# SecureSocket class

A high-level class for communicating securely over a TCP socket, using TLS and SSL. The SecureSocket exposes both a Stream and an IOSink interface, making it ideal for using together with other Streams.

Implements
  - Socket

## Properties

peerCertificate → X509Certificate
  Get the peer certificate for a connected SecureSocket. If this SecureSocket is the server end of a secure socket connection, peerCertificate will return the client certificate, or null, if no client certificate was received. If it is the client end, peerCertificate will return the server's certificate.
  read-only
selectedProtocol → String
  The protocol which was selected during ALPN protocol negotiation. [...]
  read-only
address → InternetAddress
  Returns the InternetAddress used to connect this socket.
  read-only, inherited
done → Future
  Get a future that will complete when the consumer closes, or when an error occurs. This future is identical to the future returned by close.
  read-only, inherited
encoding ↔ Encoding
  The `Encoding` used when writing strings. Depending on the underlying consumer this property might be mutable.
  read / write, inherited
first → Future<List<int>>
  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<List<int>>
  The last element of this stream. [...]
  read-only, inherited
length → Future<int>
  The number of elements in this stream. [...]
  read-only, inherited
port → int
  Returns the port used by this socket.
  read-only, inherited
remoteAddress → InternetAddress
  Returns the remote InternetAddress connected to by this socket.
  read-only, inherited
remotePort → int
  Returns the remote port connected to by this socket.
  read-only, inherited
runtimeType → Type
  A representation of the runtime type of the object.
  read-only, inherited
single → Future<List<int>>
  The single element of this stream. [...]
  read-only, inherited

## Methods

renegotiate({bool useSessionCache: true, bool requestClientCertificate: false, bool requireClientCertificate: false }) → void
  Renegotiate an existing secure connection, renewing the session keys and possibly changing the connection properties. [...]
add(List<int> data) → void
  Adds byte `data` to the target consumer, ignoring encoding. [...]
  inherited
addError(Object error, [ StackTrace stackTrace ]) → void
  Passes the error to the target consumer as an error event. [...]
  inherited
addStream(Stream<List<int>> stream) → Future
  Adds all elements of the given `stream` to `this`. [...]
  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<List<int>>
  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
close() → Future
  Close the target consumer. [...]
  inherited
contains(Object needle) → Future<bool>
  Returns whether `needle` occurs in the elements provided by this stream. [...]
  inherited
destroy() → void
  Destroy the socket in both directions. Calling destroy will make the send a close event on the stream and will no longer react on data being piped to it. [...]
  inherited
distinct([bool equals(T previous, T next) ]) → Stream<List<int>>
  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<List<int>>
  Returns the value of the `index`th 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), { List<int> orElse() }) → Future<List<int>>
  Finds the first element of this stream matching `test`. [...]
  inherited
flush() → Future
  Returns a Future that completes once all buffered data is accepted by the underlying StreamConsumer. [...]
  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<List<int>>
  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), { List<int> orElse() }) → Future<List<int>>
  Finds the last element in this stream matching `test`. [...]
  inherited
listen(void onData(T event), { Function onError, void onDone(), bool cancelOnError }) → StreamSubscription<List<int>>
  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<List<int>> streamConsumer) → Future
  Pipes the events of this stream into `streamConsumer`. [...]
  inherited
reduce(List<int> combine(T previous, T element)) → Future<List<int>>
  Combines a sequence of values by repeatedly applying `combine`. [...]
  inherited
setOption(SocketOption option, bool enabled) → bool
  Use setOption to customize the RawSocket. See SocketOption for available options. [...]
  inherited
singleWhere(bool test(T element), { List<int> orElse() }) → Future<List<int>>
  Finds the single element in this stream matching `test`. [...]
  inherited
skip(int count) → Stream<List<int>>
  Skips the first `count` data events from this stream. [...]
  inherited
skipWhile(bool test(T element)) → Stream<List<int>>
  Skip data events from this stream while they are matched by `test`. [...]
  inherited
take(int count) → Stream<List<int>>
  Provides at most the first `count` data events of this stream. [...]
  inherited
takeWhile(bool test(T element)) → Stream<List<int>>
  Forwards data events while `test` is successful. [...]
  inherited
timeout(Duration timeLimit, { void onTimeout(EventSink<T> sink) }) → Stream<List<int>>
  Creates a new stream with the same events as this stream. [...]
  inherited
toList() → Future<List<List<int>>>
  Collects all elements of this stream in a List. [...]
  inherited
toSet() → Future<Set<List<int>>>
  Collects the data of this stream in a Set. [...]
  inherited
toString() → String
  Returns a string representation of this object.
  inherited
transform<S>(StreamTransformer<List<int>, S> streamTransformer) → Stream<S>
  Applies a StreamTransformer to the current stream. [...]
  inherited
where(bool test(T event)) → Stream<List<int>>
  Creates a new stream from this stream that discards some elements. [...]
  inherited
write(Object obj) → void
  Converts `obj` to a String by invoking Object.toString and adds the encoding of the result to the target consumer. [...]
  inherited
writeAll(Iterable objects, [ String separator = "" ]) → void
  Iterates over the given `objects` and writes them in sequence. [...]
  inherited
writeCharCode(int charCode) → void
  Writes the character of `charCode`. [...]
  inherited
writeln([Object obj = "" ]) → void
  Converts `obj` to a String by invoking Object.toString and writes the result to `this`, followed by a newline. [...]
  inherited

## Operators

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

## Static Methods

connect(dynamic host, int port, { SecurityContext context, bool onBadCertificate(X509Certificate certificate), List<String> supportedProtocols, Duration timeout }) → Future<SecureSocket>
  Constructs a new secure client socket and connects it to the given `host` on port `port`. The returned Future will complete with a SecureSocket that is connected and ready for subscription. [...]
secure(Socket socket, { dynamic host, SecurityContext context, bool onBadCertificate(X509Certificate certificate) }) → Future<SecureSocket>
  Takes an already connected `socket` and starts client side TLS handshake to make the communication secure. When the returned future completes the SecureSocket has completed the TLS handshake. Using this function requires that the other end of the connection is prepared for TLS handshake. [...]
secureServer(Socket socket, SecurityContext context, { List<int> bufferedData, bool requestClientCertificate: false, bool requireClientCertificate: false, List<String> supportedProtocols }) → Future<SecureSocket>
  Takes an already connected `socket` and starts server side TLS handshake to make the communication secure. When the returned future completes the SecureSocket has completed the TLS handshake. Using this function requires that the other end of the connection is going to start the TLS handshake. [...]
startConnect(dynamic host, int port, { SecurityContext context, bool onBadCertificate(X509Certificate certificate), List<String> supportedProtocols }) → Future<ConnectionTask<SecureSocket>>
  Like connect, but returns a Future that completes with a ConnectionTask that can be cancelled if the SecureSocket is no longer needed.