ServerSentEvent Unicode C Reference Documentation


Current Version:

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


HCkServerSentEventW instance = CkServerSentEventW_Create();
// ...
HCkServerSentEventW CkServerSentEventW_Create(void);

Creates an instance of the HCkServerSentEventW object and returns a handle ("void *" pointer). The handle is passed in the 1st argument for the functions listed on this page.

void CkServerSentEventW_Dispose(HCkServerSentEventW handle);

Objects created by calling CkServerSentEventW_Create must be freed by calling this method. A memory leak occurs if a handle is not disposed by calling this function. Also, any handle returned by a Chilkat "C" function must also be freed by the application by calling the appropriate Dispose method, such as CkServerSentEventW_Dispose.


void CkServerSentEventW_getData(HCkServerSentEventW cHandle, HCkString retval);
const wchar_t *CkServerSentEventW_data(HCkServerSentEventW cHandle);
Introduced in version

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

void CkServerSentEventW_getEventName(HCkServerSentEventW cHandle, HCkString retval);
const wchar_t *CkServerSentEventW_eventName(HCkServerSentEventW cHandle);
Introduced in version

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

void CkServerSentEventW_getLastEventId(HCkServerSentEventW cHandle, HCkString retval);
const wchar_t *CkServerSentEventW_lastEventId(HCkServerSentEventW cHandle);
Introduced in version

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

BOOL CkServerSentEventW_getLastMethodSuccess(HCkServerSentEventW cHandle);
void CkServerSentEventW_putLastMethodSuccess(HCkServerSentEventW cHandle, BOOL newVal);

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.

int CkServerSentEventW_getRetry(HCkServerSentEventW cHandle);
Introduced in version

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



BOOL CkServerSentEventW_LoadEvent(HCkServerSentEventW cHandle, const wchar_t *eventText);
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.