DataFlex

Connect to a REST Server

Demonstrates Rest.Connect, which establishes the initial TCP (and optionally TLS) connection to a REST server. The example connects over HTTPS and then reuses the connection for a request.

Background. A single connection can serve many requests to the same host. The TLS argument should be _TRUE_ for HTTPS (typically port 443), and automatic reconnection lets Chilkat transparently re-establish a dropped keep-alive connection.

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DataFlex

Use ChilkatAx-win32.pkg

Procedure Test
    Boolean iSuccess
    Handle hoRest
    Boolean iBTls
    Boolean iBAutoReconnect
    String sResponseText
    String sTemp1
    Boolean bTemp1

    Move False To iSuccess

    Get Create (RefClass(cComChilkatRest)) To hoRest
    If (Not(IsComObjectCreated(hoRest))) Begin
        Send CreateComObject of hoRest
    End

    //  Connect to the REST server.  The 3rd argument enables TLS (use True for HTTPS on port 443),
    //  and the 4th enables automatic reconnection if the connection is dropped between requests.
    Move True To iBTls
    Move True To iBAutoReconnect
    Get ComConnect Of hoRest "example.com" 443 iBTls iBAutoReconnect To iSuccess
    If (iSuccess = False) Begin
        Get ComLastErrorText Of hoRest To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    //  The connection is now established and ready for requests.  A single connection can be reused for
    //  many requests to the same server.
    Get ComFullRequestNoBody Of hoRest "GET" "/api/status" To sResponseText
    Get ComLastMethodSuccess Of hoRest To bTemp1
    If (bTemp1 = False) Begin
        Get ComLastErrorText Of hoRest To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Showln sResponseText


End_Procedure