(DataFlex) HTTP GET with Non-USASCII Query Params

See more HTTP Examples

This example illustrates how query parameters in a URL are typically encoded and transmitted.

Note: This example requires Chilkat v11.0.0 or greater.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

Use ChilkatAx-win32.pkg

Procedure Test
    Handle hoSbCompanyName
    Boolean iSuccess
    Handle hoSbUrl
    Handle hoHttp
    Variant vSbResponse
    Handle hoSbResponse
    String sTemp1
    Integer iTemp1

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

    // First, let's load the string "Grünhöfer GmbH" from a file.  (This is a fictitious company name.)
    // The file uses the utf-8 charset encoding.
    Get Create (RefClass(cComChilkatStringBuilder)) To hoSbCompanyName
    If (Not(IsComObjectCreated(hoSbCompanyName))) Begin
        Send CreateComObject of hoSbCompanyName
    End
    Get ComLoadFile Of hoSbCompanyName "qa_data/txt/companyName.txt" "utf-8" To iSuccess
    // Assuming success for this example...

    // We'll send an HTTP GET request to https://chilkatsoft.com/example?company_name={company name}

    // When sending an HTTP GET request with query parameters that contain accented characters 
    // (e.g., umlauts: ä, ö, ü), they must be percent-encoded (URL encoded) to ensure proper transmission and 
    // interpretation by the server.  This is based on their UTF-8 byte values.
    Get Create (RefClass(cComChilkatStringBuilder)) To hoSbUrl
    If (Not(IsComObjectCreated(hoSbUrl))) Begin
        Send CreateComObject of hoSbUrl
    End
    Get ComAppend Of hoSbUrl "https://chilkatsoft.com/example?company_name=" To iSuccess
    Get ComGetEncoded Of hoSbCompanyName "url" "utf-8" To sTemp1
    Get ComAppend Of hoSbUrl sTemp1 To iSuccess

    Get Create (RefClass(cComChilkatHttp)) To hoHttp
    If (Not(IsComObjectCreated(hoHttp))) Begin
        Send CreateComObject of hoHttp
    End

    // Send the following HTTP GET request:

    // GET /example?company_name=Gr%C3%BCnh%C3%B6fer%20GmbH HTTP/1.1
    // Host: chilkatsoft.com
    // Accept: */*
    // Accept-Encoding: gzip

    Get Create (RefClass(cComChilkatStringBuilder)) To hoSbResponse
    If (Not(IsComObjectCreated(hoSbResponse))) Begin
        Send CreateComObject of hoSbResponse
    End
    Get ComGetAsString Of hoSbUrl To sTemp1
    Get pvComObject of hoSbResponse to vSbResponse
    Get ComQuickGetSb Of hoHttp sTemp1 vSbResponse To iSuccess
    If (iSuccess = False) Begin
        Get ComLastErrorText Of hoHttp To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Get ComLastStatus Of hoHttp To iTemp1
    Showln "response status code: " iTemp1
    Get ComGetAsString Of hoSbResponse To sTemp1
    Showln sTemp1


End_Procedure