From 3872d9fae805d83f33c3ac053b6301ea65a744c3 Mon Sep 17 00:00:00 2001
From: Matteo Bigoi <bigo@crisidev.org>
Date: Mon, 16 Nov 2020 12:50:49 +0000
Subject: Update documentation to ensure sending and receiving files via SCP
 wait for the transfer to finish. Add Netconf example

Signed-off-by: Bigo <bigo@crisidev.org>
---
 src/lib.rs | 84 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 83 insertions(+), 1 deletion(-)

diff --git a/src/lib.rs b/src/lib.rs
index 036a769..f74e01e 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -101,9 +101,15 @@
 //! sess.handshake().unwrap();
 //! sess.userauth_agent("username").unwrap();
 //!
+//! // Write the file
 //! let mut remote_file = sess.scp_send(Path::new("remote"),
 //!                                     0o644, 10, None).unwrap();
 //! remote_file.write(b"1234567890").unwrap();
+//! // Close the channel and wait for the whole content to be tranferred
+//! remote_file.send_eof().unwrap();
+//! remote_file.wait_eof().unwrap();
+//! remote_file.close().unwrap();
+//! remote_file.wait_close().unwrap();
 //! ```
 //!
 //! ## Download a file
@@ -125,7 +131,83 @@
 //! println!("remote file size: {}", stat.size());
 //! let mut contents = Vec::new();
 //! remote_file.read_to_end(&mut contents).unwrap();
-//! // ...
+//!
+//! // Close the channel and wait for the whole content to be tranferred
+//! remote_file.send_eof().unwrap();
+//! remote_file.wait_eof().unwrap();
+//! remote_file.close().unwrap();
+//! remote_file.wait_close().unwrap();
+//! ```
+//!
+//! ## Execute a Netconf XML payload
+//! 
+//! ```no_run
+//! use ssh2::{Channel, Session};
+//! use std::error::Error;
+//! use std::io::prelude::*;
+//! use std::net::TcpStream;
+//! 
+//! const HELLO: &str = "<hello xmlns=\"urn:ietf:params:xml:ns:netconf:base:1.0\">
+//!   <capabilities>
+//!     <capability>urn:ietf:params:netconf:base:1.1</capability>
+//!   </capabilities>
+//! </hello>
+//! ]]>]]>";
+//! 
+//! const PAYLOAD: &str = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>
+//!     <rpc xmlns=\"urn:ietf:params:xml:ns:netconf:base:1.1\" message-id=\"2\">
+//!     <cli xmlns=\"http://cisco.com/ns/yang/cisco-nx-os-device\"><mode>EXEC</mode><cmdline>show version</cmdline></cli>
+//! </rpc>";
+//! 
+//! fn read(channel: &mut Channel) -> Result<String, Box<dyn Error>> {
+//!     let mut result = String::new();
+//!     loop {
+//!         // If you plan to use this, be aware that reading 1 byte at a time is terribly
+//!         // inefficient and should be optimized for your usecase. This is just an example.
+//!         let mut buffer = [1u8; 1];
+//!         let bytes_read = channel.read(&mut buffer[..])?;
+//!         let s = String::from_utf8_lossy(&buffer[..bytes_read]);
+//!         result.push_str(&s);
+//!         if result.ends_with("]]>]]>") {
+//!             println!("Found netconf 1.0 terminator, breaking read loop");
+//!             break;
+//!         }
+//!         if result.ends_with("##") {
+//!             println!("Found netconf 1.1 terminator, breaking read loop");
+//!             break;
+//!         }
+//!         if bytes_read == 0 || channel.eof() {
+//!             println!("Buffer is empty, SSH channel read terminated");
+//!             break;
+//!         }
+//!     }
+//!     Ok(result)
+//! }
+//! 
+//! fn main() -> Result<(), Box<dyn Error>> {
+//!     let tcp = TcpStream::connect("127.0.0.1:830")?;
+//!     let mut sess = Session::new()?;
+//!     sess.set_tcp_stream(tcp);
+//!     sess.handshake().unwrap();
+//!     sess.userauth_password("user", "pass")?;
+//! 
+//!     let mut channel = sess.channel_session()?;
+//!     channel.subsystem("netconf")?;
+//!     let result = read(&mut channel)?;
+//!     println!("Result from connection:\n{}", result);
+//! 
+//!     let payload = format!("{}\n#{}\n{}\n##\n", HELLO, PAYLOAD.len(), PAYLOAD);
+//!     let a = channel.write(payload.as_bytes())?;
+//!     println!("Written {} bytes payload", a);
+//!     let result = read(&mut channel)?;
+//!     println!("Result from payload execution:\n{}", result);
+//! 
+//!     channel.send_eof()?;
+//!     channel.wait_eof()?;
+//!     channel.close()?;
+//!     channel.wait_close()?;
+//!     Ok(())
+//! }
 //! ```
 
 #![doc(html_root_url = "https://docs.rs/ssh2")]
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