The first version of Port80 stuffed an image file with packet data.

October 19th, 2005

The initial version of Port80 pushed packet information into a Targa TGA file.

It grabbed a specified number of bytes linearly from a specified position in each packet.

(for example, read 10 bytes out of every packet starting at pos = 1/3 of its byte length).

It then repeatedly read bytes until it had filled the image file of size w x h (in pixels).

Each byte was scaled by its unsigned value (0-255) to set the color of each pixel:

• R: (0-85)
• B: (86-170)
• G: (171-255)

Here are images as well as corresponding text files containing the origin of every packet and the specific byte data read.

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This is my wifi searching for a router, sending identical sounding packets over and over. You can see the repetition as a series of green horizontal lines.

1400×1050: 100 bytes/packet starting packet_length/5

file.PNG < –> file.txt source (4.27Mb)

Surfing online.

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100×100: 100 bytes/packet starting packet_length/20

file2.PNG < –> file2.txt source (36.6Kb)

Surfing online.

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100×100: 15 bytes/packet starting packet_length/25

file3.PNG < –> file3.txt source (177Kb)

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I decided to pursue a more visually active dissemination of the information … aka I thought the pictures were boring and took a different approach with Port80.