public void CancelTransfer(FileTransferOut transfer)
{
transfer.Status = FileTransferStatus.Canceled;
activeTransfers.Remove(transfer);
OnEnded(transfer);
GameMain.Server.SendCancelTransferMsg(transfer);
}
public FileTransferOut StartTransfer(NetworkConnection recipient, FileTransferType fileType, string filePath)
{
if (activeTransfers.Count >= MaxTransferCount)
{
return(null);
}
if (activeTransfers.Count(t => t.Connection == recipient) > MaxTransferCountPerRecipient)
{
return(null);
}
if (!File.Exists(filePath))
{
DebugConsole.ThrowError("Failed to initiate file transfer (file \"" + filePath + "\" not found.");
return(null);
}
FileTransferOut transfer = null;
try
{
transfer = new FileTransferOut(recipient, fileType, filePath)
{
ID = 1
};
while (activeTransfers.Any(t => t.Connection == recipient && t.ID == transfer.ID))
{
transfer.ID++;
}
activeTransfers.Add(transfer);
}
catch (Exception e)
{
DebugConsole.ThrowError("Failed to initiate file transfer", e);
return(null);
}
OnStarted(transfer);
return(transfer);
}
private void Send(FileTransferOut transfer)
{
// send another part of the file
long remaining = transfer.Data.Length - transfer.SentOffset;
int sendByteCount = (remaining > chunkLen ? chunkLen : (int)remaining);
IWriteMessage message;
try
{
//first message; send length, file name etc
//wait for acknowledgement before sending data
if (!transfer.Acknowledged)
{
message = new WriteOnlyMessage();
message.Write((byte)ServerPacketHeader.FILE_TRANSFER);
//if the recipient is the owner of the server (= a client running the server from the main exe)
//we don't need to send anything, the client can just read the file directly
if (transfer.Connection == GameMain.Server.OwnerConnection)
{
message.Write((byte)FileTransferMessageType.TransferOnSameMachine);
message.Write((byte)transfer.ID);
message.Write((byte)transfer.FileType);
message.Write(transfer.FilePath);
peer.Send(message, transfer.Connection, DeliveryMethod.Unreliable);
transfer.Status = FileTransferStatus.Finished;
}
else
{
message.Write((byte)FileTransferMessageType.Initiate);
message.Write((byte)transfer.ID);
message.Write((byte)transfer.FileType);
//message.Write((ushort)chunkLen);
message.Write(transfer.Data.Length);
message.Write(transfer.FileName);
peer.Send(message, transfer.Connection, DeliveryMethod.Unreliable);
transfer.Status = FileTransferStatus.Sending;
if (GameSettings.VerboseLogging)
{
DebugConsole.Log("Sending file transfer initiation message: ");
DebugConsole.Log(" File: " + transfer.FileName);
DebugConsole.Log(" Size: " + transfer.Data.Length);
DebugConsole.Log(" ID: " + transfer.ID);
}
}
transfer.WaitTimer = 0.1f;
return;
}
message = new WriteOnlyMessage();
message.Write((byte)ServerPacketHeader.FILE_TRANSFER);
message.Write((byte)FileTransferMessageType.Data);
message.Write((byte)transfer.ID);
message.Write(transfer.SentOffset);
byte[] sendBytes = new byte[sendByteCount];
Array.Copy(transfer.Data, transfer.SentOffset, sendBytes, 0, sendByteCount);
message.Write((ushort)sendByteCount);
message.Write(sendBytes, 0, sendByteCount);
transfer.SentOffset += sendByteCount;
if (transfer.SentOffset > transfer.KnownReceivedOffset + chunkLen * 10 ||
transfer.SentOffset >= transfer.Data.Length)
{
transfer.SentOffset = transfer.KnownReceivedOffset;
transfer.WaitTimer = 0.5f;
}
peer.Send(message, transfer.Connection, DeliveryMethod.Unreliable);
}
catch (Exception e)
{
DebugConsole.ThrowError("FileSender threw an exception when trying to send data", e);
GameAnalyticsManager.AddErrorEventOnce(
"FileSender.Update:Exception",
GameAnalyticsSDK.Net.EGAErrorSeverity.Error,
"FileSender threw an exception when trying to send data:\n" + e.Message + "\n" + e.StackTrace.CleanupStackTrace());
transfer.Status = FileTransferStatus.Error;
return;
}
if (GameSettings.VerboseLogging)
{
DebugConsole.Log($"Sending {sendByteCount} bytes of the file {transfer.FileName} ({transfer.SentOffset / 1000}/{transfer.Data.Length / 1000} kB sent)");
}
}
