跨多个c#方法共享WinSCP . net会话

Question

我用c#编写了一个程序，它使用WinSCP . net递归地在SFTP站点中搜索特定的子文件夹模式，然后递归地枚举这些目录的内容。

程序可以工作，但是每个方法的前半部分是相同的。有很多关于会话设置和会话启动的样板文件。是否有一种方法，我可以只是定义一次公开，然后从每个方法引用会话?

感谢您的帮助。

using WinSCP;

class Sanity
{
public static int Main()
{ 
try
{
// Setup session options
SessionOptions settings = new SessionOptions
{
Protocol = Protocol.Sftp,
HostName = "",
UserName = "",
Password = "",
SshHostKeyFingerprint = ""
};

using (Session session = new Session())
{
session.Open(settings); // Connect

string homeDir = "/something";
RemoteDirectoryInfo directory = 
session.ListDirectory(homeDir);  // Set root location

foreach (RemoteFileInfo file in directory.Files)  // Loop over the directories
{                                      
LookDir(file.FullName);     // Pass each parent directory
}
}

return 0;   
}
catch (Exception e)
{
Console.WriteLine("Error: {0}", e);
return 1;
}
}
public static void LookDir(string dir) // Searches for the Inbound folder
{
// Setup session options
SessionOptions settings = new SessionOptions
{
Protocol = Protocol.Sftp,
HostName = "",
UserName = "",
Password = "",
SshHostKeyFingerprint = ""
};
using (Session session = new Session())
{
// Connect
session.Open(settings);
RemoteDirectoryInfo directory = 
session.ListDirectory(dir);
foreach (RemoteFileInfo file in directory.Files)
{                                      
if (!file.FullName.Contains(".") && file.IsDirectory) {
LookDir(file.FullName);  //Recursive
if (file.FullName.EndsWith("/Inbound")) {

Console.WriteLine("Passing " + file.FullName + " for analysis");
FileCheck(file.FullName);  // Pass Inbound for enumeration
}
} 
}
}
}
public static void FileCheck(string Nug) //Recursively checks the Inbound folder for files
{
SessionOptions settings = new SessionOptions
{
Protocol = Protocol.Sftp,
HostName = "",
UserName = "",
Password = "",
SshHostKeyFingerprint = ""
};
using (Session session = new Session())
{
// Connect
session.Open(settings);
IEnumerable<RemoteFileInfo> fileInfos =
session.EnumerateRemoteFiles(Nug, "*", WinSCP.EnumerationOptions.AllDirectories);

int count = fileInfos.Count();

if (count > 0) {  
Console.WriteLine("It contains " + count + " files");

}
}
}
}

我确实试图将会话传递给类变量或参数，但我得到错误。我不确定我想要的是否可能。

Answer 1

如果您只想打开会话一次，使用如下方法:

Session _session = null;
private Session GetSession()
{
if (_session == null)
{
var settings = new SessionOptions
{
Protocol = Protocol.Sftp,
HostName = "",
UserName = "",
Password = "",
SshHostKeyFingerprint = ""
};

var session = new Session();
session.Open();
_session = session;
}

return _session;
}

但是您还需要确保在程序结束时处置_session。你需要确保你从来没有尝试并行使用_session多次。

---

如果你只是想排除Session的创建，请参见:
使用ASP Session变量创建WinSCP SessionOptions，使其可以在多个方法之间重用