11 Vote

Lazarus: Set User-Agent in TFPHttpClient

Question by Guest | Last update on 2022-10-31 | Created on 2018-04-24

I am using the FPHttpClient to download some websites from the Internet with my Lazarus program.

Now I would like to customize the UserAgent, which is used in the header of my request when retrieving a site. Is there any possibility do adjust this?

1Best Answer1 Vote

The TFPHttpClient provides the AddHeader function, which allows you to add any headers you want to your request.

AddHeader takes two parameters, the name of the header and the value. To set the user agent for example to Mozilla/5.0, it would be this:

AddHeader('User-Agent', 'Mozilla/5.0');

Altogether, the call can be implemented like that:

hc := TFPHttpClient.Create(Nil);
  hc.AddHeader('User-Agent', 'Mozilla/5.0');
  html := hc.Get(url);

Of course, instead of Mozilla/5.0, you can also pass any other string of your desire.
Last update on 2022-10-31 | Created on 2018-04-25

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