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**What are we doing?**
We are moving towards stateless callbacks. This means that when registering a
callback, you no longer pass a user data pointer. Instead, you pass a user data
pointer to tox_iterate. This pointer is threaded through the code, passed to
each callback. The callback can modify the data pointed at. An extra indirection
will be needed if the pointer itself can change.
**Why?**
Currently, callbacks are registered with a user data pointer. This means the
library has N pointers for N different callbacks. These pointers need to be
managed by the client code. Managing the lifetime of the pointee can be
difficult. In C++, it takes special effort to ensure that the lifetime of user
data extends at least beyond the lifetime of the Tox instance. For other
languages, the situation is much worse. Java and other garbage collected
languages may move objects in memory, so the pointers are not stable. Tox4j goes
through a lot of effort to make the Java/Scala user experience a pleasant one by
keeping a global array of Tox+userdata on the C++ side, and communicating via
protobufs. A Haskell FFI would have to do similarly complex tricks.
Stateless callbacks ensure that a user data pointer only needs to live during a
single function call. This means that the user code (or language runtime) can
move the data around at will, as long as it sets the new location in the
callback.
**How?**
We are doing this change one callback at a time. After each callback, we ensure
that everything still works as expected. This means the toxcore change will
require 15 Pull Requests.
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Also, fix the hstox build that was taking half an hour. It now takes 5 minutes.
Also, perform distcheck on travis to ensure that make dist works. It's not
actually failing the build at the moment due to broken tests.
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We run astyle on Travis and check if there is a diff. The build terminates if
git finds a difference.
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> increased the timeout for TCP tests because per @irungentoo the network on Travis-CI can be slow sometimes
> allowed groupchats test to restart on error until timeout This had to be done because current groupchats are fundamentally broken and 3/5 times they'll 'net-split' on connect
>> Drop group chat tests, add comment to the reason
> added some debugging information to TCP tests, and a #define to force IPV6 (Travis-CI only uses IPv4 on their containers) and decreased the itr interval
> Went crazy with timeouts for Tox network stuff on Travis. Tests on TCP will still randomly fail due to timeouts. I can't reproduce on any local system. So again per @irungentoo, Travis is slow, let's offer it a short bus.
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Some of these (like the incompatible pointers one) are really annoying for
later refactoring.
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* Add #defines for INET/INET6 returns
* Remove magic number 3 - exact AF_INET/INET6 result found.
* Updated network_test.c
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Fixed bug from merged PR.
Don't build useless files when building with libsodium.
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fix: make increment_nonce & increment_nonce_number independent of user-controlled input
fix: make crypto_core more stable agains null ptr dereference
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Some test fixes.
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on LAN.
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Add a way to select the type of savedata (normal savedata, load a
secret key, potentially others?) to load.
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Calculate public key from it.
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