(Go) URL Encoding Charset in POST Query Params

Demonstrates how to control the URL encoding charset in POST query params.

Chilkat Go Downloads Go Package for Windows, MacOS, Linux, Alpine Linux, Solaris

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

    // We have the string "MÆRSK".
    nameWin1252Encoded := "M%E6RSK"

    // Note: The DecodeAndAppend method is newly added in Chilkat v9.5.0.87
    sb := chilkat.NewStringBuilder()
    success := sb.DecodeAndAppend(nameWin1252Encoded,"url","windows-1252")

    http := chilkat.NewHttp()

    // We're setting the session log filename so we can see the exact request sent.
    http.SetSessionLogFilename("qa_output/sessionLog.txt")

    // First demonstrate a simple application/x-www-form-urlencoded POST

    req := chilkat.NewHttpRequest()

    // Set the Charset = "utf-8" to cause URL encoding to use utf-8.
    req.SetCharset("utf-8")

    req.AddParam("name",*sb.GetAsString())

    resp := http.PostUrlEncoded("https://www.chilkatsoft.com/something",req)
    if http.LastMethodSuccess() == false {
        fmt.Println(http.LastErrorText())
        sb.DisposeStringBuilder()
        http.DisposeHttp()
        req.DisposeHttpRequest()
        return
    }

    // This is the request that is sent:
    // Notice that utf-8 is used in the query param (the letter 'Æ' is %C3%A6)

    // 	POST /something HTTP/1.1
    // 	Host: www.chilkatsoft.com
    // 	Content-Type: application/x-www-form-urlencoded
    // 	Content-Length: 15
    // 
    // 	name=M%C3%A6RSK

    resp.DisposeHttpResponse()

    // ---------------------------------------------------------------
    // Switch to windows-1252

    req.SetCharset("windows-1252")

    resp = http.PostUrlEncoded("https://www.chilkatsoft.com/something",req)
    if http.LastMethodSuccess() == false {
        fmt.Println(http.LastErrorText())
        sb.DisposeStringBuilder()
        http.DisposeHttp()
        req.DisposeHttpRequest()
        return
    }

    // This is the request that is sent:
    // Notice that windows-1252 is used in the query param (the letter 'Æ' is %E6)

    // 	POST /something HTTP/1.1
    // 	Host: www.chilkatsoft.com
    // 	Content-Type: application/x-www-form-urlencoded
    // 	Content-Length: 12
    // 
    // 	name=M%E6RSK

    resp.DisposeHttpResponse()

    // ---------------------------------------------------------------
    // Let's do the same with SynchronousRequest, switching back to utf-8

    req.SetPath("/something")
    req.SetHttpVerb("POST")
    req.SetContentType("application/x-www-form-urlencoded")

    req.SetCharset("utf-8")

    resp = http.SynchronousRequest("www.chilkatsoft.com",443,true,req)
    if http.LastMethodSuccess() == false {
        fmt.Println(http.LastErrorText())
        sb.DisposeStringBuilder()
        http.DisposeHttp()
        req.DisposeHttpRequest()
        return
    }

    // This is the request that is sent:
    // Notice that utf-8 is used in the query param (the letter 'Æ' is %C3%A6)

    // 	POST /something HTTP/1.1
    // 	Host: www.chilkatsoft.com
    // 	Content-Type: application/x-www-form-urlencoded
    // 	Content-Length: 15
    // 
    // 	name=M%C3%A6RSK

    resp.DisposeHttpResponse()

    // ---------------------------------------------------------------
    // Let's do a PostXml where the query params are in the HTTP request start line, 
    // and the Content-Type is text/xml where the body of the request is XML.

    req.SetPath("/something")
    req.SetHttpVerb("POST")
    req.SetContentType("text/xml")
    success = req.LoadBodyFromString("<test>123</test>","utf-8")
    req.SetCharset("utf-8")

    // Remember... our request object still contains the query param added in the above call to AddParam.

    resp = http.SynchronousRequest("www.chilkatsoft.com",443,true,req)
    if http.LastMethodSuccess() == false {
        fmt.Println(http.LastErrorText())
        sb.DisposeStringBuilder()
        http.DisposeHttp()
        req.DisposeHttpRequest()
        return
    }

    // This is the request that is sent:
    // Notice that utf-8 is used in the query param (the letter 'Æ' is %C3%A6)

    // 	POST /something?name=M%C3%A6RSK HTTP/1.1
    // 	Host: www.chilkatsoft.com
    // 	Content-Type: text/xml
    // 	Content-Length: 16
    // 
    // 	<test>123</test>

    resp.DisposeHttpResponse()

    sb.DisposeStringBuilder()
    http.DisposeHttp()
    req.DisposeHttpRequest()