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Gabe Appleton 2ac3bab2a6 bpo-37345: Add formal UDPLITE support (GH-14258) 
At the moment you can definitely use UDPLITE sockets on Linux systems, but it would be good if this support were formalized such that you can detect support at runtime easily.

At the moment, to make and use a UDPLITE socket requires something like the following code:

```
>>> import socket
>>> a = socket.socket(socket.AF_INET, socket.SOCK_DGRAM, 136)
>>> b = socket.socket(socket.AF_INET, socket.SOCK_DGRAM, 136)
>>> a.bind(('localhost', 44444))
>>> b.sendto(b'test'*256, ('localhost', 44444))
>>> b.setsockopt(136, 10, 16)
>>> b.sendto(b'test'*256, ('localhost', 44444))
>>> b.setsockopt(136, 10, 32)
>>> b.sendto(b'test'*256, ('localhost', 44444))
>>> b.setsockopt(136, 10, 64)
>>> b.sendto(b'test'*256, ('localhost', 44444))
```

If you look at this through Wireshark, you can see that the packets are different in that the checksums and checksum coverages change.

With the pull request that I am submitting momentarily, you could do the following code instead:

```
>>> import socket
>>> a = socket.socket(socket.AF_INET, socket.SOCK_DGRAM, socket.IPPROTO_UDPLITE)
>>> b = socket.socket(socket.AF_INET, socket.SOCK_DGRAM, socket.IPPROTO_UDPLITE)
>>> a.bind(('localhost', 44444))
>>> b.sendto(b'test'*256, ('localhost', 44444))
>>> b.set_send_checksum_coverage(16)
>>> b.sendto(b'test'*256, ('localhost', 44444))
>>> b.set_send_checksum_coverage(32)
>>> b.sendto(b'test'*256, ('localhost', 44444))
>>> b.set_send_checksum_coverage(64)
>>> b.sendto(b'test'*256, ('localhost', 44444))
```

One can also detect support for UDPLITE just by checking

```
>>> hasattr(socket, 'IPPROTO_UDPLITE')
```


https://bugs.python.org/issue37345
 		2019-06-24 02:58:56 -07:00
..
_blake2 bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
_ctypes bpo-37188: Fix a divide-by-zero in arrays of size-0 objects (#13881) 2019-06-07 10:13:26 +02:00
_decimal bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
_io Fix the error handling in bytesio_sizeof(). (GH-10459) 2019-06-02 00:07:45 +03:00
_multiprocessing bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
_sha3 bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
_sqlite bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
_ssl bpo-34271: Fix compatibility with 1.0.2 (GH-13728) 2019-06-03 20:40:15 +02:00
_xxtestfuzz bpo-29505: Fuzz json module, enforce size limit on int(x) fuzz (GH-13991) 2019-06-11 21:30:34 -07:00
cjkcodecs bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
clinic bpo-37266: Daemon threads are now denied in subinterpreters (GH-14049) 2019-06-14 18:55:22 +02:00
expat bpo-31374: expat doesn't include <pyconfig.h> on Windows (GH-11079) 2018-12-10 16:06:18 +01:00
README
…
Setup closes bpo-35184: Fix XML_POOR_ENTROPY option that breaks makesetup parsing of pyexpat line in Setup. (GH-13064) 2019-06-10 18:54:24 -07:00
_abc.c fix _abc.c compile error on Cygwin (GH-8445) 2019-02-24 10:30:14 +09:00
_asynciomodule.c bpo-37194: Add a new public PyObject_CallNoArgs() function (GH-13890) 2019-06-17 14:27:23 +02:00
_bisectmodule.c bpo-33012: Fix invalid function cast warnings with gcc 8. (GH-6749) 2018-11-27 13:27:31 +02:00
_bz2module.c bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
_codecsmodule.c bpo-36297: remove "unicode_internal" codec (GH-12342) 2019-03-18 15:44:11 +09:00
_collectionsmodule.c bpo-37165: Convert _count_elements to the argument clinic (GH-13848) 2019-06-05 16:05:25 -07:00
_contextvarsmodule.c bpo-34762: Fix contextvars C API to use PyObject* pointer types. (GH-9473) 2018-09-21 15:33:56 -04:00
_cryptmodule.c bpo-28503: Use crypt_r() when available instead of crypt() (GH-11373) 2018-12-30 15:42:32 -08:00
_csv.c Fix name of '\0'. (GH-14222) 2019-06-18 21:37:58 -07:00
_curses_panel.c bpo-35810: Incref heap-allocated types in PyObject_Init (GH-11661) 2019-03-27 12:52:18 +01:00
_cursesmodule.c bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
_datetimemodule.c bpo-37194: Add a new public PyObject_CallNoArgs() function (GH-13890) 2019-06-17 14:27:23 +02:00
_dbmmodule.c bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
_elementtree.c bpo-37194: Add a new public PyObject_CallNoArgs() function (GH-13890) 2019-06-17 14:27:23 +02:00
_functoolsmodule.c bpo-34303: Micro-optimizations in functools.reduce() (GH-8598) 2019-06-01 13:32:17 -07:00
_gdbmmodule.c bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
_hashopenssl.c bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
_heapqmodule.c bpo-34797: Convert heapq to the argument clinic (GH-9560) 2018-09-28 12:39:43 -07:00
_json.c bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
_localemodule.c bpo-36254: Fix invalid uses of %d in format strings in C. (GH-12264) 2019-03-13 22:59:55 +02:00
_lsprof.c bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
_lzmamodule.c bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
_math.c
…
_math.h
…
_opcode.c bpo-32455: Add jump parameter to dis.stack_effect(). (GH-6610) 2018-09-18 09:54:26 +03:00
_operator.c bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
_pickle.c bpo-37194: Add a new public PyObject_CallNoArgs() function (GH-13890) 2019-06-17 14:27:23 +02:00
_posixsubprocess.c bpo-35550: Fix incorrect Solaris define guards (GH-11275) 2018-12-30 18:16:40 -08:00
_queuemodule.c bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
_randommodule.c bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
_scproxy.c closes bpo-31903: Release the GIL when calling into SystemConfiguration (GH-4178) 2018-09-11 16:14:00 -07:00
_sre.c bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
_ssl.c bpo-37120: Add SSLContext.num_tickets (GH-13719) 2019-06-03 21:00:10 +02:00
_ssl_data.h
…
_stat.c
…
_struct.c bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
_testbuffer.c bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
_testcapimodule.c bpo-37169: Rewrite _PyObject_IsFreed() unit tests (GH-13888) 2019-06-07 16:22:21 +02:00
_testimportmultiple.c
…
_testinternalcapi.c bpo-36763: Implement the PEP 587 (GH-13592) 2019-05-27 16:39:22 +02:00
_testmultiphase.c bpo-32388: Remove cross-version binary compatibility requirement in tp_flags (GH-4944) 2019-05-29 22:12:38 +02:00
_threadmodule.c bpo-37266: Daemon threads are now denied in subinterpreters (GH-14049) 2019-06-14 18:55:22 +02:00
_tkinter.c bpo-37194: Add a new public PyObject_CallNoArgs() function (GH-13890) 2019-06-17 14:27:23 +02:00
_tracemalloc.c bpo-35134: Split traceback.h header (GH-13430) 2019-05-20 00:14:57 +02:00
_uuidmodule.c bpo-32493: Fix uuid.uuid1() on FreeBSD. (GH-7099) 2018-05-25 00:45:09 +02:00
_weakref.c bpo-32150: Expand tabs to spaces in C files. (#4583) 2017-11-28 17:56:10 +02:00
_winapi.c bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
_xxsubinterpretersmodule.c bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
addrinfo.h
…
arraymodule.c bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
atexitmodule.c bpo-33012: Fix invalid function cast warnings with gcc 8. (GH-6749) 2018-11-27 13:27:31 +02:00
audioop.c bpo-33781: audioop: enhance rounding double as int (GH-7447) 2018-06-06 15:50:50 +02:00
binascii.c bpo-22385: Support output separators in hex methods. (#13578) 2019-05-29 11:46:58 -07:00
cmathmodule.c bpo-36908: 'This module is always available' isn't helpful. (#13297) 2019-05-17 15:29:13 +05:30
config.c.in rename _imp initialization function to follow conventions (#5432) 2018-01-29 11:33:57 -08:00
errnomodule.c
…
faulthandler.c bpo-36763: Implement the PEP 587 (GH-13592) 2019-05-27 16:39:22 +02:00
fcntlmodule.c bpo-26835: Add file sealing constants to fcntl (GH-13694) 2019-05-31 18:32:33 +02:00
gc_weakref.txt
…
gcmodule.c bpo-32388: Remove cross-version binary compatibility requirement in tp_flags (GH-4944) 2019-05-29 22:12:38 +02:00
getaddrinfo.c bpo-32241: Add the const qualifire to declarations of umodifiable strings. (#4748) 2017-12-12 13:55:04 +02:00
getbuildinfo.c
…
getnameinfo.c
…
getpath.c bpo-36763: Implement the PEP 587 (GH-13592) 2019-05-27 16:39:22 +02:00
grpmodule.c bpo-34604: Use %R because of invisible characters or trailing whitespaces. (GH-9165) 2018-12-05 21:10:18 +02:00
hashlib.h bpo-31370: Remove support for threads-less builds (#3385) 2017-09-07 18:56:24 +02:00
hashtable.c bpo-36594: Fix incorrect use of %p in format strings (GH-12769) 2019-05-06 12:56:50 -04:00
hashtable.h
…
itertoolsmodule.c bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
ld_so_aix.in
…
main.c bpo-37253: Add _PyCompilerFlags_INIT macro (GH-14018) 2019-06-13 02:16:41 +02:00
makesetup closes bpo-34212: Build core extension modules with Py_BUILD_CORE_BUILTIN. (GH-8712) 2018-11-26 20:21:31 -06:00
makexp_aix
…
mathmodule.c bpo-37315: Deprecate accepting floats in math.factorial(). (GH-14147) 2019-06-17 16:57:27 +03:00
md5module.c bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
mmapmodule.c bpo-37316: mmap.mmap() passes the wrong variable to PySys_Audit() (GH-14152) 2019-06-21 08:31:59 -07:00
nismodule.c bpo-35356: Fix a possible reference leak in nis.maps(). (GH-10808) 2018-11-30 09:40:16 +02:00
ossaudiodev.c bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
overlapped.c bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
parsermodule.c bpo-37253: Add _PyCompilerFlags_INIT macro (GH-14018) 2019-06-13 02:16:41 +02:00
posixmodule.c bpo-35134: Add Include/cpython/import.h header file (GH-14213) 2019-06-19 00:48:09 +02:00
posixmodule.h bpo-33441: Make the sigset_t converter available in other modules. (GH-6720) 2018-05-08 07:48:50 +03:00
pwdmodule.c bpo-34604: Use %R because of invisible characters or trailing whitespaces. (GH-9165) 2018-12-05 21:10:18 +02:00
pyexpat.c bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
readline.c bpo-37194: Add a new public PyObject_CallNoArgs() function (GH-13890) 2019-06-17 14:27:23 +02:00
resource.c bpo-34674: Assume unistd.h exists on Unix. (GH-9290) 2018-09-13 21:57:31 -07:00
rotatingtree.c
…
rotatingtree.h bpo-32150: Expand tabs to spaces in C files. (#4583) 2017-11-28 17:56:10 +02:00
selectmodule.c bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
sha1module.c bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
sha256module.c bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
sha512module.c bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
signalmodule.c Revert "bpo-33608: Factor out a private, per-interpreter _Py_AddPendingCall(). (gh-13714)" (GH-13780) 2019-06-03 18:14:24 +02:00
socketmodule.c bpo-37345: Add formal UDPLITE support (GH-14258) 2019-06-24 02:58:56 -07:00
socketmodule.h bpo-31425: Expose AF_QIPCRTR in socket module (GH-3706) 2018-09-26 16:47:52 +03:00
spwdmodule.c [security] bpo-13617: Reject embedded null characters in wchar* strings. (#2302) 2017-06-28 08:30:06 +03:00
sre.h bpo-25054, bpo-1647489: Added support of splitting on zerowidth patterns. (#4471) 2017-12-04 14:29:05 +02:00
sre_constants.h bpo-31690: Allow the inline flags "a", "L", and "u" to be used as group flags for RE. (#3885) 2017-10-24 23:31:42 +03:00
sre_lib.h bpo-34294: re module, fix wrong capturing groups in rare cases. (GH-11546) 2019-02-18 15:26:37 +02:00
symtablemodule.c bpo-37253: Add _PyCompilerFlags_INIT macro (GH-14018) 2019-06-13 02:16:41 +02:00
syslogmodule.c bpo-33012: Fix invalid function cast warnings with gcc 8. (GH-6749) 2018-11-27 13:27:31 +02:00
termios.c Fix a possible "double decref" in termios.tcgetattr(). (GH-10194) 2018-10-29 06:55:20 +02:00
testcapi_long.h
…
timemodule.c bpo-36779: time.tzname returns empty string on Windows if default cod… (GH-13073) 2019-06-12 16:13:27 -07:00
tkappinit.c
…
tkinter.h
…
unicodedata.c bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
unicodedata_db.h closes bpo-36861: Update Unicode database to 12.1.0. (GH-13214) 2019-05-08 20:59:35 -07:00
unicodename_db.h closes bpo-36861: Update Unicode database to 12.1.0. (GH-13214) 2019-05-08 20:59:35 -07:00
winreparse.h bpo-31512: Add non-elevated symlink support for Windows (GH-3652) 2019-04-09 11:19:46 -07:00
xxlimited.c bpo-32388: Remove cross-version binary compatibility requirement in tp_flags (GH-4944) 2019-05-29 22:12:38 +02:00
xxmodule.c bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
xxsubtype.c bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
zlibmodule.c bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00

README 

Source files for standard library extension modules,
and former extension modules that are now builtin modules.