(Tcl) Example: Http.CloseAllConnections method

See more HTTP Examples

Chilkat Tcl Extension Downloads Chilkat Tcl Extension Downloads

load ./chilkat.dll

set success 0

set http [new_CkHttp]

# Demonstrate 
set url "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"
CkHttp_SetUrlVar $http "symbol" "MSFT"
CkHttp_SetUrlVar $http "api_key" "1234567890ABCDEF"

set sbJson [new_CkStringBuilder]

set success [CkHttp_QuickGetSb $http $url $sbJson]
if {$success == 0} then {
    puts [CkHttp_lastErrorText $http]
    delete_CkHttp $http
    delete_CkStringBuilder $sbJson
    exit
}

set statusCode [CkHttp_get_LastStatus $http]
puts [CkHttp_lastResponseHeader $http]

# 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:
set success [CkHttp_CloseAllConnections $http]
if {$success == 0} then {
    puts [CkHttp_lastErrorText $http]
    delete_CkHttp $http
    delete_CkStringBuilder $sbJson
    exit
}

puts "Success."

delete_CkHttp $http
delete_CkStringBuilder $sbJson