55 lines
2.0 KiB
Python
Executable File
55 lines
2.0 KiB
Python
Executable File
#!/usr/bin/env python
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#
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# This script reads input headers from json file given in the
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# command-line (each file must be written in the format described in
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# https://github.com/Jxck/hpack-test-case but we require only
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# 'headers' data). Then it encodes input header set and write the
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# encoded header block in the same format. The output files are
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# created under 'out' directory in the current directory. It must
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# exist, otherwise the script will fail. The output filename is the
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# same as the input filename.
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#
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import sys, base64, json, os.path
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from binascii import b2a_hex
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import nghttp2
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def testsuite(testdata, filename):
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if testdata['context'] == 'request':
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side = nghttp2.HD_SIDE_REQUEST
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else:
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side = nghttp2.HD_SIDE_RESPONSE
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res = {
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'draft':5, 'context': testdata['context'],
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'description': '''\
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Encoded by nghttp2. The basic encoding strategy is described in \
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http://lists.w3.org/Archives/Public/ietf-http-wg/2013JulSep/1135.html \
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We use huffman encoding only if it produces strictly shorter byte string than \
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original. We make some headers not indexing at all, but this does not always \
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result in less bits on the wire.'''
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}
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cases = []
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deflater = nghttp2.HDDeflater(side)
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for casenum, item in enumerate(testdata['cases']):
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outitem = {
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'header_table_size': 4096,
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'headers': item['headers']
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}
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casenum += 1
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hdrs = [(list(x.keys())[0].encode('utf-8'),
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list(x.values())[0].encode('utf-8')) \
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for x in item['headers']]
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outitem['wire'] = b2a_hex(deflater.deflate(hdrs)).decode('utf-8')
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cases.append(outitem)
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res['cases'] = cases
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jsonstr = json.dumps(res, indent=2)
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with open(os.path.join('out', filename), 'w') as f:
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f.write(jsonstr)
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if __name__ == '__main__':
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for filename in sys.argv[1:]:
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sys.stderr.write('{}\n'.format(filename))
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with open(filename) as f:
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input = f.read()
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testsuite(json.loads(input), os.path.basename(filename))
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