Lua

SFTP Upload from Local Filesystem

See more SFTP Examples

Demonstrates how to upload a file to an SSH server. There are no limitations on file size, and the file is streamed directly from the local filesystem. Lua

local chilkat = require("chilkat")

-- This example assumes the Chilkat API to have been previously unlocked.
-- See Global Unlock Sample for sample code.

local sftp = chilkat.SFtp.new()

-- Set some timeouts, in milliseconds:
sftp.connect_timeout_ms = 5000
sftp.idle_timeout_ms = 10000

-- Connect to the SSH server.
-- The standard SSH port = 22
-- The hostname may be a hostname or IP address.
local hostname = "sftp.example.com"
local port = 22
local success = sftp:connect(hostname, port)
if not success then
    print(sftp.last_error_text)
    return
end

-- Authenticate with the SSH server.  Chilkat SFTP supports
-- both password-based authenication as well as public-key
-- authentication.  This example uses password authenication.
success = sftp:authenticate_pw("myLogin", "myPassword")
if not success then
    print(sftp.last_error_text)
    return
end

-- After authenticating, the SFTP subsystem must be initialized:
success = sftp:initialize_sftp()
if not success then
    print(sftp.last_error_text)
    return
end

-- Open a file for writing on the SSH server.
-- If the file already exists, it is overwritten.
-- (Specify "createNew" instead of "createTruncate" to
-- prevent overwriting existing files.)
local handle = sftp:open_file("hamlet.xml", "writeOnly", "createTruncate")
if not sftp.last_method_success then
    print(sftp.last_error_text)
    return
end

-- Upload from the local file to the SSH server.
success = sftp:upload_file(handle, "c:/temp/hamlet.xml")
if not success then
    print(sftp.last_error_text)
    return
end

-- -----------------------------------------------------------------------------
-- This is important.  You must close the handle on the server.
-- Otherwise open handles will accumulate on the server until eventually a limit
-- is reached and the server will fail on a call to OpenFile.
-- -----------------------------------------------------------------------------

-- Close the file.
success = sftp:close_handle(handle)
if not success then
    print(sftp.last_error_text)
    return
end

print("Success.")