feat: Use https scheme for IANA target URLs

Fixes #417

bibxml/xml2rfc_adapters.py

@@ -503,6 +503,23 @@ def resolve_docid(self) -> Optional[DocID]:
         return None
 
 
+    def resolve(self) -> BibliographicItem:
+        refs = self.fetch_refs()
+        if num_refs := len(refs):
+            self.log(f"{num_refs} found")
+            resolved_item = self.build_bibitem_from_refs(refs)
+            link = as_list(resolved_item.link or [])
+            for index, _ in enumerate(link):
+                parsed_link = urlparse(link[index].content)
+                if parsed_link.scheme == "http":
+                    link[index].content = \
+                        parsed_link._replace(scheme="https").geturl()
+            return resolved_item
+        else:
+            self.log("no refs found")
+            raise RefNotFoundError()
+
+
 @register_adapter('bibxml9')
 class RfcSubseriesAdapter(Xml2rfcAdapter):
     """

xml2rfc_compat/tests/test_adapters.py

@@ -161,3 +161,16 @@ def test_doi_should_replace_target_URL(self):
             for link in as_list(bibitem.link or [])
             if f"{urlparse(link.content).scheme}://{urlparse(link.content).netloc}" == "https://doi.org"
         ))
+
+    def test_iana_should_replace_target_scheme(self):
+        adapter = IanaAdapter(self.dirname, "bibxml-iana", self.iana_ref)
+        bibitem = adapter.resolve()
+        for link in as_list(bibitem.link or []):
+            if content := link.__getattribute__("content"):
+                url_parse = urlparse(content)
+                self.assertEqual(url_parse.scheme, "https")
+        self.assertTrue(any(
+            link
+            for link in as_list(bibitem.link or [])
+            if urlparse(link.content).scheme == "https"
+        ))