ServerSentEvent DataFlex Reference Documentation


Current Version:

Represents a server-sent event (SSE) received from an HTTP text/event-stream.

Object Creation

// (Dataflex programs use the 32-bit Chilkat ActiveX)
Handle hoServerSentEvent
Get Create(RefClass(cComChilkatServerSentEvent)) to hoServerSentEvent


Function ComData Returns String
Introduced in version

The data for the server-side event. (If the "data" field was empty, then this will be empty.)

Function ComEventName Returns String
Introduced in version

The name of the server-side event. (If the "event" field was not present, then this will be empty.)

Function ComLastEventId Returns String
Introduced in version

The content of the "id" field, if present.

Function ComLastMethodSuccess Returns Boolean
Procedure Set ComLastMethodSuccess Boolean value

Indicate whether the last method call succeeded or failed. A value of True indicates success, a value of False indicates failure. This property is automatically set for method calls. It is not modified by property accesses. The property is automatically set to indicate success for the following types of method calls:

  • Any method that returns a string.
  • Any method returning a Chilkat object, binary bytes, or a date/time.
  • Any method returning a standard boolean status value where success = True and failure = False.
  • Any method returning an integer where failure is defined by a return value less than zero.

Note: Methods that do not fit the above requirements will always set this property equal to True. For example, a method that returns no value (such as a "void" in C++) will technically always succeed.

Function ComRetry Returns Integer
Introduced in version

The integer value of the "retry" field, if present. Otherwise 0.



Function ComLoadEvent String eventText Returns Boolean
Introduced in version

Loads the multi-line event text into this object. For example, the eventText for a Firebase event might look like this:

event: put
data: {"path": "/c", "data": {"foo": true, "bar": false}}

Returns True for success, False for failure.