An Elixir wrapper around the Erlang SFTP application. This allows for the use of Elixir Streams to transfer files via SFTP.

The following is an example of creating a connection with a username and password.

{:ok, conn} = SftpEx.connect([host: 'somehost', user: 'someuser', password: 'somepassword'])

Other connection arguments can be found in the Erlang documentation

An example of writing a file to a server is the following.

stream = File.stream!("filename.txt")
    |> Stream.into(SftpEx.stream!(connection,"/home/path/filename.txt"))
    |> Stream.run

A file can be downloaded as follows - in this example a remote file "test2.csv" is downloaded to the local file "filename.txt"

SftpEx.stream!(connection,"test2.csv") |> Stream.into(File.stream!("filename.txt")) |> Stream.run

or using Enum.into

SftpEx.stream!(connection, "test2.csv") |> Enum.into(File.stream!("filename.txt"))

This follows the same pattern as Elixir IO streams so a file can be transferred from one server to another via SFTP as follows.

stream = SftpEx.stream!(connection,"/home/path/filename.txt")
|> Stream.into(SftpEx.stream!(connection2,"/home/path/filename.txt"))
|> Stream.run

If available in Hex, the package can be installed as:

1. Add sftp_ex to your list of dependencies in mix.exs:

```elixir
def deps do
  [{:sftp_ex, "~> 0.2.1"}]
end
```

2. Ensure sftp_ex is started before your application:

```elixir
def application do
  [applications: [:sftp_ex]]
end
```