Tcl

Example: Http.HttpJson method - Send a POST with JSON Body

See more HTTP Examples

Demonstrates how to call the HttpJson method, which sends an HTTP POST with a JSON body. This example sends the following request:

POST /echo_request_body.asp HTTP/1.1
Host: chilkatsoft.com
Accept: */*
Accept-Encoding: gzip
Content-Type: application/json
Content-Length: 26

{"greeting":"Hello World"}

Also see: Chilkat Http Default and Auto-Filled Headers

Tcl

load ./chilkat.dll

set success 0

set http [new_CkHttp]

set success 0

set json [new_CkJsonObject]

# Build the following JSON:  {"greeting":"Hello World"}
CkJsonObject_UpdateString $json "greeting" "Hello World"

# This URL echoes the contents of the request body, letting us view it.
set url "https://chilkatsoft.com/echo_request_body.asp"

# Send a POST with the JSON in the HTTP request body.
set resp [new_CkHttpResponse]

set success [CkHttp_HttpJson $http "POST" $url $json "application/json" $resp]
if {$success == 0} then {
    puts [CkHttp_lastErrorText $http]
    delete_CkHttp $http
    delete_CkJsonObject $json
    delete_CkHttpResponse $resp
    exit
}

puts "Response Status Code: [CkHttpResponse_get_StatusCode $resp]"

# Examine the request we sent.
# The LastHeader property stores the HTTP request header of the most recent request sent,
# and in this instance, the response body mirrors the request body.
puts [CkHttp_lastHeader $http]
puts [CkHttpResponse_bodyStr $resp]

# Output:

# POST /echo_request_body.asp HTTP/1.1
# Host: chilkatsoft.com
# Accept: */*
# Accept-Encoding: gzip
# Content-Type: application/json
# Content-Length: 26
# 
# {"greeting":"Hello World"}

delete_CkHttp $http
delete_CkJsonObject $json
delete_CkHttpResponse $resp