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Merged
JelleZijlstra merged 1 commit into from
Sep 6, 2026
+266 −18
Merged

Allow None ports for asyncio servers #16353

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26 changes: 26 additions & 0 deletions stdlib/@tests/test_cases/asyncio/check_create_server.py
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Original file line number Diff line number Diff line change
@@ -0,0 +1,26 @@
import asyncio
import socket


async def check_abstract_event_loop(loop: asyncio.AbstractEventLoop, sock: socket.socket) -> None:
await loop.create_server(asyncio.Protocol, None, 8000)
await loop.create_server(asyncio.Protocol, "localhost")
await loop.create_server(asyncio.Protocol, "localhost", None)
await loop.create_server(asyncio.Protocol, "localhost", 8000)
await loop.create_server(asyncio.Protocol, port=8000)
await loop.create_server(asyncio.Protocol, sock=sock)

await loop.create_server(asyncio.Protocol) # type: ignore
await loop.create_server(asyncio.Protocol, "localhost", sock=sock) # type: ignore


async def check_base_event_loop(loop: asyncio.BaseEventLoop, sock: socket.socket) -> None:
await loop.create_server(asyncio.Protocol, None, 8000)
await loop.create_server(asyncio.Protocol, "localhost")
await loop.create_server(asyncio.Protocol, "localhost", None)
await loop.create_server(asyncio.Protocol, "localhost", 8000)
await loop.create_server(asyncio.Protocol, port=8000)
await loop.create_server(asyncio.Protocol, sock=sock)

await loop.create_server(asyncio.Protocol) # type: ignore
await loop.create_server(asyncio.Protocol, "localhost", sock=sock) # type: ignore
126 changes: 117 additions & 9 deletions stdlib/asyncio/base_events.pyi
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Original file line number Diff line number Diff line change
Expand Up @@ -243,8 +243,27 @@ class BaseEventLoop(AbstractEventLoop):
async def create_server(
self,
protocol_factory: _ProtocolFactory,
host: str | Sequence[str] | None = None,
port: int = ...,
host: str | Sequence[str] | None,
port: int,
*,
family: int = 0,
flags: int = 1,
sock: None = None,
backlog: int = 100,
ssl: _SSLContext = None,
reuse_address: bool | None = None,
reuse_port: bool | None = None,
keep_alive: bool | None = None,
ssl_handshake_timeout: float | None = None,
ssl_shutdown_timeout: float | None = None,
start_serving: bool = True,
) -> Server: ...
@overload
async def create_server(
self,
protocol_factory: _ProtocolFactory,
host: str | Sequence[str],
port: int | None = None,
*,
family: int = 0,
flags: int = 1,
Expand All @@ -259,6 +278,25 @@ class BaseEventLoop(AbstractEventLoop):
start_serving: bool = True,
) -> Server: ...
@overload
async def create_server(
self,
protocol_factory: _ProtocolFactory,
host: None = None,
*,
port: int,
family: int = 0,
flags: int = 1,
sock: None = None,
backlog: int = 100,
ssl: _SSLContext = None,
reuse_address: bool | None = None,
reuse_port: bool | None = None,
keep_alive: bool | None = None,
ssl_handshake_timeout: float | None = None,
ssl_shutdown_timeout: float | None = None,
start_serving: bool = True,
) -> Server: ...
@overload
async def create_server(
self,
protocol_factory: _ProtocolFactory,
Expand All @@ -267,7 +305,7 @@ class BaseEventLoop(AbstractEventLoop):
*,
family: int = 0,
flags: int = 1,
sock: socket = ...,
sock: socket,
backlog: int = 100,
ssl: _SSLContext = None,
reuse_address: bool | None = None,
Expand All @@ -282,8 +320,8 @@ class BaseEventLoop(AbstractEventLoop):
async def create_server(
self,
protocol_factory: _ProtocolFactory,
host: str | Sequence[str] | None = None,
port: int = ...,
host: str | Sequence[str] | None,
port: int,
*,
family: int = AddressFamily.AF_UNSPEC,
flags: int = AddressInfo.AI_PASSIVE,
Expand All @@ -297,6 +335,42 @@ class BaseEventLoop(AbstractEventLoop):
start_serving: bool = True,
) -> Server: ...
@overload
async def create_server(
self,
protocol_factory: _ProtocolFactory,
host: str | Sequence[str],
port: int | None = None,
*,
family: int = AddressFamily.AF_UNSPEC,
flags: int = AddressInfo.AI_PASSIVE,
sock: None = None,
backlog: int = 100,
ssl: _SSLContext = None,
reuse_address: bool | None = None,
reuse_port: bool | None = None,
ssl_handshake_timeout: float | None = None,
ssl_shutdown_timeout: float | None = None,
start_serving: bool = True,
) -> Server: ...
@overload
async def create_server(
self,
protocol_factory: _ProtocolFactory,
host: None = None,
*,
port: int,
family: int = AddressFamily.AF_UNSPEC,
flags: int = AddressInfo.AI_PASSIVE,
sock: None = None,
backlog: int = 100,
ssl: _SSLContext = None,
reuse_address: bool | None = None,
reuse_port: bool | None = None,
ssl_handshake_timeout: float | None = None,
ssl_shutdown_timeout: float | None = None,
start_serving: bool = True,
) -> Server: ...
@overload
async def create_server(
self,
protocol_factory: _ProtocolFactory,
Expand All @@ -305,7 +379,7 @@ class BaseEventLoop(AbstractEventLoop):
*,
family: int = AddressFamily.AF_UNSPEC,
flags: int = AddressInfo.AI_PASSIVE,
sock: socket = ...,
sock: socket,
backlog: int = 100,
ssl: _SSLContext = None,
reuse_address: bool | None = None,
Expand All @@ -319,9 +393,43 @@ class BaseEventLoop(AbstractEventLoop):
async def create_server(
self,
protocol_factory: _ProtocolFactory,
host: str | Sequence[str] | None = None,
port: int = ...,
host: str | Sequence[str] | None,
port: int,
*,
family: int = AddressFamily.AF_UNSPEC,
flags: int = AddressInfo.AI_PASSIVE,
sock: None = None,
backlog: int = 100,
ssl: _SSLContext = None,
reuse_address: bool | None = None,
reuse_port: bool | None = None,
ssl_handshake_timeout: float | None = None,
start_serving: bool = True,
) -> Server: ...
@overload
async def create_server(
self,
protocol_factory: _ProtocolFactory,
host: str | Sequence[str],
port: int | None = None,
*,
family: int = AddressFamily.AF_UNSPEC,
flags: int = AddressInfo.AI_PASSIVE,
sock: None = None,
backlog: int = 100,
ssl: _SSLContext = None,
reuse_address: bool | None = None,
reuse_port: bool | None = None,
ssl_handshake_timeout: float | None = None,
start_serving: bool = True,
) -> Server: ...
@overload
async def create_server(
self,
protocol_factory: _ProtocolFactory,
host: None = None,
*,
port: int,
family: int = AddressFamily.AF_UNSPEC,
flags: int = AddressInfo.AI_PASSIVE,
sock: None = None,
Expand All @@ -341,7 +449,7 @@ class BaseEventLoop(AbstractEventLoop):
*,
family: int = AddressFamily.AF_UNSPEC,
flags: int = AddressInfo.AI_PASSIVE,
sock: socket = ...,
sock: socket,
backlog: int = 100,
ssl: _SSLContext = None,
reuse_address: bool | None = None,
Expand Down
132 changes: 123 additions & 9 deletions stdlib/asyncio/events.pyi
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -298,9 +298,49 @@ class AbstractEventLoop:
async def create_server(
self,
protocol_factory: _ProtocolFactory,
host: str | Sequence[str] | None = None,
port: int = ...,
host: str | Sequence[str] | None,
port: int,
*,
family: int = AddressFamily.AF_UNSPEC,
flags: int = AddressInfo.AI_PASSIVE,
sock: None = None,
backlog: int = 100,
ssl: _SSLContext = None,
reuse_address: bool | None = None,
reuse_port: bool | None = None,
keep_alive: bool | None = None,
ssl_handshake_timeout: float | None = None,
ssl_shutdown_timeout: float | None = None,
start_serving: bool = True,
) -> Server: ...
@overload
@abstractmethod
async def create_server(
self,
protocol_factory: _ProtocolFactory,
host: str | Sequence[str],
port: int | None = None,
*,
family: int = AddressFamily.AF_UNSPEC,
flags: int = AddressInfo.AI_PASSIVE,
sock: None = None,
backlog: int = 100,
ssl: _SSLContext = None,
reuse_address: bool | None = None,
reuse_port: bool | None = None,
keep_alive: bool | None = None,
ssl_handshake_timeout: float | None = None,
ssl_shutdown_timeout: float | None = None,
start_serving: bool = True,
) -> Server: ...
@overload
@abstractmethod
async def create_server(
self,
protocol_factory: _ProtocolFactory,
host: None = None,
*,
port: int,
family: int = AddressFamily.AF_UNSPEC,
flags: int = AddressInfo.AI_PASSIVE,
sock: None = None,
Expand All @@ -323,7 +363,7 @@ class AbstractEventLoop:
*,
family: int = AddressFamily.AF_UNSPEC,
flags: int = AddressInfo.AI_PASSIVE,
sock: socket = ...,
sock: socket,
backlog: int = 100,
ssl: _SSLContext = None,
reuse_address: bool | None = None,
Expand All @@ -339,8 +379,8 @@ class AbstractEventLoop:
async def create_server(
self,
protocol_factory: _ProtocolFactory,
host: str | Sequence[str] | None = None,
port: int = ...,
host: str | Sequence[str] | None,
port: int,
*,
family: int = AddressFamily.AF_UNSPEC,
flags: int = AddressInfo.AI_PASSIVE,
Expand All @@ -355,6 +395,44 @@ class AbstractEventLoop:
) -> Server: ...
@overload
@abstractmethod
async def create_server(
self,
protocol_factory: _ProtocolFactory,
host: str | Sequence[str],
port: int | None = None,
*,
family: int = AddressFamily.AF_UNSPEC,
flags: int = AddressInfo.AI_PASSIVE,
sock: None = None,
backlog: int = 100,
ssl: _SSLContext = None,
reuse_address: bool | None = None,
reuse_port: bool | None = None,
ssl_handshake_timeout: float | None = None,
ssl_shutdown_timeout: float | None = None,
start_serving: bool = True,
) -> Server: ...
@overload
@abstractmethod
async def create_server(
self,
protocol_factory: _ProtocolFactory,
host: None = None,
*,
port: int,
family: int = AddressFamily.AF_UNSPEC,
flags: int = AddressInfo.AI_PASSIVE,
sock: None = None,
backlog: int = 100,
ssl: _SSLContext = None,
reuse_address: bool | None = None,
reuse_port: bool | None = None,
ssl_handshake_timeout: float | None = None,
ssl_shutdown_timeout: float | None = None,
start_serving: bool = True,
) -> Server: ...
@overload
@abstractmethod
async def create_server(
self,
protocol_factory: _ProtocolFactory,
Expand All @@ -363,7 +441,7 @@ class AbstractEventLoop:
*,
family: int = AddressFamily.AF_UNSPEC,
flags: int = AddressInfo.AI_PASSIVE,
sock: socket = ...,
sock: socket,
backlog: int = 100,
ssl: _SSLContext = None,
reuse_address: bool | None = None,
Expand All @@ -378,8 +456,26 @@ class AbstractEventLoop:
async def create_server(
self,
protocol_factory: _ProtocolFactory,
host: str | Sequence[str] | None = None,
port: int = ...,
host: str | Sequence[str] | None,
port: int,
*,
family: int = AddressFamily.AF_UNSPEC,
flags: int = AddressInfo.AI_PASSIVE,
sock: None = None,
backlog: int = 100,
ssl: _SSLContext = None,
reuse_address: bool | None = None,
reuse_port: bool | None = None,
ssl_handshake_timeout: float | None = None,
start_serving: bool = True,
) -> Server: ...
@overload
@abstractmethod
async def create_server(
self,
protocol_factory: _ProtocolFactory,
host: str | Sequence[str],
port: int | None = None,
*,
family: int = AddressFamily.AF_UNSPEC,
flags: int = AddressInfo.AI_PASSIVE,
Expand All @@ -393,6 +489,24 @@ class AbstractEventLoop:
) -> Server: ...
@overload
@abstractmethod
async def create_server(
self,
protocol_factory: _ProtocolFactory,
host: None = None,
*,
port: int,
family: int = AddressFamily.AF_UNSPEC,
flags: int = AddressInfo.AI_PASSIVE,
sock: None = None,
backlog: int = 100,
ssl: _SSLContext = None,
reuse_address: bool | None = None,
reuse_port: bool | None = None,
ssl_handshake_timeout: float | None = None,
start_serving: bool = True,
) -> Server: ...
@overload
@abstractmethod
async def create_server(
self,
protocol_factory: _ProtocolFactory,
Expand All @@ -401,7 +515,7 @@ class AbstractEventLoop:
*,
family: int = AddressFamily.AF_UNSPEC,
flags: int = AddressInfo.AI_PASSIVE,
sock: socket = ...,
sock: socket,
backlog: int = 100,
ssl: _SSLContext = None,
reuse_address: bool | None = None,
Expand Down