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import asyncio
import os
from typing import TYPE_CHECKING, Any, Callable, List, Mapping, Optional, Union
import httpx
from httpx import USE_CLIENT_DEFAULT, AsyncHTTPTransport, HTTPTransport
import litellm
from litellm.litellm_core_utils.logging_utils import track_llm_api_timing
from litellm.types.llms.custom_http import *
if TYPE_CHECKING:
from litellm import LlmProviders
from litellm.litellm_core_utils.litellm_logging import (
Logging as LiteLLMLoggingObject,
)
else:
LlmProviders = Any
LiteLLMLoggingObject = Any
try:
from litellm._version import version
except Exception:
version = "0.0.0"
headers = {
"User-Agent": f"litellm/{version}",
}
# https://www.python-httpx.org/advanced/timeouts
_DEFAULT_TIMEOUT = httpx.Timeout(timeout=5.0, connect=5.0)
_DEFAULT_TTL_FOR_HTTPX_CLIENTS = 3600 # 1 hour, re-use the same httpx client for 1 hour
def mask_sensitive_info(error_message):
# Find the start of the key parameter
if isinstance(error_message, str):
key_index = error_message.find("key=")
else:
return error_message
# If key is found
if key_index != -1:
# Find the end of the key parameter (next & or end of string)
next_param = error_message.find("&", key_index)
if next_param == -1:
# If no more parameters, mask until the end of the string
masked_message = error_message[: key_index + 4] + "[REDACTED_API_KEY]"
else:
# Replace the key with redacted value, keeping other parameters
masked_message = (
error_message[: key_index + 4]
+ "[REDACTED_API_KEY]"
+ error_message[next_param:]
)
return masked_message
return error_message
class MaskedHTTPStatusError(httpx.HTTPStatusError):
def __init__(
self, original_error, message: Optional[str] = None, text: Optional[str] = None
):
# Create a new error with the masked URL
masked_url = mask_sensitive_info(str(original_error.request.url))
# Create a new error that looks like the original, but with a masked URL
super().__init__(
message=original_error.message,
request=httpx.Request(
method=original_error.request.method,
url=masked_url,
headers=original_error.request.headers,
content=original_error.request.content,
),
response=httpx.Response(
status_code=original_error.response.status_code,
content=original_error.response.content,
headers=original_error.response.headers,
),
)
self.message = message
self.text = text
class AsyncHTTPHandler:
def __init__(
self,
timeout: Optional[Union[float, httpx.Timeout]] = None,
event_hooks: Optional[Mapping[str, List[Callable[..., Any]]]] = None,
concurrent_limit=1000,
client_alias: Optional[str] = None, # name for client in logs
ssl_verify: Optional[Union[bool, str]] = None,
):
self.timeout = timeout
self.event_hooks = event_hooks
self.client = self.create_client(
timeout=timeout,
concurrent_limit=concurrent_limit,
event_hooks=event_hooks,
ssl_verify=ssl_verify,
)
self.client_alias = client_alias
def create_client(
self,
timeout: Optional[Union[float, httpx.Timeout]],
concurrent_limit: int,
event_hooks: Optional[Mapping[str, List[Callable[..., Any]]]],
ssl_verify: Optional[Union[bool, str]] = None,
) -> httpx.AsyncClient:
# SSL certificates (a.k.a CA bundle) used to verify the identity of requested hosts.
# /path/to/certificate.pem
if ssl_verify is None:
ssl_verify = os.getenv("SSL_VERIFY", litellm.ssl_verify)
# An SSL certificate used by the requested host to authenticate the client.
# /path/to/client.pem
cert = os.getenv("SSL_CERTIFICATE", litellm.ssl_certificate)
if timeout is None:
timeout = _DEFAULT_TIMEOUT
# Create a client with a connection pool
transport = self._create_async_transport()
return httpx.AsyncClient(
transport=transport,
event_hooks=event_hooks,
timeout=timeout,
limits=httpx.Limits(
max_connections=concurrent_limit,
max_keepalive_connections=concurrent_limit,
),
verify=ssl_verify,
cert=cert,
headers=headers,
)
async def close(self):
# Close the client when you're done with it
await self.client.aclose()
async def __aenter__(self):
return self.client
async def __aexit__(self):
# close the client when exiting
await self.client.aclose()
async def get(
self,
url: str,
params: Optional[dict] = None,
headers: Optional[dict] = None,
follow_redirects: Optional[bool] = None,
):
# Set follow_redirects to UseClientDefault if None
_follow_redirects = (
follow_redirects if follow_redirects is not None else USE_CLIENT_DEFAULT
)
response = await self.client.get(
url, params=params, headers=headers, follow_redirects=_follow_redirects # type: ignore
)
return response
@track_llm_api_timing()
async def post(
self,
url: str,
data: Optional[Union[dict, str]] = None, # type: ignore
json: Optional[dict] = None,
params: Optional[dict] = None,
headers: Optional[dict] = None,
timeout: Optional[Union[float, httpx.Timeout]] = None,
stream: bool = False,
logging_obj: Optional[LiteLLMLoggingObject] = None,
):
try:
if timeout is None:
timeout = self.timeout
req = self.client.build_request(
"POST", url, data=data, json=json, params=params, headers=headers, timeout=timeout # type: ignore
)
response = await self.client.send(req, stream=stream)
response.raise_for_status()
return response
except (httpx.RemoteProtocolError, httpx.ConnectError):
# Retry the request with a new session if there is a connection error
new_client = self.create_client(
timeout=timeout, concurrent_limit=1, event_hooks=self.event_hooks
)
try:
return await self.single_connection_post_request(
url=url,
client=new_client,
data=data,
json=json,
params=params,
headers=headers,
stream=stream,
)
finally:
await new_client.aclose()
except httpx.TimeoutException as e:
headers = {}
error_response = getattr(e, "response", None)
if error_response is not None:
for key, value in error_response.headers.items():
headers["response_headers-{}".format(key)] = value
raise litellm.Timeout(
message=f"Connection timed out after {timeout} seconds.",
model="default-model-name",
llm_provider="litellm-httpx-handler",
headers=headers,
)
except httpx.HTTPStatusError as e:
if stream is True:
setattr(e, "message", await e.response.aread())
setattr(e, "text", await e.response.aread())
else:
setattr(e, "message", mask_sensitive_info(e.response.text))
setattr(e, "text", mask_sensitive_info(e.response.text))
setattr(e, "status_code", e.response.status_code)
raise e
except Exception as e:
raise e
async def put(
self,
url: str,
data: Optional[Union[dict, str]] = None, # type: ignore
json: Optional[dict] = None,
params: Optional[dict] = None,
headers: Optional[dict] = None,
timeout: Optional[Union[float, httpx.Timeout]] = None,
stream: bool = False,
):
try:
if timeout is None:
timeout = self.timeout
req = self.client.build_request(
"PUT", url, data=data, json=json, params=params, headers=headers, timeout=timeout # type: ignore
)
response = await self.client.send(req)
response.raise_for_status()
return response
except (httpx.RemoteProtocolError, httpx.ConnectError):
# Retry the request with a new session if there is a connection error
new_client = self.create_client(
timeout=timeout, concurrent_limit=1, event_hooks=self.event_hooks
)
try:
return await self.single_connection_post_request(
url=url,
client=new_client,
data=data,
json=json,
params=params,
headers=headers,
stream=stream,
)
finally:
await new_client.aclose()
except httpx.TimeoutException as e:
headers = {}
error_response = getattr(e, "response", None)
if error_response is not None:
for key, value in error_response.headers.items():
headers["response_headers-{}".format(key)] = value
raise litellm.Timeout(
message=f"Connection timed out after {timeout} seconds.",
model="default-model-name",
llm_provider="litellm-httpx-handler",
headers=headers,
)
except httpx.HTTPStatusError as e:
setattr(e, "status_code", e.response.status_code)
if stream is True:
setattr(e, "message", await e.response.aread())
else:
setattr(e, "message", e.response.text)
raise e
except Exception as e:
raise e
async def patch(
self,
url: str,
data: Optional[Union[dict, str]] = None, # type: ignore
json: Optional[dict] = None,
params: Optional[dict] = None,
headers: Optional[dict] = None,
timeout: Optional[Union[float, httpx.Timeout]] = None,
stream: bool = False,
):
try:
if timeout is None:
timeout = self.timeout
req = self.client.build_request(
"PATCH", url, data=data, json=json, params=params, headers=headers, timeout=timeout # type: ignore
)
response = await self.client.send(req)
response.raise_for_status()
return response
except (httpx.RemoteProtocolError, httpx.ConnectError):
# Retry the request with a new session if there is a connection error
new_client = self.create_client(
timeout=timeout, concurrent_limit=1, event_hooks=self.event_hooks
)
try:
return await self.single_connection_post_request(
url=url,
client=new_client,
data=data,
json=json,
params=params,
headers=headers,
stream=stream,
)
finally:
await new_client.aclose()
except httpx.TimeoutException as e:
headers = {}
error_response = getattr(e, "response", None)
if error_response is not None:
for key, value in error_response.headers.items():
headers["response_headers-{}".format(key)] = value
raise litellm.Timeout(
message=f"Connection timed out after {timeout} seconds.",
model="default-model-name",
llm_provider="litellm-httpx-handler",
headers=headers,
)
except httpx.HTTPStatusError as e:
setattr(e, "status_code", e.response.status_code)
if stream is True:
setattr(e, "message", await e.response.aread())
else:
setattr(e, "message", e.response.text)
raise e
except Exception as e:
raise e
async def delete(
self,
url: str,
data: Optional[Union[dict, str]] = None, # type: ignore
json: Optional[dict] = None,
params: Optional[dict] = None,
headers: Optional[dict] = None,
timeout: Optional[Union[float, httpx.Timeout]] = None,
stream: bool = False,
):
try:
if timeout is None:
timeout = self.timeout
req = self.client.build_request(
"DELETE", url, data=data, json=json, params=params, headers=headers, timeout=timeout # type: ignore
)
response = await self.client.send(req, stream=stream)
response.raise_for_status()
return response
except (httpx.RemoteProtocolError, httpx.ConnectError):
# Retry the request with a new session if there is a connection error
new_client = self.create_client(
timeout=timeout, concurrent_limit=1, event_hooks=self.event_hooks
)
try:
return await self.single_connection_post_request(
url=url,
client=new_client,
data=data,
json=json,
params=params,
headers=headers,
stream=stream,
)
finally:
await new_client.aclose()
except httpx.HTTPStatusError as e:
setattr(e, "status_code", e.response.status_code)
if stream is True:
setattr(e, "message", await e.response.aread())
else:
setattr(e, "message", e.response.text)
raise e
except Exception as e:
raise e
async def single_connection_post_request(
self,
url: str,
client: httpx.AsyncClient,
data: Optional[Union[dict, str]] = None, # type: ignore
json: Optional[dict] = None,
params: Optional[dict] = None,
headers: Optional[dict] = None,
stream: bool = False,
):
"""
Making POST request for a single connection client.
Used for retrying connection client errors.
"""
req = client.build_request(
"POST", url, data=data, json=json, params=params, headers=headers # type: ignore
)
response = await client.send(req, stream=stream)
response.raise_for_status()
return response
def __del__(self) -> None:
try:
asyncio.get_running_loop().create_task(self.close())
except Exception:
pass
def _create_async_transport(self) -> Optional[AsyncHTTPTransport]:
"""
Create an async transport with IPv4 only if litellm.force_ipv4 is True.
Otherwise, return None.
Some users have seen httpx ConnectionError when using ipv6 - forcing ipv4 resolves the issue for them
"""
if litellm.force_ipv4:
return AsyncHTTPTransport(local_address="0.0.0.0")
else:
return None
class HTTPHandler:
def __init__(
self,
timeout: Optional[Union[float, httpx.Timeout]] = None,
concurrent_limit=1000,
client: Optional[httpx.Client] = None,
ssl_verify: Optional[Union[bool, str]] = None,
):
if timeout is None:
timeout = _DEFAULT_TIMEOUT
# SSL certificates (a.k.a CA bundle) used to verify the identity of requested hosts.
# /path/to/certificate.pem
if ssl_verify is None:
ssl_verify = os.getenv("SSL_VERIFY", litellm.ssl_verify)
# An SSL certificate used by the requested host to authenticate the client.
# /path/to/client.pem
cert = os.getenv("SSL_CERTIFICATE", litellm.ssl_certificate)
if client is None:
transport = self._create_sync_transport()
# Create a client with a connection pool
self.client = httpx.Client(
transport=transport,
timeout=timeout,
limits=httpx.Limits(
max_connections=concurrent_limit,
max_keepalive_connections=concurrent_limit,
),
verify=ssl_verify,
cert=cert,
headers=headers,
)
else:
self.client = client
def close(self):
# Close the client when you're done with it
self.client.close()
def get(
self,
url: str,
params: Optional[dict] = None,
headers: Optional[dict] = None,
follow_redirects: Optional[bool] = None,
):
# Set follow_redirects to UseClientDefault if None
_follow_redirects = (
follow_redirects if follow_redirects is not None else USE_CLIENT_DEFAULT
)
response = self.client.get(
url, params=params, headers=headers, follow_redirects=_follow_redirects # type: ignore
)
return response
def post(
self,
url: str,
data: Optional[Union[dict, str]] = None,
json: Optional[Union[dict, str, List]] = None,
params: Optional[dict] = None,
headers: Optional[dict] = None,
stream: bool = False,
timeout: Optional[Union[float, httpx.Timeout]] = None,
files: Optional[dict] = None,
content: Any = None,
logging_obj: Optional[LiteLLMLoggingObject] = None,
):
try:
if timeout is not None:
req = self.client.build_request(
"POST",
url,
data=data, # type: ignore
json=json,
params=params,
headers=headers,
timeout=timeout,
files=files,
content=content, # type: ignore
)
else:
req = self.client.build_request(
"POST", url, data=data, json=json, params=params, headers=headers, files=files, content=content # type: ignore
)
response = self.client.send(req, stream=stream)
response.raise_for_status()
return response
except httpx.TimeoutException:
raise litellm.Timeout(
message=f"Connection timed out after {timeout} seconds.",
model="default-model-name",
llm_provider="litellm-httpx-handler",
)
except httpx.HTTPStatusError as e:
if stream is True:
setattr(e, "message", mask_sensitive_info(e.response.read()))
setattr(e, "text", mask_sensitive_info(e.response.read()))
else:
error_text = mask_sensitive_info(e.response.text)
setattr(e, "message", error_text)
setattr(e, "text", error_text)
setattr(e, "status_code", e.response.status_code)
raise e
except Exception as e:
raise e
def patch(
self,
url: str,
data: Optional[Union[dict, str]] = None,
json: Optional[Union[dict, str]] = None,
params: Optional[dict] = None,
headers: Optional[dict] = None,
stream: bool = False,
timeout: Optional[Union[float, httpx.Timeout]] = None,
):
try:
if timeout is not None:
req = self.client.build_request(
"PATCH", url, data=data, json=json, params=params, headers=headers, timeout=timeout # type: ignore
)
else:
req = self.client.build_request(
"PATCH", url, data=data, json=json, params=params, headers=headers # type: ignore
)
response = self.client.send(req, stream=stream)
response.raise_for_status()
return response
except httpx.TimeoutException:
raise litellm.Timeout(
message=f"Connection timed out after {timeout} seconds.",
model="default-model-name",
llm_provider="litellm-httpx-handler",
)
except httpx.HTTPStatusError as e:
if stream is True:
setattr(e, "message", mask_sensitive_info(e.response.read()))
setattr(e, "text", mask_sensitive_info(e.response.read()))
else:
error_text = mask_sensitive_info(e.response.text)
setattr(e, "message", error_text)
setattr(e, "text", error_text)
setattr(e, "status_code", e.response.status_code)
raise e
except Exception as e:
raise e
def put(
self,
url: str,
data: Optional[Union[dict, str]] = None,
json: Optional[Union[dict, str]] = None,
params: Optional[dict] = None,
headers: Optional[dict] = None,
stream: bool = False,
timeout: Optional[Union[float, httpx.Timeout]] = None,
):
try:
if timeout is not None:
req = self.client.build_request(
"PUT", url, data=data, json=json, params=params, headers=headers, timeout=timeout # type: ignore
)
else:
req = self.client.build_request(
"PUT", url, data=data, json=json, params=params, headers=headers # type: ignore
)
response = self.client.send(req, stream=stream)
return response
except httpx.TimeoutException:
raise litellm.Timeout(
message=f"Connection timed out after {timeout} seconds.",
model="default-model-name",
llm_provider="litellm-httpx-handler",
)
except Exception as e:
raise e
def __del__(self) -> None:
try:
self.close()
except Exception:
pass
def _create_sync_transport(self) -> Optional[HTTPTransport]:
"""
Create an HTTP transport with IPv4 only if litellm.force_ipv4 is True.
Otherwise, return None.
Some users have seen httpx ConnectionError when using ipv6 - forcing ipv4 resolves the issue for them
"""
if litellm.force_ipv4:
return HTTPTransport(local_address="0.0.0.0")
else:
return None
def get_async_httpx_client(
llm_provider: Union[LlmProviders, httpxSpecialProvider],
params: Optional[dict] = None,
) -> AsyncHTTPHandler:
"""
Retrieves the async HTTP client from the cache
If not present, creates a new client
Caches the new client and returns it.
"""
_params_key_name = ""
if params is not None:
for key, value in params.items():
try:
_params_key_name += f"{key}_{value}"
except Exception:
pass
_cache_key_name = "async_httpx_client" + _params_key_name + llm_provider
_cached_client = litellm.in_memory_llm_clients_cache.get_cache(_cache_key_name)
if _cached_client:
return _cached_client
if params is not None:
_new_client = AsyncHTTPHandler(**params)
else:
_new_client = AsyncHTTPHandler(
timeout=httpx.Timeout(timeout=600.0, connect=5.0)
)
litellm.in_memory_llm_clients_cache.set_cache(
key=_cache_key_name,
value=_new_client,
ttl=_DEFAULT_TTL_FOR_HTTPX_CLIENTS,
)
return _new_client
def _get_httpx_client(params: Optional[dict] = None) -> HTTPHandler:
"""
Retrieves the HTTP client from the cache
If not present, creates a new client
Caches the new client and returns it.
"""
_params_key_name = ""
if params is not None:
for key, value in params.items():
try:
_params_key_name += f"{key}_{value}"
except Exception:
pass
_cache_key_name = "httpx_client" + _params_key_name
_cached_client = litellm.in_memory_llm_clients_cache.get_cache(_cache_key_name)
if _cached_client:
return _cached_client
if params is not None:
_new_client = HTTPHandler(**params)
else:
_new_client = HTTPHandler(timeout=httpx.Timeout(timeout=600.0, connect=5.0))
litellm.in_memory_llm_clients_cache.set_cache(
key=_cache_key_name,
value=_new_client,
ttl=_DEFAULT_TTL_FOR_HTTPX_CLIENTS,
)
return _new_client
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