Sippet.Message.fetch_header
You're seeing just the function
fetch_header
, go back to Sippet.Message module for more information.
Specs
Fetches all values for a specific header
and returns it in a tuple.
If the header
does not exist, returns :error
.
Examples:
iex> request =
...> Sippet.Message.build_request(:invite, "sip:foo@bar.com")
...> |> Sippet.Message.put_header(:content_language, ["en-US", "de-DE"])
...> |> Sippet.Message.put_header(:max_forwards, 70)
iex> request |> Sippet.Message.fetch_header(:content_language)
{:ok, ["en-US", "de-DE"]}
iex> request |> Sippet.Message.fetch_header(:cseq)
:error