CODEWITHSUNDEEP
c#uri
CodingBarfield
CodingBarfield

Reputation: 3398

System.Uri Host contains trailing

After parsing http traffic I noticed that the Domains I retrieved are incorrect.

Uri www.youtube.com./somepath/index.html

I've used the following code:

var ub = new UriBuilder("www.youtube.com.");
var u = ub.Uri;
Console.WriteLine(u.Host);

Is there an easy way to fix this? I don't think the . should be in the Host.

Upvotes: 0

Views: 240

Answers (2)

DavidRR
DavidRR

Reputation: 19457

You may not have the problem that you think that you do!

Referring to the question Why is to. a valid domain name?, the accepted answer begins with:

The final dot is part of the fully qualified domain name.

Whether the browser actually resolves a domain name with a trailing period seems to depend on the domain name. For instance, this URL is displayed by both Firefox 26 and Internet Explorer 9:

http://www.youtube.com./yt/about/
                      ^

But this URL does not display:

http://stackoverflow.com./about
                        ^

To confirm the legitimacy of these two domain names, I passed them both to nslookup:

nslookup www.youtube.com.
nslookup stackoverflow.com.

And indeed, I found that each of the domain names resolved.

So, it seems that using your browser does not appear to be the authoritative method for validating a domain name by itself.

As to why certain URLs resolve in a browser with a period at the end of the domain name while others do not, that appears to be the basis for another question.

Upvotes: 0

Khurram Hassan
Khurram Hassan

Reputation: 1544

You can use this for removing beginning as well as trailing (.) dots:

string url = "www.youtube.com.";
url = url.trim(".");

Upvotes: 1

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