Fix #386: Convert host to lowercase on URL building

aio-libs · Jul 26, 2020 · a0cdc15 · a0cdc15
1 parent 3ecfc65
commit a0cdc15
Show file tree

Hide file tree

Showing 2 changed files with 4 additions and 0 deletions.
diff --git a/CHANGES/386.feature b/CHANGES/386.feature
@@ -0,0 +1 @@
+Convert host to lowercase on URL building.
diff --git a/yarl/_url.py b/yarl/_url.py
@@ -706,6 +706,7 @@ def _encode_host(cls, host):
                 ip, sep, zone = host.partition("%")
                 ip = ip_address(ip)
             except ValueError:
+                host = host.lower()
                 # IDNA encoding is slow,
                 # skip it for ASCII-only strings
                 # Don't move the check into _idna_encode() helper
@@ -729,6 +730,8 @@ def _encode_host(cls, host):
                 ip, sep, zone = host.partition("%")
                 ip = ip_address(ip)
             except ValueError:
+                host = host.lower()
+
                 for char in host:
                     if char > "\x7f":
                         break