Sending binary data over http in the url

Question

I am trying for a way to pass binary data to a server over http, via the URL field in the browser. Is there a way to bypass the automatic http encoding done by the browser so I can just encode the data by myself.

e.g.: Instead of the byte with value 48, to fill in the URL %30 so that the browser doesn't re-encode the url and I end up with %2530

Solved: To whom may encounter similar problems in the future. You can do so by using wget parameter

--restrict-file-name=ascii

Which basically ensures that '%' won't be escaped

Because on the server side there is a binary that expects this sort of data, and I was wondering whether there was a way to do this without writing a http client from scratch. — skyel
– skyel, Commented May 26, 2012 at 12:08
If you just put a 0 in, that's equivalent to putting %30. There shouldn't be any issues doing so. — Asherah
– Asherah, Commented May 26, 2012 at 12:11
As e.g. suggests, that was a mere example. There are ways to do so for the first 127 ASCII characters (the readable ones) but the problem is with the ones in range (127-255] — skyel
– skyel, Commented May 26, 2012 at 12:15

Julien Lebot · Accepted Answer · 2012-05-26 12:45:30Z

2

Use base64 encoding, that's what it's designed to do.

answered May 26, 2012 at 12:45

Julien Lebot

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2 Comments

Overv Over a year ago

He can't modify the server side, so no option. Skyel, you should put that in the question.

zwcloud Over a year ago

This may cause issues becaue the base64 encoded string can contain '/'. I think base32 encoding is more appropriate.

skyel · Accepted Answer · 2012-06-04 00:17:49Z

0

I managed to do so, by writing my own tcp client to connect to the http server and transmit the request, by inputting it manually.

answered Jun 4, 2012 at 0:17

skyel

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Comments

Community · Accepted Answer · 2017-05-23 10:33:50Z

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Use the base62 encoding.

The encoded string doesn't contain any character that will be URL-encoded.

edited May 23, 2017 at 10:33

CommunityBot

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answered Aug 19, 2016 at 19:53

zwcloud

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