Minor feature release

List of changes in this release:

• Enable setting HTTP Keep-Alive use on/off for C++ and Qt
• Some build fixes/improvements

Bugfix release

Changes:

• Enable reading system DNS on Windows
• Small fixes in system DNS reading/parsing
• Various little cleanups and fixes (better support for C++11, silence some compiler/code checker warnings...)

Async DNS release

Release v2.4.0

Features:

• Callback interface uses (our own) async DNS for fully non-blocking I/O (this was a compile time option, off by default, now it's what we always do in the callback interface)
• Enable sending meta data when publishing
• Enable setting norep (don't replicate) when publishing (with store=false, publish becomes "fire")
• On MacOS, use SO_NOSIGPIPE to avoid SIGPIPE on the socket

Bug fixes:

• Bad handling of new transaction started in the callback and HTTP keep-alive was active
• Bad handling of error (connection lost) when starting a new transaction on a HTTP kept-alive connection

Bug fix release

• On Linux, use MSG_NOSIGNAL to avoid SIGPIPE on send()
• Add API to read proxy configuration
• Avoid (currently harmless) inconsistent locking order
• Fix HTTP GET & CONNECT proxy w/HTTP Keep-Alive
• Send up-to-date version info in User-Agent HTTP header
• Various smaller fixes and logging improvements.

2.3.2: Merge pull request #42 from pubnub/develop

Develop

Bug fix release

• Fix reading from OpenSSL in a loop, as one read gets us at most one TLS record, while there may be more than one in the TCP/IP buffer
• Fix minor race condition in timer expiry

Minor release

The main feature of this release is HTTP keep-alive support. C-core will now keep the TCP or TLS connection alive after a transaction ends and will re-use it for the next transaction, thus, in regular case, make transactions be much faster and use less resources (bandwidth, CPU...). It is on by default, but can be turned off.

There are several bug fixes and cleanups, too.

Bug fix release

Fix bug in timer lists: If the first context in the list (the next one to expire) was removed from the list, the next one wouldn't get its "time to expire", but would be left with "what it had", causing it to expire sooner.

Some other cleanups of issue reported by static analyzers, all minor.

Bug fix release

A (mostly) complete list of bug fixes and cleanups in this release:

• Added some ASSERTs to check buffer access. These should not happen, but,
  if there's some bug, they will, so: ASSERT()

• Fixed and updated unit tests

• Fix receiving data longer than a http_buf at a time

  If we had received data from Pubnub server that is longer than the
  size of our HTTP ("scratchpad") buffer, we would mishandle that. It
  wouldn't show often, as default size of the buffer on Windows and
  POSIX was 32000 octets, which is longer than most HTTP replies.

  This was actually a regression introduced in commit 03dfd2c.

  This prompted a "small scale refactoring" of the buffer handling,
  which is now a little simpler, more resilent, uses less memory and
  fixes some other corner-cases which probably couldn't happen "as-is",
  but, just like this regression, could have "awaken" with some other
  "innocent looking" change.

• Handle HTTP chunks larger than http_buff

  This was merely being too eager to reject long chunks. If the chunk
  is largert then http_buff, we can simply get it in several
  iterations. Of course, it may turn out that the chunk is too big to
  fit in the reply buffer, but, no need to reject it beforehand.

• Fix compiler and static check warnings on Windows

  Various fixes for compiler warnings and static check errors/warnings
  reported by MSVC, clang-analyzer (scan-build) and CppCheck.

  Also, the Makefile for GCC on Windows was updated and now builds
  basic examples.

• Support OpenSSL 1.1.0+, BIO_(s|g)et_conn_ip ->
  BIO_(s|g)et_conn_address

• Some NMake preprocessor magic to detect the
  .libs to use, as this has changed in 1.1.0+,
  at least in OpenSSL "distribution" we use

• The Base64 encoded length was not correctly calculated in all cases

• Introduced a new Base64 helper function to calculate the needed size of
  the char array for the encoded string

• A small bug in Base64 decoder was fixed.

• Other than that, some undefined behavior removed and some style improvements.

Bug-fix release

• Fix some Mac build issues
• Fix high CPU utilization when network out on POSIX/Mac
• Fix off-by-one error