Serving a file to a user to download

Asked Jul 13 '16 at 08:54

Active Jul 13 '16 at 09:01

Viewed 102 times

I am writing a program that scrapes assets from a site(images & text), which will require the user to input which URL they would like to gather assets from. I then collect them all and zip all of them into a single file. I would like to then serve this zipped file to the user however I feel like the time to gather and zip the file is causing me to lose my connection to the user(10-15 seconds). Is there any way I can keep the connection to the user alive if this is my issue?

//Jquery post:
$.post( "GatherContent", { structure: userSelection, url: userURL } );

//lots of golang code server side to find all assets and compile them

zippedFile := compressfiles(directory)

w.Header().Set("Content-Type", "applicaiton/zip")
w.Header().Set("Content-Disposition", "attachment; filename='"+zippedFile+"'")
fmt.Println(zippedFile, zipPath)
http.ServeFile(w, r, zippedFile)

edited Jul 13 '16 at 09:01

asked Jul 13 '16 at 08:54

anonrose

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What you did so far? Can you show some code? – Khamidulla Jul 13 '16 at 08:56
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as a side note: you have a spelling mistake in your content-type. – Danilo Jul 13 '16 at 09:55
15 seconds could be okay if your users use default connection timeouts (http://stackoverflow.com/questions/13582409/http-client-timeout-and-server-timeout); but as I see you use jQuery, so you could just make callback later when the work will be done on the server – hsrv Jul 13 '16 at 10:56
What is the return type from compressFiles? What is zipPath? – Charlie Tumahai Jul 13 '16 at 14:14
@XyMcXface zippedFile is the name of the zipped file, and zipPath is the path to the file. – anonrose Jul 13 '16 at 15:31
Have you tried just sending the headers first? – mrd0ll4r Jul 13 '16 at 16:53

Serving a file to a user to download

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