Hello, I'm facing a very similar problem but I still cannot solve it by
your solution. Would you mind help me ? Thank you very much
On Friday, 24 June 2016 23:57:27 UTC+9, David Marceau wrote:
>
> The core problem was:
> w.Header().Set("Content-Disposition","attachment;filename=" +
> strOutputFileOfJournalctl)
> Should actually be:
> w.Header().Add("Content-Disposition","attachment;filename=" +
> strOutputFileOfJournalctl)
>
> I preferred to put the above line before the serveFile.
>
> That's all. Thanks to everyone who dropped by.
>
> On Friday, June 24, 2016 at 9:44:00 AM UTC-4, David Marceau wrote:
>>
>> Here is what is in my import. Maybe I should be looking in goji instead
>> of net/http?
>>
>
>
>>
>> import (
>> "fmt"
>> "net"
>> "time"
>> "strconv"
>> "strings"
>> "os"
>> "encoding/json"
>> "net/http"
>> "crypto/tls"
>> "crypto/rand"
>> "github.com/gorilla/mux"
>> "github.com/goji/httpauth"
>> "github.com/zfjagann/golang-ring"
>> "github.com/kabukky/httpscerts"
>> "reflect"
>> "io"
>> "io/ioutil"
>> "path/filepath"
>> "html/template"
>> "os/exec"
>> )
>>
>> On Friday, June 24, 2016 at 9:40:29 AM UTC-4, David Marceau wrote:
>>>
>>> I tried to repeat the same ordering as the iris infrastructure within
>>> the function, but it still behaves not as expected. It does not show the
>>> file->save... dialog. It shows the file within the browser as a web page.
>>>
>>> func blah (w http.ResponseWriter, r *http.Request) {
>>> strOutputFileOfJournalctl = "journalctlLog.json"
>>> w.Header().Set("Content-Type","application/octet-stream") //forces
>>> the save as dialog
>>>
>>> strSomeStringInJsonFormat := "{ Blah: 'blah value' }"
>>> myOutput := []byte(strSomeStringInJsonFormat)
>>>
>>> //ATTEMPT #1
>>> //w.Write(myOutput) //displays in web browser page
>>> //ATTEMPT #4
>>> //w.Header().Set("Content-Disposition","attachment;filename=" +
>>> strOutputFileOfJournalctl)
>>>
>>>
>>>
>>> //ATTEMPT #3
>>> //w.Header().Add("Content-Length", strconv.Itoa( len(myOutput) ) )
>>> //w.Write(myOutput) //displays in web browser page
>>> //w.Header().Set("Content-Disposition","attachment;filename=" +
>>> strOutputFileOfJournalctl)
>>>
>>>
>>>
>>> //ATTEMPT #2
>>> w.Header().Add("Content-Length", strconv.Itoa(len(myOutput)) )
>>> tmpFile, _ := ioutil.TempFile(os.TempDir(), "OurGeneratedCustomLog")
>>> defer os.Remove(tmpFile.Name())
>>> tmpFile.Write(myOutput)
>>> tmpFile.Close()
>>> http.ServeFile(w, r, tmpFile.Name())
>>> //ATTEMPT #5
>>> w.Header().Set("Content-Disposition","attachment;filename=" + "\"" +
>>> strOutputFileOfJournalctl + "\"")
>>> }
>>>
>>>
>>> On Friday, June 24, 2016 at 7:06:59 AM UTC-4, David Marceau wrote:
>>>>
>>>> Again, I want to clarify the file does arrive in the browser, but I
>>>> want to ensure the "file->save..." dialog appears in the web browser when
>>>> it arrives. I found some older code I wrote a couple of years ago that
>>>> was
>>>> behaving as expected:
>>>> w.Header().Set("Content-Type", "application/octet-stream")
>>>> w.Header().Set("Content-Disposition", "attachment; filename=" +
>>>> myBasePdf + ".pdf")
>>>> http.ServeFile(w, req, myGenPdfFileName)
>>>>
>>>>
>>>> I acknowledge when I wrote this email I made a typo, but in my code I
>>>> do have the Itoa correctly.
>>>> w.Header().Set("Content-Length", strconv.Itoa( len(myCmdOutput) ) )
>>>> I never used that content-length field because I read somewhere that I
>>>> shouldn't.
>>>>
>>>> Last night I took a look at iris to see how they do it and found:
>>>> https://github.com/kataras/iris/blob/master/context.go#L583
>>>> err := ctx.ServeFile(filename, false)
>>>> if err != nil {
>>>> return err
>>>> }
>>>>
>>>> ctx.RequestCtx.Response.Header.Set(contentDisposition, "
>>>> attachment;filename="+destinationName)
>>>>
>>>> I am scratching my head since the header set content-disposition is
>>>> happening after the ServeFile which is different from what all the docs
>>>> and
>>>> what I am used to seeing. It seems calling these functions are
>>>> order-independant. When does the connection actually send the file over
>>>> the connection?
>>>>
>>>> I believe the Iris send file also provides what I want as expected
>>>> behaviour, but I haven't tried it yet.
>>>>
>>>> On Thursday, June 23, 2016 at 6:15:16 PM UTC-4, Val wrote:
>>>>>
>>>>> The commented line seems to have typo strconv.Ito
>>>>>
>>>>> Maybe the typo prevents proper recompilation, and server goes on with
>>>>> old code?
>>>>>
>>>>
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