Delphi - Indy TIdHttp.Get with large URL length

Question

I'm trying to use the GET method from Indy 10 however, my URL's length is bigger than 255 chars. And GET method only accepts "string" parameters.

body := httpCom.Get('..........wide string.........')

Delphi's compiler give me the error:

"String literals may have at most 255 elements"

Is there any solution or different third-party component to solve this?

possible duplicate of [how can delphi 'string' literals be more than 255?](http://stackoverflow.com/questions/8767899/how-can-delphi-string-literals-be-more-than-255) — bummi, Jul 23 '13 at 20:04

score 6 · Accepted Answer · answered Jul 23 '13 at 19:54

That no problem of the string type but the IDE, you can write it like this e.g.

Const
   C_URL = 'A long text with 255 Characters ....to be contionued ...'
          +'more content....to be contionued ... '
          +'more more content....to be contionued ... '
          +'enough content';
begin
  IDHTTP1.Get(C_URL);
end;

or

  IDHTTP1.Get( 'A long text with 255 Characters ....to be contionued ...'
          +'more content....to be contionued ... '
          +'more more content....to be contionued ... '
          +'enough content');

score 3 · Answer 2 · edited Oct 07 '21 at 05:59

3

TIdHTTP does not impose any limit on URL length, let alone a 255 character limit. However, an HTTP server might impose such a limit on its end, and if it does then the request should fail with an HTTP 414 Request-URI Too Long error code, per RFC 2616 Section 10.4.15:

10.4.15 414 Request-URI Too Long

The server is refusing to service the request because the Request-URI is longer than the server is willing to interpret. This rare condition is only likely to occur when a client has improperly converted a POST request to a GET request with long query information, when the client has descended into a URI "black hole" of redirection (e.g., a redirected URI prefix that points to a suffix of itself), or when the server is under attack by a client attempting to exploit security holes present in some servers using fixed-length buffers for reading or manipulating the Request-URI.

edited Oct 07 '21 at 05:59

Community

1
1

answered Jul 23 '13 at 19:40

Remy Lebeau

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I'm not getting a result error from server. Delphi's compiler give me the error: "String literals may have at most 255 elements". Code: body := httpCom.Get('..........wide string.........'); – user2611996 Jul 23 '13 at 19:47
2

Though it doesn't answer your question, I think Remy posted this answer because when someone will Google e.g. [`TIdHTTP URL length`](http://www.google.com/?q=TIdHTTP%20URL%20length) then it will result to your question and this post describes URL length limits of `TIdHTTP` control and HTTP protocol itself. And that's fine I think. – TLama Jul 23 '13 at 21:10

Delphi - Indy TIdHttp.Get with large URL length

2 Answers2