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This introduces a fixed limit for the size of p2p messages, and enforces it
before download.
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Normally bitcoin core does not display any network originated strings without
sanitizing or hex encoding. This wasn't done for strcommand in many places.
This could be used to play havoc with a terminal displaying the logs,
especially with printtoconsole in use.
Thanks to Evil-Knievel for reporting this issue.
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No longer necessary since #5161 / 845c86d128fb97d55d125e63653def38729bd2ed.
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856e862 namespace: drop most boost namespaces and a few header cleanups (Cory Fields)
9b1ab86 namespace: drop boost::assign altogether here (Cory Fields)
a324199 namespace: remove boost namespace pollution (Cory Fields)
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Replace x=0 with .SetNull(),
x==0 with IsNull(), x!=0 with !IsNull().
Replace uses of uint256(0) with uint256().
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73caf47 Display time offset in the debug window's Peers tab (Pavel Janík)
26a6bae Add time offset to getpeerinfo output (Pavel Janík)
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Github-Pull: #5494
Rebased-From: 15de949bb9277e442302bdd8dee299a8d6deee60
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78253fc Remove references to X11 licence (Michael Ford)
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The comment has been around since 0.1, but NTP inside the client
isn't deemed necessary so remove the comment to avoid confusion.
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- I saw this on http://en.cppreference.com/w/cpp/language/try_catch and
thought it would be a good idea
- also unify used format to better be able to search for exception
uses in our codebase
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35e408f Regard connection failures as attempt for addrman (Wladimir J. van der Laan)
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This avoids connecting to them again too soon in ThreadOpenConnections.
Make an exception for connection failures to the proxy as these
shouldn't affect the status of specific nodes.
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- 256 byte is the maximum, as per
http://msdn.microsoft.com/en-us/library/windows/desktop/ms738527%28v=vs.85%29.aspx
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This is a simplified re-do of closed pull #3088.
This patch eliminates the privacy and reliability problematic use
of centralized web services for discovering the node's addresses
for advertisement.
The Bitcoin protocol already allows your peers to tell you what
IP they think you have, but this data isn't trustworthy since
they could lie. So the challenge is using it without creating a
DOS vector.
To accomplish this we adopt an approach similar to the one used
by P2Pool: If we're announcing and don't have a better address
discovered (e.g. via UPNP) or configured we just announce to
each peer the address that peer told us. Since peers could
already replace, forge, or drop our address messages this cannot
create a new vulnerability... but if even one of our peers is
giving us a good address we'll eventually make a useful
advertisement.
We also may randomly use the peer-provided address for the
daily rebroadcast even if we otherwise have a seemingly routable
address, just in case we've been misconfigured (e.g. by UPNP).
To avoid privacy problems, we only do these things if discovery
is enabled.
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Also add documentation to some methods.
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Many changes:
* Do not use 'getblocks', but 'getheaders', and use it to build a headers tree.
* Blocks are fetched in parallel from all available outbound peers, using a
limited moving window. When one peer stalls the movement of the window, it is
disconnected.
* No more orphan blocks. At all. We only ever request a block for which we have
verified the headers, and store it to disk immediately. This means that a
disk-fill attack would require PoW.
* Require protocol version 31800 for every peer (released in december 2010).
* No more syncnode (we sync from everyone we can, though limited to 1 during
initial *headers* sync).
* Introduce some extra named constants, comments and asserts.
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9406471 Write fee estimate and peers files only when initialized (Wladimir J. van der Laan)
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Fixes #4669.
Move the loading of addresses to StartNode() to make it more
self-contained.
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611116d header include cleanup (Philip Kaufmann)
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6050ab6 netbase: Make SOCKS5 negotiation interruptible (Wladimir J. van der Laan)
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Github-Pull: #4856
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- ensures alphabetical ordering for includes etc. in source file headers
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540ac45 Avoid returning many "inv" orphans (Jeff Garzik)
d4168c8 Limit CNode::mapAskFor (Wladimir J. van der Laan)
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Avoids that SOCKS5 negotiation will hold up the shutdown process.
- Sockets can stay in non-blocking mode, no need to switch it on/off
anymore
- Adds a timeout (20 seconds) on SOCK5 negotiation. This should be
enough for even Tor to get a connection to a hidden service, and
avoids blocking the opencon thread indefinitely on a hanging proxy.
Fixes #2954.
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Includes `core: remove unneeded c_str() / Qt: replace c_str() with Qt code`
by P. Kaufmann.
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Tighten resource constraints on CNode.
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bbda402 net: Remove MilliSleep from StopNode (Wladimir J. van der Laan)
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I don't understand why it would be there in the first place. This looks
like voodoo, not programming.
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reduces time to service requests improving performance
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the UTXO set"
This reverts commit da2ec100f3681176f60dec6dc675fc64147ade3a.
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Split up util.cpp/h into:
- string utilities (hex, base32, base64): no internal dependencies, no dependency on boost (apart from foreach)
- money utilities (parsesmoney, formatmoney)
- time utilities (gettime*, sleep, format date):
- and the rest (logging, argument parsing, config file parsing)
The latter is basically the environment and OS handling,
and is stripped of all utility functions, so we may want to
rename it to something else than util.cpp/h for clarity (Matt suggested
osinterface).
Breaks dependency of sha256.cpp on all the things pulled in by util.
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da2ec10 Add a getutxos command to the p2p protocol. It allows querying of the UTXO set given a set of outpoints. (Mike Hearn)
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aa82795 Add detailed network info to getnetworkinfo RPC (Wladimir J. van der Laan)
075cf49 Add GetNetworkName function (Wladimir J. van der Laan)
c91a947 Add IsReachable(net) function (Wladimir J. van der Laan)
60dc8e4 Allow -onlynet=onion to be used (Wladimir J. van der Laan)
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Fixes #4679.
This leaves us with only one candidate, checkip.dyndns.org.
GetMyExternalIP should be phased out as soon as possible.
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given a set of outpoints.
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Allows other parts of the program to query for reachable
status of a network. Similar to IsLimited(net).
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The goal is to increase independence and privacy.
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eaedb59 net: add SetSocketNonBlocking() as OS independent wrapper (Philip Kaufmann)
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