The web socket client is a implemented as a class which is
created from from a HTTP client connection. This way it is
independent from the HTTP client and is just using the HTTP
client.
The protocol handling is mainly re-using the code from the web
socket server.
Change the handling of setting an onNoPendingWrites handler on a
socket output stream. Now setting a new onNoPendingWrites handler
will trigger a callback when there is no pending data to be
written.
Add socket detaching to the HTTP client as well. Add the ability
to get any unparsed data read from the socket for processing
after the protocol upgrade.
R=ager@google.com, ajohnsen@google.com, vsm@google.com, jacobr@google.com
BUG=dart:2001
TEST=tests/standalone/io/web_socket_test.dart
Review URL: https://chromiumcodereview.appspot.com//10262031
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@7224 260f80e4-7a28-3924-810f-c04153c831b5
This implements the web socket protocol as a request handler for
the HTTP server. The HTTP server have been updated with the
ability of getting the socket when a HTTP upgrade request is
processed. This way the web socket implementation is not builtin
to the HTTP server.
The API on the server is:
interface WebSocketConnection {
void set onMessage(void callback(Object message));
void set onClosed(void callback(int status, String reason));
void set onError(void callback(e));
send(Object message);
close([int status, String reason]);
}
This API currently does not have any streaming but collects the
entire message before invoking the onMessage callback. The
current browser web socket API
(http://dev.w3.org/html5/websockets/) works the same way. The
underlying web socket protocol can have unbounded messages so
long term this probably have to change. But for now the only
likely client for a web socket server is a browser.
Currently this is missing tests. The implementation has been
tested by running the WebSocketTest.dart script and connecting
using a browser. This testing have been done using Chrome 19 and
Firefox 11.
I will be adding tests in separate change lists.
The SHA-1 and base 64 code (initially written by
ajohnsen@google.com) can be removed when these algorithms is
available in the dart:crypto.
R=ager@google.com, ajohnsen@google.com, vsm@google.com, jacobr@google.com
BUG=dart:2001
TEST=none
Review URL: https://chromiumcodereview.appspot.com//10205012
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@6998 260f80e4-7a28-3924-810f-c04153c831b5
nweiz@google.com