Commit Graph

244 Commits

Author SHA1 Message Date
moneromooo-monero
b50182aee7
p2p: don't connect to seeds if using an exclusive peer 2018-01-17 11:17:21 +00:00
stoffu
6d8b29ef28
fix some link errors in debug mode for macos 2018-01-10 01:57:56 +00:00
Riccardo Spagni
c611cca462
Merge pull request #2928
d28c388f p2p: stop net server before closing starting connections (moneromooo-monero)
2017-12-25 21:19:58 +02:00
moneromooo-monero
fe568db83d
p2p: use size_t for arbitrary counters instead of uint8_t 2017-12-18 15:15:10 +00:00
Riccardo Spagni
066fd7aced
Merge pull request #2877
43f5269f Wallets now do not depend on the daemon rpc lib (moneromooo-monero)
bb89ae8b move connection_basic and network_throttle from src/p2p to epee (moneromooo-monero)
4abf25f3 cryptonote_core does not depend on p2p anymore (moneromooo-monero)
2017-12-17 12:59:44 +02:00
moneromooo-monero
bb89ae8b20
move connection_basic and network_throttle from src/p2p to epee
These even had the epee namespace.
This fixes some ugly circular dependencies.
2017-12-16 23:28:43 +00:00
moneromooo-monero
4abf25f3c9
cryptonote_core does not depend on p2p anymore
As a followon side effect, this makes a lot of inline code
included only in particular cpp files (and instanciated
when necessary.
2017-12-16 23:28:38 +00:00
moneromooo-monero
09ce03d612
move includes around to lessen overall load 2017-12-16 22:46:38 +00:00
Riccardo Spagni
8da24c2a57
Merge pull request #2878
abebe392 rpc: add offline state in info rpc (moneromooo-monero)
7696e849 core: make --offline also disable DNS lookups (moneromooo-monero)
2017-12-16 23:27:00 +02:00
moneromooo-monero
d28c388f88
p2p: stop net server before closing starting connections
This fixes a hang on exit due to race where a connection adds
itself to the server after the starting connections are closed,
but before the net server marks itself as stopped.
2017-12-15 10:31:12 +00:00
moneromooo-monero
7696e84952
core: make --offline also disable DNS lookups 2017-11-30 15:35:52 +00:00
rbrunner7
cf5f623616 Corrections in rate limiting / trottle code, especially in 'out' direction
Deleted 3 out of 4 calls to method connection_basic::sleep_before_packet
that were erroneous / superfluous, which enabled the elimination of a
"fudge" factor of 2.1 in connection_basic::set_rate_up_limit;
also ended the multiplying of limit values and numbers of bytes
transferred by 1024 before handing them over to the global throttle
objects
2017-11-28 21:18:01 +01:00
Riccardo Spagni
edebe4e3b6
Merge pull request #2736
0d9c0db9 Do not build against epee_readline if it was not built (Howard Chu)
178014c9 split off readline code into epee_readline (moneromooo-monero)
a9e14a19 link against readline only for monerod and wallet-wallet-{rpc,cli} (moneromooo-monero)
437421ce wallet: move some scoped_message_writer calls from the libs (moneromooo-monero)
e89994e9 wallet: rejig to avoid prompting in wallet2 (moneromooo-monero)
ec5135e5 move input_line from command_line to simplewallet (moneromooo-monero)
082db75f move cryptonote command line options to cryptonote_core (moneromooo-monero)
2017-11-14 21:31:51 +02:00
moneromooo-monero
082db75f28
move cryptonote command line options to cryptonote_core
Those have no reason to be in a generic module
2017-11-14 17:06:19 +00:00
moneromooo-monero
383ff4f689
remove "using namespace std" from headers
It's nasty, and actually breaks on Solaris, where if.h fails to
build due to:

  struct map *if_memmap;
2017-11-14 16:56:10 +00:00
moneromooo-monero
7dbf76d0da
Fix an object lifetime bug in net load tests
The commands handler must not be destroyed before the config
object, or we'll be accessing freed memory.

An earlier attempt at using boost::shared_ptr to control object
lifetime turned out to be very invasive, though would be a
better solution in theory.
2017-10-09 16:46:42 +01:00
Lee Clagett
8b00687735 Upgrades to epee::net_utils::network_address
- internal nullptr checks
  - prevent modifications to network_address (shallow copy issues)
  - automagically works with any type containing interface functions
  - removed fnv1a hashing
  - ipv4_network_address now flattened with no base class
2017-10-05 11:57:09 -04:00
moneromooo-monero
8e0670c684
version: fix link to new version strings
p2p uses it, and the cpp file needs to know the symbols should
be public
2017-09-25 19:01:56 +01:00
Riccardo Spagni
c2346c6c59
Merge pull request #2424
28b72b6e tx_pool: pre-init tvc.m_verifivation_failed before processing (moneromooo-monero)
50a629b2 core_tests: catch (impossible in practice) tx extra api failure (moneromooo-monero)
fee15ef1 wallet2: catch failure to parse address (moneromooo-monero)
1399e26d net_peerlist: remove dead code (moneromooo-monero)
50e09698 tx_pool: guard against failure getting tx hash (moneromooo-monero)
54cc209a wallet_rpc_server: catch failure to create directory (moneromooo-monero)
3e55099c wallet_rpc_server: init m_vm to NULL in ctor (moneromooo-monero)
7d0dde5e wallet_args: remove redundant default value for --log-file (moneromooo-monero)
ed4a3350 wallet2: catch failure to save keys file (moneromooo-monero)
44434c8a wallet2_api: check whether dynamic_cast returns NULL (moneromooo-monero)
92f2f687 core: check return value from parse_hexstr_to_binbuff (moneromooo-monero)
5475692e wallet2_api: remove an unused, uninitialized, field (moneromooo-monero)
a7ba3de1 libwallet_api_tests: initialize newblock_triggered on reset (moneromooo-monero)
b2763ace wallet2_api: init error code to "no error" in the ctor (moneromooo-monero)
b5faac53 get_blockchain_top now returns void (moneromooo-monero)
2e44d8f2 wallet_rpc_server: guard against exceptions (moneromooo-monero)
4230876b simplewallet: guard against I/O exceptions (moneromooo-monero)
06c1e057 daemon: initialize decode_as_json in RPC request (moneromooo-monero)
11f71af5 http_base: init size_t in http_request_info ctor (moneromooo-monero)
2017-09-25 16:52:27 +02:00
Riccardo Spagni
b911130a46
Merge pull request #2442
e29282d2 build: auto update version info without manually deleting version.h (stoffu)
2017-09-25 16:50:35 +02:00
moneromooo-monero
1399e26d7e
net_peerlist: remove dead code
CID 175290
2017-09-25 15:48:45 +01:00
Riccardo Spagni
174f2fb4da
Merge pull request #2428
054054c9 p2p: disable gray list housekeeping when an exclusive node is given (moneromooo-monero)
2017-09-25 16:46:26 +02:00
Riccardo Spagni
07312a7d6e
Merge pull request #2302
ef005f5e p2p: add a couple early outs when the stop signal is received (moneromooo-monero)
80d361c7 abstract_tcp_server2: improve tracking/cancelling of early connections (moneromooo-monero)
2017-09-21 10:11:33 +02:00
stoffu
e29282d208
build: auto update version info without manually deleting version.h 2017-09-21 07:47:37 +09:00
Riccardo Spagni
75563db6e3
Merge pull request #2376
e3680b69 Rename m_listenning_port to m_listening_port (MaxXor)
a1ea475f Delete UPnP port mapping on exit (MaxXor)
2017-09-20 21:33:21 +02:00
moneromooo-monero
054054c92f
p2p: disable gray list housekeeping when an exclusive node is given
Exclusive nodes may be used for privacy reasons, and thus we don't
want to connect to other nodes, even for checking connectivity.

See https://github.com/monero-project/monero/issues/2346
2017-09-10 13:11:42 +01:00
Riccardo Spagni
5551fcf60b
Merge pull request #2329
e3c4395a p2p: init hashes after deserializing a network address (moneromooo-monero)
2017-09-02 11:29:40 +02:00
MaxXor
e3680b6936 Rename m_listenning_port to m_listening_port 2017-09-01 09:50:22 +02:00
MaxXor
a1ea475fff Delete UPnP port mapping on exit 2017-08-29 23:28:23 +02:00
moneromooo-monero
5524bc3151
print peer id in 0 padded hex for consistency 2017-08-23 13:37:56 +01:00
moneromooo-monero
e3c4395ab7
p2p: init hashes after deserializing a network address
Fixes multiple connections to the same address
2017-08-23 13:32:02 +01:00
moneromooo-monero
70b8c6d77a
cryptonote_protocol: misc fixes to the new sync algorithm
Fix sync wedge corner case:
It could happen if a connection went into standby mode, while
it was the one which had requested the next span, and that span
was still waiting for the data, and that peer is not on the
main chain. Other peers can then start asking for that data
again and again, but never get it as only that forked peer does.

And various other fixes
2017-08-21 21:57:19 +01:00
moneromooo-monero
ef005f5e72
p2p: add a couple early outs when the stop signal is received
This avoids quicker exit
2017-08-16 15:44:52 +01:00
Riccardo Spagni
4bfb58328d
Merge pull request #2282
7fdc178a p2p: fix random peer index being too large (moneromooo-monero)
2017-08-15 20:54:38 +02:00
Riccardo Spagni
f980b2ca89
Merge pull request #2277
6ce769c1 p2p: get net log spam down a bit (moneromooo-monero)
2017-08-15 20:53:27 +02:00
Riccardo Spagni
74522c7e84
Merge pull request #2236
cb2d5110 Tweak net logs so we get more info on why networking can't start (moneromooo-monero)
2017-08-15 20:52:44 +02:00
moneromooo-monero
cb2d5110ff
Tweak net logs so we get more info on why networking can't start
This should prevent "silent" failures to start
2017-08-15 19:49:25 +01:00
moneromooo-monero
7fdc178abb
p2p: fix random peer index being too large 2017-08-11 14:29:55 +01:00
moneromooo-monero
6ce769c123
p2p: get net log spam down a bit 2017-08-10 14:30:42 +01:00
moneromooo-monero
7591c528d0
p2p: fallback on seed nodes if we can't make a connection
This avoids failing to connect to the network in case all
known peers are unavailable (which can happen if the peer
list is small).
2017-08-09 22:55:25 +01:00
moneromooo-monero
e49f6d439d
net_node: fix m_in_timedsync initialization
This fixes nodes not being able to connect to nodes which use
recent code. While there, init peer_id too.
2017-08-08 17:23:02 +01:00
Riccardo Spagni
6db8a60a18
Merge pull request #2149
158c3ecf core: thread most of handle_incoming_tx (moneromooo-monero)
f57ee382 cryptonote_protocol: retry stale spans early (moneromooo-monero)
90df52e1 cryptonote_protocol: light cleanup (moneromooo-monero)
84e23156 cryptonote_protocol: avoid spurious SYNCHRONIZED OK messages (moneromooo-monero)
5be43fcd cryptonote_protocol_handler: sync speedup (moneromooo-monero)
2017-08-07 15:24:58 +02:00
Riccardo Spagni
ea46a5527a
Merge pull request #2234
214fd81e some include cleanup (moneromooo-monero)
2017-08-07 15:13:07 +02:00
Riccardo Spagni
9b0daf49db
Merge pull request #2220
c6ba7d11 p2p: move m_in_timedsync from connection_context to p2p_connection_context (moneromooo-monero)
2017-08-07 15:11:37 +02:00
Riccardo Spagni
43c6e452fa
Merge pull request #2219
04ebfbfe p2p: close connections when exiting (moneromooo-monero)
9a10148c p2p: fix thread leak (moneromooo-monero)
2017-08-07 15:11:20 +02:00
Riccardo Spagni
a6ea26e7fa
Merge pull request #2215
06aea2cf move get_proof_of_trust_hash from util.h to p2p_protocol_defs.h (moneromooo-monero)
2017-08-07 15:10:42 +02:00
moneromooo-monero
5be43fcdba
cryptonote_protocol_handler: sync speedup
A block queue is now placed between block download and
block processing. Blocks are now requested only from one
peer (unless starved).

Includes a new sync_info coommand.
2017-08-07 09:33:04 +01:00
moneromooo-monero
41f935ddb2
network_throttle: remove unneeded heap allocations
This will keep leak traces less noisy, as those were one off
allocations that were technically leaking.
2017-08-01 18:47:05 +01:00
moneromooo-monero
c6ba7d110f
p2p: move m_in_timedsync from connection_context to p2p_connection_context
It's got no place in the base class as it's P2P specific field
2017-08-01 18:41:57 +01:00
moneromooo-monero
214fd81e93
some include cleanup 2017-07-31 16:36:52 +01:00
moneromooo-monero
04ebfbfefa
p2p: close connections when exiting
This ensures they don't leak if they were in the middle of an
async operation.
2017-07-29 10:04:36 +01:00
moneromooo-monero
9a10148c01
p2p: fix thread leak 2017-07-28 22:23:05 +01:00
moneromooo-monero
06aea2cf0a
move get_proof_of_trust_hash from util.h to p2p_protocol_defs.h
This avoids having to include p2p_protocol_defs.h in util.h,
as util.h is used a lot, and p2p_protocol_defs.h includes
a lot of other things that most users don't need.
2017-07-27 15:46:47 +01:00
moneromooo-monero
8f96cfc20a
Remove typeid use in network_address
Since I had to add an ID to the derived classes anyway,
this can be used instead. This removes an apparently
pointless warning from CLANG too.
2017-06-28 09:11:24 +01:00
Riccardo Spagni
f31b89012d
Merge pull request #2073
07c4276c Don't issue a new timedsync while one is already in progress (Howard Chu)
cf3a376c Don't timeout a slow operation that's making progress (Howard Chu)
340830de Fix PR#2039 (Howard Chu)
2017-06-24 12:41:09 +02:00
Howard Chu
07c4276cbe
Don't issue a new timedsync while one is already in progress
A timedsync is issued every minute on a connection, but the input
tineout is 2 minutes. This means a new sync request could be issued
while a slow sync request was already in progress. The additional
request will further clog the network on a slow connection, and
cause a premature timeout.
2017-06-15 16:54:03 +01:00
moneromooo-monero
072102cfd2
abstracted nework addresses
All code which was using ip and port now uses a new IPv4 object,
subclass of a new network_address class. This will allow easy
addition of I2P addresses later (and also IPv6, etc).
Both old style and new style peer lists are now sent in the P2P
protocol, which is inefficient but allows peers using both
codebases to talk to each other. This will be removed in the
future. No other subclasses than IPv4 exist yet.
2017-05-27 11:35:54 +01:00
Riccardo Spagni
ed09652a17
Merge pull request #1701
8277e67f Add anchor connections (Miguel Herranz)
2017-05-05 11:26:11 +02:00
moneromooo-monero
c1c9eeaaf7
p2p: use the fallback seed IPs when not enough seeds are found
In case the DNS seed(s) is/are down, which would otherwise
cause the fallback seeds to never be used. Also if the seeds
resolve to too few IPs.
2017-03-18 11:40:28 +00:00
Miguel Herranz
1a7e18bfdf Make gray peer selection uniform
Prevents the system from always picking the gray peers with the most
recent last_seen.
2017-02-28 17:39:39 +01:00
Miguel Herranz
f3be9991d7 Make get_random_gray_peer distribution uniform
get_random_gray_peer is used to implement feeler connections, described
in: https://eprint.iacr.org/2015/263.pdf 2. Random selection
2017-02-27 18:29:50 +01:00
Riccardo Spagni
72deb4846d
updated fallback nodes 2017-02-21 22:40:26 +02:00
Riccardo Spagni
c3599fa7b9
update copyright year, fix occasional lack of newline at line end 2017-02-21 19:38:18 +02:00
moneromooo-monero
e74b3ab5f7
core: add p2p bind port options from net_node
They're now used by core to determine the data directory to use
for the txpool directory.

This fixes an assert in the core tests, which don't use the RPC
server, which normally initializes the P2P code.
2017-02-21 09:35:23 +00:00
moneromooo-monero
d43fde8a9b
network_throttle: demote spammy logs to TRACE 2017-02-13 16:54:45 +00:00
moneromooo-monero
8ec2a8d2b0
net_node: fix spurious warning about using uninitialized data
This is only used to load, not save
2017-02-12 14:06:36 +00:00
Miguel Herranz
8277e67f11 Add anchor connections
Based on https://eprint.iacr.org/2015/263.pdf 4. Anchor connections.

Peer list serialisation version bumped to 5.
2017-02-10 23:28:54 +01:00
kenshi84
8027ce0c75 extract some basic code from libcryptonote_core into libcryptonote_basic 2017-02-08 22:45:15 +09:00
Riccardo Spagni
fcb299b4ae
Merge pull request #1641
ca94d0a4 Separate data per P2P port (Miguel Herranz)
2017-02-02 22:41:28 +02:00
Riccardo Spagni
f9e60dcd55
Merge pull request #1617
0644eed7 Remove boost/foreach.cpp includes (Miguel Herranz)
36dd3e23 Replace BOOST_REVERSE_FOREACH with ranged for (Miguel Herranz)
629e3101 Replace BOOST_FOREACH with C++11 ranged for (Miguel Herranz)
2017-02-02 18:16:39 +02:00
Miguel Herranz
ca94d0a43c Separate data per P2P port
poolstate.bin and p2pstate.bin are stored in .bitmonero/ if the default
P2P port is being used.

If another port is used both files are stored in
.bitmonero/PORTNUMBER/.
2017-01-28 14:16:06 +01:00
Miguel Herranz
8141973e00 Remove unreachable returns
CATCH_ENTRY_L0 already returns the second value.
2017-01-23 11:29:34 +01:00
Miguel Herranz
0644eed772 Remove boost/foreach.cpp includes 2017-01-22 23:31:34 +01:00
Miguel Herranz
36dd3e238f Replace BOOST_REVERSE_FOREACH with ranged for 2017-01-22 21:47:39 +01:00
Miguel Herranz
629e3101ab Replace BOOST_FOREACH with C++11 ranged for 2017-01-22 21:38:10 +01:00
Riccardo Spagni
add98edfc3
Merge pull request #1609
4cdf0a35 p2p: always recreate a new peer id on startup (moneromooo-monero)
2017-01-22 11:47:43 -05:00
Riccardo Spagni
f798a2ab85
Merge pull request #1606
f8b97aef p2p: show ban/unban logs by default again (moneromooo-monero)
2017-01-22 11:43:11 -05:00
moneromooo-monero
4cdf0a35c9
p2p: always recreate a new peer id on startup
This prevents easy fingerprinting when you change IPs, and
will be a must when kovri gets used.
2017-01-22 11:37:55 +00:00
moneromooo-monero
f8b97aef34
p2p: show ban/unban logs by default again 2017-01-21 21:19:21 +00:00
Miguel Herranz
1c4d65c011 Rename method to get_random_gray_peer 2017-01-21 13:04:49 +01:00
Miguel Herranz
03a54ee0c9 Fix logging that broke after rebasing 2017-01-21 11:22:04 +01:00
Miguel Herranz
6bdd3a59b5 Use set_peer_just_seen to keep last_seen updated 2017-01-21 10:11:32 +01:00
Miguel Herranz
82dbeedd1b Add gray peer list housekeeping system
A random peer from the gray peer list is selected and a connection is
made to check if the peer is alive.

If the connection and handshake are successful the peer is promoted to
the white peer list, in case of failure the peer is evicted from the
gray peer list.

The connection is closed after the check in either case.
2017-01-21 10:09:38 +01:00
Riccardo Spagni
3db3a6ee1a
Merge pull request #1593
cbcdf8ad Honor depth in get_peerlist_head method (Miguel Herranz)
2017-01-20 20:59:09 -05:00
Riccardo Spagni
d10425025a
Merge pull request #1572
0e0e6c5f Reduce to one connection per IP (Miguel Herranz)
3f269e98 Limit incoming connections from the same IP (Miguel Herranz)
2017-01-20 20:54:04 -05:00
Miguel Herranz
cbcdf8ad35 Honor depth in get_peerlist_head method
The method returned depth + 2 because:

- push_back was executed before the condition.
- > instead of >= causing one more iteration.
2017-01-18 21:41:52 +01:00
Miguel Herranz
0e0e6c5f39 Reduce to one connection per IP 2017-01-16 18:16:32 +01:00
moneromooo-monero
5833d66f65
Change logging to easylogging++
This replaces the epee and data_loggers logging systems with
a single one, and also adds filename:line and explicit severity
levels. Categories may be defined, and logging severity set
by category (or set of categories). epee style 0-4 log level
maps to a sensible severity configuration. Log files now also
rotate when reaching 100 MB.

To select which logs to output, use the MONERO_LOGS environment
variable, with a comma separated list of categories (globs are
supported), with their requested severity level after a colon.
If a log matches more than one such setting, the last one in
the configuration string applies. A few examples:

This one is (mostly) silent, only outputting fatal errors:

MONERO_LOGS=*:FATAL

This one is very verbose:

MONERO_LOGS=*:TRACE

This one is totally silent (logwise):

MONERO_LOGS=""

This one outputs all errors and warnings, except for the
"verify" category, which prints just fatal errors (the verify
category is used for logs about incoming transactions and
blocks, and it is expected that some/many will fail to verify,
hence we don't want the spam):

MONERO_LOGS=*:WARNING,verify:FATAL

Log levels are, in decreasing order of priority:
FATAL, ERROR, WARNING, INFO, DEBUG, TRACE

Subcategories may be added using prefixes and globs. This
example will output net.p2p logs at the TRACE level, but all
other net* logs only at INFO:

MONERO_LOGS=*:ERROR,net*:INFO,net.p2p:TRACE

Logs which are intended for the user (which Monero was using
a lot through epee, but really isn't a nice way to go things)
should use the "global" category. There are a few helper macros
for using this category, eg: MGINFO("this shows up by default")
or MGINFO_RED("this is red"), to try to keep a similar look
and feel for now.

Existing epee log macros still exist, and map to the new log
levels, but since they're used as a "user facing" UI element
as much as a logging system, they often don't map well to log
severities (ie, a log level 0 log may be an error, or may be
something we want the user to see, such as an important info).
In those cases, I tried to use the new macros. In other cases,
I left the existing macros in. When modifying logs, it is
probably best to switch to the new macros with explicit levels.

The --log-level options and set_log commands now also accept
category settings, in addition to the epee style log levels.
2017-01-16 00:25:46 +00:00
Miguel Herranz
3f269e988c Limit incoming connections from the same IP 2017-01-15 12:11:27 +01:00
Chris Vickio
fcf66925c1 remove unused fields from network_throttle (unused-private-field warning) 2017-01-14 15:06:07 +03:00
kenshi84
2ac8007544 also use portable serializer for boost_serialization_helper.h and net_node.inl, completely adandon boost/archive/binary_oarchive.hpp 2016-12-20 13:04:19 +09:00
Riccardo Spagni
f2ea2afb77
Merge pull request #1398
f4772bae Fix a few minor typos (Pierre Boyer)
2016-12-04 22:28:22 +02:00
Riccardo Spagni
8086379680
Merge pull request #1397
3f7d6fb5 Fix delayed exit when syncing (moneromooo-monero)
2016-12-04 22:27:41 +02:00
Riccardo Spagni
4a0be41dfe
Merge pull request #1396
7c0dd5e4 net_node: drop connections from banned IPs after looping through connections (moneromooo-monero)
2016-12-04 22:26:12 +02:00
Pierre Boyer
f4772bae81 Fix a few minor typos 2016-12-04 14:13:54 +01:00
moneromooo-monero
3f7d6fb57d
Fix delayed exit when syncing 2016-12-04 12:27:45 +00:00
moneromooo-monero
7c0dd5e46c
net_node: drop connections from banned IPs after looping through connections
This keeps the connections lock just for the time of looping
and adding connectoins to a list, and the dropping happens
after it. This should avoid lengthy delays waiting for the
connections lock.
2016-12-03 11:20:48 +00:00
moneromooo-monero
4adde0423b
p2p: possibly fix crash in relay_blocks 2016-12-01 23:52:16 +00:00
moneromooo-monero
17b6bd6d35
Fix DNS failures in offline mode preventing daemon startup 2016-11-23 23:14:49 +00:00
Dion Ahmetaj
d61bd8187e add lightweight block propagation ("fluffy blocks")
Added a new command to the P2P protocol definitions to allow querying for support flags.

Implemented handling of new support flags command in net_node. Changed for_each callback template to include support flags. Updated print_connections command to show peer support flags.

Added p2p constant for signaling fluffy block support.

Added get_pool_transaction function to cryptnote_core.

Added new commands to cryptonote protocol for relaying fluffy blocks.

Implemented handling of fluffy block command in cryptonote protocol.

Enabled fluffy block support in node initial configuration.

Implemented get_testnet function in cryptonote_core.

Made it so that fluffy blocks only run on testnet.
2016-11-09 14:24:27 -05:00