feat: introduce HTTPMethod enum for improved method handling in http_client

Author: myhloli

mineru_vl_utils/vlm_client/http_client.py

@@ -2,6 +2,7 @@
 import json
 import os
 import re
+from enum import Enum
 from typing import AsyncIterable, Iterable, Sequence
 
 import httpx
@@ -35,6 +36,16 @@ def _get_env(key: str, default: str | None = None) -> str:
     raise ValueError(f"Environment variable {key} is not set.")
 
 
+class HTTPMethod(str, Enum):
+    HEAD = "HEAD"
+    GET = "GET"
+    PUT = "PUT"
+    DELETE = "DELETE"
+    OPTIONS = "OPTIONS"
+    TRACE = "TRACE"
+    POST = "POST"
+
+
 class HttpVlmClient(VlmClient):
     def __init__(
         self,
@@ -120,6 +131,7 @@ def _new_client(self) -> httpx.Client:
                 retry=Retry(
                     total=self.max_retries,
                     backoff_factor=self.retry_backoff_factor,
+                    allowed_methods=list(HTTPMethod),
                 ),
                 transport=httpx.HTTPTransport(
                     limits=httpx.Limits(
@@ -144,6 +156,7 @@ async def _new_aio_client(self) -> httpx.AsyncClient:
                 retry=Retry(
                     total=self.max_retries,
                     backoff_factor=self.retry_backoff_factor,
+                    allowed_methods=list(HTTPMethod),
                 ),
                 transport=httpx.AsyncHTTPTransport(
                     limits=httpx.Limits(