From 056f8c7c7f2213a284af59a7825faa97bc51a6f3 Mon Sep 17 00:00:00 2001
From: ChristianVisintin <christian.visintin1997@gmail.com>
Date: Sat, 21 Nov 2020 17:37:49 +0100
Subject: [PATCH] is_connected method

---
 src/filetransfer/mod.rs           |  5 +++++
 src/filetransfer/sftp_transfer.rs | 11 +++++++++++
 2 files changed, 16 insertions(+)

diff --git a/src/filetransfer/mod.rs b/src/filetransfer/mod.rs
index 4d11f07..91bb6be 100644
--- a/src/filetransfer/mod.rs
+++ b/src/filetransfer/mod.rs
@@ -80,6 +80,11 @@ pub trait FileTransfer {
 
     fn disconnect(&mut self) -> Result<(), FileTransferError>;
 
+    /// ### is_connected
+    /// 
+    /// Indicates whether the client is connected to remote
+    fn is_connected(&self) -> bool;
+
     /// ### pwd
     /// 
     /// Print working directory
diff --git a/src/filetransfer/sftp_transfer.rs b/src/filetransfer/sftp_transfer.rs
index bb300bf..ffe93fa 100644
--- a/src/filetransfer/sftp_transfer.rs
+++ b/src/filetransfer/sftp_transfer.rs
@@ -177,6 +177,13 @@ impl FileTransfer for SftpFileTransfer {
         }
     }
 
+    /// ### is_connected
+    /// 
+    /// Indicates whether the client is connected to remote
+    fn is_connected(&self) -> bool {
+        self.session.is_some()
+    }
+
     /// ### pwd
     ///
     /// Print working directory
@@ -487,11 +494,13 @@ mod tests {
         assert!(client.session.is_none());
         assert!(client.sftp.is_none());
         assert_eq!(client.wrkdir, PathBuf::from("~"));
+        assert_eq!(client.is_connected(), false);
     }
 
     #[test]
     fn test_filetransfer_sftp_connect() {
         let mut client: SftpFileTransfer = SftpFileTransfer::new();
+        assert_eq!(client.is_connected(), false);
         assert!(client
             .connect(
                 String::from("test.rebex.net"),
@@ -504,8 +513,10 @@ mod tests {
         assert!(client.session.is_some());
         assert!(client.sftp.is_some());
         assert_eq!(client.wrkdir, PathBuf::from("/"));
+        assert_eq!(client.is_connected(), true);
         // Disconnect
         assert!(client.disconnect().is_ok());
+        assert_eq!(client.is_connected(), false);
     }
 
     #[test]