WebSocket class - dart:io library

Constructors

WebSocket()
WebSocket.fromUpgradedSocket(Socket socket, { String protocol, bool serverSide, CompressionOptions compression: CompressionOptions.compressionDefault }): Creates a WebSocket from an already-upgraded socket. [...]
factory

Properties

closeCode → int: The close code set when the WebSocket connection is closed. If there is no close code available this property will be null
read-only
closeReason → String: The close reason set when the WebSocket connection is closed. If there is no close reason available this property will be null
read-only
extensions → String: The extensions property is initially the empty string. After the WebSocket connection is established this string reflects the extensions used by the server.
read-only
pingInterval ↔ Duration: Set and get the interval for sending ping signals. If a ping message is not answered by a pong message from the peer, the WebSocket is assumed disconnected and the connection is closed with a WebSocketStatus.GOING_AWAY close code. When a ping signal is sent, the pong message must be received within pingInterval. [...]
read / write
protocol → String: The protocol property is initially the empty string. After the WebSocket connection is established the value is the subprotocol selected by the server. If no subprotocol is negotiated the value will remain null.
read-only
readyState → int: Returns the current state of the connection.
read-only
done → Future: Return a future which is completed when the StreamSink is finished. [...]
read-only, inherited
first → Future: The first element of the stream. [...]
read-only, inherited
hashCode → int: The hash code for this object. [...]
read-only, inherited
isBroadcast → bool: Whether this stream is a broadcast stream.
read-only, inherited
isEmpty → Future<bool>: Whether this stream contains any elements. [...]
read-only, inherited
last → Future: The last element of this stream. [...]
read-only, inherited
length → Future<int>: The number of elements in this stream. [...]
read-only, inherited
runtimeType → Type: A representation of the runtime type of the object.
read-only, inherited
single → Future: The single element of this stream. [...]
read-only, inherited

Methods

add(dynamic data) → void: Sends data on the WebSocket connection. The data in data must be either a String, or a List<int> holding bytes.
addStream(Stream stream) → Future: Sends data from a stream on WebSocket connection. Each data event from stream will be send as a single WebSocket frame. The data from stream must be either Strings, or List<int>s holding bytes.
addUtf8Text(List<int> bytes) → void: Sends a text message with the text represented by bytes. [...]
close([int code, String reason ]) → Future: Closes the WebSocket connection. Set the optional code and reason arguments to send close information to the remote peer. If they are omitted, the peer will see WebSocketStatus.NO_STATUS_RECEIVED code with no reason.
addError(Object error, [ StackTrace stackTrace ]) → void: Adds an error to the sink. [...]
inherited
any(bool test(T element)) → Future<bool>: Checks whether test accepts any element provided by this stream. [...]
inherited
asBroadcastStream({void onListen(StreamSubscription<T> subscription), void onCancel(StreamSubscription<T> subscription) }) → Stream: Returns a multi-subscription stream that produces the same events as this. [...]
inherited
asyncExpand<E>(Stream<E> convert(T event)) → Stream<E>: Transforms each element into a sequence of asynchronous events. [...]
inherited
asyncMap<E>(FutureOr<E> convert(T event)) → Stream<E>: Creates a new stream with each data event of this stream asynchronously mapped to a new event. [...]
inherited
cast<R>() → Stream<R>: Adapt this stream to be a Stream<R>. [...]
inherited
contains(Object needle) → Future<bool>: Returns whether needle occurs in the elements provided by this stream. [...]
inherited
distinct([bool equals(T previous, T next) ]) → Stream: Skips data events if they are equal to the previous data event. [...]
inherited
drain<E>([E futureValue ]) → Future<E>: Discards all data on the stream, but signals when it's done or an error occurred. [...]
inherited
elementAt(int index) → Future: Returns the value of the indexth data event of this stream. [...]
inherited
every(bool test(T element)) → Future<bool>: Checks whether test accepts all elements provided by this stream. [...]
inherited
expand<S>(Iterable<S> convert(T element)) → Stream<S>: Transforms each element of this stream into a sequence of elements. [...]
inherited
firstWhere(bool test(T element), { dynamic orElse() }) → Future: Finds the first element of this stream matching test. [...]
inherited
fold<S>(S initialValue, S combine(S previous, T element)) → Future<S>: Combines a sequence of values by repeatedly applying combine. [...]
inherited
forEach(void action(T element)) → Future: Executes action on each element of the stream. [...]
inherited
handleError(Function onError, { bool test(dynamic error) }) → Stream: Creates a wrapper Stream that intercepts some errors from this stream. [...]
inherited
join([String separator = "" ]) → Future<String>: Combines the string representation of elements into a single string. [...]
inherited
lastWhere(bool test(T element), { dynamic orElse() }) → Future: Finds the last element in this stream matching test. [...]
inherited
listen(void onData(T event), { Function onError, void onDone(), bool cancelOnError }) → StreamSubscription: Adds a subscription to this stream. [...]
inherited
map<S>(S convert(T event)) → Stream<S>: Transforms each element of this stream into a new stream event. [...]
inherited
noSuchMethod(Invocation invocation) → dynamic: Invoked when a non-existent method or property is accessed. [...]
inherited
pipe(StreamConsumer streamConsumer) → Future: Pipes the events of this stream into streamConsumer. [...]
inherited
reduce(dynamic combine(T previous, T element)) → Future: Combines a sequence of values by repeatedly applying combine. [...]
inherited
singleWhere(bool test(T element), { dynamic orElse() }) → Future: Finds the single element in this stream matching test. [...]
inherited
skip(int count) → Stream: Skips the first count data events from this stream. [...]
inherited
skipWhile(bool test(T element)) → Stream: Skip data events from this stream while they are matched by test. [...]
inherited
take(int count) → Stream: Provides at most the first count data events of this stream. [...]
inherited
takeWhile(bool test(T element)) → Stream: Forwards data events while test is successful. [...]
inherited
timeout(Duration timeLimit, { void onTimeout(EventSink<T> sink) }) → Stream: Creates a new stream with the same events as this stream. [...]
inherited
toList() → Future<List>: Collects all elements of this stream in a List. [...]
inherited
toSet() → Future<Set>: Collects the data of this stream in a Set. [...]
inherited
toString() → String: Returns a string representation of this object.
inherited
transform<S>(StreamTransformer<dynamic, S> streamTransformer) → Stream<S>: Applies a StreamTransformer to the current stream. [...]
inherited
where(bool test(T event)) → Stream: Creates a new stream from this stream that discards some elements. [...]
inherited

Operators

operator ==(dynamic other) → bool: The equality operator. [...]
inherited

Static Properties

userAgent ↔ String: Gets the user agent used for WebSocket connections.
read / write

Static Methods

connect(String url, { Iterable<String> protocols, Map<String, dynamic> headers, CompressionOptions compression: CompressionOptions.compressionDefault }) → Future<WebSocket>: Create a new WebSocket connection. The URL supplied in url must use the scheme ws or wss. [...]

Constants

CLOSED → const int: @Deprecated("Use closed instead")

closed
closed → const int: 3
CLOSING → const int: @Deprecated("Use closing instead")

closing
closing → const int: 2
CONNECTING → const int: @Deprecated("Use connecting instead")

connecting
connecting → const int: Possible states of the connection.
0
OPEN → const int: @Deprecated("Use open instead")

open
open → const int: 1