VB.NET

Example: Http.CloseAllConnections method

See more HTTP Examples

Demonstrates how to call the CloseAllConnections method. VB.NET

Dim success As Boolean = False

Dim http As New Chilkat.Http

' Demonstrate 
Dim url As String = "https://finnhub.io/api/v1/quote?symbol={$symbol}&token={$api_key}"

' When the request is sent, the {$symbol} is replaced with "MSFT"
' and the {$api_key} is replaced with "1234567890ABCDEF"
http.SetUrlVar("symbol","MSFT")
http.SetUrlVar("api_key","1234567890ABCDEF")

Dim sbJson As New Chilkat.StringBuilder
success = http.QuickGetSb(url,sbJson)
If (success = False) Then
    Debug.WriteLine(http.LastErrorText)
    Exit Sub
End If


Dim statusCode As Integer = http.LastStatus
Debug.WriteLine(http.LastResponseHeader)

' The response header contains this:

' Date: Tue, 19 Aug 2025 12:18:56 GMT
' Content-Type: application/json; charset=utf-8
' Transfer-Encoding: chunked
' Connection: keep-alive
' Content-Encoding: gzip

' The "Connection: keep-alive" header ensures the server keeps the connection open for subsequent requests.
' If the server responds with a "Connection: close" header, it indicates the connection will be closed after the response. 
' Consequently, Chilkat will also close the connection, requiring a new one to be established for any subsequent requests to the same server.

' If your application uses the same HTTP object instance to send requests to a different server, a new connection will be established with that server.
' Existing connections remain open, with Chilkat maintaining up to 10 open connections. 
' If all 10 connections are in use, Chilkat will close the least recently used connection to connect to a new server.

' Your application can explicitly close all open connections like this:
success = http.CloseAllConnections()
If (success = False) Then
    Debug.WriteLine(http.LastErrorText)
    Exit Sub
End If


Debug.WriteLine("Success.")