Module org.eclipse.jetty.ee8.servlets

Package org.eclipse.jetty.ee8.servlets

Interface EventSource.Emitter

All Known Implementing Classes:

EventSourceServlet.EventSourceEmitter

Enclosing interface:

EventSource

public static interface EventSource.Emitter

EventSource.Emitter is the active half of an event source connection, and allows applications to operate on the connection by sending events, data or comments, or by closing the connection.

An EventSource.Emitter instance will be created for each new event source connection.

EventSource.Emitter instances are fully thread safe and can be used from multiple threads.

Method Summary

Modifier and Type	Method	Description
void	close()	Closes this event source connection.
void	comment(String comment)	Sends a comment to the client.
void	data(String data)	Sends a default event with data to the client.
void	event(String name, String data)	Sends a named event with data to the client.

Method Details

event

void event(String name,
 String data)
    throws IOException

Sends a named event with data to the client.

When invoked as: event("foo", "bar"), the client will receive the lines:

 event: foo
 data: bar
 

Parameters:

name - the event name

data - the data to be sent

Throws:

IOException - if an I/O failure occurred

See Also:

• data(String)

data

void data(String data)
   throws IOException

Sends a default event with data to the client.

When invoked as: data("baz"), the client will receive the line:

 data: baz
 

When invoked as: data("foo\r\nbar\rbaz\nbax"), the client will receive the lines:

 data: foo
 data: bar
 data: baz
 data: bax
 

Parameters:

data - the data to be sent

Throws:

IOException - if an I/O failure occurred

comment

void comment(String comment)
      throws IOException

Sends a comment to the client.

When invoked as: comment("foo"), the client will receive the line:

 : foo
 

Parameters:

comment - the comment to send

Throws:

IOException - if an I/O failure occurred

close

void close()

Closes this event source connection.