Hi Pier, I said that I am not sure about getting binary data via HTTPService as I never heard or read about it. There is no direct answer in the documentation as well, I just think that HTTPService is too much oriented on the high-level stuff as XML encoding/decoding etc.
First thing - check that you use POST method. Then, try to use URLLoader - this one definitely works with binary data. Also I would recommend to install Wireshark sniffer - this is really great tool which helps you understand what is going on in your network. To use Wireshark you have to setup second machine acting as a server as it does not understand loopback interface. And don't use SSL for debugging as all your packets will be scrambled. Cheers, Dmitri. --- In [email protected], p_repetti <[EMAIL PROTECTED]> wrote: > > > Thanks for your note, Dmitri. > > I have thought about saving the jpg on the server then exposing it through > an URL, but that results in a potential security breach in my system. If I > generate the image on the fly and stream it to the client, I can control > that the client has right credentials to obtain it. Moreover, no trace is > left on the server. I strongly prefer this way. > > Could you please add some detail about why you're not sure I can retrieve > binary data through an HTTPService call ? > > My idea, as of now, is implementing it like I would in a Java client. I > mean: open an input stream from the servlet URL, then read data until it's > available, building the byte array chunk by chunk. By the way, that's how > the underlying FLex/AS code should do, in the backgrounds of the > HTTPService/send()/result callback implementation. At least I think so, > though I have no time to browse the Flex source code to find out. > > Do you have any more suggestions ? > > Pier > > > > Dmitri Girski wrote: > > > > Hmmm, I just re-read your post and realised that you are getting the > > binary data via the HTTPService. > > I am not sure if you can do this. > > > > If I were you I would save the generated image as .jpg file on server > > in some temp location and then return the path+name of it to the > > client. And then just set the source property of Image object. > > > > Cheers, > > Dmitri. > > > > > > > > --- In [email protected], p_repetti <pierangelo.repetti@> > > wrote: > >> > >> > >> Thanks to everyone who replied, but nothing changed. > >> > >> It looks like the problem is in the result byte array, that is > > _before_ the > >> loader actually gets in. > >> Is my way of creating the ByteArray correct ? > >> How can I inspect the length and contents of lastResult via the > > debugger ? > >> > >> Thanks > >> > >> > >> Dave Cragg wrote: > >> > > >> > Isn't using URLLoader a better way to download binary data such as > >> > jpeg files? It has a dataFormat property that can be set to binary, > >> > which delivers the data as a byteArray. > >> > > >> > My understanding of httpService is that it will try to parse the > >> > result depending on the setting of the resultFormat property. > > There is > >> > no binary option for this. > >> > > >> > I don't know if that's the cause of your problem, but it may be > > worth > >> > trying. > >> > > >> > Dave > >> > > >> > On 2 Apr 2008, at 18:04, p_repetti wrote: > >> > > >> >> > >> >> Hello > >> >> > >> >> I'm retrieving a JPEG from the server side to display it in an > >> >> mx:Image. The > >> >> image raw bytes are served by a plain Java Servlet. The content > > type > >> >> is > >> >> correct. If I call the servlet from a common browser it all works > >> >> fine. The > >> >> image is 400KB big. > >> >> > >> >> PROBLEM: when I call the servlet from Flex 3, it looks like the > >> >> lastResult > >> >> contains only the first bytes of the image, not all. > >> > > >> > > >> > >> -- > >> View this message in context: > > http://www.nabble.com/Partial-result-from-HTTPService-call-tp16447449p16467377.html > >> Sent from the FlexCoders mailing list archive at Nabble.com. > >> > > > > > > > > > > -- > View this message in context: http://www.nabble.com/Partial-result-from-HTTPService-call-tp16447449p16489127.html > Sent from the FlexCoders mailing list archive at Nabble.com. >
