web images - UGN Security Forum

hey hey. alright, SR has helped me out a bit...but there's one thing i couldn't quite get yet. first off, im making myself a simple webserver app that i can use my webcam with. basically, i want to be able to take snapshots from my webcam and display them online from my own computer. welll...i got the webserver part up, however, it can't display images. i tried searching around at pscode.com, google, and other things, but nothing that i could find that could help me. has anyone made one of these b4 and know what i mean? any help would be appreciated//

well, ok, you want to send the webcam image. Is that it? Cause you have 2 options, return a page with the image in it, or just return the image itself (easiest method).

Tell me which you wanna do and I'll tell ya how to do it.

ok, well, i'd like to return a page w/ the image, that way i can adjust how the page looks, where the image is placed, and plus, include either an applet or meta tag that refreshes the window, ala a sort of streaming video type thing.//

SilentRage way to go bro.. you're hell smart.

all the best

well here you go. First I'll tell ya why it's not working. All your program ever sends is the HTML. It's not sending the Image. So you need to learn how to detect when the browser is requesting that image. Here's one example of how the protocol would look:

Code

BROWSER CONNECTS TO SERVER
 
BEGIN BROWSER REQUEST
GET / HTTP/1.1
Host: 209.6.98.47
User-Agent: Internet Explorer
Connection: Keep-Alive
 
END BROWSER REQUEST
 
BEGIN SERVER RESPONSE
HTTP/1.1 200 Ok
Content-Type: text/html
Connection: Closed
 
<HTML><BODY>
  <IMG SRC="image">
</HTML></BODY>
END SERVER RESPONSE
 
SERVER DISCONNECTS
BROWSER CONNECTS TO SERVER
 
BEGIN BROWSER REQUEST
GET /image HTTP/1.1
Host: 209.6.98.47
User-Agent: Internet Explorer
Connection: Keep-Alive
 
END BROWSER REQUEST
 
BEGIN SERVER RESPONSE
HTTP/1.1 200 Ok
Content-Type: image/gif
Connection: Closed
 
[IMAGE]
END SERVER RESPONSE
 
SERVER DISCONNECTS

So now, here's a suggestion for the code in your DataArrival event:

Lines = Split(Data, vbcrlf)
Fields = Split(Lines(0), " ")

If Fields(1) = "/image" Then
'Send Header and image file
Else
'Send header and HTML page
End If