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?

Answer 1

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');

Answer 2

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.