CODEWITHSUNDEEP
pythonsocketstcppython-3.x
Luffy
Luffy

Reputation: 677

Sending text and binary using sockets in python

Hi i want send via socket xml like this.

<root>
  <image ID='2'>
    <![CDATA[ binary data with image ]]>
  </image>
</root>

I have problem because image is binary data and other part is string. I am sending multiple images and i need to have ID.

The main problem is what to do with binary data and string data. I tried to convert image to str but i cant revert this.

Upvotes: 1

Views: 1115

Answers (2)

Steve Barnes
Steve Barnes

Reputation: 28405

Just connect the socket as binary - it is anyway and you probably don't care about newline conversion anyway.

Upvotes: 0

Paulo Bu
Paulo Bu

Reputation: 29804

A useful way to embed binary in xml is base64-encoding it. This is the approach XAML uses to send small images for example. You may do like this somewhere in your code:

import base64
img = open('some.png',rb').read()
base64.b64encode(img)

# append it to your buffer

And on the other side:

#get the img portion in the buffer
import base64
img = base64.b64decode(fetched_img)
# write it to disk or whatever

This is the standard/usual way to treat binary files inside XML.

Using base64 is very simple, this is a example in the interpreter:

In [1]: import base64
In [4]: base64.b64encode('example')
Out[4]: 'ZXhhbXBsZQ=='
In [5]: base64.b64decode('ZXhhbXBsZQ==')
Out[5]: 'example'

You can read the docs here.

Hope this helps!

Upvotes: 2

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