile2Download[0], getLocationCmd.PortAtFile2Download[0]);
var getFileCmd = new ClientPassableObject(clientState);
getFileCmd.GetFile(getLocationCmd.AddressAtFile2Download[0], getLocationCmd.PortAtFile2Download[0], clientState.FileNameToDownload, i);
await ClientStart(getFileCmd);
while (getFileCmd.DoneFlag == false) ;
//Console.WriteLine("Client: Received segment {0}", i);
bytesResult.Add(getFileCmd.ResultFileSegment);
ResultSegIndex.Add(getFileCmd.ResultFileSegmentNo);
hashResult = getFileCmd.ResultFileHash;
}
Console.WriteLine("Received all segments of the file");
List<string> AvailableAddresses = getLocationCmd.AddressAtFile2Download;
List<int> AvailablePorts = getLocationCmd.PortAtFile2Download;
int NoOfAvailableClient = AvailableAddresses.Count;
string FileToDownload = getLocationCmd.FileToDownload;
int SegmentDone = 0;
int SegmentInTransit = 0;
List<bool> BusyClient = new List<bool>();
List<Task> task = new List<Task>();
List<int> indexOfTasks = new List<int>();
List<ClientPassableObject> cmd = new List<ClientPassableObject>();
//while (SegmentDone < NoOfSegments)
//{
// for (int q = 0; q < AvailableAddresses.Count; q++)
// {
// if (SegmentDone < NoOfSegments)
// {
// var getfileCmd = new ClientPassableObject(clientState);
// getfileCmd.GetFile(AvailableAddresses[q], AvailablePorts[q], FileToDownload, SegmentDone);
// Console.WriteLine("Requesting segment #{0} from {1} , {2}", SegmentDone + SegmentInTransit, AvailableAddresses[q], AvailablePorts[q]);
// task.Add(ClientStart(getfileCmd));
// cmd.Add(getfileCmd);
// SegmentDone++;
// task[0].Wait();
// }
// else
// break;
// }
// // Wait until all the tasks are complete
// while (true)
// {
// int counter = 0;
// foreach (var command in cmd)
// {
// if (command.DoneFlag)
// counter++;
// }
// if (counter == cmd.Count)
// break;
// }
// for (int k = 0; k < cmd.Count; k++)
// {
// bytesResult.Add(cmd[k].ResultFileSegment);
// ResultSegIndex.Add(cmd[k].ResultFileSegmentNo);
// hashResult = cmd[k].ResultFileHash;
// }
// task.Clear();
// indexOfTasks.Clear();
// cmd.Clear();
//}
//for (int i = 0; i < NoOfAvailableClient; i++)
// BusyClient.Add(false);
//while (SegmentDone < NoOfSegments)
//{
// if ((SegmentInTransit + SegmentDone) <= NoOfSegments)
// {
// if (BusyClient.IndexOf(false) > -1)
// {
// int j = BusyClient.IndexOf(false);
// var getfileCmd = new ClientPassableObject(clientState);
// getfileCmd.GetFile(AvailableAddresses[j], AvailablePorts[j], FileToDownload, SegmentDone + SegmentInTransit);
// Console.WriteLine("Requesting segment #{0} from {1} , {2}", SegmentDone + SegmentInTransit, AvailableAddresses[j], AvailablePorts[j]);
// task.Add(ClientStart(getfileCmd));
// indexOfTasks.Add(j);
// BusyClient[j] = true;
// cmd.Add(getfileCmd);
// SegmentInTransit++;
// }
// else
// {
// for (int k = 0; k < indexOfTasks.Count; k++)
// {
// if (cmd[k].DoneFlag)
// {
// bytesResult.Add(cmd[k].ResultFileSegment);
// ResultSegIndex.Add(cmd[k].ResultFileSegmentNo);
// hashResult = cmd[k].ResultFileHash;
// BusyClient[indexOfTasks[k]] = false;
// SegmentDone++;
// SegmentInTransit--;
// }
// }
// for (int f = indexOfTasks.Count -1; f >= 0; f--)
// {
// if (cmd[f].DoneFlag)
// {
// task.RemoveAt(f);
// indexOfTasks.RemoveAt(f);
// cmd.RemoveAt(f);
// }
// }
// }
// }
//}
// Reordering the info
List<byte[]> ResultInOrder = new List<byte[]>();
for (int k = 0; k < bytesResult.Count; k++)
{
int indexOfSegment = ResultSegIndex.IndexOf(k);
ResultInOrder.Add(bytesResult[indexOfSegment]);
}
// Combine all the segment and compare the hashcode
int filesize = 0;
int accumulativeSize = 0;
foreach (var seg in ResultInOrder)
filesize += seg.Length;
byte[] wholeFile = new byte[filesize];
foreach (var seg in ResultInOrder)
{
System.Buffer.BlockCopy(seg, 0, wholeFile, accumulativeSize, seg.Length);
accumulativeSize += seg.Length;
}
var dataparser = new DataSegmentObject();
if (dataparser.getHashAndCompare(wholeFile, hashResult) == true)
{
Console.WriteLine("File: {0} is finished. You can find the file in the your desktop.");
var path = Environment.GetFolderPath(Environment.SpecialFolder.Desktop) + @"/" + clientState.FileNameToDownload + "new";
// Writing the whole file to the desktop
using (var bw = new BinaryWriter(File.Open(path, FileMode.OpenOrCreate)))
{
bw.Write(wholeFile);
}
FileInfo f = new FileInfo(path);
clientState.FilePathsToReg.Clear();
clientState.FilePathsToRegLength.Clear();
clientState.FilePathsToReg.Add(path);
clientState.FilePathsToRegLength.Add(f.Length);
var uploadcmd = new ClientPassableObject(clientState);
uploadcmd.RegisterFiles();
await ClientStart(uploadcmd);
while (uploadcmd.DoneFlag == false) ;
var DataParser = new DataSegmentObject();
// splitting the files up and store it in the temp folder
DataParser.SplitFile(path, clientState.MaxChunkSize, clientState.TempFolderPath);
var dictObject = new ObjectForFiledict();
dictObject.Hash = DataParser.GetHash(clientState.FilePathsToReg[0]);
dictObject.NoOfSegments = DataParser.GetNoOfSegments(clientState.FilePathsToRegLength[0], clientState.MaxChunkSize);
clientState.FileDict.Add(Path.GetFileName(clientState.FilePathsToReg[0]), dictObject);
}
else
{
Console.WriteLine("One of the file was corrupt. We need to retry");
}
commandPrint();
}
static void Main(string[] args)
{
using (var sr = new StreamReader(@"../../Intro.txt"))
{
while (!sr.EndOfStream)
{
Console.WriteLine(sr.ReadLine());
}
}
Tuple <string, string> userCommand;
/************************************************
*
* This block of code is used to instantiate the server
*
************************************************/
//var tcpServer = new TcpTorrent();
//var serverState = new StateObject();
//serverState.ClientType = false;
//var serverTask = tcpServer.StartListener(serverState);
//tcpServer.StartListener(serverState).Wait();
/************************************************
*
* This block of code is used to instantiate the client server
*
************************************************/
StateObject clientState = new StateObject();
var clientServer = new TcpTorrent();
clientState.Address = "127.0.0.1";
//clientState.Address = clientServer.GetLocalIPAddress();
clientState.Port = clientServer.GetOpenPort();
Console.WriteLine("Creating Client's server on Address: {0} , and Port: {1}", clientState.Address, clientState.Port);
var task = clientServer.StartListener(clientState);
// Creating a temp location to store all the temporary files
var random = new Random();
clientState.TempFolderPath = Environment.GetFolderPath(Environment.SpecialFolder.Desktop) + @"/Temp" + random.Next(1, 10);
if (!Directory.Exists(clientState.TempFolderPath))
{
Console.WriteLine("Client: Creating directory at {0}", clientState.TempFolderPath);
Directory.CreateDirectory(clientState.TempFolderPath);
}
else
{
clientState.TempFolderPath += random.Next(1, 10);
Console.WriteLine("Client: Creating directory at {0}", clientState.TempFolderPath);
Directory.CreateDirectory(clientState.TempFolderPath);
}
commandPrint();
while (true)
{
Thread.Sleep(200);
userCommand = getCommand();
// Switching through all the user's input
switch (userCommand.Item1)
{
case "LISTUPLOADABLES":
// Clearing the previous file paths since we are repopulating it
clientState.UploadableFilePath.Clear();
clientState.UploadableFileSize.Clear();
// Displaying all the files that are in the desktop folder
string path = Environment.GetFolderPath(Environment.SpecialFolder.Desktop);
int i = 1;
Console.WriteLine("\nThe following files are available for download");
foreach (var file in Directory.GetFiles(path))
{
// Only present the file if it hasn't already been added
if (!clientState.FileDict.ContainsKey(Path.GetFileName(file)))
{
FileInfo f = new FileInfo(file);
Console.WriteLine("{0}) {1}", i, Path.GetFileName(file));
clientState.UploadableFilePath.Add(file);
clientState.UploadableFileSize.Add(f.Length);
}
i++;
}
commandPrint();
break;
case "UPLOAD":
Tuple <bool, string> validCheck = IsValidInput(userCommand.Item2, clientState.UploadableFilePath.Count);
// If any of the value in the previous loop was invalid, we need to break out of this case.
if (validCheck.Item1 == false)
{
Console.WriteLine(validCheck.Item2);
commandPrint();
break;
}
// Now what we know that the user's inputs are valid, we need to store the path of the files that the user wants to upload
// Clearing the previous FilestoREg list because we have a new list.
clientState.FilePathsToReg.Clear();
clientState.FilePathsToRegLength.Clear();
foreach (string item in userCommand.Item2.Split(','))
{
clientState.FilePathsToReg.Add(clientState.UploadableFilePath[Convert.ToInt32(item) - 1]);
clientState.FilePathsToRegLength.Add(clientState.UploadableFileSize[Convert.ToInt32(item) - 1]);
}
// creating a new tcp client with the command to register the files that the user had selected
var uploadcmd = new ClientPassableObject(clientState);
uploadcmd.RegisterFiles();
var uploadclient = new TcpTorrent();
var clienttask = uploadclient.ClientStart(uploadcmd);
while (uploadcmd.DoneFlag == false)
{
;
}
// Now that we recieved upload on which file can be uploaded, we need to split the files up into segments and store it in the temp folder
for (int j = 0; j < uploadcmd.FilesRegSuccessCount.Count; j++)
{
if (uploadcmd.FilesRegSuccessCount[j] == true)
{
// Only do something if we don't already have the file in storage.
if (!clientState.FileDict.ContainsKey(Path.GetFileName(clientState.FilePathsToReg[j])))
{
var DataParser = new DataSegmentObject();
// splitting the files up and store it in the temp folder
DataParser.SplitFile(clientState.FilePathsToReg[j], clientState.MaxChunkSize, clientState.TempFolderPath);
var dictObject = new ObjectForFiledict();
dictObject.Hash = DataParser.GetHash(clientState.FilePathsToReg[j]);
dictObject.NoOfSegments = DataParser.GetNoOfSegments(clientState.FilePathsToRegLength[j], clientState.MaxChunkSize);
Console.WriteLine("Client: splitting file: {0} of length {1} to {2} segments",
clientState.FilePathsToReg[j], clientState.FilePathsToRegLength[j], dictObject.NoOfSegments);
clientState.FileDict.Add(Path.GetFileName(clientState.FilePathsToReg[j]), dictObject);
}
else
{
Console.WriteLine("Client: The file already exist in the dictionary. Do not add");
}
}
}
commandPrint();
break;
case "LISTDOWNLOADABLES":
// Creating a new tcp client that will get all the downloadable files
var printcmd = new ClientPassableObject(clientState);
printcmd.PrintDownloadable();
var printListclient = new TcpTorrent();
var printTask = printListclient.ClientStart(printcmd);
while (printcmd.DoneFlag == false)
{
;
}
clientState.DownloadableFileName = printcmd.DownloadableFiles;
clientState.DownloadableFileSize = printcmd.DownloadableFilesLength;
commandPrint();
break;
case "DOWNLOAD":
Tuple <bool, string> downloadValidCheck = IsValidInput(userCommand.Item2, clientState.DownloadableFileName.Count);
// If any of the value in the previous loop was invalid, we need to break out of this case.
if (downloadValidCheck.Item1 == false)
{
Console.WriteLine(downloadValidCheck.Item2);
commandPrint();
break;
}
// We are only going to allow one file to be download at a time
if (userCommand.Item2.Split(',').Length > 1)
{
Console.WriteLine("/nYou can only select one download file at a time");
break;
}
// Clearing the previous FilestoREg list because we have a new list.
clientState.FileNameToDownload = string.Empty;
clientState.FileNameToDownloadLength = 0;
clientState.FileNameToDownload = clientState.DownloadableFileName[Convert.ToInt32(userCommand.Item2) - 1];
clientState.FileNameToDownloadLength = clientState.DownloadableFileSize[Convert.ToInt32(userCommand.Item2) - 1];
// Creating a new TCP client that will download the file from the other client
var downloadClient = new TcpTorrent();
var downloadTask = downloadClient.GetDownloadFile(clientState);
Thread.Sleep(2000);
break;
case "LEAVE":
// createing a new tcp client that will request to leave
var leaveCmd = new ClientPassableObject(clientState);
leaveCmd.LeaveRequest();
var leaveClient = new TcpTorrent();
//Console.WriteLine("Creating leave task");
var leaveTask = leaveClient.ClientStart(leaveCmd);
while (leaveCmd.DoneFlag == false)
{
;
}
if (Directory.Exists(clientState.TempFolderPath))
{
Console.WriteLine("Client: deleting directory at {0}", clientState.TempFolderPath);
Directory.Delete(clientState.TempFolderPath, true);
}
else
{
Console.WriteLine("Client: Directory to delete doesn't exist");
}
Console.ReadKey();
Environment.Exit(0);
break;
case "HELP":
// display to the user the available commands if he/she typed help
using (var sr = new StreamReader(@"../../Intro.txt"))
{
while (!sr.EndOfStream)
{
Console.WriteLine(sr.ReadLine());
}
}
break;
default:
Console.WriteLine("\nSorry. That was an invalid input. Please try again. \nValid Inputs are 'Listuploadables','Upload-#','ListDownloadables','Download-#','Leave','Help'");
commandPrint();
break;
}
}
}
