Rules:
1. Constants are uppercase names: THE_CONSTANT.
2. SUE[1] types start with an uppercase letter and have at least one
lowercase letter in it: The_Type, THE_Type.
3. Function types end in "_cb": tox_friend_connection_cb.
4. Variable and function names are all lowercase: the_function.
This makes it easier for humans reading the code to determine what an
identifier means. I'm not convinced by the enum type name change, but I
don't know a better rule. Currently, a lot of enum types are spelled like
constants, which is confusing.
[1] struct/union/enum
These display some idea, but the tests are not implemented correctly. We
will need to implement the idea correctly later, but for now we can't use
these.
* Consistently use `num_packets_array` to get the packet count in the
packet buffer.
* Use `const` in more places.
* Typo fix: begginning.
* Rewrite `length < 1` for unsigned int to `length == 0`.
* Limit scope of some loop variables by using for-init-decl.
* Use early return in error paths to reduce indentation and for clarity.
* Use `net_unpack_*` instead of manual `ntohs`.
* Fix an uninitialised stack variable copy.
* Fix a potential null pointer dereference.
* Consistently use `get_crypto_connection`. It was inlined in some
places. I de-inlined it now.
* Add Loggers to some functions in preparation for adding log statements.
Mostly documentation + comments. Some cases where code was removed
in exchange for more compact/less sprawly for loops. Introduced a
function that removed like 30 lines of repeated code.
Rename args `host:port` from `address:port`.
The *address* is well known as *Tox Address* in this project. Then we
should reserve *addres* to it, and use *host* to express the hostname or
IP address in TCP domain.
The C compiler warns because the value is initialised in a loop and used
outside of it. In this case, it's always initialised, but changing the
value of `NUM_PORTS` can change that.
Better error messages, better sleep() call placements, etc.
Did not modify large chunk of function because I couldn't explain
it. Maybe I'll come back later once I've regained lost brain cells.
This triggers a code path in Persistent Group Chats that causes a memory
leak. I'm adding this test now, so that we don't merge PGC without fixing
the memory leak first.
Fixes#868
Is made by:
1. Fix enumeration mechanism of Crypto_Connection instances in function send_crypto_packets()
(this item solves the main problem);
2. Disruption of correlation between parameters of different dimensions
(the parameters MAX_NUM_SENDPACKET_TRIES and UDP_DIRECT_TIMEOUT have different dimensions).
