PortService class
Web 端 TCP 端口连通性检测服务 / TCP port reachability service for the web.
浏览器禁止任意出站 TCP 连接，因此端口检测在 Web 上不可用；所有方法均返回 表示“不可用”的结果，不抛异常 / Browsers forbid arbitrary outbound TCP connections, so port checks are unavailable on the web; every method returns a result that marks the capability as unavailable instead of throwing.
Constructors
- PortService({Duration defaultTimeout = const Duration(seconds: 3)})
-
构造 PortService / Creates a PortService.
const
Properties
- defaultTimeout → Duration
-
单次连接默认超时 / Default timeout of a single connection attempt.
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
checkPort(
{required String host, required int port, Duration? timeout}) → Future< PortCheckResult> - 检测单个端口是否可连接 / Checks whether a single port accepts connections.
-
isPortOpen(
{required String host, required int port, Duration? timeout}) → Future< bool> - checkPort 的布尔快捷方式 / Boolean shorthand for checkPort.
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
scanPorts(
{required String host, List< int> ports = const <int>[80, 443], Duration? timeout, int concurrency = 12}) → Future<List< PortCheckResult> > - 并发扫描多个端口 / Scans multiple ports with bounded concurrency.
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited