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We should not attempt to keep the context and re-establish the
TLS connection for several reasons:
1. Maintain symmetry between redisConnect() and redisReconnect(), so in
both cases an extra step is required to initiate SSL.
2. The caller may also wish to reconfigure the SSL session and needs a
chance to do that.
3. It is not a practical thing to do on an async non-blocking connection
context.
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Port RESP3 support from Redis.
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This corresponds to commits d5c54f0b..bea09a7f in the redis repository.
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With this change, Hiredis builds with MinGW and runs on Windows.
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The redisFD type should be equal to the system native socket file
desciptor type (for POSIX, this is a plain int).
We also introduce the REDIS_INVALID_FD value, which maps to -1 on POSIX
systems.
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This makes hiredis.c free from system calls related to socket I/O. This
is also makes the treatment of raw socket connections more similar to
the SSL backend.
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This helps us detect use-after-free
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also, clean up redisContextInit -- we're just zeoring the struct
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This reduces the boilerplate of all the redisConnectXXX functions, and
allows us to provide more connection options in the future.
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Referred to redisContextReadReply which I cannot find in this codebase
nor the old redis-tools one. Presumably this meant to say
redisGetReplyFromReader which is how redisBufferRead is used in this
file. Could've also meant the interface function redisReaderGetReply.
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This retrieves the actual error which occurred, as getsockopt is not
always reliable in this regard.
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This makes createArray consistent with createString, which also takes
size_t. Bounds-check and unit tests are updated to allow up to
min(SIZE_MAX,LLONG_MAX).
Changelog is updated to mention this API break.
Signed-off-by: Justin Brewer <jzb0012@auburn.edu>
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free(NULL) is a valid NOP. Most of the hiredis free functions behave the
same way. redisReaderFree is updated to also be NULL-safe.
There is one redundant NULL check at sds.c:1036, but it's left as is
since sds is imported from upstream.
Signed-off-by: Justin Brewer <jzb0012@auburn.edu>
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calloc is guaranteed to provide a zero-initialized buffer. There is
no need to set fields to zero explicitly.
Signed-off-by: Justin Brewer <jzb0012@auburn.edu>
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Since _GNU_SOURCE is now guaranteed to be unset, it is no longer
necessary to support the GNU-specific version of strerror_r.
Drop __redis_strerror_r from the header, and call strerror_r directly.
This breaks any external users of this macro, but they shouldn't have
been using it in the first place.
Signed-off-by: Justin Brewer <jzb0012@auburn.edu>
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this issue is very significant, because not allow the proper execution of the "function redisCommandArgv". The server returns "invalid bulk length".
Thanks!
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connection"
This reverts commit 1db17f257b1999114c699e77e204f1a91143e5ad.
If the `REDIS_CONNECTED` flag is cleared,
the async onDisconnect callback function will never be called.
This causes problems as the disconnect is never reported back to the user.
Closes #359
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encountering defined constant 'unix' in GNU C environment (see commit d8145d79ce715054980938c751067ebaa541573c).
Not all code using hiredis can compile using '-std=c99', and/or not all users are able to easily make that change to the build process of various open-source projects, so it is more pragmatic to choose a different identifier that does not impose this requirement.
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Originally implemented by @abedra as part of #306.
In case a write or read times out, we force an error state, because we
can't guarantuee that the next read will get the right data.
Instead we need to reconnect to have a clean-state connection, which is
now easily possible with this method.
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This replaces the old intlen() implementation with a slightly
faster way of counting digits.
Implementation taken from the same place where digits10() in
redis/src/util.c came from.
The old 'intlen' allowed negative inputs, but no usage in hiredis
was passing negative numbers, so that ability is removed. Also,
the new implementation can count higher (uint64_t) instead of
limited to just int as before.
Fixes #295 by replacing implementation
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The strerror_r API has two flavors depending on system options.
The bad flavor uses a static buffer for returning results, so if
you save the pointer from strerror_r, the string you're referencing
becomes useless if anybody else calls strerror_r again
The good flavor does what you expect: it writes the error to your buffer.
This commit uses strerror_r directly if it's a good version or copies
the static buffer into our private buffer if it's a bad version.
Thanks to gemorin for explaining the problem and drafting a fix.
Fixes #239
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Makes hiredis reading functions easier to include in external projects
[fixed all merge conflicts against current version]
Closes #249
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Previously, redisvAppendCommand() would return OOM even with formatting
errors. Now we use OTHER with an error string telling the user the
error was formatting related, not memory related.
This also fixes a potentially worse bug where were would pass error result
of -1 as an actual length to another function taking an unsigned length,
which would result in crash/overallocation/errors. Now for that case,
we just return an error immediately and stop processing the command.
Fixes #177
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If realloc fails, the curargv will be NULL.
Closes #253
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Check whether the obuf or reader is empty: if one of the items is empty,
free the redisContext.
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Flags can occur in any order in format string, so we can't assume any order.
In original code, the redisvFormatCommand can process " %#+d" correctly,
but can't process "%+#d".
Closes #257
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External callers may not know about sdsfree, so let's
give them an easy way to know how to free their sds result.
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[Cleaned up:
- name of function: freeRedis... -> redisFree...
- return value of function (free doesn't return anything)
- parameter type for function.
- we don't need to free a char**, the char** is just
for returning from the assignment functoin.]
Closes #250
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[This introduces some new API functions.]
* Adds new flag to the connection context indicating SO_REUSEADDR
should be set.
* Adds max number of retries constant for when connect() hits
EADDRNOTAVAIL.
* Adds new function, redisAsyncConnectBindWithReuse(), letting
clients enable this functionality.
[Removed trailing whitespace in new header lines.]
Closes #264
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[It doesn't _actually_ matter, but technically
the order argument is: (number of items, size of items)]
Closes #279
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OK, perhaps the second time is a charm. I forgot that I had
hiredis forked from a long time ago, so the initial pull
request was hosed. :)
* Pulled in sdscatfmt() from Redis, and modified it to accept a
size_t (%T) style format specifier.
* Pulled in sdsll2str() and sdsull2str() from Redis (needed by
sdscatfmt).
* Added a new method, redisFormatSdsCommandArgv() which takes
and sds* as the target, rather than char* (and uses sdscatfmt
instead of sprintf for the construction).
I get roughly the following improvement:
Old: 1.044806
New: 0.481620
The benchmark code itself can be found here:
https://gist.github.com/michael-grunder/c92ef31bb632b3d0ad81
Closes #260
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Make redisFree() and freeReplyObject() less surprising by behaving just
like free(). That is, don't crash when passing in NULL.
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SDS is now broken out of Redis into its own project, so include
the latest version from the SDS repo.
This is a backport of the Redis commit doing the same to the bundled hiredis:
https://github.com/antirez/redis/commit/320fa02b9b48ee1c63d88db6344fc0d328e24853
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Closes #202
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These allows for easier integration of hiredis with external
code that wants to manage its fds, say for instance in a pool.
Closes #223
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