ServerSentEvent Delphi DLL Reference Documentation
ServerSentEvent
Current Version: 10.1.0
Represents a server-sent event (SSE) received from an HTTP text/event-stream.
Create/Dispose
var myObject: HCkServerSentEvent; begin myObject := CkServerSentEvent_Create(); // ... CkServerSentEvent_Dispose(myObject); end;
Creates an instance of the HCkServerSentEvent object and returns a handle (i.e. a Pointer). The handle is passed in the 1st argument for the functions listed on this page.
Objects created by calling CkServerSentEvent_Create must be freed by calling this method. A memory leak occurs if a handle is not disposed by calling this function.
Properties
Data
function CkServerSentEvent__data(objHandle: HCkServerSentEvent): PWideChar; stdcall;
The data for the server-side event. (If the "data" field was empty, then this will be empty.)
See the notes about PWideChar memory ownership and validity.
topEventName
function CkServerSentEvent__eventName(objHandle: HCkServerSentEvent): PWideChar; stdcall;
The name of the server-side event. (If the "event" field was not present, then this will be empty.)
See the notes about PWideChar memory ownership and validity.
topLastEventId
function CkServerSentEvent__lastEventId(objHandle: HCkServerSentEvent): PWideChar; stdcall;
The content of the "id" field, if present.
See the notes about PWideChar memory ownership and validity.
topLastMethodSuccess
procedure CkServerSentEvent_putLastMethodSuccess(objHandle: HCkServerSentEvent; newPropVal: wordbool); stdcall;
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.
topRetry
The integer value of the "retry" field, if present. Otherwise 0.
topMethods
LoadEvent
eventText: PWideChar): wordbool; stdcall;
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.