Xojo Plugin Requires Chilkat v11.5.0+

curl with Variable Substitution in the Request Body

See more CURL Examples

This example demonstrates using variables located in the request body with the {{variable_name}} syntax. Xojo Plugin

Dim success As Boolean
success = False

//  Variables can also be used within the HTTP request body.
//  Variable names are enclosed between {{ and }}

//  Here is a curl command with two variables {{name}} and {{age}} located in the data.

//  curl -X POST https://api.example.com/data \
//    -H "Content-Type: application/json" \
//    -d '{"name":"{{name}}","age":{{age}}}'

Dim sbCurl As New Chilkat.StringBuilder
success = sbCurl.AppendLn("curl -X POST https://api.example.com/data \")
success = sbCurl.AppendLn("  -H ""Content-Type: application/json"" \")
success = sbCurl.AppendLn("  -d '{""name"":""{{name}}"",""age"":{{age}}}'")

Dim curl As New Chilkat.HttpCurl

//  Provide values for variables.
curl.SetVar "name","Alice"
curl.SetVar "age","30"

//  To demonstrate how the variables are replaced, this example does not execute the curl command. 
//  Instead, it generates the raw HTTP request that would be sent if the curl command were run.
Dim sbRawRequest As New Chilkat.StringBuilder
success = curl.ToRawRequest(sbCurl.GetAsString(),sbRawRequest)
If (success = False) Then
    System.DebugLog(curl.LastErrorText)
    Return
End If

System.DebugLog(sbRawRequest.GetAsString())

//  Output:

//  POST /data HTTP/1.1
//  Host: api.example.com
//  Content-Type: application/json
//  Content-Length: 25
//  
//  {"name":"Alice","age":30}

//  --------------------------------------------------------------------------------------------------
//  Note: Variable substitution in the request body can be turned off by 
//  setting the EnableBodyVars property equal to 0

curl.EnableBodyVars = False

success = curl.ToRawRequest(sbCurl.GetAsString(),sbRawRequest)
If (success = False) Then
    System.DebugLog(curl.LastErrorText)
    Return
End If

System.DebugLog(sbRawRequest.GetAsString())

//  The raw request with body variable substitution disable:

//  Host: api.example.com
//  Content-Type: application/json
//  Content-Length: 33
//  
//  {"name":"{{name}}","age":{{age}}}