Go 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. Go

    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}}}'

    sbCurl := chilkat.NewStringBuilder()
    sbCurl.AppendLn("curl -X POST https://api.example.com/data \\")
    sbCurl.AppendLn("  -H \"Content-Type: application/json\" \\")
    sbCurl.AppendLn("  -d '{\"name\":\"{{name}}\",\"age\":{{age}}}'")

    curl := chilkat.NewHttpCurl()

    //  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.
    sbRawRequest := chilkat.NewStringBuilder()
    success = curl.ToRawRequest(*sbCurl.GetAsString(),sbRawRequest)
    if success == false {
        fmt.Println(curl.LastErrorText())
        sbCurl.DisposeStringBuilder()
        curl.DisposeHttpCurl()
        sbRawRequest.DisposeStringBuilder()
        return
    }

    fmt.Println(*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 false

    curl.SetEnableBodyVars(false)

    success = curl.ToRawRequest(*sbCurl.GetAsString(),sbRawRequest)
    if success == false {
        fmt.Println(curl.LastErrorText())
        sbCurl.DisposeStringBuilder()
        curl.DisposeHttpCurl()
        sbRawRequest.DisposeStringBuilder()
        return
    }

    fmt.Println(*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}}}

    sbCurl.DisposeStringBuilder()
    curl.DisposeHttpCurl()
    sbRawRequest.DisposeStringBuilder()