? in URLs results in HTTP 400

[fatih 0]

Hello. I use SslHttpCli1 and SslContext1 to get URLs (ICS v9.0). I found a problem which Indy idHttp works fine.

 

This results Http 200: https://test.com/?test
This results Http 400: https://test.com?test

 

How can I solve it?

[Angus Robertson 526]

Technically, https://test.com?test is an invalid URL, since there is no path included in the URL,

 

Without the query parameter, ICS would add path / automatically, so probably should do so for the query parameter as well, that is what my Firefox browser seems to do.

 

Will fix it next week. 

 

If you want to do it yourself, in THttpCli.DoRequestAsync change:

 

if FPath = '' then FPath := '/';    to 

if Pos('/', FPath) <> 1 then FPath := '/' + FPath;

 

Angus

 

[fatih 0]

Thank you very much!

[Remy Lebeau 1260]

4 hours ago, Angus Robertson said:

Technically, https://test.com?test is an invalid URL, since there is no path included in the URL,

That is not correct.  Technically, the path component is allowed to be empty in any url, per RFC 3986 sections 3 and 3.3:

      URI         = scheme ":" hier-part [ "?" query ] [ "#" fragment ]

      hier-part   = "//" authority path-abempty
                  / path-absolute
                  / path-rootless
                  / path-empty

      path-abempty  = *( "/" segment )
      path-absolute = "/" [ segment-nz *( "/" segment ) ]
      path-noscheme = segment-nz-nc *( "/" segment )
      path-rootless = segment-nz *( "/" segment )
      path-empty    = 0<pchar>

RFC 2616 section 3.2.2 tried to restrict an HTTP url to require a non-empty absolute path if the query component is present:

http_URL = "http:" "//" host [ ":" port ] [ abs_path [ "?" query ]]

But, RFC 2616 section 5.1.2 does allow the path in an HTTP url to be empty:

Quote

Note that the absolute path cannot be empty; if none is present in the original URI, it MUST be given as "/" (the server root).

RFC 7230 sections 2.7.1 and 2.7.2 loosen the restriction to allow the path in HTTP and HTTPS urls to be empty:

     http-URI = "http:" "//" authority path-abempty [ "?" query ]
                [ "#" fragment ]

     https-URI = "https:" "//" authority path-abempty [ "?" query ]
                 [ "#" fragment ]

4 hours ago, Angus Robertson said:

If you want to do it yourself, in THttpCli.DoRequestAsync change:

 

if FPath = '' then FPath := '/';    to 

if Pos('/', FPath) <> 1 then FPath := '/' + FPath;

Why would you an inefficient "Pos" check instead of using something like StartsText() instead?  Or simply: "if (FPath = '') or (FPath[1] <> '/')" ?

Edited March 26 by Remy Lebeau