Session URL

On command-line and in parameter of scripting command open, you can, in addition to using site name, specify an ad-hoc session using URL.

You can also paste session URL on Login dialog or main window. (This feature is available only in the latest beta release.)

Syntax

sftp|ftp|ftps|scp :// [ <username> [ : <password> ] [ ; <fingerprint> ] @ ] <host> [ : <port> ] /

Elements

The only mandatory part is host. The host can either be a host name (such as example.com), an IPv4 address (such as 127.0.0.1) or an IPv6 address surrounded by square brackets (such as [2001:db8:85a3:8d3:1319:8a2e:370:7348]).

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You should also always explicitly specify a protocol (sftp, ftp or scp, the ftps protocol is FTP over TLS/SSL).1) For all protocols WinSCP-specific alternative is supported, with winscp- prefix.

Most URL’s will include also username.

The port needs to be specified only, when it differs from the default port for the protocol (22 for sftp/scp, 21 for ftp and 990 for implicit ftps).

SSH Host Key Fingerprint

The SFTP/SCP URL can optionally contain expected SSH host key fingerprint with syntax fingerprint=<fingerprint>.

Providing the fingerprint in the session URL is mainly useful, if you need to provide all session settings using URL only, such as using a hyperlink on a web page.

For security reasons, fingerprint provided in session URL does not override any fingerprint already cached on the machine. This for instance differs from behavior, when fingerprint is provided using -hostkey switch of open command in scripting.

Format of the fingerprint for URL2) somewhat differs from format used in other WinSCP features (-hostkey switch of open command in scripting for instance). To convert WinSCP fingerprint format to URL format:

  1. Drop bit count part (the number after ssh-rsa or ssh-dsa, typically 2048 or 1024);
  2. Replace remaining space and all colons (:) with a dash sign (-).

For example WinSCP fingerprint ssh-rsa 2048 ee:f3:c1:59:4d:b4:e2:c5:da:22:3a:6e:97:a0:28:29 converts to ssh-rsa-ee-f3-c1-59-4d-b4-e2-c5-da-22-3a-6e-97-a0-28-29.

Special Characters

Special characters (like @ in username, see example below) have to be encoded using %XX syntax, where XX is hexadecimal UTF-8 code.3)

Common special characters are:

  • space: %20 or +
  • %: %25 (percent sign)
  • +: %2B (plus sign)
  • /: %2F (slash)
  • @: %40 (at sign)
  • :: %3A (colon)
  • ;: %3B (semicolon)

Examples

sftp://martin:mypassword@example.com/
sftp://root@example.com:2222/
ftp://127.0.0.1:2121/
ftp://[2001:db8:85a3:8d3:1319:8a2e:370:7348]:2121/
sftp://martin;fingerprint=ssh-dss-0b-77-8b-68-f4-45-b1-3c-87-ad-5c-be-3b-c5-72-78@example.com/

Generating

You can have WinSCP generate session URL. This feature is available only in the latest beta release.

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1) Protocol is sftp by default, but the default can be changed.
2) Fingerprint format for URL is based by draft-ietf-secsh-scp-sftp-ssh-uri.
3) For multi-byte codes, use % before every byte, for instance to represent pound-sign £ use %C2%A3.
 
  session_url.txt · Last modified: by prikryl
 

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