set build status using REST API won't accept a valid url

Hello

I am building some service using the REST API 2.0:

/2.0/repositories/

{username}

/

{repo_slug}

/commit/

{node}

/statuses/build

one of the parameters is a url. I am providing: (for example)

http://jenkins:8080

and it says it is an invalid url

{"type": "error", "error": {"fields":

{"url": ["Enter a valid URL."]}

, "message": "url: Enter a valid URL."}}

while putting the next url: http://<actual jenkins ip>:8080
results with a success.
Please, I need this to be fixed. I am using later on a library that can only use the redirect IP, which is the "jenkins" one.

Thank you.