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authorWladimir J. van der Laan <laanwj@gmail.com>2016-03-30 09:31:32 +0200
committerWladimir J. van der Laan <laanwj@gmail.com>2016-03-30 09:31:51 +0200
commit352fd577291e2638452e121e5b96a9cb1c164465 (patch)
tree65ee2b030de92aa40f9642c9fc7f2726b90aadaf
parent5131005e5b26d12b5b3f79c1c3f8ee08172fc386 (diff)
parente1523cee5808bb792cd99f037f06b736af4e23fb (diff)
Merge #7573: P2P: add maxtimeadjustment command line option
e1523ce P2P: add maxtimeadjustment command line option (mruddy)
-rw-r--r--src/init.cpp2
-rw-r--r--src/timedata.cpp2
-rw-r--r--src/timedata.h2
3 files changed, 5 insertions, 1 deletions
diff --git a/src/init.cpp b/src/init.cpp
index 38ac91b2af..0fb7146128 100644
--- a/src/init.cpp
+++ b/src/init.cpp
@@ -27,6 +27,7 @@
#include "script/standard.h"
#include "script/sigcache.h"
#include "scheduler.h"
+#include "timedata.h"
#include "txdb.h"
#include "txmempool.h"
#include "torcontrol.h"
@@ -365,6 +366,7 @@ std::string HelpMessage(HelpMessageMode mode)
strUsage += HelpMessageOpt("-maxconnections=<n>", strprintf(_("Maintain at most <n> connections to peers (default: %u)"), DEFAULT_MAX_PEER_CONNECTIONS));
strUsage += HelpMessageOpt("-maxreceivebuffer=<n>", strprintf(_("Maximum per-connection receive buffer, <n>*1000 bytes (default: %u)"), DEFAULT_MAXRECEIVEBUFFER));
strUsage += HelpMessageOpt("-maxsendbuffer=<n>", strprintf(_("Maximum per-connection send buffer, <n>*1000 bytes (default: %u)"), DEFAULT_MAXSENDBUFFER));
+ strUsage += HelpMessageOpt("-maxtimeadjustment", strprintf(_("Maximum allowed median peer time offset adjustment. Local perspective of time may be influenced by peers forward or backward by this amount. (default: %u seconds)"), DEFAULT_MAX_TIME_ADJUSTMENT));
strUsage += HelpMessageOpt("-onion=<ip:port>", strprintf(_("Use separate SOCKS5 proxy to reach peers via Tor hidden services (default: %s)"), "-proxy"));
strUsage += HelpMessageOpt("-onlynet=<net>", _("Only connect to nodes in network <net> (ipv4, ipv6 or onion)"));
strUsage += HelpMessageOpt("-permitbaremultisig", strprintf(_("Relay non-P2SH multisig (default: %u)"), DEFAULT_PERMIT_BAREMULTISIG));
diff --git a/src/timedata.cpp b/src/timedata.cpp
index 4d2f8d1e3b..b6bcf86fbf 100644
--- a/src/timedata.cpp
+++ b/src/timedata.cpp
@@ -83,7 +83,7 @@ void AddTimeData(const CNetAddr& ip, int64_t nOffsetSample)
int64_t nMedian = vTimeOffsets.median();
std::vector<int64_t> vSorted = vTimeOffsets.sorted();
// Only let other nodes change our time by so much
- if (abs64(nMedian) < 70 * 60)
+ if (abs64(nMedian) <= std::max<int64_t>(0, GetArg("-maxtimeadjustment", DEFAULT_MAX_TIME_ADJUSTMENT)))
{
nTimeOffset = nMedian;
}
diff --git a/src/timedata.h b/src/timedata.h
index 2296baf11b..9f2499c85c 100644
--- a/src/timedata.h
+++ b/src/timedata.h
@@ -10,6 +10,8 @@
#include <stdint.h>
#include <vector>
+static const int64_t DEFAULT_MAX_TIME_ADJUSTMENT = 70 * 60;
+
class CNetAddr;
/**