(Go) MedTunnel: Get Message Attachment

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Get a specific attachment of a message. The MessageId and AttachmentId are obtained from the "Get Mailbox Messages" example.

For more information, see https://server.medtunnel.com/apidocs/html/M_MedTunnelMsg_Controllers_MessageController_GetAttachment.htm

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

    http := chilkat.NewHttp()
    var success bool

    // Implements the following CURL command:

    // curl -X GET -k 
    //         -H "Authorization:PutAuthorizationTokenHere" 
    //         https://server.medtunnel.com/medtunnelmsg/api/Message/GetAttachment?messageid=989448&attachmentid=424857&setreadflag=false

    // Use the following online tool to generate HTTP code from a CURL command
    // Convert a cURL Command to HTTP Source Code

    http.SetRequestHeader("Authorization","PutAuthorizationTokenHere")

    // The messageId and attachmentId are contained in the response from reading the mailbox messages.
    http.SetUrlVar("messageId","989448")
    http.SetUrlVar("attachmentId","424857")
    http.SetUrlVar("setReadFlag","false")

    // Download the attachment data into bd.
    bd := chilkat.NewBinData()
    success = http.QuickGetBd("https://server.medtunnel.com/MedTunnelMsg/api/Message/GetAttachment?messageid={$messageId}&attachmentid={$attachmentId}&setreadflag={$setReadFlag}",bd)
    if success == false {
        fmt.Println(http.LastErrorText())
        http.DisposeHttp()
        bd.DisposeBinData()
        return
    }

    respStatusCode := http.LastStatus()
    fmt.Println("Response Status Code = ", respStatusCode)
    if respStatusCode >= 400 {
        fmt.Println("Response Header:")
        fmt.Println(http.LastHeader())
        // For errors, the response body contains an error message instead of the actual attachment data.
        fmt.Println("Response Body:")
        fmt.Println(*bd.GetString("utf-8"))
        fmt.Println("Failed.")
        http.DisposeHttp()
        bd.DisposeBinData()
        return
    }

    // Save the attachment data.
    // The attachment filename is also contained in the response from reading the mailbox messages.
    success = bd.WriteFile("qa_output/starfish.jpg")
    if success != true {
        fmt.Println("Failed to save attachment file.")
    }
    else {
        fmt.Println("Success.")
    }


    http.DisposeHttp()
    bd.DisposeBinData()