Do I need to change the encoding to stream an image to a browser?

[David Clarke]

When using PBCC:
This is not working:

FUNCTION PBMAIN () AS LONG

LOCAL bmp_string AS STRING
LOCAL bmp_len AS LONG

OPEN "x.bmp" FOR BINARY AS #1
GET$ #1, LOF(1), bmp_string
bmp_len = LOF(1)
CLOSE #1 


STDOUT "HTTP/1.1 200 OK"
STDOUT "Content-Type: image/bmp"
STDOUT "Last-Modified: Sun, 01 May 2022 23:23:24 GMT"
STDOUT "Accept-Ranges: bytes"
STDOUT "ETag: W/" + $DQ + "61a32f74b25dd81:0" + $DQ
STDOUT "Server: Microsoft-IIS/10.0"
STDOUT "Date: Sun, 01 May 2022 23:23:24 GMT"
STDOUT "Content-Length: 108954"
STDOUT
STDOUT bmp_string

END FUNCTION

[Dan Soper]

I think you need to base64 encode any binary data transferred by TCP/IP. Does your code work as-is for text files?

[Dale Yarker]

It is not the TCP layer that needs Base64. (unless your router is at least as old as you are)

[David Clarke]

Years ago I saw a product that would embed barcodes in a web page on the fly. It worked like this:

<img src='bcode.exe?12345'>

I have been meaning to figure out how that worked. So after trying everything complex and convoluted I tried this:

FUNCTION PBMAIN () AS LONG

LOCAL PNG_IMAGE_STRING AS STRING

 OPEN "test.png") FOR BINARY AS #1'
 GET$ #1, LOF(1), [/B][B]PNG_IMAGE_STRING 
 CLOSE #1


STDOUT
STDOUT PNG_IMAGE_STRING


END FUNCTION[/B]

This works! So, the next version would use ENVIRON$("QUERY_STRING") to know what image to construct. Next part of the project is to draw the image in PB. But for now I am using Nirsoft SimpleCodeGenerator.exe to make the qr code.

SHELL "SimpleCodeGenerator.exe /ErrorCorrection 2 /MinVersion 1 /MaxVersion 40 /Save otpauth://totp/Verolock?secret=" + GOOGLE_AUTH_CODE_STRING + " C:\IIS\Authenticator\" + GOOGLE_AUTH_CODE_STRING + ".png"

PNG_IMAGE_FILE_NAME = "C:\IIS\Authenticator\" + GOOGLE_AUTH_CODE_STRING + ".png"

Same basic idea can be used to make live dynamic charts etc....

[Rod Macia]

Next part of the project is to draw the image in PB.
.

The last time you asked about QRCode, got me wondering how hard it would be, to actually do that, well it took me 2 weeks of spare time to figure it out. It was an interesting challenge.
If you are interested, I can share what I have. Which can be made into a nice SLL.

It creates working QRCodes, that you can display, print or save in all the formats gdi+ can save.

[David Clarke]

Hi Rod! I would love to see what you came up with! you can email me if you like [email protected]
thanks!

[Rod Macia]

Here I'll share it with the community.

https://forum.powerbasic.com/forum/user-to-user-discussions/source-code/816346-qrcode-using-pb