Topic says it…my system openssl doesn’t support chacha-poly, so I’ve compiled and installed to /opt/openssl. How do I tell mitmproxy to use /opt/openssl? Thank you.
We use the cryptography library internally - if you update that, mitmproxy should pick up the changes right away. 
https://cryptography.io/en/latest/installation/#using-your-own-openssl-on-linux
Thank you. After following the instructions for Building Cryptography on Linux, Using Your Own OpenSSL on Linux, and Static Wheels, this is my result of sudo pip install mitmproxy:
Installing collected packages: mitmproxy, cryptography, urwid, hyperframe, hpack, blinker, backports.ssl-match-hostname, pyOpenSSL, six, html2text, lxml, construct, configargparse, pyperclip, certifi, Pillow, passlib, Flask, tornado, pyparsing, watchdog, requests, Werkzeug, Jinja2, itsdangerous, singledispatch, backports-abc, PyYAML, argh, pathtools, MarkupSafe
Found existing installation: cryptography 1.5.2
Uninstalling cryptography:
Successfully uninstalled cryptography
Running setup.py install for cryptography
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "/tmp/pip_build_root/cryptography/setup.py", line 335, in <module>
**keywords_with_side_effects(sys.argv)
File "/usr/lib/python2.7/distutils/core.py", line 111, in setup
_setup_distribution = dist = klass(attrs)
File "/usr/local/lib/python2.7/dist-packages/setuptools/dist.py", line 318, in __init__
_Distribution.__init__(self, attrs)
File "/usr/lib/python2.7/distutils/dist.py", line 287, in __init__
self.finalize_options()
File "/usr/local/lib/python2.7/dist-packages/setuptools/dist.py", line 376, in finalize_options
ep.load()(self, ep.name, value)
File "/usr/local/lib/python2.7/dist-packages/cffi/setuptools_ext.py", line 181, in cffi_modules
add_cffi_module(dist, cffi_module)
File "/usr/local/lib/python2.7/dist-packages/cffi/setuptools_ext.py", line 48, in add_cffi_module
execfile(build_file_name, mod_vars)
File "/usr/local/lib/python2.7/dist-packages/cffi/setuptools_ext.py", line 24, in execfile
exec(code, glob, glob)
File "src/_cffi_src/build_openssl.py", line 93, in <module>
extra_link_args=extra_link_args(compiler_type()),
File "/tmp/pip_build_root/cryptography/src/_cffi_src/utils.py", line 64, in build_ffi_for_binding
extra_link_args=extra_link_args,
File "/tmp/pip_build_root/cryptography/src/_cffi_src/utils.py", line 73, in build_ffi
ffi.cdef(cdef_source)
File "/usr/local/lib/python2.7/dist-packages/cffi/api.py", line 105, in cdef
self._cdef(csource, override=override, packed=packed)
File "/usr/local/lib/python2.7/dist-packages/cffi/api.py", line 119, in _cdef
self._parser.parse(csource, override=override, **options)
File "/usr/local/lib/python2.7/dist-packages/cffi/cparser.py", line 299, in parse
self._internal_parse(csource)
File "/usr/local/lib/python2.7/dist-packages/cffi/cparser.py", line 304, in _internal_parse
ast, macros, csource = self._parse(csource)
File "/usr/local/lib/python2.7/dist-packages/cffi/cparser.py", line 260, in _parse
ast = _get_parser().parse(csource)
File "/usr/local/lib/python2.7/dist-packages/cffi/cparser.py", line 40, in _get_parser
_parser_cache = pycparser.CParser()
File "/usr/local/lib/python2.7/dist-packages/pycparser/c_parser.py", line 87, in __init__
outputdir=taboutputdir)
File "/usr/local/lib/python2.7/dist-packages/pycparser/c_lexer.py", line 66, in build
self.lexer = lex.lex(object=self, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/pycparser/ply/lex.py", line 911, in lex
lexobj.readtab(lextab, ldict)
File "/usr/local/lib/python2.7/dist-packages/pycparser/ply/lex.py", line 233, in readtab
titem.append((re.compile(pat, lextab._lexreflags | re.VERBOSE), _names_to_funcs(func_name, fdict)))
File "/usr/lib/python2.7/re.py", line 190, in compile
return _compile(pattern, flags)
File "/usr/lib/python2.7/re.py", line 242, in _compile
p = sre_compile.compile(pattern, flags)
File "/usr/lib/python2.7/sre_compile.py", line 509, in compile
"sorry, but this version only supports 100 named groups"
AssertionError: sorry, but this version only supports 100 named groups
Complete output from command /usr/bin/python -c "import setuptools, tokenize;__file__='/tmp/pip_build_root/cryptography/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-m_dRSv-record/install-record.txt --single-version-externally-managed --compile:
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "/tmp/pip_build_root/cryptography/setup.py", line 335, in <module>
**keywords_with_side_effects(sys.argv)
File "/usr/lib/python2.7/distutils/core.py", line 111, in setup
_setup_distribution = dist = klass(attrs)
File "/usr/local/lib/python2.7/dist-packages/setuptools/dist.py", line 318, in __init__
_Distribution.__init__(self, attrs)
File "/usr/lib/python2.7/distutils/dist.py", line 287, in __init__
self.finalize_options()
File "/usr/local/lib/python2.7/dist-packages/setuptools/dist.py", line 376, in finalize_options
ep.load()(self, ep.name, value)
File "/usr/local/lib/python2.7/dist-packages/cffi/setuptools_ext.py", line 181, in cffi_modules
add_cffi_module(dist, cffi_module)
File "/usr/local/lib/python2.7/dist-packages/cffi/setuptools_ext.py", line 48, in add_cffi_module
execfile(build_file_name, mod_vars)
File "/usr/local/lib/python2.7/dist-packages/cffi/setuptools_ext.py", line 24, in execfile
exec(code, glob, glob)
File "src/_cffi_src/build_openssl.py", line 93, in <module>
extra_link_args=extra_link_args(compiler_type()),
File "/tmp/pip_build_root/cryptography/src/_cffi_src/utils.py", line 64, in build_ffi_for_binding
extra_link_args=extra_link_args,
File "/tmp/pip_build_root/cryptography/src/_cffi_src/utils.py", line 73, in build_ffi
ffi.cdef(cdef_source)
File "/usr/local/lib/python2.7/dist-packages/cffi/api.py", line 105, in cdef
self._cdef(csource, override=override, packed=packed)
File "/usr/local/lib/python2.7/dist-packages/cffi/api.py", line 119, in _cdef
self._parser.parse(csource, override=override, **options)
File "/usr/local/lib/python2.7/dist-packages/cffi/cparser.py", line 299, in parse
self._internal_parse(csource)
File "/usr/local/lib/python2.7/dist-packages/cffi/cparser.py", line 304, in _internal_parse
ast, macros, csource = self._parse(csource)
File "/usr/local/lib/python2.7/dist-packages/cffi/cparser.py", line 260, in _parse
ast = _get_parser().parse(csource)
File "/usr/local/lib/python2.7/dist-packages/cffi/cparser.py", line 40, in _get_parser
_parser_cache = pycparser.CParser()
File "/usr/local/lib/python2.7/dist-packages/pycparser/c_parser.py", line 87, in __init__
outputdir=taboutputdir)
File "/usr/local/lib/python2.7/dist-packages/pycparser/c_lexer.py", line 66, in build
self.lexer = lex.lex(object=self, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/pycparser/ply/lex.py", line 911, in lex
lexobj.readtab(lextab, ldict)
File "/usr/local/lib/python2.7/dist-packages/pycparser/ply/lex.py", line 233, in readtab
titem.append((re.compile(pat, lextab._lexreflags | re.VERBOSE), _names_to_funcs(func_name, fdict)))
File "/usr/lib/python2.7/re.py", line 190, in compile
return _compile(pattern, flags)
File "/usr/lib/python2.7/re.py", line 242, in _compile
p = sre_compile.compile(pattern, flags)
File "/usr/lib/python2.7/sre_compile.py", line 509, in compile
"sorry, but this version only supports 100 named groups"
AssertionError: sorry, but this version only supports 100 named groups
----------------------------------------
Rolling back uninstall of cryptography
Cleaning up...
Command /usr/bin/python -c "import setuptools, tokenize;__file__='/tmp/pip_build_root/cryptography/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-m_dRSv-record/install-record.txt --single-version-externally-managed --compile failed with error code 1 in /tmp/pip_build_root/cryptography
Storing debug log for failure in /home/jlay/.pip/pip.log
it appears that mitmproxy uninstalled my cryptography. Thank you.