ServerSentEvent VB.NET Reference Documentation

ServerSentEvent

Current Version: 11.0.0

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

Object Creation

Dim obj As New Chilkat.ServerSentEvent()

Properties

Data
Data As String (ReadOnly)
Introduced in version 9.5.0.58

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

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DebugLogFilePath
DebugLogFilePath As String

If set to a file path, this property logs the LastErrorText of each Chilkat method or property call to the specified file. This logging helps identify the context and history of Chilkat calls leading up to any crash or hang, aiding in debugging.

Enabling the VerboseLogging property provides more detailed information. This property is mainly used for debugging rare instances where a Chilkat method call causes a hang or crash, which should generally not happen.

Possible causes of hangs include:

  • A timeout property set to 0, indicating an infinite timeout.
  • A hang occurring within an event callback in the application code.
  • An internal bug in the Chilkat code causing the hang.

More Information and Examples
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EventName
EventName As String (ReadOnly)
Introduced in version 9.5.0.58

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

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LastErrorHtml
LastErrorHtml As String (ReadOnly)

Provides HTML-formatted information about the last called method or property. If a method call fails or behaves unexpectedly, check this property for details. Note that information is available regardless of the method call's success.

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LastErrorText
LastErrorText As String (ReadOnly)

Provides plain text information about the last called method or property. If a method call fails or behaves unexpectedly, check this property for details. Note that information is available regardless of the method call's success.

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LastErrorXml
LastErrorXml As String (ReadOnly)

Provides XML-formatted information about the last called method or property. If a method call fails or behaves unexpectedly, check this property for details. Note that information is available regardless of the method call's success.

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LastEventId
LastEventId As String (ReadOnly)
Introduced in version 9.5.0.58

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

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LastMethodSuccess
LastMethodSuccess As Boolean

Indicates the success or failure of the most recent method call: True means success, False means failure. This property remains unchanged by property setters or getters. This method is present to address challenges in checking for null or Nothing returns in certain programming languages.

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Retry
Retry As Integer (ReadOnly)
Introduced in version 9.5.0.58

The integer value of the "retry" field, if it exists; otherwise, 0.

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VerboseLogging
VerboseLogging As Boolean

If set to True, then the contents of LastErrorText (or LastErrorXml, or LastErrorHtml) may contain more verbose information. The default value is False. Verbose logging should only be used for debugging. The potentially large quantity of logged information may adversely affect peformance.

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Version
Version As String (ReadOnly)

Version of the component/library, such as "10.1.0"

More Information and Examples
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Methods

LoadEvent
Function LoadEvent(ByVal eventText As String) As Boolean
Introduced in version 9.5.0.58

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.

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