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Merge #7212: Adds unittests for CAddrMan and CAddrinfo, removes source of non-determinism.

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40c87b6 Increase test coverage for addrman and addrinfo (Ethan Heilman)
This commit is contained in:
Wladimir J. van der Laan 2016-01-28 13:13:30 +01:00
commit 326ffed09b
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GPG key ID: 74810B012346C9A6
3 changed files with 391 additions and 49 deletions
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24
src/addrman.cpp
View file

@ -221,7 +221,7 @@ void CAddrMan::Good_(const CService& addr, int64_t nTime)
return; return;
// find a bucket it is in now // find a bucket it is in now
int nRnd = GetRandInt(ADDRMAN_NEW_BUCKET_COUNT); int nRnd = RandomInt(ADDRMAN_NEW_BUCKET_COUNT);
int nUBucket = -1; int nUBucket = -1;
for (unsigned int n = 0; n < ADDRMAN_NEW_BUCKET_COUNT; n++) { for (unsigned int n = 0; n < ADDRMAN_NEW_BUCKET_COUNT; n++) {
int nB = (n + nRnd) % ADDRMAN_NEW_BUCKET_COUNT; int nB = (n + nRnd) % ADDRMAN_NEW_BUCKET_COUNT;
@ -278,7 +278,7 @@ bool CAddrMan::Add_(const CAddress& addr, const CNetAddr& source, int64_t nTimeP
int nFactor = 1; int nFactor = 1;
for (int n = 0; n < pinfo->nRefCount; n++) for (int n = 0; n < pinfo->nRefCount; n++)
nFactor *= 2; nFactor *= 2;
if (nFactor > 1 && (GetRandInt(nFactor) != 0)) if (nFactor > 1 && (RandomInt(nFactor) != 0))
return false; return false;
} else { } else {
pinfo = Create(addr, source, &nId); pinfo = Create(addr, source, &nId);
@ -340,12 +340,12 @@ CAddrInfo CAddrMan::Select_(bool newOnly)
// Use a 50% chance for choosing between tried and new table entries. // Use a 50% chance for choosing between tried and new table entries.
if (!newOnly && if (!newOnly &&
(nTried > 0 && (nNew == 0 || GetRandInt(2) == 0))) { (nTried > 0 && (nNew == 0 || RandomInt(2) == 0))) {
// use a tried node // use a tried node
double fChanceFactor = 1.0; double fChanceFactor = 1.0;
while (1) { while (1) {
int nKBucket = GetRandInt(ADDRMAN_TRIED_BUCKET_COUNT); int nKBucket = RandomInt(ADDRMAN_TRIED_BUCKET_COUNT);
int nKBucketPos = GetRandInt(ADDRMAN_BUCKET_SIZE); int nKBucketPos = RandomInt(ADDRMAN_BUCKET_SIZE);
while (vvTried[nKBucket][nKBucketPos] == -1) { while (vvTried[nKBucket][nKBucketPos] == -1) {
nKBucket = (nKBucket + insecure_rand()) % ADDRMAN_TRIED_BUCKET_COUNT; nKBucket = (nKBucket + insecure_rand()) % ADDRMAN_TRIED_BUCKET_COUNT;
nKBucketPos = (nKBucketPos + insecure_rand()) % ADDRMAN_BUCKET_SIZE; nKBucketPos = (nKBucketPos + insecure_rand()) % ADDRMAN_BUCKET_SIZE;
@ -353,7 +353,7 @@ CAddrInfo CAddrMan::Select_(bool newOnly)
int nId = vvTried[nKBucket][nKBucketPos]; int nId = vvTried[nKBucket][nKBucketPos];
assert(mapInfo.count(nId) == 1); assert(mapInfo.count(nId) == 1);
CAddrInfo& info = mapInfo[nId]; CAddrInfo& info = mapInfo[nId];
if (GetRandInt(1 << 30) < fChanceFactor * info.GetChance() * (1 << 30)) if (RandomInt(1 << 30) < fChanceFactor * info.GetChance() * (1 << 30))
return info; return info;
fChanceFactor *= 1.2; fChanceFactor *= 1.2;
} }
@ -361,8 +361,8 @@ CAddrInfo CAddrMan::Select_(bool newOnly)
// use a new node // use a new node
double fChanceFactor = 1.0; double fChanceFactor = 1.0;
while (1) { while (1) {
int nUBucket = GetRandInt(ADDRMAN_NEW_BUCKET_COUNT); int nUBucket = RandomInt(ADDRMAN_NEW_BUCKET_COUNT);
int nUBucketPos = GetRandInt(ADDRMAN_BUCKET_SIZE); int nUBucketPos = RandomInt(ADDRMAN_BUCKET_SIZE);
while (vvNew[nUBucket][nUBucketPos] == -1) { while (vvNew[nUBucket][nUBucketPos] == -1) {
nUBucket = (nUBucket + insecure_rand()) % ADDRMAN_NEW_BUCKET_COUNT; nUBucket = (nUBucket + insecure_rand()) % ADDRMAN_NEW_BUCKET_COUNT;
nUBucketPos = (nUBucketPos + insecure_rand()) % ADDRMAN_BUCKET_SIZE; nUBucketPos = (nUBucketPos + insecure_rand()) % ADDRMAN_BUCKET_SIZE;
@ -370,7 +370,7 @@ CAddrInfo CAddrMan::Select_(bool newOnly)
int nId = vvNew[nUBucket][nUBucketPos]; int nId = vvNew[nUBucket][nUBucketPos];
assert(mapInfo.count(nId) == 1); assert(mapInfo.count(nId) == 1);
CAddrInfo& info = mapInfo[nId]; CAddrInfo& info = mapInfo[nId];
if (GetRandInt(1 << 30) < fChanceFactor * info.GetChance() * (1 << 30)) if (RandomInt(1 << 30) < fChanceFactor * info.GetChance() * (1 << 30))
return info; return info;
fChanceFactor *= 1.2; fChanceFactor *= 1.2;
} }
@ -466,7 +466,7 @@ void CAddrMan::GetAddr_(std::vector<CAddress>& vAddr)
if (vAddr.size() >= nNodes) if (vAddr.size() >= nNodes)
break; break;
int nRndPos = GetRandInt(vRandom.size() - n) + n; int nRndPos = RandomInt(vRandom.size() - n) + n;
SwapRandom(n, nRndPos); SwapRandom(n, nRndPos);
assert(mapInfo.count(vRandom[n]) == 1); assert(mapInfo.count(vRandom[n]) == 1);
@ -495,3 +495,7 @@ void CAddrMan::Connected_(const CService& addr, int64_t nTime)
if (nTime - info.nTime > nUpdateInterval) if (nTime - info.nTime > nUpdateInterval)
info.nTime = nTime; info.nTime = nTime;
} }
int CAddrMan::RandomInt(int nMax){
return GetRandInt(nMax);
}

13
src/addrman.h
View file

@ -176,9 +176,6 @@ private:
//! critical section to protect the inner data structures //! critical section to protect the inner data structures
mutable CCriticalSection cs; mutable CCriticalSection cs;
//! secret key to randomize bucket select with
uint256 nKey;
//! last used nId //! last used nId
int nIdCount; int nIdCount;
@ -204,6 +201,8 @@ private:
int vvNew[ADDRMAN_NEW_BUCKET_COUNT][ADDRMAN_BUCKET_SIZE]; int vvNew[ADDRMAN_NEW_BUCKET_COUNT][ADDRMAN_BUCKET_SIZE];
protected: protected:
//! secret key to randomize bucket select with
uint256 nKey;
//! Find an entry. //! Find an entry.
CAddrInfo* Find(const CNetAddr& addr, int *pnId = NULL); CAddrInfo* Find(const CNetAddr& addr, int *pnId = NULL);
@ -236,6 +235,9 @@ protected:
//! Select an address to connect to, if newOnly is set to true, only the new table is selected from. //! Select an address to connect to, if newOnly is set to true, only the new table is selected from.
CAddrInfo Select_(bool newOnly); CAddrInfo Select_(bool newOnly);
//! Wraps GetRandInt to allow tests to override RandomInt and make it determinismistic.
virtual int RandomInt(int nMax);
#ifdef DEBUG_ADDRMAN #ifdef DEBUG_ADDRMAN
//! Perform consistency check. Returns an error code or zero. //! Perform consistency check. Returns an error code or zero.
int Check_(); int Check_();
@ -571,11 +573,6 @@ public:
} }
} }
//! Ensure that bucket placement is always the same for testing purposes.
void MakeDeterministic(){
nKey.SetNull(); //Do not use outside of tests.
}
}; };
#endif // BITCOIN_ADDRMAN_H #endif // BITCOIN_ADDRMAN_H

399
src/test/addrman_tests.cpp
View file

@ -6,11 +6,49 @@
#include <string> #include <string>
#include <boost/test/unit_test.hpp> #include <boost/test/unit_test.hpp>
#include "hash.h"
#include "random.h" #include "random.h"
using namespace std; using namespace std;
class CAddrManTest : public CAddrMan{}; class CAddrManTest : public CAddrMan
{
uint64_t state;
public:
CAddrManTest()
{
state = 1;
}
//! Ensure that bucket placement is always the same for testing purposes.
void MakeDeterministic()
{
nKey.SetNull();
seed_insecure_rand(true);
}
int RandomInt(int nMax)
{
state = (CHashWriter(SER_GETHASH, 0) << state).GetHash().GetCheapHash();
return (unsigned int)(state % nMax);
}
CAddrInfo* Find(const CNetAddr& addr, int* pnId = NULL)
{
return CAddrMan::Find(addr, pnId);
}
CAddrInfo* Create(const CAddress& addr, const CNetAddr& addrSource, int* pnId = NULL)
{
return CAddrMan::Create(addr, addrSource, pnId);
}
void Delete(int nId)
{
CAddrMan::Delete(nId);
}
};
BOOST_FIXTURE_TEST_SUITE(addrman_tests, BasicTestingSetup) BOOST_FIXTURE_TEST_SUITE(addrman_tests, BasicTestingSetup)
@ -21,7 +59,7 @@ BOOST_AUTO_TEST_CASE(addrman_simple)
// Set addrman addr placement to be deterministic. // Set addrman addr placement to be deterministic.
addrman.MakeDeterministic(); addrman.MakeDeterministic();
CNetAddr source = CNetAddr("252.2.2.2:8333"); CNetAddr source = CNetAddr("252.2.2.2");
// Test 1: Does Addrman respond correctly when empty. // Test 1: Does Addrman respond correctly when empty.
BOOST_CHECK(addrman.size() == 0); BOOST_CHECK(addrman.size() == 0);
@ -29,7 +67,7 @@ BOOST_AUTO_TEST_CASE(addrman_simple)
BOOST_CHECK(addr_null.ToString() == "[::]:0"); BOOST_CHECK(addr_null.ToString() == "[::]:0");
// Test 2: Does Addrman::Add work as expected. // Test 2: Does Addrman::Add work as expected.
CService addr1 = CService("250.1.1.1:8333"); CService addr1 = CService("250.1.1.1", 8333);
addrman.Add(CAddress(addr1), source); addrman.Add(CAddress(addr1), source);
BOOST_CHECK(addrman.size() == 1); BOOST_CHECK(addrman.size() == 1);
CAddrInfo addr_ret1 = addrman.Select(); CAddrInfo addr_ret1 = addrman.Select();
@ -37,14 +75,14 @@ BOOST_AUTO_TEST_CASE(addrman_simple)
// Test 3: Does IP address deduplication work correctly. // Test 3: Does IP address deduplication work correctly.
// Expected dup IP should not be added. // Expected dup IP should not be added.
CService addr1_dup = CService("250.1.1.1:8333"); CService addr1_dup = CService("250.1.1.1", 8333);
addrman.Add(CAddress(addr1_dup), source); addrman.Add(CAddress(addr1_dup), source);
BOOST_CHECK(addrman.size() == 1); BOOST_CHECK(addrman.size() == 1);
// Test 5: New table has one addr and we add a diff addr we should // Test 5: New table has one addr and we add a diff addr we should
// have two addrs. // have two addrs.
CService addr2 = CService("250.1.1.2:8333"); CService addr2 = CService("250.1.1.2", 8333);
addrman.Add(CAddress(addr2), source); addrman.Add(CAddress(addr2), source);
BOOST_CHECK(addrman.size() == 2); BOOST_CHECK(addrman.size() == 2);
@ -62,16 +100,16 @@ BOOST_AUTO_TEST_CASE(addrman_ports)
// Set addrman addr placement to be deterministic. // Set addrman addr placement to be deterministic.
addrman.MakeDeterministic(); addrman.MakeDeterministic();
CNetAddr source = CNetAddr("252.2.2.2:8333"); CNetAddr source = CNetAddr("252.2.2.2");
BOOST_CHECK(addrman.size() == 0); BOOST_CHECK(addrman.size() == 0);
// Test 7; Addr with same IP but diff port does not replace existing addr. // Test 7; Addr with same IP but diff port does not replace existing addr.
CService addr1 = CService("250.1.1.1:8333"); CService addr1 = CService("250.1.1.1", 8333);
addrman.Add(CAddress(addr1), source); addrman.Add(CAddress(addr1), source);
BOOST_CHECK(addrman.size() == 1); BOOST_CHECK(addrman.size() == 1);
CService addr1_port = CService("250.1.1.1:8334"); CService addr1_port = CService("250.1.1.1", 8334);
addrman.Add(CAddress(addr1_port), source); addrman.Add(CAddress(addr1_port), source);
BOOST_CHECK(addrman.size() == 1); BOOST_CHECK(addrman.size() == 1);
CAddrInfo addr_ret2 = addrman.Select(); CAddrInfo addr_ret2 = addrman.Select();
@ -94,10 +132,10 @@ BOOST_AUTO_TEST_CASE(addrman_select)
// Set addrman addr placement to be deterministic. // Set addrman addr placement to be deterministic.
addrman.MakeDeterministic(); addrman.MakeDeterministic();
CNetAddr source = CNetAddr("252.2.2.2:8333"); CNetAddr source = CNetAddr("252.2.2.2");
// Test 9: Select from new with 1 addr in new. // Test 9: Select from new with 1 addr in new.
CService addr1 = CService("250.1.1.1:8333"); CService addr1 = CService("250.1.1.1", 8333);
addrman.Add(CAddress(addr1), source); addrman.Add(CAddress(addr1), source);
BOOST_CHECK(addrman.size() == 1); BOOST_CHECK(addrman.size() == 1);
@ -105,7 +143,6 @@ BOOST_AUTO_TEST_CASE(addrman_select)
CAddrInfo addr_ret1 = addrman.Select(newOnly); CAddrInfo addr_ret1 = addrman.Select(newOnly);
BOOST_CHECK(addr_ret1.ToString() == "250.1.1.1:8333"); BOOST_CHECK(addr_ret1.ToString() == "250.1.1.1:8333");
// Test 10: move addr to tried, select from new expected nothing returned. // Test 10: move addr to tried, select from new expected nothing returned.
addrman.Good(CAddress(addr1)); addrman.Good(CAddress(addr1));
BOOST_CHECK(addrman.size() == 1); BOOST_CHECK(addrman.size() == 1);
@ -114,6 +151,39 @@ BOOST_AUTO_TEST_CASE(addrman_select)
CAddrInfo addr_ret3 = addrman.Select(); CAddrInfo addr_ret3 = addrman.Select();
BOOST_CHECK(addr_ret3.ToString() == "250.1.1.1:8333"); BOOST_CHECK(addr_ret3.ToString() == "250.1.1.1:8333");
BOOST_CHECK(addrman.size() == 1);
// Add three addresses to new table.
CService addr2 = CService("250.3.1.1", 8333);
CService addr3 = CService("250.3.2.2", 9999);
CService addr4 = CService("250.3.3.3", 9999);
addrman.Add(CAddress(addr2), CService("250.3.1.1", 8333));
addrman.Add(CAddress(addr3), CService("250.3.1.1", 8333));
addrman.Add(CAddress(addr4), CService("250.4.1.1", 8333));
// Add three addresses to tried table.
CService addr5 = CService("250.4.4.4", 8333);
CService addr6 = CService("250.4.5.5", 7777);
CService addr7 = CService("250.4.6.6", 8333);
addrman.Add(CAddress(addr5), CService("250.3.1.1", 8333));
addrman.Good(CAddress(addr5));
addrman.Add(CAddress(addr6), CService("250.3.1.1", 8333));
addrman.Good(CAddress(addr6));
addrman.Add(CAddress(addr7), CService("250.1.1.3", 8333));
addrman.Good(CAddress(addr7));
// Test 11: 6 addrs + 1 addr from last test = 7.
BOOST_CHECK(addrman.size() == 7);
// Test 12: Select pulls from new and tried regardless of port number.
BOOST_CHECK(addrman.Select().ToString() == "250.4.6.6:8333");
BOOST_CHECK(addrman.Select().ToString() == "250.3.2.2:9999");
BOOST_CHECK(addrman.Select().ToString() == "250.3.3.3:9999");
BOOST_CHECK(addrman.Select().ToString() == "250.4.4.4:8333");
} }
BOOST_AUTO_TEST_CASE(addrman_new_collisions) BOOST_AUTO_TEST_CASE(addrman_new_collisions)
@ -123,26 +193,26 @@ BOOST_AUTO_TEST_CASE(addrman_new_collisions)
// Set addrman addr placement to be deterministic. // Set addrman addr placement to be deterministic.
addrman.MakeDeterministic(); addrman.MakeDeterministic();
CNetAddr source = CNetAddr("252.2.2.2:8333"); CNetAddr source = CNetAddr("252.2.2.2");
BOOST_CHECK(addrman.size() == 0); BOOST_CHECK(addrman.size() == 0);
for (unsigned int i = 1; i < 4; i++){ for (unsigned int i = 1; i < 18; i++) {
CService addr = CService("250.1.1."+boost::to_string(i)); CService addr = CService("250.1.1." + boost::to_string(i));
addrman.Add(CAddress(addr), source); addrman.Add(CAddress(addr), source);
//Test 11: No collision in new table yet. //Test 13: No collision in new table yet.
BOOST_CHECK(addrman.size() == i); BOOST_CHECK(addrman.size() == i);
} }
//Test 12: new table collision! //Test 14: new table collision!
CService addr1 = CService("250.1.1.4"); CService addr1 = CService("250.1.1.18");
addrman.Add(CAddress(addr1), source); addrman.Add(CAddress(addr1), source);
BOOST_CHECK(addrman.size() == 3); BOOST_CHECK(addrman.size() == 17);
CService addr2 = CService("250.1.1.5"); CService addr2 = CService("250.1.1.19");
addrman.Add(CAddress(addr2), source); addrman.Add(CAddress(addr2), source);
BOOST_CHECK(addrman.size() == 4); BOOST_CHECK(addrman.size() == 18);
} }
BOOST_AUTO_TEST_CASE(addrman_tried_collisions) BOOST_AUTO_TEST_CASE(addrman_tried_collisions)
@ -152,29 +222,300 @@ BOOST_AUTO_TEST_CASE(addrman_tried_collisions)
// Set addrman addr placement to be deterministic. // Set addrman addr placement to be deterministic.
addrman.MakeDeterministic(); addrman.MakeDeterministic();
CNetAddr source = CNetAddr("252.2.2.2:8333"); CNetAddr source = CNetAddr("252.2.2.2");
BOOST_CHECK(addrman.size() == 0); BOOST_CHECK(addrman.size() == 0);
for (unsigned int i = 1; i < 75; i++){ for (unsigned int i = 1; i < 80; i++) {
CService addr = CService("250.1.1."+boost::to_string(i)); CService addr = CService("250.1.1." + boost::to_string(i));
addrman.Add(CAddress(addr), source); addrman.Add(CAddress(addr), source);
addrman.Good(CAddress(addr)); addrman.Good(CAddress(addr));
//Test 13: No collision in tried table yet. //Test 15: No collision in tried table yet.
BOOST_TEST_MESSAGE(addrman.size()); BOOST_TEST_MESSAGE(addrman.size());
BOOST_CHECK(addrman.size() == i); BOOST_CHECK(addrman.size() == i);
} }
//Test 14: tried table collision! //Test 16: tried table collision!
CService addr1 = CService("250.1.1.76"); CService addr1 = CService("250.1.1.80");
addrman.Add(CAddress(addr1), source); addrman.Add(CAddress(addr1), source);
BOOST_CHECK(addrman.size() == 74); BOOST_CHECK(addrman.size() == 79);
CService addr2 = CService("250.1.1.77"); CService addr2 = CService("250.1.1.81");
addrman.Add(CAddress(addr2), source); addrman.Add(CAddress(addr2), source);
BOOST_CHECK(addrman.size() == 75); BOOST_CHECK(addrman.size() == 80);
}
BOOST_AUTO_TEST_CASE(addrman_find)
{
CAddrManTest addrman;
// Set addrman addr placement to be deterministic.
addrman.MakeDeterministic();
BOOST_CHECK(addrman.size() == 0);
CAddress addr1 = CAddress(CService("250.1.2.1", 8333));
CAddress addr2 = CAddress(CService("250.1.2.1", 9999));
CAddress addr3 = CAddress(CService("251.255.2.1", 8333));
CNetAddr source1 = CNetAddr("250.1.2.1");
CNetAddr source2 = CNetAddr("250.1.2.2");
addrman.Add(addr1, source1);
addrman.Add(addr2, source2);
addrman.Add(addr3, source1);
// Test 17: ensure Find returns an IP matching what we searched on.
CAddrInfo* info1 = addrman.Find(addr1);
BOOST_CHECK(info1);
if (info1)
BOOST_CHECK(info1->ToString() == "250.1.2.1:8333");
// Test 18; Find does not discriminate by port number.
CAddrInfo* info2 = addrman.Find(addr2);
BOOST_CHECK(info2);
if (info2)
BOOST_CHECK(info2->ToString() == info1->ToString());
// Test 19: Find returns another IP matching what we searched on.
CAddrInfo* info3 = addrman.Find(addr3);
BOOST_CHECK(info3);
if (info3)
BOOST_CHECK(info3->ToString() == "251.255.2.1:8333");
}
BOOST_AUTO_TEST_CASE(addrman_create)
{
CAddrManTest addrman;
// Set addrman addr placement to be deterministic.
addrman.MakeDeterministic();
BOOST_CHECK(addrman.size() == 0);
CAddress addr1 = CAddress(CService("250.1.2.1", 8333));
CNetAddr source1 = CNetAddr("250.1.2.1");
int nId;
CAddrInfo* pinfo = addrman.Create(addr1, source1, &nId);
// Test 20: The result should be the same as the input addr.
BOOST_CHECK(pinfo->ToString() == "250.1.2.1:8333");
CAddrInfo* info2 = addrman.Find(addr1);
BOOST_CHECK(info2->ToString() == "250.1.2.1:8333");
} }
BOOST_AUTO_TEST_CASE(addrman_delete)
{
CAddrManTest addrman;
// Set addrman addr placement to be deterministic.
addrman.MakeDeterministic();
BOOST_CHECK(addrman.size() == 0);
CAddress addr1 = CAddress(CService("250.1.2.1", 8333));
CNetAddr source1 = CNetAddr("250.1.2.1");
int nId;
addrman.Create(addr1, source1, &nId);
// Test 21: Delete should actually delete the addr.
BOOST_CHECK(addrman.size() == 1);
addrman.Delete(nId);
BOOST_CHECK(addrman.size() == 0);
CAddrInfo* info2 = addrman.Find(addr1);
BOOST_CHECK(info2 == NULL);
}
BOOST_AUTO_TEST_CASE(addrman_getaddr)
{
CAddrManTest addrman;
// Set addrman addr placement to be deterministic.
addrman.MakeDeterministic();
// Test 22: Sanity check, GetAddr should never return anything if addrman
// is empty.
BOOST_CHECK(addrman.size() == 0);
vector<CAddress> vAddr1 = addrman.GetAddr();
BOOST_CHECK(vAddr1.size() == 0);
CAddress addr1 = CAddress(CService("250.250.2.1", 8333));
addr1.nTime = GetAdjustedTime(); // Set time so isTerrible = false
CAddress addr2 = CAddress(CService("250.251.2.2", 9999));
addr2.nTime = GetAdjustedTime();
CAddress addr3 = CAddress(CService("251.252.2.3", 8333));
addr3.nTime = GetAdjustedTime();
CAddress addr4 = CAddress(CService("252.253.3.4", 8333));
addr4.nTime = GetAdjustedTime();
CAddress addr5 = CAddress(CService("252.254.4.5", 8333));
addr5.nTime = GetAdjustedTime();
CNetAddr source1 = CNetAddr("250.1.2.1");
CNetAddr source2 = CNetAddr("250.2.3.3");
// Test 23: Ensure GetAddr works with new addresses.
addrman.Add(addr1, source1);
addrman.Add(addr2, source2);
addrman.Add(addr3, source1);
addrman.Add(addr4, source2);
addrman.Add(addr5, source1);
// GetAddr returns 23% of addresses, 23% of 5 is 1 rounded down.
BOOST_CHECK(addrman.GetAddr().size() == 1);
// Test 24: Ensure GetAddr works with new and tried addresses.
addrman.Good(CAddress(addr1));
addrman.Good(CAddress(addr2));
BOOST_CHECK(addrman.GetAddr().size() == 1);
// Test 25: Ensure GetAddr still returns 23% when addrman has many addrs.
for (unsigned int i = 1; i < (8 * 256); i++) {
int octet1 = i % 256;
int octet2 = (i / 256) % 256;
int octet3 = (i / (256 * 2)) % 256;
string strAddr = boost::to_string(octet1) + "." + boost::to_string(octet2) + "." + boost::to_string(octet3) + ".23";
CAddress addr = CAddress(CService(strAddr));
// Ensure that for all addrs in addrman, isTerrible == false.
addr.nTime = GetAdjustedTime();
addrman.Add(addr, CNetAddr(strAddr));
if (i % 8 == 0)
addrman.Good(addr);
}
vector<CAddress> vAddr = addrman.GetAddr();
size_t percent23 = (addrman.size() * 23) / 100;
BOOST_CHECK(vAddr.size() == percent23);
BOOST_CHECK(vAddr.size() == 461);
// (Addrman.size() < number of addresses added) due to address collisons.
BOOST_CHECK(addrman.size() == 2007);
}
BOOST_AUTO_TEST_CASE(caddrinfo_get_tried_bucket)
{
CAddrManTest addrman;
// Set addrman addr placement to be deterministic.
addrman.MakeDeterministic();
CAddress addr1 = CAddress(CService("250.1.1.1", 8333));
CAddress addr2 = CAddress(CService("250.1.1.1", 9999));
CNetAddr source1 = CNetAddr("250.1.1.1");
CAddrInfo info1 = CAddrInfo(addr1, source1);
uint256 nKey1 = (uint256)(CHashWriter(SER_GETHASH, 0) << 1).GetHash();
uint256 nKey2 = (uint256)(CHashWriter(SER_GETHASH, 0) << 2).GetHash();
BOOST_CHECK(info1.GetTriedBucket(nKey1) == 40);
// Test 26: Make sure key actually randomizes bucket placement. A fail on
// this test could be a security issue.
BOOST_CHECK(info1.GetTriedBucket(nKey1) != info1.GetTriedBucket(nKey2));
// Test 27: Two addresses with same IP but different ports can map to
// different buckets because they have different keys.
CAddrInfo info2 = CAddrInfo(addr2, source1);
BOOST_CHECK(info1.GetKey() != info2.GetKey());
BOOST_CHECK(info1.GetTriedBucket(nKey1) != info2.GetTriedBucket(nKey1));
set<int> buckets;
for (int i = 0; i < 255; i++) {
CAddrInfo infoi = CAddrInfo(
CAddress(CService("250.1.1." + boost::to_string(i))),
CNetAddr("250.1.1." + boost::to_string(i)));
int bucket = infoi.GetTriedBucket(nKey1);
buckets.insert(bucket);
}
// Test 28: IP addresses in the same group (\16 prefix for IPv4) should
// never get more than 8 buckets
BOOST_CHECK(buckets.size() == 8);
buckets.clear();
for (int j = 0; j < 255; j++) {
CAddrInfo infoj = CAddrInfo(
CAddress(CService("250." + boost::to_string(j) + ".1.1")),
CNetAddr("250." + boost::to_string(j) + ".1.1"));
int bucket = infoj.GetTriedBucket(nKey1);
buckets.insert(bucket);
}
// Test 29: IP addresses in the different groups should map to more than
// 8 buckets.
BOOST_CHECK(buckets.size() == 160);
}
BOOST_AUTO_TEST_CASE(caddrinfo_get_new_bucket)
{
CAddrManTest addrman;
// Set addrman addr placement to be deterministic.
addrman.MakeDeterministic();
CAddress addr1 = CAddress(CService("250.1.2.1", 8333));
CAddress addr2 = CAddress(CService("250.1.2.1", 9999));
CNetAddr source1 = CNetAddr("250.1.2.1");
CAddrInfo info1 = CAddrInfo(addr1, source1);
uint256 nKey1 = (uint256)(CHashWriter(SER_GETHASH, 0) << 1).GetHash();
uint256 nKey2 = (uint256)(CHashWriter(SER_GETHASH, 0) << 2).GetHash();
BOOST_CHECK(info1.GetNewBucket(nKey1) == 786);
// Test 30: Make sure key actually randomizes bucket placement. A fail on
// this test could be a security issue.
BOOST_CHECK(info1.GetNewBucket(nKey1) != info1.GetNewBucket(nKey2));
// Test 31: Ports should not effect bucket placement in the addr
CAddrInfo info2 = CAddrInfo(addr2, source1);
BOOST_CHECK(info1.GetKey() != info2.GetKey());
BOOST_CHECK(info1.GetNewBucket(nKey1) == info2.GetNewBucket(nKey1));
set<int> buckets;
for (int i = 0; i < 255; i++) {
CAddrInfo infoi = CAddrInfo(
CAddress(CService("250.1.1." + boost::to_string(i))),
CNetAddr("250.1.1." + boost::to_string(i)));
int bucket = infoi.GetNewBucket(nKey1);
buckets.insert(bucket);
}
// Test 32: IP addresses in the same group (\16 prefix for IPv4) should
// always map to the same bucket.
BOOST_CHECK(buckets.size() == 1);
buckets.clear();
for (int j = 0; j < 4 * 255; j++) {
CAddrInfo infoj = CAddrInfo(CAddress(
CService(
boost::to_string(250 + (j / 255)) + "." + boost::to_string(j % 256) + ".1.1")),
CNetAddr("251.4.1.1"));
int bucket = infoj.GetNewBucket(nKey1);
buckets.insert(bucket);
}
// Test 33: IP addresses in the same source groups should map to no more
// than 64 buckets.
BOOST_CHECK(buckets.size() <= 64);
buckets.clear();
for (int p = 0; p < 255; p++) {
CAddrInfo infoj = CAddrInfo(
CAddress(CService("250.1.1.1")),
CNetAddr("250." + boost::to_string(p) + ".1.1"));
int bucket = infoj.GetNewBucket(nKey1);
buckets.insert(bucket);
}
// Test 34: IP addresses in the different source groups should map to more
// than 64 buckets.
BOOST_CHECK(buckets.size() > 64);
}
BOOST_AUTO_TEST_SUITE_END() BOOST_AUTO_TEST_SUITE_END()