fix(router.py): fix setting httpx mounts

litellm/utils.py

@@ -42,6 +42,8 @@ import httpx
 import openai
 import requests
 import tiktoken
+from httpx import Proxy
+from httpx._utils import get_environment_proxies
 from pydantic import BaseModel
 from tokenizers import Tokenizer
 
@@ -4803,6 +4805,34 @@ def get_provider_fields(custom_llm_provider: str) -> List[ProviderField]:
         return []
 
 
+def create_proxy_transport_and_mounts():
+    proxies = {
+        key: None if url is None else Proxy(url=url)
+        for key, url in get_environment_proxies().items()
+    }
+
+    sync_proxy_mounts = {}
+    async_proxy_mounts = {}
+
+    # Retrieve NO_PROXY environment variable
+    no_proxy = os.getenv("NO_PROXY", None)
+    no_proxy_urls = no_proxy.split(",") if no_proxy else []
+
+    for key, proxy in proxies.items():
+        if proxy is None:
+            sync_proxy_mounts[key] = httpx.HTTPTransport()
+            async_proxy_mounts[key] = httpx.AsyncHTTPTransport()
+        else:
+            sync_proxy_mounts[key] = httpx.HTTPTransport(proxy=proxy)
+            async_proxy_mounts[key] = httpx.AsyncHTTPTransport(proxy=proxy)
+
+    for url in no_proxy_urls:
+        sync_proxy_mounts[url] = httpx.HTTPTransport()
+        async_proxy_mounts[url] = httpx.AsyncHTTPTransport()
+
+    return sync_proxy_mounts, async_proxy_mounts
+
+
 def validate_environment(model: Optional[str] = None) -> dict:
     """
     Checks if the environment variables are valid for the given model.