| Commit message (Collapse) | Author | Age |
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This allows a URL object to be used for dialing, which may
be easier than using a string if you already have the URL object.
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This is intended to replace NNG_OPT_URL.
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This is simpler, and more reliable than using socket options.
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This also arranges to clean up the maps at nng_fini time.
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fixes #1288 id allocation can overallocate
fixes #1126 consider removing lock from idhash
This substantially refactors the id hash code, giving a cleaner API,
and eliminating a extra locking as well as some wasteful allocations.
The ZeroTier code has it's own copy, that is 64-bit friendly, as the
rest of the consumers need only a simpler 32-bit API.
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fixes #698 Need TCP stats
fixes #699 Need IPC stats
fixes #701 Need TLS stats
This commit addresses a problem when negotiating using one of the stream
based negotiation APIs -- a slow or misbehaving peer can prevent well
behaved ones from establishing a connection. The fix is a fairly
significant change in how these transports link up, and it does rely
on the fact that the socket only has a single accept() or connect()
pending at a time (on a given endpoint that is).
While here, we have completely revamped the way transport statistics are
done, offering a standard API for collecting these statistics.
Unfortunately, this completely borks the statistics for inproc. As we
are planning to change the way inproc works soon, in order to provide
more control and work on performance fixes for the message queue, we feel
this is an acceptable trade-off. Furthermore, almost nobody uses inproc
for anything, and even fewer people are making use of the statistics
at this time.
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Some more changes to use nni_type instead of nni_opt_type
are included as well.
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This introduces new public APIs for obtaining statistics,
and adds some generic stats for dialers, listeners, pipes, and
sockets. Also added are stats for inproc and pairv1 protocol.
The other protocols and transports will have stats added
incrementally as time goes on.
A simple test program, and man pages are provided for this.
Start by looking at nng_stat(5).
Statistics does have some impact, and they can be disabled by
using the advanced NNG_ENABLE_STATS (setting it to OFF, it's
ON by default) if you need to build a minimized configuration.
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fixes #170 Make more use of reaper
This is a complete restructure/rethink of how child objects interact
with the socket. (This also backs out #576 as it turns out not to be
needed.) While 568 says reader/writer lock, for now we have settled
for a single writer lock. Its likely that this is sufficient.
Essentially we use the single socket lock to guard lists of the socket
children. We also use deferred deletion in the idhash to facilitate
teardown, which means endpoint closes are no longer synchronous.
We use the reaper to clean up objects when the reference count drops
to zero. We make a special exception for pipes, since they really
are not reference counted by their parents, and they are leaf objects
anyway.
We believe this addresses the main outstanding race conditions in
a much more correct and holistic way.
Note that endpoint shutdown is a little tricky, as it makes use of
atomic flags to guard against double entry, and against recursive
lock entry. This is something that would be nice to make a bit more
obvious, but what we have is safe, and the complexity is at least
confined to one place.
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This separates the plumbing for endpoints into distinct
dialer and listeners. Some of the transports could benefit
from further separation, but we've done some rather larger
separation e.g. for the websocket transport.
IPC would be a good one to update later, when we start looking
at exposing a more natural underlying API.
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