internal void SendMessage(SftpMessage sftpMessage)
{
var messageData = sftpMessage.GetBytes();
var data = new byte[4 + messageData.Length];
((uint)messageData.Length).GetBytes().CopyTo(data, 0);
messageData.CopyTo(data, 4);
this.SendData(data);
}
public SftpDataMessage(uint localChannelNumber, SftpMessage sftpMessage)
{
this.LocalChannelNumber = localChannelNumber;
var messageData = sftpMessage.GetBytes();
var data = new byte[4 + messageData.Length];
((uint)messageData.Length).GetBytes().CopyTo(data, 0);
messageData.CopyTo(data, 4);
this.Data = data;
}
protected override void OnDataReceived(uint dataTypeCode, byte[] data)
{
// Add channel data to internal data holder
this._data.AddRange(data);
while (this._data.Count > 4 + 1)
{
// Extract packet length
var packetLength = (this._data[0] << 24 | this._data[1] << 16 | this._data[2] << 8 | this._data[3]);
// Check if complete packet data is available
if (this._data.Count < packetLength + 4)
{
// Wait for complete message to arrive first
break;
}
this._data.RemoveRange(0, 4);
// Create buffer to hold packet data
var packetData = new byte[packetLength];
// Cope packet data to array
this._data.CopyTo(0, packetData, 0, packetLength);
// Remove loaded data from _data holder
this._data.RemoveRange(0, packetLength);
// Load SFTP Message and handle it
var response = SftpMessage.Load(this.ProtocolVersion, packetData, this.Encoding);
try
{
var versionResponse = response as SftpVersionResponse;
if (versionResponse != null)
{
this.ProtocolVersion = versionResponse.Version;
this._supportedExtensions = versionResponse.Extentions;
this._sftpVersionConfirmed.Set();
}
else
{
this.HandleResponse(response as SftpResponse);
}
}
catch (Exception exp)
{
this.RaiseError(exp);
break;
}
}
}
private static SftpMessage Load(uint protocolVersion, byte[] data, SftpMessageTypes messageType, Encoding encoding)
{
SftpMessage message = null;
switch (messageType)
{
case SftpMessageTypes.Version:
message = new SftpVersionResponse();
break;
case SftpMessageTypes.Status:
message = new SftpStatusResponse(protocolVersion);
break;
case SftpMessageTypes.Data:
message = new SftpDataResponse(protocolVersion);
break;
case SftpMessageTypes.Handle:
message = new SftpHandleResponse(protocolVersion);
break;
case SftpMessageTypes.Name:
message = new SftpNameResponse(protocolVersion, encoding);
break;
case SftpMessageTypes.Attrs:
message = new SftpAttrsResponse(protocolVersion);
break;
case SftpMessageTypes.ExtendedReply:
message = new SftpExtendedReplyResponse(protocolVersion);
break;
default:
throw new NotSupportedException(string.Format(CultureInfo.CurrentCulture, "Message type '{0}' is not supported.", messageType));
}
message.LoadBytes(data);
message.ResetReader();
message.LoadData();
return(message);
}
