Francesco Pham authored 2 years ago and Stefan Schmidt committed 2 years ago

link-local addresses require interface name to be specified.
For example a correct url with link-local ip would be the following: `coap://[fe80::c63:43ed:a8ef:2ab3%wlx1cbfcedf85d7]:5683`
We are using getnameinfo to get the correct interface name from the address. 
As a consequence, url query must be percent-encoded so that the base address is correctly decoded

Signed-off-by: Francesco Pham <francesco.pham@huawei.com>