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-rw-r--r--src/main.cpp13
-rw-r--r--src/net.cpp18
-rw-r--r--src/net.h13
3 files changed, 27 insertions, 17 deletions
diff --git a/src/main.cpp b/src/main.cpp
index f53d20fbb4..98e1741954 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -4293,8 +4293,8 @@ bool SendMessages(CNode* pto, bool fSendTrickle)
// RPC ping request by user
pingSend = true;
}
- if (pto->nLastSend && GetTime() - pto->nLastSend > 30 * 60 && pto->vSendMsg.empty()) {
- // Ping automatically sent as a keepalive
+ if (pto->nPingNonceSent == 0 && pto->nPingUsecStart + PING_INTERVAL * 1000000 < GetTimeMicros()) {
+ // Ping automatically sent as a latency probe & keepalive.
pingSend = true;
}
if (pingSend) {
@@ -4302,15 +4302,14 @@ bool SendMessages(CNode* pto, bool fSendTrickle)
while (nonce == 0) {
RAND_bytes((unsigned char*)&nonce, sizeof(nonce));
}
- pto->nPingNonceSent = nonce;
pto->fPingQueued = false;
+ pto->nPingUsecStart = GetTimeMicros();
if (pto->nVersion > BIP0031_VERSION) {
- // Take timestamp as close as possible before transmitting ping
- pto->nPingUsecStart = GetTimeMicros();
+ pto->nPingNonceSent = nonce;
pto->PushMessage("ping", nonce);
} else {
- // Peer is too old to support ping command with nonce, pong will never arrive, disable timing
- pto->nPingUsecStart = 0;
+ // Peer is too old to support ping command with nonce, pong will never arrive.
+ pto->nPingNonceSent = 0;
pto->PushMessage("ping");
}
}
diff --git a/src/net.cpp b/src/net.cpp
index ac0da26de9..757a06aaed 100644
--- a/src/net.cpp
+++ b/src/net.cpp
@@ -1024,23 +1024,27 @@ void ThreadSocketHandler()
//
// Inactivity checking
//
- if (pnode->vSendMsg.empty())
- pnode->nLastSendEmpty = GetTime();
- if (GetTime() - pnode->nTimeConnected > 60)
+ int64_t nTime = GetTime();
+ if (nTime - pnode->nTimeConnected > 60)
{
if (pnode->nLastRecv == 0 || pnode->nLastSend == 0)
{
LogPrint("net", "socket no message in first 60 seconds, %d %d\n", pnode->nLastRecv != 0, pnode->nLastSend != 0);
pnode->fDisconnect = true;
}
- else if (GetTime() - pnode->nLastSend > 90*60 && GetTime() - pnode->nLastSendEmpty > 90*60)
+ else if (nTime - pnode->nLastSend > TIMEOUT_INTERVAL)
{
- LogPrintf("socket not sending\n");
+ LogPrintf("socket sending timeout: %is\n", nTime - pnode->nLastSend);
pnode->fDisconnect = true;
}
- else if (GetTime() - pnode->nLastRecv > 90*60)
+ else if (nTime - pnode->nLastRecv > (pnode->nVersion > BIP0031_VERSION ? TIMEOUT_INTERVAL : 90*60))
{
- LogPrintf("socket inactivity timeout\n");
+ LogPrintf("socket receive timeout: %is\n", nTime - pnode->nLastRecv);
+ pnode->fDisconnect = true;
+ }
+ else if (pnode->nPingNonceSent && pnode->nPingUsecStart + TIMEOUT_INTERVAL * 1000000 < GetTimeMicros())
+ {
+ LogPrintf("ping timeout: %fs\n", 0.000001 * (GetTimeMicros() - pnode->nPingUsecStart));
pnode->fDisconnect = true;
}
}
diff --git a/src/net.h b/src/net.h
index f1ac888f5b..14d578a72a 100644
--- a/src/net.h
+++ b/src/net.h
@@ -28,6 +28,7 @@
#include <boost/signals2/signal.hpp>
#include <openssl/rand.h>
+
class CAddrMan;
class CBlockIndex;
class CNode;
@@ -36,6 +37,10 @@ namespace boost {
class thread_group;
}
+/** Time between pings automatically sent out for latency probing and keepalive (in seconds). */
+static const int PING_INTERVAL = 2 * 60;
+/** Time after which to disconnect, after waiting for a ping response (or inactivity). */
+static const int TIMEOUT_INTERVAL = 20 * 60;
/** The maximum number of entries in an 'inv' protocol message */
static const unsigned int MAX_INV_SZ = 50000;
/** -listen default */
@@ -219,7 +224,6 @@ public:
int64_t nLastSend;
int64_t nLastRecv;
- int64_t nLastSendEmpty;
int64_t nTimeConnected;
CAddress addr;
std::string addrName;
@@ -275,10 +279,14 @@ public:
CCriticalSection cs_inventory;
std::multimap<int64_t, CInv> mapAskFor;
- // Ping time measurement
+ // Ping time measurement:
+ // The pong reply we're expecting, or 0 if no pong expected.
uint64_t nPingNonceSent;
+ // Time (in usec) the last ping was sent, or 0 if no ping was ever sent.
int64_t nPingUsecStart;
+ // Last measured round-trip time.
int64_t nPingUsecTime;
+ // Whether a ping is requested.
bool fPingQueued;
CNode(SOCKET hSocketIn, CAddress addrIn, std::string addrNameIn = "", bool fInboundIn=false) : ssSend(SER_NETWORK, INIT_PROTO_VERSION), setAddrKnown(5000)
@@ -290,7 +298,6 @@ public:
nLastRecv = 0;
nSendBytes = 0;
nRecvBytes = 0;
- nLastSendEmpty = GetTime();
nTimeConnected = GetTime();
addr = addrIn;
addrName = addrNameIn == "" ? addr.ToStringIPPort() : addrNameIn;