Visual Basic 6.0

Send HTTP POST using non-UTF8 such as Windows-1250

See more HTTP Examples

Demonstrates how to specify the character encoding (charset) to be used for the body of an HTTP POST. Visual Basic 6.0

Dim success As Long
success = 0

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

Dim http As New ChilkatHttp

Dim req As New ChilkatHttpRequest

' Load a JSON file containing strings with Polish chars.
Dim json As New ChilkatJsonObject
success = json.LoadFile("qa_data/json/has_polish_chars.json")
If (success = 0) Then
    Debug.Print json.LastErrorText
    Exit Sub
End If

' Add the request params expected by the server-side:
req.AddParam "tytul",json.StringOf("tytul")
req.AddParam "tresc",json.StringOf("tresc")

' Indicate we wish to explicitly send the charset attribute in the HTTP request header.
req.SendCharset = 1

' Send the POST
' You can send the POST to the URL below.  It will respond with the request body in quoted-printable format.
' Using quoted-printable, we can easily see the binary bytes for the accented chars.

req.HttpVerb = "POST"
req.ContentType = "application/x-www-form-urlencoded"

Dim resp As New ChilkatHttpResponse
success = http.HttpReq("https://www.chilkatsoft.com/echoPost.cshtml",req,resp)
If (success = 0) Then
    Debug.Print http.LastErrorText
    Exit Sub
End If

Debug.Print http.LastHeader
Debug.Print resp.BodyStr

' Sample output:

' --------------------------------------------------
' POST /echoPost.cshtml HTTP/1.1
' Host: www.chilkatsoft.com
' Content-Type: application/x-www-form-urlencoded; charset=utf-8
' Content-Length: 79
' 
' <pre>tytul=3DPrzyk%C5%82ad&amp;tresc=3DPrzyk%C5%82ad
' %82oszenie</pre>
' --------------------------------------------------

' We can see by the %C5%82 that utf-8 was sent, because %C5%82 is the 2-byte representation of a particular Polish char.

' -----------------------
' However.. we can change the charset used for the HTTP request by specifying the request object's charset.

req.SendCharset = 1
req.Charset = "windows-1250"
req.HttpVerb = "POST"
req.ContentType = "application/x-www-form-urlencoded"

success = http.HttpReq("https://www.chilkatsoft.com/echoPost.cshtml",req,resp)
If (success = 0) Then
    Debug.Print http.LastErrorText
    Exit Sub
End If

Debug.Print http.LastHeader
Debug.Print resp.BodyStr

' Sample output...
' You can see how the bytes used for the Polish chars are now 1-byte per char (i.e. using Windows-1250) 

' --------------------------------------------------
' POST /echoPost.cshtml HTTP/1.1
' Host: www.chilkatsoft.com
' Content-Type: application/x-www-form-urlencoded; charset=windows-1250
' Content-Length: 70
' 
' <pre>tytul=3DPrzyk%B3ad&amp;tresc=3DPrzyk%B3ad
' e</pre>
' --------------------------------------------------