refactor: move url_utils to litellm_core_utils to avoid proxy dependency

SDK core modules (image_handling, token_counter) should not import
from litellm.proxy. Move url_utils.py to litellm_core_utils/ so
bare SDK installs without proxy dependencies still work.

litellm/litellm_core_utils/prompt_templates/image_handling.py

@@ -10,7 +10,7 @@ import litellm
 from litellm import verbose_logger
 from litellm.caching.caching import InMemoryCache
 from litellm.constants import MAX_IMAGE_URL_DOWNLOAD_SIZE_MB
-from litellm.proxy.common_utils.url_utils import async_safe_get, safe_get
+from litellm.litellm_core_utils.url_utils import async_safe_get, safe_get
 
 MAX_IMGS_IN_MEMORY = 10
 

litellm/litellm_core_utils/token_counter.py

@@ -30,7 +30,7 @@ from litellm.constants import (
 )
 from litellm.litellm_core_utils.default_encoding import encoding as default_encoding
 from litellm.llms.custom_httpx.http_handler import _get_httpx_client
-from litellm.proxy.common_utils.url_utils import safe_get
+from litellm.litellm_core_utils.url_utils import safe_get
 from litellm.types.llms.anthropic import (
     AnthropicMessagesToolResultParam,
     AnthropicMessagesToolUseParam,

litellm/proxy/_experimental/mcp_server/openapi_to_mcp_generator.py

@@ -15,7 +15,7 @@ from litellm.llms.custom_httpx.http_handler import (
     get_async_httpx_client,
     httpxSpecialProvider,
 )
-from litellm.proxy.common_utils.url_utils import async_safe_get
+from litellm.litellm_core_utils.url_utils import async_safe_get
 from litellm.proxy._experimental.mcp_server.tool_registry import (
     global_mcp_tool_registry,
 )

litellm/rag/ingestion/base_ingestion.py

@@ -24,7 +24,7 @@ from litellm.llms.custom_httpx.http_handler import (
     get_async_httpx_client,
     httpxSpecialProvider,
 )
-from litellm.proxy.common_utils.url_utils import async_safe_get
+from litellm.litellm_core_utils.url_utils import async_safe_get
 from litellm.rag.ingestion.file_parsers import extract_text_from_pdf
 from litellm.rag.text_splitters import RecursiveCharacterTextSplitter
 from litellm.types.rag import RAGIngestOptions, RAGIngestResponse

tests/test_litellm/litellm_core_utils/test_url_utils.py

@@ -1,7 +1,7 @@
 import pytest
 
 import litellm
-from litellm.proxy.common_utils.url_utils import SSRFError, _is_blocked_ip, validate_url
+from litellm.litellm_core_utils.url_utils import SSRFError, _is_blocked_ip, validate_url
 
 
 class TestIsBlockedIp: