Set X-Discord-Locale header based on user settings

discord/client.py

@@ -260,6 +260,7 @@ class Client:
             http_trace=http_trace,
             captcha_handler=captcha_handler,
             max_ratelimit_timeout=max_ratelimit_timeout,
+            locale=lambda: self._connection.locale,
         )
 
         self._handlers: Dict[str, Callable[..., None]] = {

discord/http.py

@@ -31,6 +31,7 @@ import ssl
 import string
 from typing import (
     Any,
+    Callable,
     ClassVar,
     Coroutine,
     Dict,
@@ -573,6 +574,7 @@ class HTTPClient:
         http_trace: Optional[aiohttp.TraceConfig] = None,
         captcha_handler: Optional[CaptchaHandler] = None,
         max_ratelimit_timeout: Optional[float] = None,
+        locale: Callable[[], str] = lambda: 'en-US',
     ) -> None:
         self.loop: asyncio.AbstractEventLoop = loop
         self.connector: aiohttp.BaseConnector = connector or MISSING
@@ -595,6 +597,7 @@ class HTTPClient:
         self.use_clock: bool = not unsync_clock
         self.captcha_handler: Optional[CaptchaHandler] = captcha_handler
         self.max_ratelimit_timeout: Optional[float] = max(30.0, max_ratelimit_timeout) if max_ratelimit_timeout else None
+        self.get_locale: Callable[[], str] = locale
 
         self.super_properties: Dict[str, Any] = {}
         self.encoded_super_properties: str = MISSING
@@ -713,7 +716,7 @@ class HTTPClient:
             'Origin': 'https://discord.com',
             'Pragma': 'no-cache',
             'Referer': 'https://discord.com/channels/@me',
-            'Sec-CH-UA': '"Google Chrome";v="{0}", "Chromium";v="{0}", ";Not A Brand";v="99"'.format(
+            'Sec-CH-UA': '"Google Chrome";v="{0}", "Chromium";v="{0}", ";Not-A.Brand";v="24"'.format(
                 self.browser_version.split('.')[0]
             ),
             'Sec-CH-UA-Mobile': '?0',
@@ -722,7 +725,7 @@ class HTTPClient:
             'Sec-Fetch-Mode': 'cors',
             'Sec-Fetch-Site': 'same-origin',
             'User-Agent': self.user_agent,
-            'X-Discord-Locale': 'en-US',
+            'X-Discord-Locale': self.get_locale(),
             'X-Debug-Options': 'bugReporterEnabled',
             'X-Super-Properties': self.encoded_super_properties,
         }