[ruby-core:79317] [Ruby trunk Bug#13171] URI::FTP path has a trailing slash when just hostname and scheme provided

Issue #13171 has been updated by Matthew Kerwin.


Comments about RFC 1738 being "obsolete" notwithstanding, the slash between host/port and url-path is optional when the url-path is empty. Specifically, there is no prohibition on including it.

Section 3.1 ("Common Internet Scheme Syntax"):

> Some or all of the parts "\<user>:\<password>@", ":\<password>",
> ":\<port>", and "/\<url-path>" may be excluded.

and:

> url-path
>> The rest of the locator consists of data specific to the
>> scheme, and is known as the "url-path". It supplies the
>> details of how the specified resource can be accessed. Note
>> that the "/" between the host (or port) and the url-path is
>> NOT part of the url-path.

Section 3.2.2. ("FTP url-path"):

> The url-path of a FTP URL has the following syntax:
>
>~~~
> <cwd1>/<cwd2>/.../<cwdN>/<name>;type=<typecode>
>~~~

So according to the text the slash is purely presentational and has no bearing on the path of the URL. This is reflected in the documentation for [URI::File#path](http://ruby-doc.org/stdlib-2.4.0/libdoc/uri/rdoc/URI/FTP.html#method-i-path)

Also please note the specification of how to interpret the path elements *after* that initial slash: https://tools.ietf.org/html/rfc1738#section-3.2.2

Cheers

----------------------------------------
Bug #13171: URI::FTP path has a trailing slash when just hostname and scheme provided
https://bugs.ruby-lang.org/issues/13171#change-62727

* Author: Milo Price
* Status: Open
* Priority: Normal
* Assignee: 
* Target version: 
* ruby -v: 
* Backport: 2.2: UNKNOWN, 2.3: UNKNOWN, 2.4: UNKNOWN
----------------------------------------
As with HTTP uris, the trailing slash on a FTP uri should be optional, per RFC 1738 (ftp://ftp.funet.fi/pub/doc/rfc/rfc1738.txt). However, under the current implementation, URI::FTP#to_s always has a trailing slash when only a hostname is provided (i.e., no path):

~~~ ruby
URI.parse("http://example.com").to_s
=> "http://example.com"
URI.parse("ftp://example.com").to_s
=> "ftp://example.com/"
~~~








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