[VALIDATOR-318] URLs with a hostname containing an underscore are not validated

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: 1.3.1 Release, 1.4.0 Release
• Assignee: Unassigned
• Reporter: Rafał Figas
• Created: 04/Apr/13 10:30
• Updated: 18/Apr/16 15:56
• Resolved: 18/Apr/16 15:54

Description

isValid returns false for following URL:

http://www.nasza_sp77.republika.pl/

which seems to be perfectly legal according to RFC:
http://tools.ietf.org/html/rfc3986#section-2.3

And a discussions here:
http://stackoverflow.com/questions/2180465/can-someone-have-a-subdomain-with-an-underscore-in-it
http://stackoverflow.com/questions/10959757/the-use-of-the-underscore-in-host-names

Test code:

String schemes[] = { "http", "https" };

UrlValidator validator = new UrlValidator(schemes, UrlValidator.NO_FRAGMENTS);
return validator.isValid("http://www.nasza_sp77.republika.pl/");

This is somewhat similar to VALIDATOR-204, but that was for path part of URL and this one is for underscore in hostname.

Issue Links

• duplicates: VALIDATOR-358 Underscores in domain names are not supported