func uploader(ctx *web.Context, key string) {
updateRemoteAddr(ctx)
if _, ok := uploadRequests[key]; ok {
// key exists
ctx.Forbidden()
return
}
wait := make(chan string)
defer delete(uploadRequests, key)
uploadRequests[key] = uploadRequest{ctx.Request, wait}
var result string
select {
case result = <-wait:
case <-time.After(WAIT_CLIENT_TIMEOUT):
result = "wait client timeout"
}
if result == "connected" {
// wait actual result
result = <-wait
}
var body string
if xrw := ctx.Request.Header.Get("X-Requested-With"); xrw == "XMLHttpRequest" {
body = "{\"result\": \"" + result + "\"}\n"
ctx.SetHeader("Content-Type", "application/json", true)
} else {
tmpl, err := template.New("uploader").Parse(uploadTemplate)
if err != nil {
panic(err)
}
var buf bytes.Buffer
tmpl.Execute(&buf, UploadTemplateValue{result})
body = buf.String()
}
if result == "ok" {
ctx.WriteString(body)
} else {
ctx.Abort(500, body)
ctx.Request.Body.Close()
}
}