From 4ba9d6b136fc30ff997c322a0e36b107406e9201 Mon Sep 17 00:00:00 2001
From: mateo-berri <277851410+mateo-berri@users.noreply.github.com>
Date: Sun, 16 Aug 2026 14:29:21 -0700
Subject: [PATCH] fix(proxy): expose url join helper at module level for
 websocket route

---
 .../pass_through_endpoints/llm_passthrough_endpoints.py  | 6 +-----
 .../test_llm_pass_through_endpoints.py                   | 9 +++++----
 2 files changed, 6 insertions(+), 9 deletions(-)

diff --git a/litellm/proxy/pass_through_endpoints/llm_passthrough_endpoints.py b/litellm/proxy/pass_through_endpoints/llm_passthrough_endpoints.py
index d9c76aaeae3..96e32ccf827 100644
--- a/litellm/proxy/pass_through_endpoints/llm_passthrough_endpoints.py
+++ b/litellm/proxy/pass_through_endpoints/llm_passthrough_endpoints.py
@@ -2086,7 +2086,7 @@ class BaseOpenAIPassThroughHandler:
 
         # Construct the full target URL by properly joining the base URL and endpoint path
         base_url: Final = httpx.URL(base_target_url)
-        updated_url: Final = BaseOpenAIPassThroughHandler._join_url_paths(
+        updated_url: Final = _join_url_paths(
             base_url=base_url,
             path=encoded_endpoint,
             custom_llm_provider=custom_llm_provider,
@@ -2145,10 +2145,6 @@ class BaseOpenAIPassThroughHandler:
             request=request,
         )
 
-    @staticmethod
-    def _join_url_paths(base_url: httpx.URL, path: str, custom_llm_provider: litellm.LlmProviders) -> str:
-        return _join_url_paths(base_url=base_url, path=path, custom_llm_provider=custom_llm_provider)
-
 
 @router.api_route(
     "/cursor/{endpoint:path}",
diff --git a/tests/test_litellm/proxy/pass_through_endpoints/test_llm_pass_through_endpoints.py b/tests/test_litellm/proxy/pass_through_endpoints/test_llm_pass_through_endpoints.py
index 8080ca71773..9e6a2d42757 100644
--- a/tests/test_litellm/proxy/pass_through_endpoints/test_llm_pass_through_endpoints.py
+++ b/tests/test_litellm/proxy/pass_through_endpoints/test_llm_pass_through_endpoints.py
@@ -19,6 +19,7 @@ import litellm
 from litellm.proxy.pass_through_endpoints.llm_passthrough_endpoints import (
     BaseOpenAIPassThroughHandler,
     RouteChecks,
+    _join_url_paths,
     azure_proxy_route,
     bedrock_llm_proxy_route,
     create_pass_through_route,
@@ -74,7 +75,7 @@ class TestBaseOpenAIPassThroughHandler:
         # Test joining base URL with no path and a path
         base_url = httpx.URL("https://api.example.com")
         path = "/v1/chat/completions"
-        result = BaseOpenAIPassThroughHandler._join_url_paths(
+        result = _join_url_paths(
             base_url, path, litellm.LlmProviders.OPENAI.value
         )
         print(f"Base URL with no path: '{base_url}' + '{path}' → '{result}'")
@@ -83,7 +84,7 @@ class TestBaseOpenAIPassThroughHandler:
         # Test joining base URL with path and another path
         base_url = httpx.URL("https://api.example.com/v1")
         path = "/chat/completions"
-        result = BaseOpenAIPassThroughHandler._join_url_paths(
+        result = _join_url_paths(
             base_url, path, litellm.LlmProviders.OPENAI.value
         )
         print(f"Base URL with path: '{base_url}' + '{path}' → '{result}'")
@@ -92,7 +93,7 @@ class TestBaseOpenAIPassThroughHandler:
         # Test with path not starting with slash
         base_url = httpx.URL("https://api.example.com/v1")
         path = "chat/completions"
-        result = BaseOpenAIPassThroughHandler._join_url_paths(
+        result = _join_url_paths(
             base_url, path, litellm.LlmProviders.OPENAI.value
         )
         print(f"Path without leading slash: '{base_url}' + '{path}' → '{result}'")
@@ -101,7 +102,7 @@ class TestBaseOpenAIPassThroughHandler:
         # Test with base URL having trailing slash
         base_url = httpx.URL("https://api.example.com/v1/")
         path = "/chat/completions"
-        result = BaseOpenAIPassThroughHandler._join_url_paths(
+        result = _join_url_paths(
             base_url, path, litellm.LlmProviders.OPENAI.value
         )
         print(f"Base URL with trailing slash: '{base_url}' + '{path}' → '{result}'")