/// <summary>Upload a local file to the host. The remote file will be named 'remote_filename' on the host</summary>
public void Upload(string local_filepath, string remote_filename, ResumeBehaviour resume = ResumeBehaviour.DontResume)
{
Trace(string.Format("Uploading: {0} to {1}/{2}/{3}", local_filepath, Settings.RemoteHost, Settings.RemotePath, remote_filename));
Reply reply;
// Check the local filepath exists first
if (!Path_.FileExists(local_filepath))
{
throw new FileNotFoundException("Upload failed", local_filepath);
}
// Upload the file
using (var input = new FileStream(local_filepath, FileMode.Open, FileAccess.Read))
{
if (resume != ResumeBehaviour.DontResume)
{
// Some servers may not support resumed uploading.
long offset = RemoteFileSize(remote_filename);
if (SendCommand("REST " + offset).Code == Status.PendingFurtherInfo)
{
Trace("Resuming file upload from offset " + offset);
input.Seek(offset, SeekOrigin.Begin);
}
else if (resume == ResumeBehaviour.Resume)
{
// The caller specifically wanted resuming but it's
// not supported, throw so they can choose what to do.
Trace("Resuming not supported. Aborting.");
throw new NotSupportedException("Resumed upload not supported by server");
}
else
{
Trace("Resuming not supported. Restarting.");
input.Seek(0, SeekOrigin.Begin);
}
}
// Store the file
reply = SendCommand("STOR " + remote_filename);
if (reply.Code != Status.DataConnectionAlreadyOpen && reply.Code != Status.DataConnectionOpenning)
{
throw new IOException(reply.Message);
}
// Write the file to the data channel
using (BinaryWriter w = new BinaryWriter(ConnectDataStream()))
input.CopyTo(w.BaseStream);
}
// Confirm done
reply = ReadReply();
if (reply.Code != Status.DataConnectionClosing && reply.Code != Status.RequestedActionOkay)
{
throw new IOException(reply.Message);
}
}
/// <summary>Download a remote file to a local filepath. The local file will be created, appended, or overwritten, but the path must exist.</summary>
public void Download(string remote_filename, string local_filepath, ResumeBehaviour resume = ResumeBehaviour.DontResume)
{
Trace(string.Format("Downloading: {0} from {1}/{2} to {3}", remote_filename, Settings.RemoteHost, Settings.RemotePath, local_filepath));
Reply reply;
// If the local filepath is a directory, then append the remote filename as the local filename
if (Directory.Exists(local_filepath))
{
local_filepath = Path.Combine(local_filepath, remote_filename);
}
// Download the file
using (FileStream output = new FileStream(local_filepath, FileMode.OpenOrCreate, FileAccess.Write))
{
long offset = output.Length;
if (resume != ResumeBehaviour.DontResume && offset != 0)
{
// Some servers may not support resuming.
if (SendCommand("REST " + offset).Code == Status.PendingFurtherInfo)
{
Trace("Resuming download at offset " + offset);
output.Seek(offset, SeekOrigin.Begin);
}
else if (resume == ResumeBehaviour.Resume)
{
// The caller specifically wanted resuming but it's
// not supported, throw so they can choose what to do.
Trace("Resuming not supported. Aborting.");
throw new NotSupportedException("Resumed download not supported by server");
}
else
{
Trace("Resuming not supported. Restarting.");
output.Seek(0, SeekOrigin.Begin);
}
}
// Retrieve the file
reply = SendCommand("RETR " + remote_filename);
if (reply.Code != Status.DataConnectionOpenning && reply.Code != Status.DataConnectionAlreadyOpen)
{
throw new IOException(reply.Message);
}
// Read the file data from the data channel
using (BinaryReader r = new BinaryReader(ConnectDataStream()))
r.BaseStream.CopyTo(output);
}
// Confirm done
reply = ReadReply();
if (reply.Code != Status.DataConnectionClosing && reply.Code != Status.RequestedActionOkay)
{
throw new IOException(reply.Message);
}
}
/// <summary>Upload a local file to the host. The remote file will have the same name on the host as the local file.</summary>
public void Upload(string local_filepath, ResumeBehaviour resume = ResumeBehaviour.DontResume)
{
Upload(local_filepath, Path.GetFileName(local_filepath), resume);
}
/// <summary>Download a remote file to the local directory, keeping the same file name.</summary>
public void Download(string remote_filename, ResumeBehaviour resume = ResumeBehaviour.DontResume)
{
Download(remote_filename, @".\" + remote_filename, resume);
}
