minetest/src/unittest/test_connection.cpp

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/*
Minetest
Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "test.h"
#include "log.h"
#include "porting.h"
#include "settings.h"
#include "util/serialize.h"
#include "network/connection.h"
#include "network/networkpacket.h"
#include "network/socket.h"
class TestConnection : public TestBase {
public:
TestConnection()
{
if (INTERNET_SIMULATOR == false)
TestManager::registerTestModule(this);
}
const char *getName() { return "TestConnection"; }
void runTests(IGameDef *gamedef);
void testNetworkPacketSerialize();
void testHelpers();
void testConnectSendReceive();
};
static TestConnection g_test_instance;
void TestConnection::runTests(IGameDef *gamedef)
{
TEST(testNetworkPacketSerialize);
TEST(testHelpers);
TEST(testConnectSendReceive);
}
////////////////////////////////////////////////////////////////////////////////
struct Handler : public con::PeerHandler
{
Handler(const char *a_name) : name(a_name) {}
void peerAdded(con::Peer *peer)
{
infostream << "Handler(" << name << ")::peerAdded(): "
"id=" << peer->id << std::endl;
last_id = peer->id;
count++;
}
void deletingPeer(con::Peer *peer, bool timeout)
{
infostream << "Handler(" << name << ")::deletingPeer(): "
"id=" << peer->id << ", timeout=" << timeout << std::endl;
last_id = peer->id;
count--;
}
s32 count = 0;
u16 last_id = 0;
const char *name;
};
void TestConnection::testNetworkPacketSerialize()
{
const static u8 expected[] = {
0x00, 0x7b,
0x00, 0x02, 0xd8, 0x42, 0xdf, 0x9a
};
if (sizeof(wchar_t) == 2)
warningstream << __FUNCTION__ << " may fail on this platform." << std::endl;
{
NetworkPacket pkt(123, 0);
// serializing wide strings should do surrogate encoding, we test that here
pkt << std::wstring(L"\U00020b9a");
auto buf = pkt.oldForgePacket();
UASSERTEQ(int, buf.getSize(), sizeof(expected));
UASSERT(!memcmp(expected, &buf[0], buf.getSize()));
}
{
NetworkPacket pkt;
pkt.putRawPacket(expected, sizeof(expected), 0);
// same for decoding
std::wstring pkt_s;
pkt >> pkt_s;
UASSERT(pkt_s == L"\U00020b9a");
}
}
void TestConnection::testHelpers()
{
// Some constants for testing
u32 proto_id = 0x12345678;
session_t peer_id = 123;
u8 channel = 2;
SharedBuffer<u8> data1(1);
data1[0] = 100;
Address a(127,0,0,1, 10);
const u16 seqnum = 34352;
con::BufferedPacketPtr p1 = con::makePacket(a, data1,
proto_id, peer_id, channel);
/*
We should now have a packet with this data:
Header:
[0] u32 protocol_id
[4] session_t sender_peer_id
[6] u8 channel
Data:
[7] u8 data1[0]
*/
UASSERT(readU32(&p1->data[0]) == proto_id);
UASSERT(readU16(&p1->data[4]) == peer_id);
UASSERT(readU8(&p1->data[6]) == channel);
UASSERT(readU8(&p1->data[7]) == data1[0]);
//infostream<<"initial data1[0]="<<((u32)data1[0]&0xff)<<std::endl;
SharedBuffer<u8> p2 = con::makeReliablePacket(data1, seqnum);
/*infostream<<"p2.getSize()="<<p2.getSize()<<", data1.getSize()="
<<data1.getSize()<<std::endl;
infostream<<"readU8(&p2[3])="<<readU8(&p2[3])
<<" p2[3]="<<((u32)p2[3]&0xff)<<std::endl;
infostream<<"data1[0]="<<((u32)data1[0]&0xff)<<std::endl;*/
UASSERT(p2.getSize() == 3 + data1.getSize());
UASSERT(readU8(&p2[0]) == con::PACKET_TYPE_RELIABLE);
UASSERT(readU16(&p2[1]) == seqnum);
UASSERT(readU8(&p2[3]) == data1[0]);
}
void TestConnection::testConnectSendReceive()
{
/*
Test some real connections
NOTE: This mostly tests the legacy interface.
*/
u32 proto_id = 0xad26846a;
Handler hand_server("server");
Handler hand_client("client");
Address address(0, 0, 0, 0, 30001);
Address bind_addr(0, 0, 0, 0, 30001);
/*
* Try to use the bind_address for servers with no localhost address
* For example: FreeBSD jails
*/
std::string bind_str = g_settings->get("bind_address");
try {
bind_addr.Resolve(bind_str.c_str());
if (!bind_addr.isIPv6()) {
address = bind_addr;
}
} catch (ResolveError &e) {
}
infostream << "** Creating server Connection" << std::endl;
con::Connection server(proto_id, 512, 5.0, false, &hand_server);
server.Serve(address);
infostream << "** Creating client Connection" << std::endl;
con::Connection client(proto_id, 512, 5.0, false, &hand_client);
UASSERT(hand_server.count == 0);
UASSERT(hand_client.count == 0);
sleep_ms(50);
Address server_address(127, 0, 0, 1, 30001);
if (address != Address(0, 0, 0, 0, 30001)) {
server_address = bind_addr;
}
infostream << "** running client.Connect()" << std::endl;
client.Connect(server_address);
sleep_ms(50);
// Client should not have added client yet
UASSERT(hand_client.count == 0);
try {
NetworkPacket pkt;
infostream << "** running client.Receive()" << std::endl;
client.Receive(&pkt);
infostream << "** Client received: peer_id=" << pkt.getPeerId()
<< ", size=" << pkt.getSize() << std::endl;
} catch (con::NoIncomingDataException &e) {
}
// Client should have added server now
UASSERT(hand_client.count == 1);
UASSERT(hand_client.last_id == 1);
// Server should not have added client yet
UASSERT(hand_server.count == 0);
sleep_ms(100);
try {
NetworkPacket pkt;
infostream << "** running server.Receive()" << std::endl;
server.Receive(&pkt);
infostream << "** Server received: peer_id=" << pkt.getPeerId()
<< ", size=" << pkt.getSize()
<< std::endl;
} catch (con::NoIncomingDataException &e) {
// No actual data received, but the client has
// probably been connected
}
// Client should be the same
UASSERT(hand_client.count == 1);
UASSERT(hand_client.last_id == 1);
// Server should have the client
UASSERT(hand_server.count == 1);
UASSERT(hand_server.last_id == 2);
//sleep_ms(50);
while (client.Connected() == false) {
try {
NetworkPacket pkt;
infostream << "** running client.Receive()" << std::endl;
client.Receive(&pkt);
infostream << "** Client received: peer_id=" << pkt.getPeerId()
<< ", size=" << pkt.getSize() << std::endl;
} catch (con::NoIncomingDataException &e) {
}
sleep_ms(50);
}
sleep_ms(50);
try {
NetworkPacket pkt;
infostream << "** running server.Receive()" << std::endl;
server.Receive(&pkt);
infostream << "** Server received: peer_id=" << pkt.getPeerId()
<< ", size=" << pkt.getSize()
<< std::endl;
} catch (con::NoIncomingDataException &e) {
}
/*
Simple send-receive test
*/
{
NetworkPacket pkt;
pkt.putRawPacket((u8*) "Hello World !", 14, 0);
auto sentdata = pkt.oldForgePacket();
infostream<<"** running client.Send()"<<std::endl;
client.Send(PEER_ID_SERVER, 0, &pkt, true);
sleep_ms(50);
NetworkPacket recvpacket;
infostream << "** running server.Receive()" << std::endl;
server.Receive(&recvpacket);
infostream << "** Server received: peer_id=" << pkt.getPeerId()
<< ", size=" << pkt.getSize()
<< ", data=" << (const char*)pkt.getU8Ptr(0)
<< std::endl;
auto recvdata = pkt.oldForgePacket();
UASSERT(memcmp(*sentdata, *recvdata, recvdata.getSize()) == 0);
}
session_t peer_id_client = 2;
/*
Send a large packet
*/
{
const int datasize = 30000;
NetworkPacket pkt(0, datasize);
for (u16 i=0; i<datasize; i++) {
pkt << (u8) i/4;
}
infostream << "Sending data (size=" << datasize << "):";
for (int i = 0; i < datasize && i < 20; i++) {
if (i % 2 == 0)
infostream << " ";
char buf[10];
porting::mt_snprintf(buf, sizeof(buf), "%.2X",
((int)((const char *)pkt.getU8Ptr(0))[i]) & 0xff);
infostream<<buf;
}
if (datasize > 20)
infostream << "...";
infostream << std::endl;
auto sentdata = pkt.oldForgePacket();
server.Send(peer_id_client, 0, &pkt, true);
//sleep_ms(3000);
Buffer<u8> recvdata;
infostream << "** running client.Receive()" << std::endl;
session_t peer_id = 132;
u16 size = 0;
bool received = false;
u64 timems0 = porting::getTimeMs();
for (;;) {
if (porting::getTimeMs() - timems0 > 5000 || received)
break;
try {
NetworkPacket pkt;
client.Receive(&pkt);
size = pkt.getSize();
peer_id = pkt.getPeerId();
recvdata = pkt.oldForgePacket();
received = true;
} catch (con::NoIncomingDataException &e) {
}
sleep_ms(10);
}
UASSERT(received);
infostream << "** Client received: peer_id=" << peer_id
<< ", size=" << size << std::endl;
infostream << "Received data (size=" << size << "): ";
for (int i = 0; i < size && i < 20; i++) {
if (i % 2 == 0)
infostream << " ";
char buf[10];
porting::mt_snprintf(buf, sizeof(buf), "%.2X", ((int)(recvdata[i])) & 0xff);
infostream << buf;
}
if (size > 20)
infostream << "...";
infostream << std::endl;
UASSERT(memcmp(*sentdata, *recvdata, recvdata.getSize()) == 0);
UASSERT(peer_id == PEER_ID_SERVER);
}
// Check peer handlers
UASSERT(hand_client.count == 1);
UASSERT(hand_client.last_id == 1);
UASSERT(hand_server.count == 1);
UASSERT(hand_server.last_id == 2);
}