/// <summary>
/// Opens the specified file for appending. Please call GetReply() after you have successfully transfered the file to read the "OK" command sent by the server and prevent stale data on the socket.
/// </summary>
/// <param name="path">The full or relative path to the file to be opened</param>
/// <param name="type">ASCII/Binary</param>
/// <returns>A stream for writing to the file on the server</returns>
/// <example><code source="..\Examples\OpenAppend.cs" lang="cs" /></example>
public virtual Stream OpenAppend(string path, FtpDataType type)
{
FtpTrace.WriteFunc("OpenAppend", new object[] { path, type });
FtpClient client = null;
FtpDataStream stream = null;
long length = 0;
lock (m_lock) {
if (m_threadSafeDataChannels)
{
client = CloneConnection();
client.Connect();
client.SetWorkingDirectory(GetWorkingDirectory());
}
else
{
client = this;
}
client.SetDataType(type);
length = client.GetFileSize(path);
stream = client.OpenDataStream(("APPE " + path.GetFtpPath()), 0);
if (length > 0 && stream != null)
{
stream.SetLength(length);
stream.SetPosition(length);
}
}
return(stream);
}
/// <summary>
/// Opens the specified file for reading
/// </summary>
/// <param name="path">The full or relative path of the file</param>
/// <param name="type">ASCII/Binary</param>
/// <param name="restart">Resume location</param>
/// <returns>A stream for reading the file on the server</returns>
/// <example><code source="..\Examples\OpenRead.cs" lang="cs" /></example>
public virtual Stream OpenRead(string path, FtpDataType type, long restart)
{
// verify args
if (path.IsBlank())
{
throw new ArgumentException("Required parameter is null or blank.", "path");
}
FtpTrace.WriteFunc("OpenRead", new object[] { path, type, restart });
FtpClient client = null;
FtpDataStream stream = null;
long length = 0;
#if !CORE14
lock (m_lock) {
#endif
if (m_threadSafeDataChannels)
{
client = CloneConnection();
client.Connect();
client.SetWorkingDirectory(GetWorkingDirectory());
}
else
{
client = this;
}
client.SetDataType(type);
length = client.GetFileSize(path);
stream = client.OpenDataStream(("RETR " + path.GetFtpPath()), restart);
#if !CORE14
}
#endif
if (stream != null)
{
if (length > 0)
{
stream.SetLength(length);
}
if (restart > 0)
{
stream.SetPosition(restart);
}
}
return(stream);
}