Tcl

HTTP Methods - GET and DELETE

Demonstrate a method for sending HTTP requests that don't have a request body, such as for GET or DELETE requests. Tcl

load ./chilkat.dll

set success 0

# This example assumes the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

set http [new_CkHttp]

# Specifiy a session log file so we can see the exact request/response
CkHttp_put_SessionLogFilename $http "c:/aaworkarea/sessionLog.txt"

# Perhaps add a custom header or two..
CkHttp_SetRequestHeader $http "x-exz-date" "20201012T235046Z"
CkHttp_SetRequestHeader $http "x-exz-id" "1234"

# Send a GET request to https://www.example.com/someting?param1=123&param2=abc
set url "https://www.example.com/someting?param1=123&param2=abc"
set resp [new_CkHttpResponse]

set success [CkHttp_HttpNoBody $http "GET" $url $resp]
if {$success == 0} then {
    puts [CkHttp_lastErrorText $http]
    delete_CkHttp $http
    delete_CkHttpResponse $resp
    exit
}

# The GET request that is sent looks like this.
# The Accept and Accept-Encoding headers are automatically added by default.

# 	GET /someting?param1=123&param2=abc HTTP/1.1
# 	Host: www.example.com
# 	Accept: */*
# 	Accept-Encoding: gzip
# 	x-exz-date: 20201012T235046Z
# 	x-exz-id: 1234

# Get the response status
set statusCode [CkHttpResponse_get_StatusCode $resp]
puts "Response status: $statusCode"

# Get the response body
puts [CkHttpResponse_bodyStr $resp]

# -------------------------------------------------------------
# Let's say we want to send a DELETE request, and we only want to accept an application/json response,
# and we don't want gzipped responses...

# First remove the previously specified custom headers.
CkHttp_ClearHeaders $http

# Indicate we only accept application/json non-gzipped responses.
CkHttp_put_Accept $http "application/json"
CkHttp_put_AllowGzip $http 0

# Send a DELETE request to https://www.example.com/deleteSomething
set url "https://www.example.com/deleteSomething"
set success [CkHttp_HttpNoBody $http "DELETE" $url $resp]
if {$success == 0} then {
    puts [CkHttp_lastErrorText $http]
    delete_CkHttp $http
    delete_CkHttpResponse $resp
    exit
}

# The DELETE request that is sent looks like this.
# The empty Accept-Encoding header value means we only want non-compressed responses.

# 	DELETE /deleteSomething HTTP/1.1
# 	Host: www.example.com
# 	Accept: application/json
# 	Accept-Encoding: 

# Get the response status
set statusCode [CkHttpResponse_get_StatusCode $resp]
puts "Response status: $statusCode"

# Get the response body
puts [CkHttpResponse_bodyStr $resp]

delete_CkHttp $http
delete_CkHttpResponse $resp