Initial commit: doujinshi-dl generic plugin framework

History reset as part of DMCA compliance. The project has been
refactored into a generic, site-agnostic download framework.
Site-specific logic lives in separate plugin packages.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

doujinshi_dl/core/utils/http.py

@@ -0,0 +1,34 @@
+# coding: utf-8
+"""Generic async HTTP request helper (no site-specific headers injected here)."""
+import httpx
+import urllib3.exceptions
+
+urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)
+
+
+async def async_request(method, url, proxy=None, **kwargs):
+    """
+    Thin async HTTP client wrapper.
+
+    Header injection (Cookie, User-Agent, Referer) is done by callers that
+    have access to site-specific configuration; this helper stays generic.
+    """
+    from doujinshi_dl import constant
+
+    headers = kwargs.pop('headers', {})
+
+    if proxy is None:
+        proxy = constant.CONFIG.get('proxy', '')
+
+    if isinstance(proxy, str) and not proxy:
+        proxy = None
+
+    # Remove 'timeout' from kwargs to avoid duplicate keyword argument since
+    # httpx.AsyncClient accepts it as a constructor arg or request arg.
+    timeout = kwargs.pop('timeout', 30)
+
+    async with httpx.AsyncClient(headers=headers, verify=False, proxy=proxy,
+                                 timeout=timeout) as client:
+        response = await client.request(method, url, **kwargs)
+
+    return response