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| author | Christian Heimes <christian@python.org> | 2018-02-27 07:55:39 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2018-02-27 07:55:39 (GMT) |
| commit | 05d9fe32a1245b9a798e49e0c1eb91f110935b69 (patch) | |
| tree | 91689b53a92b61a2a2d7441a5d51c118cf140538 /Doc/library/ssl.rst | |
| parent | 2fa6b9eae07e2385e2acbf2e40093a21fb3a10c4 (diff) | |
| download | cpython-05d9fe32a1245b9a798e49e0c1eb91f110935b69.zip cpython-05d9fe32a1245b9a798e49e0c1eb91f110935b69.tar.gz cpython-05d9fe32a1245b9a798e49e0c1eb91f110935b69.tar.bz2 | |
bpo-32947: OpenSSL 1.1.1-pre1 / TLS 1.3 fixes (#5663)
* bpo-32947: OpenSSL 1.1.1-pre1 / TLS 1.3 fixes
Misc fixes and workarounds for compatibility with OpenSSL 1.1.1-pre1 and
TLS 1.3 support. With OpenSSL 1.1.1, Python negotiates TLS 1.3 by
default. Some test cases only apply to TLS 1.2. Other tests currently
fail because the threaded or async test servers stop after failure.
I'm going to address these issues when OpenSSL 1.1.1 reaches beta.
OpenSSL 1.1.1 has added a new option OP_ENABLE_MIDDLEBOX_COMPAT for TLS
1.3. The feature is enabled by default for maximum compatibility with
broken middle boxes. Users should be able to disable the hack and CPython's test suite needs
it to verify default options.
Signed-off-by: Christian Heimes <christian@python.org>
Diffstat (limited to 'Doc/library/ssl.rst')
| -rw-r--r-- | Doc/library/ssl.rst | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/Doc/library/ssl.rst b/Doc/library/ssl.rst index 7371024..5d5232e 100644 --- a/Doc/library/ssl.rst +++ b/Doc/library/ssl.rst @@ -831,6 +831,15 @@ Constants .. versionadded:: 3.3 +.. data:: OP_ENABLE_MIDDLEBOX_COMPAT + + Send dummy Change Cipher Spec (CCS) messages in TLS 1.3 handshake to make + a TLS 1.3 connection look more like a TLS 1.2 connection. + + This option is only available with OpenSSL 1.1.1 and later. + + .. versionadded:: 3.8 + .. data:: OP_NO_COMPRESSION Disable compression on the SSL channel. This is useful if the application |