*/
#include <iomanip>
-#include <errno.h>
+#include <cerrno>
+#include <algorithm>
+#include <cmath>
#include "connection.h"
#include "serialization.h"
#include "log.h"
#include "porting.h"
+#include "network/connectionthreads.h"
#include "network/networkpacket.h"
+#include "network/peerhandler.h"
#include "util/serialize.h"
#include "util/numeric.h"
#include "util/string.h"
#ifdef NDEBUG
#define LOG(a) a
#define PROFILE(a)
-#undef DEBUG_CONNECTION_KBPS
#else
/* this mutex is used to achieve log message consistency */
-Mutex log_message_mutex;
+std::mutex log_message_mutex;
#define LOG(a) \
{ \
MutexAutoLock loglock(log_message_mutex); \
a; \
}
#define PROFILE(a) a
-//#define DEBUG_CONNECTION_KBPS
-#undef DEBUG_CONNECTION_KBPS
#endif
-
-static inline float CALC_DTIME(unsigned int lasttime, unsigned int curtime) {
- float value = ( curtime - lasttime) / 1000.0;
- return MYMAX(MYMIN(value,0.1),0.0);
-}
-
-/* maximum window size to use, 0xFFFF is theoretical maximum don't think about
- * touching it, the less you're away from it the more likely data corruption
- * will occur
- */
-#define MAX_RELIABLE_WINDOW_SIZE 0x8000
- /* starting value for window size */
-#define MIN_RELIABLE_WINDOW_SIZE 0x40
-
-#define MAX_UDP_PEERS 65535
-
#define PING_TIMEOUT 5.0
-static u16 readPeerId(u8 *packetdata)
-{
- return readU16(&packetdata[4]);
-}
-static u8 readChannel(u8 *packetdata)
-{
- return readU8(&packetdata[6]);
-}
-
-BufferedPacket makePacket(Address &address, u8 *data, u32 datasize,
- u32 protocol_id, u16 sender_peer_id, u8 channel)
+BufferedPacket makePacket(Address &address, const SharedBuffer<u8> &data,
+ u32 protocol_id, session_t sender_peer_id, u8 channel)
{
- u32 packet_size = datasize + BASE_HEADER_SIZE;
+ u32 packet_size = data.getSize() + BASE_HEADER_SIZE;
BufferedPacket p(packet_size);
p.address = address;
writeU16(&p.data[4], sender_peer_id);
writeU8(&p.data[6], channel);
- memcpy(&p.data[BASE_HEADER_SIZE], data, datasize);
+ memcpy(&p.data[BASE_HEADER_SIZE], *data, data.getSize());
return p;
}
-BufferedPacket makePacket(Address &address, SharedBuffer<u8> &data,
- u32 protocol_id, u16 sender_peer_id, u8 channel)
-{
- return makePacket(address, *data, data.getSize(),
- protocol_id, sender_peer_id, channel);
-}
-
-SharedBuffer<u8> makeOriginalPacket(
- SharedBuffer<u8> data)
+SharedBuffer<u8> makeOriginalPacket(const SharedBuffer<u8> &data)
{
u32 header_size = 1;
u32 packet_size = data.getSize() + header_size;
SharedBuffer<u8> b(packet_size);
- writeU8(&(b[0]), TYPE_ORIGINAL);
+ writeU8(&(b[0]), PACKET_TYPE_ORIGINAL);
if (data.getSize() > 0) {
memcpy(&(b[header_size]), *data, data.getSize());
}
return b;
}
-std::list<SharedBuffer<u8> > makeSplitPacket(
- SharedBuffer<u8> data,
- u32 chunksize_max,
- u16 seqnum)
+// Split data in chunks and add TYPE_SPLIT headers to them
+void makeSplitPacket(const SharedBuffer<u8> &data, u32 chunksize_max, u16 seqnum,
+ std::list<SharedBuffer<u8>> *chunks)
{
// Chunk packets, containing the TYPE_SPLIT header
- std::list<SharedBuffer<u8> > chunks;
-
u32 chunk_header_size = 7;
u32 maximum_data_size = chunksize_max - chunk_header_size;
u32 start = 0;
u32 end = 0;
u32 chunk_num = 0;
u16 chunk_count = 0;
- do{
+ do {
end = start + maximum_data_size - 1;
if (end > data.getSize() - 1)
end = data.getSize() - 1;
SharedBuffer<u8> chunk(packet_size);
- writeU8(&chunk[0], TYPE_SPLIT);
+ writeU8(&chunk[0], PACKET_TYPE_SPLIT);
writeU16(&chunk[1], seqnum);
// [3] u16 chunk_count is written at next stage
writeU16(&chunk[5], chunk_num);
memcpy(&chunk[chunk_header_size], &data[start], payload_size);
- chunks.push_back(chunk);
+ chunks->push_back(chunk);
chunk_count++;
start = end + 1;
chunk_num++;
}
- while(end != data.getSize() - 1);
+ while (end != data.getSize() - 1);
- for(std::list<SharedBuffer<u8> >::iterator i = chunks.begin();
- i != chunks.end(); ++i)
- {
+ for (SharedBuffer<u8> &chunk : *chunks) {
// Write chunk_count
- writeU16(&((*i)[3]), chunk_count);
+ writeU16(&(chunk[3]), chunk_count);
}
-
- return chunks;
}
-std::list<SharedBuffer<u8> > makeAutoSplitPacket(
- SharedBuffer<u8> data,
- u32 chunksize_max,
- u16 &split_seqnum)
+void makeAutoSplitPacket(const SharedBuffer<u8> &data, u32 chunksize_max,
+ u16 &split_seqnum, std::list<SharedBuffer<u8>> *list)
{
u32 original_header_size = 1;
- std::list<SharedBuffer<u8> > list;
- if (data.getSize() + original_header_size > chunksize_max)
- {
- list = makeSplitPacket(data, chunksize_max, split_seqnum);
+
+ if (data.getSize() + original_header_size > chunksize_max) {
+ makeSplitPacket(data, chunksize_max, split_seqnum, list);
split_seqnum++;
- return list;
- }
- else
- {
- list.push_back(makeOriginalPacket(data));
+ return;
}
- return list;
+
+ list->push_back(makeOriginalPacket(data));
}
-SharedBuffer<u8> makeReliablePacket(
- SharedBuffer<u8> data,
- u16 seqnum)
+SharedBuffer<u8> makeReliablePacket(const SharedBuffer<u8> &data, u16 seqnum)
{
u32 header_size = 3;
u32 packet_size = data.getSize() + header_size;
SharedBuffer<u8> b(packet_size);
- writeU8(&b[0], TYPE_RELIABLE);
+ writeU8(&b[0], PACKET_TYPE_RELIABLE);
writeU16(&b[1], seqnum);
memcpy(&b[header_size], *data, data.getSize());
ReliablePacketBuffer
*/
-ReliablePacketBuffer::ReliablePacketBuffer(): m_list_size(0) {}
-
void ReliablePacketBuffer::print()
{
MutexAutoLock listlock(m_list_mutex);
LOG(dout_con<<"Dump of ReliablePacketBuffer:" << std::endl);
unsigned int index = 0;
- for(std::list<BufferedPacket>::iterator i = m_list.begin();
- i != m_list.end();
- ++i)
- {
- u16 s = readU16(&(i->data[BASE_HEADER_SIZE+1]));
+ for (BufferedPacket &bufferedPacket : m_list) {
+ u16 s = readU16(&(bufferedPacket.data[BASE_HEADER_SIZE+1]));
LOG(dout_con<<index<< ":" << s << std::endl);
index++;
}
return;
}
u8 type = readU8(&p.data[BASE_HEADER_SIZE + 0]);
- if (type != TYPE_RELIABLE) {
+ if (type != PACKET_TYPE_RELIABLE) {
errorstream << "ReliablePacketBuffer::insert(): type is not reliable"
<< std::endl;
return;
void ReliablePacketBuffer::incrementTimeouts(float dtime)
{
MutexAutoLock listlock(m_list_mutex);
- for(std::list<BufferedPacket>::iterator i = m_list.begin();
- i != m_list.end(); ++i)
- {
- i->time += dtime;
- i->totaltime += dtime;
+ for (BufferedPacket &bufferedPacket : m_list) {
+ bufferedPacket.time += dtime;
+ bufferedPacket.totaltime += dtime;
}
}
{
MutexAutoLock listlock(m_list_mutex);
std::list<BufferedPacket> timed_outs;
- for(std::list<BufferedPacket>::iterator i = m_list.begin();
- i != m_list.end(); ++i)
- {
- if (i->time >= timeout) {
- timed_outs.push_back(*i);
+ for (BufferedPacket &bufferedPacket : m_list) {
+ if (bufferedPacket.time >= timeout) {
+ timed_outs.push_back(bufferedPacket);
//this packet will be sent right afterwards reset timeout here
- i->time = 0.0;
+ bufferedPacket.time = 0.0f;
if (timed_outs.size() >= max_packets)
break;
}
IncomingSplitBuffer::~IncomingSplitBuffer()
{
MutexAutoLock listlock(m_map_mutex);
- for(std::map<u16, IncomingSplitPacket*>::iterator i = m_buf.begin();
- i != m_buf.end(); ++i)
- {
- delete i->second;
+ for (auto &i : m_buf) {
+ delete i.second;
}
}
/*
This will throw a GotSplitPacketException when a full
split packet is constructed.
*/
-SharedBuffer<u8> IncomingSplitBuffer::insert(BufferedPacket &p, bool reliable)
+SharedBuffer<u8> IncomingSplitBuffer::insert(const BufferedPacket &p, bool reliable)
{
MutexAutoLock listlock(m_map_mutex);
u32 headersize = BASE_HEADER_SIZE + 7;
u16 chunk_count = readU16(&p.data[BASE_HEADER_SIZE+3]);
u16 chunk_num = readU16(&p.data[BASE_HEADER_SIZE+5]);
- if (type != TYPE_SPLIT) {
+ if (type != PACKET_TYPE_SPLIT) {
errorstream << "IncomingSplitBuffer::insert(): type is not split"
<< std::endl;
return SharedBuffer<u8>();
}
// Add if doesn't exist
- if (m_buf.find(seqnum) == m_buf.end())
- {
- IncomingSplitPacket *sp = new IncomingSplitPacket();
- sp->chunk_count = chunk_count;
- sp->reliable = reliable;
- m_buf[seqnum] = sp;
+ if (m_buf.find(seqnum) == m_buf.end()) {
+ m_buf[seqnum] = new IncomingSplitPacket(chunk_count, reliable);
}
IncomingSplitPacket *sp = m_buf[seqnum];
- // TODO: These errors should be thrown or something? Dunno.
if (chunk_count != sp->chunk_count)
LOG(derr_con<<"Connection: WARNING: chunk_count="<<chunk_count
<<" != sp->chunk_count="<<sp->chunk_count
sp->chunks[chunk_num] = chunkdata;
// If not all chunks are received, return empty buffer
- if (sp->allReceived() == false)
+ if (!sp->allReceived())
return SharedBuffer<u8>();
// Calculate total size
u32 totalsize = 0;
- for(std::map<u16, SharedBuffer<u8> >::iterator i = sp->chunks.begin();
- i != sp->chunks.end(); ++i)
- {
- totalsize += i->second.getSize();
+ for (const auto &chunk : sp->chunks) {
+ totalsize += chunk.second.getSize();
}
SharedBuffer<u8> fulldata(totalsize);
// Copy chunks to data buffer
u32 start = 0;
- for(u32 chunk_i=0; chunk_i<sp->chunk_count;
- chunk_i++)
- {
- SharedBuffer<u8> buf = sp->chunks[chunk_i];
- u16 chunkdatasize = buf.getSize();
- memcpy(&fulldata[start], *buf, chunkdatasize);
- start += chunkdatasize;;
+ for (u32 chunk_i=0; chunk_i<sp->chunk_count; chunk_i++) {
+ const SharedBuffer<u8> &buf = sp->chunks[chunk_i];
+ u16 buf_chunkdatasize = buf.getSize();
+ memcpy(&fulldata[start], *buf, buf_chunkdatasize);
+ start += buf_chunkdatasize;
}
// Remove sp from buffer
}
void IncomingSplitBuffer::removeUnreliableTimedOuts(float dtime, float timeout)
{
- std::list<u16> remove_queue;
+ std::deque<u16> remove_queue;
{
MutexAutoLock listlock(m_map_mutex);
- for(std::map<u16, IncomingSplitPacket*>::iterator i = m_buf.begin();
- i != m_buf.end(); ++i)
- {
- IncomingSplitPacket *p = i->second;
+ for (auto &i : m_buf) {
+ IncomingSplitPacket *p = i.second;
// Reliable ones are not removed by timeout
- if (p->reliable == true)
+ if (p->reliable)
continue;
p->time += dtime;
if (p->time >= timeout)
- remove_queue.push_back(i->first);
+ remove_queue.push_back(i.first);
}
}
- for(std::list<u16>::iterator j = remove_queue.begin();
- j != remove_queue.end(); ++j)
- {
+ for (u16 j : remove_queue) {
MutexAutoLock listlock(m_map_mutex);
LOG(dout_con<<"NOTE: Removing timed out unreliable split packet"<<std::endl);
- delete m_buf[*j];
- m_buf.erase(*j);
+ delete m_buf[j];
+ m_buf.erase(j);
}
}
/*
- Channel
-*/
+ ConnectionCommand
+ */
-Channel::Channel() :
- window_size(MIN_RELIABLE_WINDOW_SIZE),
- next_incoming_seqnum(SEQNUM_INITIAL),
- next_outgoing_seqnum(SEQNUM_INITIAL),
- next_outgoing_split_seqnum(SEQNUM_INITIAL),
- current_packet_loss(0),
- current_packet_too_late(0),
- current_packet_successfull(0),
- packet_loss_counter(0),
- current_bytes_transfered(0),
- current_bytes_received(0),
- current_bytes_lost(0),
- max_kbps(0.0),
- cur_kbps(0.0),
- avg_kbps(0.0),
- max_incoming_kbps(0.0),
- cur_incoming_kbps(0.0),
- avg_incoming_kbps(0.0),
- max_kbps_lost(0.0),
- cur_kbps_lost(0.0),
- avg_kbps_lost(0.0),
- bpm_counter(0.0),
- rate_samples(0)
+void ConnectionCommand::send(session_t peer_id_, u8 channelnum_, NetworkPacket *pkt,
+ bool reliable_)
{
+ type = CONNCMD_SEND;
+ peer_id = peer_id_;
+ channelnum = channelnum_;
+ data = pkt->oldForgePacket();
+ reliable = reliable_;
}
-Channel::~Channel()
-{
-}
+/*
+ Channel
+*/
u16 Channel::readNextIncomingSeqNum()
{
{
MutexAutoLock internal(m_internal_mutex);
current_bytes_transfered += bytes;
- current_packet_successfull += packets;
+ current_packet_successful += packets;
}
void Channel::UpdateBytesReceived(unsigned int bytes) {
current_packet_too_late++;
}
-void Channel::UpdateTimers(float dtime,bool legacy_peer)
+void Channel::UpdateTimers(float dtime)
{
bpm_counter += dtime;
packet_loss_counter += dtime;
- if (packet_loss_counter > 1.0)
- {
- packet_loss_counter -= 1.0;
+ if (packet_loss_counter > 1.0f) {
+ packet_loss_counter -= 1.0f;
unsigned int packet_loss = 11; /* use a neutral value for initialization */
- unsigned int packets_successfull = 0;
+ unsigned int packets_successful = 0;
//unsigned int packet_too_late = 0;
bool reasonable_amount_of_data_transmitted = false;
MutexAutoLock internal(m_internal_mutex);
packet_loss = current_packet_loss;
//packet_too_late = current_packet_too_late;
- packets_successfull = current_packet_successfull;
+ packets_successful = current_packet_successful;
- if (current_bytes_transfered > (unsigned int) (window_size*512/2))
- {
+ if (current_bytes_transfered > (unsigned int) (window_size*512/2)) {
reasonable_amount_of_data_transmitted = true;
}
current_packet_loss = 0;
current_packet_too_late = 0;
- current_packet_successfull = 0;
- }
-
- /* dynamic window size is only available for non legacy peers */
- if (!legacy_peer) {
- float successfull_to_lost_ratio = 0.0;
- bool done = false;
-
- if (packets_successfull > 0) {
- successfull_to_lost_ratio = packet_loss/packets_successfull;
- }
- else if (packet_loss > 0)
- {
- window_size = MYMAX(
- (window_size - 10),
+ current_packet_successful = 0;
+ }
+
+ /* dynamic window size */
+ float successful_to_lost_ratio = 0.0f;
+ bool done = false;
+
+ if (packets_successful > 0) {
+ successful_to_lost_ratio = packet_loss/packets_successful;
+ } else if (packet_loss > 0) {
+ window_size = std::max(
+ (window_size - 10),
+ MIN_RELIABLE_WINDOW_SIZE);
+ done = true;
+ }
+
+ if (!done) {
+ if ((successful_to_lost_ratio < 0.01f) &&
+ (window_size < MAX_RELIABLE_WINDOW_SIZE)) {
+ /* don't even think about increasing if we didn't even
+ * use major parts of our window */
+ if (reasonable_amount_of_data_transmitted)
+ window_size = std::min(
+ (window_size + 100),
+ MAX_RELIABLE_WINDOW_SIZE);
+ } else if ((successful_to_lost_ratio < 0.05f) &&
+ (window_size < MAX_RELIABLE_WINDOW_SIZE)) {
+ /* don't even think about increasing if we didn't even
+ * use major parts of our window */
+ if (reasonable_amount_of_data_transmitted)
+ window_size = std::min(
+ (window_size + 50),
+ MAX_RELIABLE_WINDOW_SIZE);
+ } else if (successful_to_lost_ratio > 0.15f) {
+ window_size = std::max(
+ (window_size - 100),
+ MIN_RELIABLE_WINDOW_SIZE);
+ } else if (successful_to_lost_ratio > 0.1f) {
+ window_size = std::max(
+ (window_size - 50),
MIN_RELIABLE_WINDOW_SIZE);
- done = true;
- }
-
- if (!done)
- {
- if ((successfull_to_lost_ratio < 0.01) &&
- (window_size < MAX_RELIABLE_WINDOW_SIZE))
- {
- /* don't even think about increasing if we didn't even
- * use major parts of our window */
- if (reasonable_amount_of_data_transmitted)
- window_size = MYMIN(
- (window_size + 100),
- MAX_RELIABLE_WINDOW_SIZE);
- }
- else if ((successfull_to_lost_ratio < 0.05) &&
- (window_size < MAX_RELIABLE_WINDOW_SIZE))
- {
- /* don't even think about increasing if we didn't even
- * use major parts of our window */
- if (reasonable_amount_of_data_transmitted)
- window_size = MYMIN(
- (window_size + 50),
- MAX_RELIABLE_WINDOW_SIZE);
- }
- else if (successfull_to_lost_ratio > 0.15)
- {
- window_size = MYMAX(
- (window_size - 100),
- MIN_RELIABLE_WINDOW_SIZE);
- }
- else if (successfull_to_lost_ratio > 0.1)
- {
- window_size = MYMAX(
- (window_size - 50),
- MIN_RELIABLE_WINDOW_SIZE);
- }
}
}
}
- if (bpm_counter > 10.0)
- {
+ if (bpm_counter > 10.0f) {
{
MutexAutoLock internal(m_internal_mutex);
cur_kbps =
- (((float) current_bytes_transfered)/bpm_counter)/1024.0;
+ (((float) current_bytes_transfered)/bpm_counter)/1024.0f;
current_bytes_transfered = 0;
cur_kbps_lost =
- (((float) current_bytes_lost)/bpm_counter)/1024.0;
+ (((float) current_bytes_lost)/bpm_counter)/1024.0f;
current_bytes_lost = 0;
cur_incoming_kbps =
- (((float) current_bytes_received)/bpm_counter)/1024.0;
+ (((float) current_bytes_received)/bpm_counter)/1024.0f;
current_bytes_received = 0;
- bpm_counter = 0;
+ bpm_counter = 0.0f;
}
- if (cur_kbps > max_kbps)
- {
+ if (cur_kbps > max_kbps) {
max_kbps = cur_kbps;
}
- if (cur_kbps_lost > max_kbps_lost)
- {
+ if (cur_kbps_lost > max_kbps_lost) {
max_kbps_lost = cur_kbps_lost;
}
Peer
*/
-PeerHelper::PeerHelper() :
- m_peer(0)
-{}
-
PeerHelper::PeerHelper(Peer* peer) :
m_peer(peer)
{
- if (peer != NULL)
- {
- if (!peer->IncUseCount())
- {
- m_peer = 0;
- }
- }
+ if (peer && !peer->IncUseCount())
+ m_peer = nullptr;
}
PeerHelper::~PeerHelper()
{
- if (m_peer != 0)
+ if (m_peer)
m_peer->DecUseCount();
- m_peer = 0;
+ m_peer = nullptr;
}
PeerHelper& PeerHelper::operator=(Peer* peer)
{
m_peer = peer;
- if (peer != NULL)
- {
- if (!peer->IncUseCount())
- {
- m_peer = 0;
- }
- }
+ if (peer && !peer->IncUseCount())
+ m_peer = nullptr;
return *this;
}
return m_peer;
}
-bool PeerHelper::operator!() {
+bool PeerHelper::operator!()
+{
return ! m_peer;
}
{
MutexAutoLock lock(m_exclusive_access_mutex);
- if (!m_pending_deletion)
- {
+ if (!m_pending_deletion) {
this->m_usage++;
return true;
}
delete this;
}
-void Peer::RTTStatistics(float rtt, std::string profiler_id,
+void Peer::RTTStatistics(float rtt, const std::string &profiler_id,
unsigned int num_samples) {
if (m_last_rtt > 0) {
m_rtt.jitter_avg = m_rtt.jitter_avg * (num_samples/(num_samples-1)) +
jitter * (1/num_samples);
- if (profiler_id != "")
- {
- g_profiler->graphAdd(profiler_id + "_rtt", rtt);
- g_profiler->graphAdd(profiler_id + "_jitter", jitter);
+ if (!profiler_id.empty()) {
+ g_profiler->graphAdd(profiler_id + " RTT [ms]", rtt * 1000.f);
+ g_profiler->graphAdd(profiler_id + " jitter [ms]", jitter * 1000.f);
}
}
/* save values required for next loop */
bool Peer::isTimedOut(float timeout)
{
MutexAutoLock lock(m_exclusive_access_mutex);
- u32 current_time = porting::getTimeMs();
+ u64 current_time = porting::getTimeMs();
float dtime = CALC_DTIME(m_last_timeout_check,current_time);
m_last_timeout_check = current_time;
}
UDPPeer::UDPPeer(u16 a_id, Address a_address, Connection* connection) :
- Peer(a_address,a_id,connection),
- m_pending_disconnect(false),
- resend_timeout(0.5),
- m_legacy_peer(true)
+ Peer(a_address,a_id,connection)
{
+ for (Channel &channel : channels)
+ channel.setWindowSize(g_settings->getU16("max_packets_per_iteration"));
}
bool UDPPeer::getAddress(MTProtocols type,Address& toset)
return false;
}
-void UDPPeer::setNonLegacyPeer()
-{
- m_legacy_peer = false;
- for(unsigned int i=0; i< CHANNEL_COUNT; i++)
- {
- channels->setWindowSize(g_settings->getU16("max_packets_per_iteration"));
- }
-}
-
void UDPPeer::reportRTT(float rtt)
{
if (rtt < 0.0) {
if (m_ping_timer >= PING_TIMEOUT)
{
// Create and send PING packet
- writeU8(&data[0], TYPE_CONTROL);
+ writeU8(&data[0], PACKET_TYPE_CONTROL);
writeU8(&data[1], CONTROLTYPE_PING);
m_ping_timer = 0.0;
return true;
sanity_check(c.data.getSize() < MAX_RELIABLE_WINDOW_SIZE*512);
- std::list<SharedBuffer<u8> > originals;
+ std::list<SharedBuffer<u8>> originals;
u16 split_sequence_number = channels[c.channelnum].readNextSplitSeqNum();
- if (c.raw)
- {
- originals.push_back(c.data);
- }
- else {
- originals = makeAutoSplitPacket(c.data, chunksize_max,split_sequence_number);
+ if (c.raw) {
+ originals.emplace_back(c.data);
+ } else {
+ makeAutoSplitPacket(c.data, chunksize_max,split_sequence_number, &originals);
channels[c.channelnum].setNextSplitSeqNum(split_sequence_number);
}
std::queue<BufferedPacket> toadd;
volatile u16 initial_sequence_number = 0;
- for(std::list<SharedBuffer<u8> >::iterator i = originals.begin();
- i != originals.end(); ++i)
- {
+ for (SharedBuffer<u8> &original : originals) {
u16 seqnum = channels[c.channelnum].getOutgoingSequenceNumber(have_sequence_number);
/* oops, we don't have enough sequence numbers to send this packet */
have_initial_sequence_number = true;
}
- SharedBuffer<u8> reliable = makeReliablePacket(*i, seqnum);
+ SharedBuffer<u8> reliable = makeReliablePacket(original, seqnum);
// Add base headers and make a packet
BufferedPacket p = con::makePacket(address, reliable,
if (have_sequence_number) {
volatile u16 pcount = 0;
- while(toadd.size() > 0) {
+ while (!toadd.empty()) {
BufferedPacket p = toadd.front();
toadd.pop();
// LOG(dout_con<<connection->getDesc()
sanity_check(channels[c.channelnum].queued_reliables.size() < 0xFFFF);
return true;
}
- else {
- volatile u16 packets_available = toadd.size();
- /* we didn't get a single sequence number no need to fill queue */
- if (!have_initial_sequence_number)
- {
- return false;
- }
- while(toadd.size() > 0) {
- /* remove packet */
- toadd.pop();
- bool successfully_put_back_sequence_number
- = channels[c.channelnum].putBackSequenceNumber(
- (initial_sequence_number+toadd.size() % (SEQNUM_MAX+1)));
-
- FATAL_ERROR_IF(!successfully_put_back_sequence_number, "error");
- }
- LOG(dout_con<<m_connection->getDesc()
- << " Windowsize exceeded on reliable sending "
- << c.data.getSize() << " bytes"
- << std::endl << "\t\tinitial_sequence_number: "
- << initial_sequence_number
- << std::endl << "\t\tgot at most : "
- << packets_available << " packets"
- << std::endl << "\t\tpackets queued : "
- << channels[c.channelnum].outgoing_reliables_sent.size()
- << std::endl);
+ volatile u16 packets_available = toadd.size();
+ /* we didn't get a single sequence number no need to fill queue */
+ if (!have_initial_sequence_number) {
return false;
}
+
+ while (!toadd.empty()) {
+ /* remove packet */
+ toadd.pop();
+
+ bool successfully_put_back_sequence_number
+ = channels[c.channelnum].putBackSequenceNumber(
+ (initial_sequence_number+toadd.size() % (SEQNUM_MAX+1)));
+
+ FATAL_ERROR_IF(!successfully_put_back_sequence_number, "error");
+ }
+
+ LOG(dout_con<<m_connection->getDesc()
+ << " Windowsize exceeded on reliable sending "
+ << c.data.getSize() << " bytes"
+ << std::endl << "\t\tinitial_sequence_number: "
+ << initial_sequence_number
+ << std::endl << "\t\tgot at most : "
+ << packets_available << " packets"
+ << std::endl << "\t\tpackets queued : "
+ << channels[c.channelnum].outgoing_reliables_sent.size()
+ << std::endl);
+
+ return false;
}
void UDPPeer::RunCommandQueues(
unsigned int maxtransfer)
{
- for (unsigned int i = 0; i < CHANNEL_COUNT; i++) {
+ for (Channel &channel : channels) {
unsigned int commands_processed = 0;
- if ((channels[i].queued_commands.size() > 0) &&
- (channels[i].queued_reliables.size() < maxtransfer) &&
+ if ((!channel.queued_commands.empty()) &&
+ (channel.queued_reliables.size() < maxtransfer) &&
(commands_processed < maxcommands)) {
try {
- ConnectionCommand c = channels[i].queued_commands.front();
+ ConnectionCommand c = channel.queued_commands.front();
LOG(dout_con << m_connection->getDesc()
<< " processing queued reliable command " << std::endl);
// Packet is processed, remove it from queue
if (processReliableSendCommand(c,max_packet_size)) {
- channels[i].queued_commands.pop_front();
+ channel.queued_commands.pop_front();
} else {
LOG(dout_con << m_connection->getDesc()
<< " Failed to queue packets for peer_id: " << c.peer_id
u16 UDPPeer::getNextSplitSequenceNumber(u8 channel)
{
assert(channel < CHANNEL_COUNT); // Pre-condition
- return channels[channel].readNextIncomingSeqNum();
+ return channels[channel].readNextSplitSeqNum();
}
void UDPPeer::setNextSplitSequenceNumber(u8 channel, u16 seqnum)
channels[channel].setNextSplitSeqNum(seqnum);
}
-SharedBuffer<u8> UDPPeer::addSpiltPacket(u8 channel,
- BufferedPacket toadd,
- bool reliable)
+SharedBuffer<u8> UDPPeer::addSplitPacket(u8 channel, const BufferedPacket &toadd,
+ bool reliable)
{
assert(channel < CHANNEL_COUNT); // Pre-condition
- return channels[channel].incoming_splits.insert(toadd,reliable);
+ return channels[channel].incoming_splits.insert(toadd, reliable);
}
-/******************************************************************************/
-/* Connection Threads */
-/******************************************************************************/
+/*
+ Connection
+*/
-ConnectionSendThread::ConnectionSendThread(unsigned int max_packet_size,
- float timeout) :
- Thread("ConnectionSend"),
- m_connection(NULL),
- m_max_packet_size(max_packet_size),
- m_timeout(timeout),
- m_max_commands_per_iteration(1),
- m_max_data_packets_per_iteration(g_settings->getU16("max_packets_per_iteration")),
- m_max_packets_requeued(256)
-{
-}
+Connection::Connection(u32 protocol_id, u32 max_packet_size, float timeout,
+ bool ipv6, PeerHandler *peerhandler) :
+ m_udpSocket(ipv6),
+ m_protocol_id(protocol_id),
+ m_sendThread(new ConnectionSendThread(max_packet_size, timeout)),
+ m_receiveThread(new ConnectionReceiveThread(max_packet_size)),
+ m_bc_peerhandler(peerhandler)
-void * ConnectionSendThread::run()
{
- assert(m_connection);
-
- LOG(dout_con<<m_connection->getDesc()
- <<"ConnectionSend thread started"<<std::endl);
-
- u32 curtime = porting::getTimeMs();
- u32 lasttime = curtime;
-
- PROFILE(std::stringstream ThreadIdentifier);
- PROFILE(ThreadIdentifier << "ConnectionSend: [" << m_connection->getDesc() << "]");
-
- /* if stop is requested don't stop immediately but try to send all */
- /* packets first */
- while(!stopRequested() || packetsQueued()) {
- BEGIN_DEBUG_EXCEPTION_HANDLER
- PROFILE(ScopeProfiler sp(g_profiler, ThreadIdentifier.str(), SPT_AVG));
-
- m_iteration_packets_avaialble = m_max_data_packets_per_iteration;
-
- /* wait for trigger or timeout */
- m_send_sleep_semaphore.wait(50);
+ m_udpSocket.setTimeoutMs(5);
- /* remove all triggers */
- while(m_send_sleep_semaphore.wait(0)) {}
+ m_sendThread->setParent(this);
+ m_receiveThread->setParent(this);
- lasttime = curtime;
- curtime = porting::getTimeMs();
- float dtime = CALC_DTIME(lasttime,curtime);
+ m_sendThread->start();
+ m_receiveThread->start();
+}
- /* first do all the reliable stuff */
- runTimeouts(dtime);
- /* translate commands to packets */
- ConnectionCommand c = m_connection->m_command_queue.pop_frontNoEx(0);
- while(c.type != CONNCMD_NONE)
- {
- if (c.reliable)
- processReliableCommand(c);
- else
- processNonReliableCommand(c);
+Connection::~Connection()
+{
+ m_shutting_down = true;
+ // request threads to stop
+ m_sendThread->stop();
+ m_receiveThread->stop();
- c = m_connection->m_command_queue.pop_frontNoEx(0);
- }
+ //TODO for some unkonwn reason send/receive threads do not exit as they're
+ // supposed to be but wait on peer timeout. To speed up shutdown we reduce
+ // timeout to half a second.
+ m_sendThread->setPeerTimeout(0.5);
- /* send non reliable packets */
- sendPackets(dtime);
+ // wait for threads to finish
+ m_sendThread->wait();
+ m_receiveThread->wait();
- END_DEBUG_EXCEPTION_HANDLER(errorstream);
+ // Delete peers
+ for (auto &peer : m_peers) {
+ delete peer.second;
}
-
- PROFILE(g_profiler->remove(ThreadIdentifier.str()));
- return NULL;
}
-void ConnectionSendThread::Trigger()
+/* Internal stuff */
+void Connection::putEvent(ConnectionEvent &e)
{
- m_send_sleep_semaphore.post();
+ assert(e.type != CONNEVENT_NONE); // Pre-condition
+ m_event_queue.push_back(e);
}
-bool ConnectionSendThread::packetsQueued()
+void Connection::TriggerSend()
{
- std::list<u16> peerIds = m_connection->getPeerIDs();
-
- if (!m_outgoing_queue.empty() && !peerIds.empty())
- return true;
-
- for(std::list<u16>::iterator j = peerIds.begin();
- j != peerIds.end(); ++j)
- {
- PeerHelper peer = m_connection->getPeerNoEx(*j);
-
- if (!peer)
- continue;
-
- if (dynamic_cast<UDPPeer*>(&peer) == 0)
- continue;
+ m_sendThread->Trigger();
+}
- for(u16 i=0; i < CHANNEL_COUNT; i++) {
- Channel *channel = &(dynamic_cast<UDPPeer*>(&peer))->channels[i];
+PeerHelper Connection::getPeerNoEx(session_t peer_id)
+{
+ MutexAutoLock peerlock(m_peers_mutex);
+ std::map<session_t, Peer *>::iterator node = m_peers.find(peer_id);
- if (channel->queued_commands.size() > 0) {
- return true;
- }
- }
+ if (node == m_peers.end()) {
+ return PeerHelper(NULL);
}
+ // Error checking
+ FATAL_ERROR_IF(node->second->id != peer_id, "Invalid peer id");
- return false;
+ return PeerHelper(node->second);
}
-void ConnectionSendThread::runTimeouts(float dtime)
+/* find peer_id for address */
+u16 Connection::lookupPeer(Address& sender)
{
- std::list<u16> timeouted_peers;
- std::list<u16> peerIds = m_connection->getPeerIDs();
-
- for(std::list<u16>::iterator j = peerIds.begin();
- j != peerIds.end(); ++j)
+ MutexAutoLock peerlock(m_peers_mutex);
+ std::map<u16, Peer*>::iterator j;
+ j = m_peers.begin();
+ for(; j != m_peers.end(); ++j)
{
- PeerHelper peer = m_connection->getPeerNoEx(*j);
-
- if (!peer)
- continue;
-
- if (dynamic_cast<UDPPeer*>(&peer) == 0)
- continue;
-
- PROFILE(std::stringstream peerIdentifier);
- PROFILE(peerIdentifier << "runTimeouts[" << m_connection->getDesc()
- << ";" << *j << ";RELIABLE]");
- PROFILE(ScopeProfiler peerprofiler(g_profiler, peerIdentifier.str(), SPT_AVG));
-
- SharedBuffer<u8> data(2); // data for sending ping, required here because of goto
-
- /*
- Check peer timeout
- */
- if (peer->isTimedOut(m_timeout))
- {
- infostream<<m_connection->getDesc()
- <<"RunTimeouts(): Peer "<<peer->id
- <<" has timed out."
- <<" (source=peer->timeout_counter)"
- <<std::endl;
- // Add peer to the list
- timeouted_peers.push_back(peer->id);
- // Don't bother going through the buffers of this one
+ Peer *peer = j->second;
+ if (peer->isPendingDeletion())
continue;
- }
- float resend_timeout = dynamic_cast<UDPPeer*>(&peer)->getResendTimeout();
- for(u16 i=0; i<CHANNEL_COUNT; i++)
- {
- std::list<BufferedPacket> timed_outs;
- Channel *channel = &(dynamic_cast<UDPPeer*>(&peer))->channels[i];
-
- if (dynamic_cast<UDPPeer*>(&peer)->getLegacyPeer())
- channel->setWindowSize(g_settings->getU16("workaround_window_size"));
-
- // Remove timed out incomplete unreliable split packets
- channel->incoming_splits.removeUnreliableTimedOuts(dtime, m_timeout);
-
- // Increment reliable packet times
- channel->outgoing_reliables_sent.incrementTimeouts(dtime);
-
- unsigned int numpeers = m_connection->m_peers.size();
-
- if (numpeers == 0)
- return;
-
- // Re-send timed out outgoing reliables
- timed_outs = channel->
- outgoing_reliables_sent.getTimedOuts(resend_timeout,
- (m_max_data_packets_per_iteration/numpeers));
+ Address tocheck;
- channel->UpdatePacketLossCounter(timed_outs.size());
- g_profiler->graphAdd("packets_lost", timed_outs.size());
+ if ((peer->getAddress(MTP_MINETEST_RELIABLE_UDP, tocheck)) && (tocheck == sender))
+ return peer->id;
- m_iteration_packets_avaialble -= timed_outs.size();
+ if ((peer->getAddress(MTP_UDP, tocheck)) && (tocheck == sender))
+ return peer->id;
+ }
- for(std::list<BufferedPacket>::iterator k = timed_outs.begin();
- k != timed_outs.end(); ++k)
- {
- u16 peer_id = readPeerId(*(k->data));
- u8 channelnum = readChannel(*(k->data));
- u16 seqnum = readU16(&(k->data[BASE_HEADER_SIZE+1]));
+ return PEER_ID_INEXISTENT;
+}
- channel->UpdateBytesLost(k->data.getSize());
- k->resend_count++;
+bool Connection::deletePeer(session_t peer_id, bool timeout)
+{
+ Peer *peer = 0;
- LOG(derr_con<<m_connection->getDesc()
- <<"RE-SENDING timed-out RELIABLE to "
- << k->address.serializeString()
- << "(t/o="<<resend_timeout<<"): "
- <<"from_peer_id="<<peer_id
- <<", channel="<<((int)channelnum&0xff)
- <<", seqnum="<<seqnum
- <<std::endl);
+ /* lock list as short as possible */
+ {
+ MutexAutoLock peerlock(m_peers_mutex);
+ if (m_peers.find(peer_id) == m_peers.end())
+ return false;
+ peer = m_peers[peer_id];
+ m_peers.erase(peer_id);
+ m_peer_ids.remove(peer_id);
+ }
- rawSend(*k);
+ Address peer_address;
+ //any peer has a primary address this never fails!
+ peer->getAddress(MTP_PRIMARY, peer_address);
+ // Create event
+ ConnectionEvent e;
+ e.peerRemoved(peer_id, timeout, peer_address);
+ putEvent(e);
- // do not handle rtt here as we can't decide if this packet was
- // lost or really takes more time to transmit
- }
- channel->UpdateTimers(dtime,dynamic_cast<UDPPeer*>(&peer)->getLegacyPeer());
- }
- /* send ping if necessary */
- if (dynamic_cast<UDPPeer*>(&peer)->Ping(dtime,data)) {
- LOG(dout_con<<m_connection->getDesc()
- <<"Sending ping for peer_id: "
- << dynamic_cast<UDPPeer*>(&peer)->id <<std::endl);
- /* this may fail if there ain't a sequence number left */
- if (!rawSendAsPacket(dynamic_cast<UDPPeer*>(&peer)->id, 0, data, true))
- {
- //retrigger with reduced ping interval
- dynamic_cast<UDPPeer*>(&peer)->Ping(4.0,data);
- }
- }
+ peer->Drop();
+ return true;
+}
- dynamic_cast<UDPPeer*>(&peer)->RunCommandQueues(m_max_packet_size,
- m_max_commands_per_iteration,
- m_max_packets_requeued);
- }
+/* Interface */
- // Remove timed out peers
- for(std::list<u16>::iterator i = timeouted_peers.begin();
- i != timeouted_peers.end(); ++i)
- {
- LOG(derr_con<<m_connection->getDesc()
- <<"RunTimeouts(): Removing peer "<<(*i)<<std::endl);
- m_connection->deletePeer(*i, true);
+ConnectionEvent Connection::waitEvent(u32 timeout_ms)
+{
+ try {
+ return m_event_queue.pop_front(timeout_ms);
+ } catch(ItemNotFoundException &ex) {
+ ConnectionEvent e;
+ e.type = CONNEVENT_NONE;
+ return e;
}
}
-void ConnectionSendThread::rawSend(const BufferedPacket &packet)
+void Connection::putCommand(ConnectionCommand &c)
{
- try{
- m_connection->m_udpSocket.Send(packet.address, *packet.data,
- packet.data.getSize());
- LOG(dout_con <<m_connection->getDesc()
- << " rawSend: " << packet.data.getSize()
- << " bytes sent" << std::endl);
- } catch(SendFailedException &e) {
- LOG(derr_con<<m_connection->getDesc()
- <<"Connection::rawSend(): SendFailedException: "
- <<packet.address.serializeString()<<std::endl);
+ if (!m_shutting_down) {
+ m_command_queue.push_back(c);
+ m_sendThread->Trigger();
}
}
-void ConnectionSendThread::sendAsPacketReliable(BufferedPacket& p, Channel* channel)
+void Connection::Serve(Address bind_addr)
{
- try{
- p.absolute_send_time = porting::getTimeMs();
- // Buffer the packet
- channel->outgoing_reliables_sent.insert(p,
- (channel->readOutgoingSequenceNumber() - MAX_RELIABLE_WINDOW_SIZE)
- % (MAX_RELIABLE_WINDOW_SIZE+1));
- }
- catch(AlreadyExistsException &e)
- {
- LOG(derr_con<<m_connection->getDesc()
- <<"WARNING: Going to send a reliable packet"
- <<" in outgoing buffer" <<std::endl);
- }
+ ConnectionCommand c;
+ c.serve(bind_addr);
+ putCommand(c);
+}
- // Send the packet
- rawSend(p);
+void Connection::Connect(Address address)
+{
+ ConnectionCommand c;
+ c.connect(address);
+ putCommand(c);
}
-bool ConnectionSendThread::rawSendAsPacket(u16 peer_id, u8 channelnum,
- SharedBuffer<u8> data, bool reliable)
+bool Connection::Connected()
{
- PeerHelper peer = m_connection->getPeerNoEx(peer_id);
- if (!peer) {
- LOG(dout_con<<m_connection->getDesc()
- <<" INFO: dropped packet for non existent peer_id: "
- << peer_id << std::endl);
- FATAL_ERROR_IF(!reliable, "Trying to send raw packet reliable but no peer found!");
+ MutexAutoLock peerlock(m_peers_mutex);
+
+ if (m_peers.size() != 1)
return false;
- }
- Channel *channel = &(dynamic_cast<UDPPeer*>(&peer)->channels[channelnum]);
- if (reliable)
- {
- bool have_sequence_number_for_raw_packet = true;
- u16 seqnum =
- channel->getOutgoingSequenceNumber(have_sequence_number_for_raw_packet);
+ std::map<session_t, Peer *>::iterator node = m_peers.find(PEER_ID_SERVER);
+ if (node == m_peers.end())
+ return false;
- if (!have_sequence_number_for_raw_packet)
- return false;
+ if (m_peer_id == PEER_ID_INEXISTENT)
+ return false;
- SharedBuffer<u8> reliable = makeReliablePacket(data, seqnum);
- Address peer_address;
- peer->getAddress(MTP_MINETEST_RELIABLE_UDP, peer_address);
-
- // Add base headers and make a packet
- BufferedPacket p = con::makePacket(peer_address, reliable,
- m_connection->GetProtocolID(), m_connection->GetPeerID(),
- channelnum);
-
- // first check if our send window is already maxed out
- if (channel->outgoing_reliables_sent.size()
- < channel->getWindowSize()) {
- LOG(dout_con<<m_connection->getDesc()
- <<" INFO: sending a reliable packet to peer_id " << peer_id
- <<" channel: " << channelnum
- <<" seqnum: " << seqnum << std::endl);
- sendAsPacketReliable(p,channel);
- return true;
- }
- else {
- LOG(dout_con<<m_connection->getDesc()
- <<" INFO: queueing reliable packet for peer_id: " << peer_id
- <<" channel: " << channelnum
- <<" seqnum: " << seqnum << std::endl);
- channel->queued_reliables.push(p);
- return false;
- }
- }
- else
- {
- Address peer_address;
-
- if (peer->getAddress(MTP_UDP, peer_address))
- {
- // Add base headers and make a packet
- BufferedPacket p = con::makePacket(peer_address, data,
- m_connection->GetProtocolID(), m_connection->GetPeerID(),
- channelnum);
-
- // Send the packet
- rawSend(p);
- return true;
- }
- else {
- LOG(dout_con<<m_connection->getDesc()
- <<" INFO: dropped unreliable packet for peer_id: " << peer_id
- <<" because of (yet) missing udp address" << std::endl);
- return false;
- }
- }
-
- //never reached
- return false;
-}
-
-void ConnectionSendThread::processReliableCommand(ConnectionCommand &c)
-{
- assert(c.reliable); // Pre-condition
-
- switch(c.type) {
- case CONNCMD_NONE:
- LOG(dout_con<<m_connection->getDesc()
- <<"UDP processing reliable CONNCMD_NONE"<<std::endl);
- return;
-
- case CONNCMD_SEND:
- LOG(dout_con<<m_connection->getDesc()
- <<"UDP processing reliable CONNCMD_SEND"<<std::endl);
- sendReliable(c);
- return;
-
- case CONNCMD_SEND_TO_ALL:
- LOG(dout_con<<m_connection->getDesc()
- <<"UDP processing CONNCMD_SEND_TO_ALL"<<std::endl);
- sendToAllReliable(c);
- return;
-
- case CONCMD_CREATE_PEER:
- LOG(dout_con<<m_connection->getDesc()
- <<"UDP processing reliable CONCMD_CREATE_PEER"<<std::endl);
- if (!rawSendAsPacket(c.peer_id,c.channelnum,c.data,c.reliable))
- {
- /* put to queue if we couldn't send it immediately */
- sendReliable(c);
- }
- return;
-
- case CONCMD_DISABLE_LEGACY:
- LOG(dout_con<<m_connection->getDesc()
- <<"UDP processing reliable CONCMD_DISABLE_LEGACY"<<std::endl);
- if (!rawSendAsPacket(c.peer_id,c.channelnum,c.data,c.reliable))
- {
- /* put to queue if we couldn't send it immediately */
- sendReliable(c);
- }
- return;
-
- case CONNCMD_SERVE:
- case CONNCMD_CONNECT:
- case CONNCMD_DISCONNECT:
- case CONCMD_ACK:
- FATAL_ERROR("Got command that shouldn't be reliable as reliable command");
- default:
- LOG(dout_con<<m_connection->getDesc()
- <<" Invalid reliable command type: " << c.type <<std::endl);
- }
-}
-
-
-void ConnectionSendThread::processNonReliableCommand(ConnectionCommand &c)
-{
- assert(!c.reliable); // Pre-condition
-
- switch(c.type) {
- case CONNCMD_NONE:
- LOG(dout_con<<m_connection->getDesc()
- <<" UDP processing CONNCMD_NONE"<<std::endl);
- return;
- case CONNCMD_SERVE:
- LOG(dout_con<<m_connection->getDesc()
- <<" UDP processing CONNCMD_SERVE port="
- <<c.address.serializeString()<<std::endl);
- serve(c.address);
- return;
- case CONNCMD_CONNECT:
- LOG(dout_con<<m_connection->getDesc()
- <<" UDP processing CONNCMD_CONNECT"<<std::endl);
- connect(c.address);
- return;
- case CONNCMD_DISCONNECT:
- LOG(dout_con<<m_connection->getDesc()
- <<" UDP processing CONNCMD_DISCONNECT"<<std::endl);
- disconnect();
- return;
- case CONNCMD_DISCONNECT_PEER:
- LOG(dout_con<<m_connection->getDesc()
- <<" UDP processing CONNCMD_DISCONNECT_PEER"<<std::endl);
- disconnect_peer(c.peer_id);
- return;
- case CONNCMD_SEND:
- LOG(dout_con<<m_connection->getDesc()
- <<" UDP processing CONNCMD_SEND"<<std::endl);
- send(c.peer_id, c.channelnum, c.data);
- return;
- case CONNCMD_SEND_TO_ALL:
- LOG(dout_con<<m_connection->getDesc()
- <<" UDP processing CONNCMD_SEND_TO_ALL"<<std::endl);
- sendToAll(c.channelnum, c.data);
- return;
- case CONCMD_ACK:
- LOG(dout_con<<m_connection->getDesc()
- <<" UDP processing CONCMD_ACK"<<std::endl);
- sendAsPacket(c.peer_id,c.channelnum,c.data,true);
- return;
- case CONCMD_CREATE_PEER:
- FATAL_ERROR("Got command that should be reliable as unreliable command");
- default:
- LOG(dout_con<<m_connection->getDesc()
- <<" Invalid command type: " << c.type <<std::endl);
- }
-}
-
-void ConnectionSendThread::serve(Address bind_address)
-{
- LOG(dout_con<<m_connection->getDesc()
- <<"UDP serving at port " << bind_address.serializeString() <<std::endl);
- try{
- m_connection->m_udpSocket.Bind(bind_address);
- m_connection->SetPeerID(PEER_ID_SERVER);
- }
- catch(SocketException &e) {
- // Create event
- ConnectionEvent ce;
- ce.bindFailed();
- m_connection->putEvent(ce);
- }
-}
-
-void ConnectionSendThread::connect(Address address)
-{
- LOG(dout_con<<m_connection->getDesc()<<" connecting to "<<address.serializeString()
- <<":"<<address.getPort()<<std::endl);
-
- UDPPeer *peer = m_connection->createServerPeer(address);
-
- // Create event
- ConnectionEvent e;
- e.peerAdded(peer->id, peer->address);
- m_connection->putEvent(e);
-
- Address bind_addr;
-
- if (address.isIPv6())
- bind_addr.setAddress((IPv6AddressBytes*) NULL);
- else
- bind_addr.setAddress(0,0,0,0);
-
- m_connection->m_udpSocket.Bind(bind_addr);
-
- // Send a dummy packet to server with peer_id = PEER_ID_INEXISTENT
- m_connection->SetPeerID(PEER_ID_INEXISTENT);
- NetworkPacket pkt(0,0);
- m_connection->Send(PEER_ID_SERVER, 0, &pkt, true);
-}
-
-void ConnectionSendThread::disconnect()
-{
- LOG(dout_con<<m_connection->getDesc()<<" disconnecting"<<std::endl);
-
- // Create and send DISCO packet
- SharedBuffer<u8> data(2);
- writeU8(&data[0], TYPE_CONTROL);
- writeU8(&data[1], CONTROLTYPE_DISCO);
-
-
- // Send to all
- std::list<u16> peerids = m_connection->getPeerIDs();
-
- for (std::list<u16>::iterator i = peerids.begin();
- i != peerids.end();
- ++i)
- {
- sendAsPacket(*i, 0,data,false);
- }
-}
-
-void ConnectionSendThread::disconnect_peer(u16 peer_id)
-{
- LOG(dout_con<<m_connection->getDesc()<<" disconnecting peer"<<std::endl);
-
- // Create and send DISCO packet
- SharedBuffer<u8> data(2);
- writeU8(&data[0], TYPE_CONTROL);
- writeU8(&data[1], CONTROLTYPE_DISCO);
- sendAsPacket(peer_id, 0,data,false);
-
- PeerHelper peer = m_connection->getPeerNoEx(peer_id);
-
- if (!peer)
- return;
-
- if (dynamic_cast<UDPPeer*>(&peer) == 0)
- {
- return;
- }
-
- dynamic_cast<UDPPeer*>(&peer)->m_pending_disconnect = true;
-}
-
-void ConnectionSendThread::send(u16 peer_id, u8 channelnum,
- SharedBuffer<u8> data)
-{
- assert(channelnum < CHANNEL_COUNT); // Pre-condition
-
- PeerHelper peer = m_connection->getPeerNoEx(peer_id);
- if (!peer)
- {
- LOG(dout_con<<m_connection->getDesc()<<" peer: peer_id="<<peer_id
- << ">>>NOT<<< found on sending packet"
- << ", channel " << (channelnum % 0xFF)
- << ", size: " << data.getSize() <<std::endl);
- return;
- }
-
- LOG(dout_con<<m_connection->getDesc()<<" sending to peer_id="<<peer_id
- << ", channel " << (channelnum % 0xFF)
- << ", size: " << data.getSize() <<std::endl);
-
- u16 split_sequence_number = peer->getNextSplitSequenceNumber(channelnum);
-
- u32 chunksize_max = m_max_packet_size - BASE_HEADER_SIZE;
- std::list<SharedBuffer<u8> > originals;
-
- originals = makeAutoSplitPacket(data, chunksize_max,split_sequence_number);
-
- peer->setNextSplitSequenceNumber(channelnum,split_sequence_number);
-
- for(std::list<SharedBuffer<u8> >::iterator i = originals.begin();
- i != originals.end(); ++i)
- {
- SharedBuffer<u8> original = *i;
- sendAsPacket(peer_id, channelnum, original);
- }
-}
-
-void ConnectionSendThread::sendReliable(ConnectionCommand &c)
-{
- PeerHelper peer = m_connection->getPeerNoEx(c.peer_id);
- if (!peer)
- return;
-
- peer->PutReliableSendCommand(c,m_max_packet_size);
-}
-
-void ConnectionSendThread::sendToAll(u8 channelnum, SharedBuffer<u8> data)
-{
- std::list<u16> peerids = m_connection->getPeerIDs();
-
- for (std::list<u16>::iterator i = peerids.begin();
- i != peerids.end();
- ++i)
- {
- send(*i, channelnum, data);
- }
-}
-
-void ConnectionSendThread::sendToAllReliable(ConnectionCommand &c)
-{
- std::list<u16> peerids = m_connection->getPeerIDs();
-
- for (std::list<u16>::iterator i = peerids.begin();
- i != peerids.end();
- ++i)
- {
- PeerHelper peer = m_connection->getPeerNoEx(*i);
-
- if (!peer)
- continue;
-
- peer->PutReliableSendCommand(c,m_max_packet_size);
- }
-}
-
-void ConnectionSendThread::sendPackets(float dtime)
-{
- std::list<u16> peerIds = m_connection->getPeerIDs();
- std::list<u16> pendingDisconnect;
- std::map<u16,bool> pending_unreliable;
-
- for(std::list<u16>::iterator
- j = peerIds.begin();
- j != peerIds.end(); ++j)
- {
- PeerHelper peer = m_connection->getPeerNoEx(*j);
- //peer may have been removed
- if (!peer) {
- LOG(dout_con<<m_connection->getDesc()<< " Peer not found: peer_id=" << *j << std::endl);
- continue;
- }
- peer->m_increment_packets_remaining = m_iteration_packets_avaialble/m_connection->m_peers.size();
-
- if (dynamic_cast<UDPPeer*>(&peer) == 0)
- {
- continue;
- }
-
- if (dynamic_cast<UDPPeer*>(&peer)->m_pending_disconnect)
- {
- pendingDisconnect.push_back(*j);
- }
-
- PROFILE(std::stringstream peerIdentifier);
- PROFILE(peerIdentifier << "sendPackets[" << m_connection->getDesc() << ";" << *j << ";RELIABLE]");
- PROFILE(ScopeProfiler peerprofiler(g_profiler, peerIdentifier.str(), SPT_AVG));
-
- LOG(dout_con<<m_connection->getDesc()
- << " Handle per peer queues: peer_id=" << *j
- << " packet quota: " << peer->m_increment_packets_remaining << std::endl);
- // first send queued reliable packets for all peers (if possible)
- for (unsigned int i=0; i < CHANNEL_COUNT; i++)
- {
- u16 next_to_ack = 0;
- dynamic_cast<UDPPeer*>(&peer)->channels[i].outgoing_reliables_sent.getFirstSeqnum(next_to_ack);
- u16 next_to_receive = 0;
- dynamic_cast<UDPPeer*>(&peer)->channels[i].incoming_reliables.getFirstSeqnum(next_to_receive);
-
- LOG(dout_con<<m_connection->getDesc()<< "\t channel: "
- << i << ", peer quota:"
- << peer->m_increment_packets_remaining
- << std::endl
- << "\t\t\treliables on wire: "
- << dynamic_cast<UDPPeer*>(&peer)->channels[i].outgoing_reliables_sent.size()
- << ", waiting for ack for " << next_to_ack
- << std::endl
- << "\t\t\tincoming_reliables: "
- << dynamic_cast<UDPPeer*>(&peer)->channels[i].incoming_reliables.size()
- << ", next reliable packet: "
- << dynamic_cast<UDPPeer*>(&peer)->channels[i].readNextIncomingSeqNum()
- << ", next queued: " << next_to_receive
- << std::endl
- << "\t\t\treliables queued : "
- << dynamic_cast<UDPPeer*>(&peer)->channels[i].queued_reliables.size()
- << std::endl
- << "\t\t\tqueued commands : "
- << dynamic_cast<UDPPeer*>(&peer)->channels[i].queued_commands.size()
- << std::endl);
-
- while ((dynamic_cast<UDPPeer*>(&peer)->channels[i].queued_reliables.size() > 0) &&
- (dynamic_cast<UDPPeer*>(&peer)->channels[i].outgoing_reliables_sent.size()
- < dynamic_cast<UDPPeer*>(&peer)->channels[i].getWindowSize())&&
- (peer->m_increment_packets_remaining > 0))
- {
- BufferedPacket p = dynamic_cast<UDPPeer*>(&peer)->channels[i].queued_reliables.front();
- dynamic_cast<UDPPeer*>(&peer)->channels[i].queued_reliables.pop();
- Channel* channel = &(dynamic_cast<UDPPeer*>(&peer)->channels[i]);
- LOG(dout_con<<m_connection->getDesc()
- <<" INFO: sending a queued reliable packet "
- <<" channel: " << i
- <<", seqnum: " << readU16(&p.data[BASE_HEADER_SIZE+1])
- << std::endl);
- sendAsPacketReliable(p,channel);
- peer->m_increment_packets_remaining--;
- }
- }
- }
-
- if (m_outgoing_queue.size())
- {
- LOG(dout_con<<m_connection->getDesc()
- << " Handle non reliable queue ("
- << m_outgoing_queue.size() << " pkts)" << std::endl);
- }
-
- unsigned int initial_queuesize = m_outgoing_queue.size();
- /* send non reliable packets*/
- for(unsigned int i=0;i < initial_queuesize;i++) {
- OutgoingPacket packet = m_outgoing_queue.front();
- m_outgoing_queue.pop();
-
- if (packet.reliable)
- continue;
-
- PeerHelper peer = m_connection->getPeerNoEx(packet.peer_id);
- if (!peer) {
- LOG(dout_con<<m_connection->getDesc()
- <<" Outgoing queue: peer_id="<<packet.peer_id
- << ">>>NOT<<< found on sending packet"
- << ", channel " << (packet.channelnum % 0xFF)
- << ", size: " << packet.data.getSize() <<std::endl);
- continue;
- }
- /* send acks immediately */
- else if (packet.ack)
- {
- rawSendAsPacket(packet.peer_id, packet.channelnum,
- packet.data, packet.reliable);
- peer->m_increment_packets_remaining =
- MYMIN(0,peer->m_increment_packets_remaining--);
- }
- else if (
- ( peer->m_increment_packets_remaining > 0) ||
- (stopRequested())) {
- rawSendAsPacket(packet.peer_id, packet.channelnum,
- packet.data, packet.reliable);
- peer->m_increment_packets_remaining--;
- }
- else {
- m_outgoing_queue.push(packet);
- pending_unreliable[packet.peer_id] = true;
- }
- }
-
- for(std::list<u16>::iterator
- k = pendingDisconnect.begin();
- k != pendingDisconnect.end(); ++k)
- {
- if (!pending_unreliable[*k])
- {
- m_connection->deletePeer(*k,false);
- }
- }
-}
-
-void ConnectionSendThread::sendAsPacket(u16 peer_id, u8 channelnum,
- SharedBuffer<u8> data, bool ack)
-{
- OutgoingPacket packet(peer_id, channelnum, data, false, ack);
- m_outgoing_queue.push(packet);
-}
-
-ConnectionReceiveThread::ConnectionReceiveThread(unsigned int max_packet_size) :
- Thread("ConnectionReceive"),
- m_connection(NULL)
-{
-}
-
-void * ConnectionReceiveThread::run()
-{
- assert(m_connection);
-
- LOG(dout_con<<m_connection->getDesc()
- <<"ConnectionReceive thread started"<<std::endl);
-
- PROFILE(std::stringstream ThreadIdentifier);
- PROFILE(ThreadIdentifier << "ConnectionReceive: [" << m_connection->getDesc() << "]");
-
-#ifdef DEBUG_CONNECTION_KBPS
- u32 curtime = porting::getTimeMs();
- u32 lasttime = curtime;
- float debug_print_timer = 0.0;
-#endif
-
- while(!stopRequested()) {
- BEGIN_DEBUG_EXCEPTION_HANDLER
- PROFILE(ScopeProfiler sp(g_profiler, ThreadIdentifier.str(), SPT_AVG));
-
-#ifdef DEBUG_CONNECTION_KBPS
- lasttime = curtime;
- curtime = porting::getTimeMs();
- float dtime = CALC_DTIME(lasttime,curtime);
-#endif
-
- /* receive packets */
- receive();
-
-#ifdef DEBUG_CONNECTION_KBPS
- debug_print_timer += dtime;
- if (debug_print_timer > 20.0) {
- debug_print_timer -= 20.0;
-
- std::list<u16> peerids = m_connection->getPeerIDs();
-
- for (std::list<u16>::iterator i = peerids.begin();
- i != peerids.end();
- i++)
- {
- PeerHelper peer = m_connection->getPeerNoEx(*i);
- if (!peer)
- continue;
-
- float peer_current = 0.0;
- float peer_loss = 0.0;
- float avg_rate = 0.0;
- float avg_loss = 0.0;
-
- for(u16 j=0; j<CHANNEL_COUNT; j++)
- {
- peer_current +=peer->channels[j].getCurrentDownloadRateKB();
- peer_loss += peer->channels[j].getCurrentLossRateKB();
- avg_rate += peer->channels[j].getAvgDownloadRateKB();
- avg_loss += peer->channels[j].getAvgLossRateKB();
- }
-
- std::stringstream output;
- output << std::fixed << std::setprecision(1);
- output << "OUT to Peer " << *i << " RATES (good / loss) " << std::endl;
- output << "\tcurrent (sum): " << peer_current << "kb/s "<< peer_loss << "kb/s" << std::endl;
- output << "\taverage (sum): " << avg_rate << "kb/s "<< avg_loss << "kb/s" << std::endl;
- output << std::setfill(' ');
- for(u16 j=0; j<CHANNEL_COUNT; j++)
- {
- output << "\tcha " << j << ":"
- << " CUR: " << std::setw(6) << peer->channels[j].getCurrentDownloadRateKB() <<"kb/s"
- << " AVG: " << std::setw(6) << peer->channels[j].getAvgDownloadRateKB() <<"kb/s"
- << " MAX: " << std::setw(6) << peer->channels[j].getMaxDownloadRateKB() <<"kb/s"
- << " /"
- << " CUR: " << std::setw(6) << peer->channels[j].getCurrentLossRateKB() <<"kb/s"
- << " AVG: " << std::setw(6) << peer->channels[j].getAvgLossRateKB() <<"kb/s"
- << " MAX: " << std::setw(6) << peer->channels[j].getMaxLossRateKB() <<"kb/s"
- << " / WS: " << peer->channels[j].getWindowSize()
- << std::endl;
- }
-
- fprintf(stderr,"%s\n",output.str().c_str());
- }
- }
-#endif
- END_DEBUG_EXCEPTION_HANDLER(errorstream);
- }
-
- PROFILE(g_profiler->remove(ThreadIdentifier.str()));
- return NULL;
-}
-
-// Receive packets from the network and buffers and create ConnectionEvents
-void ConnectionReceiveThread::receive()
-{
- // use IPv6 minimum allowed MTU as receive buffer size as this is
- // theoretical reliable upper boundary of a udp packet for all IPv6 enabled
- // infrastructure
- unsigned int packet_maxsize = 1500;
- SharedBuffer<u8> packetdata(packet_maxsize);
-
- bool packet_queued = true;
-
- unsigned int loop_count = 0;
-
- /* first of all read packets from socket */
- /* check for incoming data available */
- while( (loop_count < 10) &&
- (m_connection->m_udpSocket.WaitData(50))) {
- loop_count++;
- try {
- if (packet_queued) {
- bool data_left = true;
- u16 peer_id;
- SharedBuffer<u8> resultdata;
- while(data_left) {
- try {
- data_left = getFromBuffers(peer_id, resultdata);
- if (data_left) {
- ConnectionEvent e;
- e.dataReceived(peer_id, resultdata);
- m_connection->putEvent(e);
- }
- }
- catch(ProcessedSilentlyException &e) {
- /* try reading again */
- }
- }
- packet_queued = false;
- }
-
- Address sender;
- s32 received_size = m_connection->m_udpSocket.Receive(sender, *packetdata, packet_maxsize);
-
- if ((received_size < BASE_HEADER_SIZE) ||
- (readU32(&packetdata[0]) != m_connection->GetProtocolID()))
- {
- LOG(derr_con<<m_connection->getDesc()
- <<"Receive(): Invalid incoming packet, "
- <<"size: " << received_size
- <<", protocol: "
- << ((received_size >= 4) ? readU32(&packetdata[0]) : -1)
- << std::endl);
- continue;
- }
-
- u16 peer_id = readPeerId(*packetdata);
- u8 channelnum = readChannel(*packetdata);
-
- if (channelnum > CHANNEL_COUNT-1) {
- LOG(derr_con<<m_connection->getDesc()
- <<"Receive(): Invalid channel "<<channelnum<<std::endl);
- throw InvalidIncomingDataException("Channel doesn't exist");
- }
-
- /* preserve original peer_id for later usage */
- u16 packet_peer_id = peer_id;
-
- /* Try to identify peer by sender address (may happen on join) */
- if (peer_id == PEER_ID_INEXISTENT) {
- peer_id = m_connection->lookupPeer(sender);
- }
-
- /* The peer was not found in our lists. Add it. */
- if (peer_id == PEER_ID_INEXISTENT) {
- peer_id = m_connection->createPeer(sender, MTP_MINETEST_RELIABLE_UDP, 0);
- }
-
- PeerHelper peer = m_connection->getPeerNoEx(peer_id);
-
- if (!peer) {
- LOG(dout_con<<m_connection->getDesc()
- <<" got packet from unknown peer_id: "
- <<peer_id<<" Ignoring."<<std::endl);
- continue;
- }
-
- // Validate peer address
-
- Address peer_address;
-
- if (peer->getAddress(MTP_UDP, peer_address)) {
- if (peer_address != sender) {
- LOG(derr_con<<m_connection->getDesc()
- <<m_connection->getDesc()
- <<" Peer "<<peer_id<<" sending from different address."
- " Ignoring."<<std::endl);
- continue;
- }
- }
- else {
-
- bool invalid_address = true;
- if (invalid_address) {
- LOG(derr_con<<m_connection->getDesc()
- <<m_connection->getDesc()
- <<" Peer "<<peer_id<<" unknown."
- " Ignoring."<<std::endl);
- continue;
- }
- }
-
-
- /* mark peer as seen with id */
- if (!(packet_peer_id == PEER_ID_INEXISTENT))
- peer->setSentWithID();
-
- peer->ResetTimeout();
-
- Channel *channel = 0;
-
- if (dynamic_cast<UDPPeer*>(&peer) != 0)
- {
- channel = &(dynamic_cast<UDPPeer*>(&peer)->channels[channelnum]);
- }
-
- if (channel != 0) {
- channel->UpdateBytesReceived(received_size);
- }
-
- // Throw the received packet to channel->processPacket()
-
- // Make a new SharedBuffer from the data without the base headers
- SharedBuffer<u8> strippeddata(received_size - BASE_HEADER_SIZE);
- memcpy(*strippeddata, &packetdata[BASE_HEADER_SIZE],
- strippeddata.getSize());
-
- try{
- // Process it (the result is some data with no headers made by us)
- SharedBuffer<u8> resultdata = processPacket
- (channel, strippeddata, peer_id, channelnum, false);
-
- LOG(dout_con<<m_connection->getDesc()
- <<" ProcessPacket from peer_id: " << peer_id
- << ",channel: " << (channelnum & 0xFF) << ", returned "
- << resultdata.getSize() << " bytes" <<std::endl);
-
- ConnectionEvent e;
- e.dataReceived(peer_id, resultdata);
- m_connection->putEvent(e);
- }
- catch(ProcessedSilentlyException &e) {
- }
- catch(ProcessedQueued &e) {
- packet_queued = true;
- }
- }
- catch(InvalidIncomingDataException &e) {
- }
- catch(ProcessedSilentlyException &e) {
- }
- }
-}
-
-bool ConnectionReceiveThread::getFromBuffers(u16 &peer_id, SharedBuffer<u8> &dst)
-{
- std::list<u16> peerids = m_connection->getPeerIDs();
-
- for(std::list<u16>::iterator j = peerids.begin();
- j != peerids.end(); ++j)
- {
- PeerHelper peer = m_connection->getPeerNoEx(*j);
- if (!peer)
- continue;
-
- if (dynamic_cast<UDPPeer*>(&peer) == 0)
- continue;
-
- for(u16 i=0; i<CHANNEL_COUNT; i++)
- {
- Channel *channel = &(dynamic_cast<UDPPeer*>(&peer))->channels[i];
-
- if (checkIncomingBuffers(channel, peer_id, dst)) {
- return true;
- }
- }
- }
- return false;
-}
-
-bool ConnectionReceiveThread::checkIncomingBuffers(Channel *channel,
- u16 &peer_id, SharedBuffer<u8> &dst)
-{
- u16 firstseqnum = 0;
- if (channel->incoming_reliables.getFirstSeqnum(firstseqnum))
- {
- if (firstseqnum == channel->readNextIncomingSeqNum())
- {
- BufferedPacket p = channel->incoming_reliables.popFirst();
- peer_id = readPeerId(*p.data);
- u8 channelnum = readChannel(*p.data);
- u16 seqnum = readU16(&p.data[BASE_HEADER_SIZE+1]);
-
- LOG(dout_con<<m_connection->getDesc()
- <<"UNBUFFERING TYPE_RELIABLE"
- <<" seqnum="<<seqnum
- <<" peer_id="<<peer_id
- <<" channel="<<((int)channelnum&0xff)
- <<std::endl);
-
- channel->incNextIncomingSeqNum();
-
- u32 headers_size = BASE_HEADER_SIZE + RELIABLE_HEADER_SIZE;
- // Get out the inside packet and re-process it
- SharedBuffer<u8> payload(p.data.getSize() - headers_size);
- memcpy(*payload, &p.data[headers_size], payload.getSize());
-
- dst = processPacket(channel, payload, peer_id, channelnum, true);
- return true;
- }
- }
- return false;
-}
-
-SharedBuffer<u8> ConnectionReceiveThread::processPacket(Channel *channel,
- SharedBuffer<u8> packetdata, u16 peer_id, u8 channelnum, bool reliable)
-{
- PeerHelper peer = m_connection->getPeerNoEx(peer_id);
-
- if (!peer) {
- errorstream << "Peer not found (possible timeout)" << std::endl;
- throw ProcessedSilentlyException("Peer not found (possible timeout)");
- }
-
- if (packetdata.getSize() < 1)
- throw InvalidIncomingDataException("packetdata.getSize() < 1");
-
- u8 type = readU8(&(packetdata[0]));
-
- if (MAX_UDP_PEERS <= 65535 && peer_id >= MAX_UDP_PEERS) {
- std::string errmsg = "Invalid peer_id=" + itos(peer_id);
- errorstream << errmsg << std::endl;
- throw InvalidIncomingDataException(errmsg.c_str());
- }
-
- if (type == TYPE_CONTROL)
- {
- if (packetdata.getSize() < 2)
- throw InvalidIncomingDataException("packetdata.getSize() < 2");
-
- u8 controltype = readU8(&(packetdata[1]));
-
- if (controltype == CONTROLTYPE_ACK)
- {
- assert(channel != NULL);
-
- if (packetdata.getSize() < 4) {
- throw InvalidIncomingDataException(
- "packetdata.getSize() < 4 (ACK header size)");
- }
-
- u16 seqnum = readU16(&packetdata[2]);
- LOG(dout_con<<m_connection->getDesc()
- <<" [ CONTROLTYPE_ACK: channelnum="
- <<((int)channelnum&0xff)<<", peer_id="<<peer_id
- <<", seqnum="<<seqnum<< " ]"<<std::endl);
-
- try{
- BufferedPacket p =
- channel->outgoing_reliables_sent.popSeqnum(seqnum);
-
- // only calculate rtt from straight sent packets
- if (p.resend_count == 0) {
- // Get round trip time
- unsigned int current_time = porting::getTimeMs();
-
- // a overflow is quite unlikely but as it'd result in major
- // rtt miscalculation we handle it here
- if (current_time > p.absolute_send_time)
- {
- float rtt = (current_time - p.absolute_send_time) / 1000.0;
-
- // Let peer calculate stuff according to it
- // (avg_rtt and resend_timeout)
- dynamic_cast<UDPPeer*>(&peer)->reportRTT(rtt);
- }
- else if (p.totaltime > 0)
- {
- float rtt = p.totaltime;
-
- // Let peer calculate stuff according to it
- // (avg_rtt and resend_timeout)
- dynamic_cast<UDPPeer*>(&peer)->reportRTT(rtt);
- }
- }
- //put bytes for max bandwidth calculation
- channel->UpdateBytesSent(p.data.getSize(),1);
- if (channel->outgoing_reliables_sent.size() == 0)
- {
- m_connection->TriggerSend();
- }
- }
- catch(NotFoundException &e) {
- LOG(derr_con<<m_connection->getDesc()
- <<"WARNING: ACKed packet not "
- "in outgoing queue"
- <<std::endl);
- channel->UpdatePacketTooLateCounter();
- }
- throw ProcessedSilentlyException("Got an ACK");
- }
- else if (controltype == CONTROLTYPE_SET_PEER_ID) {
- // Got a packet to set our peer id
- if (packetdata.getSize() < 4)
- throw InvalidIncomingDataException
- ("packetdata.getSize() < 4 (SET_PEER_ID header size)");
- u16 peer_id_new = readU16(&packetdata[2]);
- LOG(dout_con<<m_connection->getDesc()
- <<"Got new peer id: "<<peer_id_new<<"... "<<std::endl);
-
- if (m_connection->GetPeerID() != PEER_ID_INEXISTENT)
- {
- LOG(derr_con<<m_connection->getDesc()
- <<"WARNING: Not changing"
- " existing peer id."<<std::endl);
- }
- else
- {
- LOG(dout_con<<m_connection->getDesc()<<"changing own peer id"<<std::endl);
- m_connection->SetPeerID(peer_id_new);
- }
-
- ConnectionCommand cmd;
-
- SharedBuffer<u8> reply(2);
- writeU8(&reply[0], TYPE_CONTROL);
- writeU8(&reply[1], CONTROLTYPE_ENABLE_BIG_SEND_WINDOW);
- cmd.disableLegacy(PEER_ID_SERVER,reply);
- m_connection->putCommand(cmd);
-
- throw ProcessedSilentlyException("Got a SET_PEER_ID");
- }
- else if (controltype == CONTROLTYPE_PING)
- {
- // Just ignore it, the incoming data already reset
- // the timeout counter
- LOG(dout_con<<m_connection->getDesc()<<"PING"<<std::endl);
- throw ProcessedSilentlyException("Got a PING");
- }
- else if (controltype == CONTROLTYPE_DISCO)
- {
- // Just ignore it, the incoming data already reset
- // the timeout counter
- LOG(dout_con<<m_connection->getDesc()
- <<"DISCO: Removing peer "<<(peer_id)<<std::endl);
-
- if (m_connection->deletePeer(peer_id, false) == false)
- {
- derr_con<<m_connection->getDesc()
- <<"DISCO: Peer not found"<<std::endl;
- }
-
- throw ProcessedSilentlyException("Got a DISCO");
- }
- else if (controltype == CONTROLTYPE_ENABLE_BIG_SEND_WINDOW)
- {
- dynamic_cast<UDPPeer*>(&peer)->setNonLegacyPeer();
- throw ProcessedSilentlyException("Got non legacy control");
- }
- else{
- LOG(derr_con<<m_connection->getDesc()
- <<"INVALID TYPE_CONTROL: invalid controltype="
- <<((int)controltype&0xff)<<std::endl);
- throw InvalidIncomingDataException("Invalid control type");
- }
- }
- else if (type == TYPE_ORIGINAL)
- {
- if (packetdata.getSize() <= ORIGINAL_HEADER_SIZE)
- throw InvalidIncomingDataException
- ("packetdata.getSize() <= ORIGINAL_HEADER_SIZE");
- LOG(dout_con<<m_connection->getDesc()
- <<"RETURNING TYPE_ORIGINAL to user"
- <<std::endl);
- // Get the inside packet out and return it
- SharedBuffer<u8> payload(packetdata.getSize() - ORIGINAL_HEADER_SIZE);
- memcpy(*payload, &(packetdata[ORIGINAL_HEADER_SIZE]), payload.getSize());
- return payload;
- }
- else if (type == TYPE_SPLIT)
- {
- Address peer_address;
-
- if (peer->getAddress(MTP_UDP, peer_address)) {
-
- // We have to create a packet again for buffering
- // This isn't actually too bad an idea.
- BufferedPacket packet = makePacket(
- peer_address,
- packetdata,
- m_connection->GetProtocolID(),
- peer_id,
- channelnum);
-
- // Buffer the packet
- SharedBuffer<u8> data =
- peer->addSpiltPacket(channelnum,packet,reliable);
-
- if (data.getSize() != 0)
- {
- LOG(dout_con<<m_connection->getDesc()
- <<"RETURNING TYPE_SPLIT: Constructed full data, "
- <<"size="<<data.getSize()<<std::endl);
- return data;
- }
- LOG(dout_con<<m_connection->getDesc()<<"BUFFERED TYPE_SPLIT"<<std::endl);
- throw ProcessedSilentlyException("Buffered a split packet chunk");
- }
- else {
- //TODO throw some error
- }
- }
- else if (type == TYPE_RELIABLE)
- {
- assert(channel != NULL);
-
- // Recursive reliable packets not allowed
- if (reliable)
- throw InvalidIncomingDataException("Found nested reliable packets");
-
- if (packetdata.getSize() < RELIABLE_HEADER_SIZE)
- throw InvalidIncomingDataException
- ("packetdata.getSize() < RELIABLE_HEADER_SIZE");
-
- u16 seqnum = readU16(&packetdata[1]);
- bool is_future_packet = false;
- bool is_old_packet = false;
-
- /* packet is within our receive window send ack */
- if (seqnum_in_window(seqnum, channel->readNextIncomingSeqNum(),MAX_RELIABLE_WINDOW_SIZE))
- {
- m_connection->sendAck(peer_id,channelnum,seqnum);
- }
- else {
- is_future_packet = seqnum_higher(seqnum, channel->readNextIncomingSeqNum());
- is_old_packet = seqnum_higher(channel->readNextIncomingSeqNum(), seqnum);
-
-
- /* packet is not within receive window, don't send ack. *
- * if this was a valid packet it's gonna be retransmitted */
- if (is_future_packet)
- {
- throw ProcessedSilentlyException("Received packet newer then expected, not sending ack");
- }
-
- /* seems like our ack was lost, send another one for a old packet */
- if (is_old_packet)
- {
- LOG(dout_con<<m_connection->getDesc()
- << "RE-SENDING ACK: peer_id: " << peer_id
- << ", channel: " << (channelnum&0xFF)
- << ", seqnum: " << seqnum << std::endl;)
- m_connection->sendAck(peer_id,channelnum,seqnum);
-
- // we already have this packet so this one was on wire at least
- // the current timeout
- // we don't know how long this packet was on wire don't do silly guessing
- // dynamic_cast<UDPPeer*>(&peer)->reportRTT(dynamic_cast<UDPPeer*>(&peer)->getResendTimeout());
-
- throw ProcessedSilentlyException("Retransmitting ack for old packet");
- }
- }
-
- if (seqnum != channel->readNextIncomingSeqNum())
- {
- Address peer_address;
-
- // this is a reliable packet so we have a udp address for sure
- peer->getAddress(MTP_MINETEST_RELIABLE_UDP, peer_address);
- // This one comes later, buffer it.
- // Actually we have to make a packet to buffer one.
- // Well, we have all the ingredients, so just do it.
- BufferedPacket packet = con::makePacket(
- peer_address,
- packetdata,
- m_connection->GetProtocolID(),
- peer_id,
- channelnum);
- try{
- channel->incoming_reliables.insert(packet,channel->readNextIncomingSeqNum());
-
- LOG(dout_con<<m_connection->getDesc()
- << "BUFFERING, TYPE_RELIABLE peer_id: " << peer_id
- << ", channel: " << (channelnum&0xFF)
- << ", seqnum: " << seqnum << std::endl;)
-
- throw ProcessedQueued("Buffered future reliable packet");
- }
- catch(AlreadyExistsException &e)
- {
- }
- catch(IncomingDataCorruption &e)
- {
- ConnectionCommand discon;
- discon.disconnect_peer(peer_id);
- m_connection->putCommand(discon);
-
- LOG(derr_con<<m_connection->getDesc()
- << "INVALID, TYPE_RELIABLE peer_id: " << peer_id
- << ", channel: " << (channelnum&0xFF)
- << ", seqnum: " << seqnum
- << "DROPPING CLIENT!" << std::endl;)
- }
- }
-
- /* we got a packet to process right now */
- LOG(dout_con<<m_connection->getDesc()
- << "RECURSIVE, TYPE_RELIABLE peer_id: " << peer_id
- << ", channel: " << (channelnum&0xFF)
- << ", seqnum: " << seqnum << std::endl;)
-
-
- /* check for resend case */
- u16 queued_seqnum = 0;
- if (channel->incoming_reliables.getFirstSeqnum(queued_seqnum))
- {
- if (queued_seqnum == seqnum)
- {
- BufferedPacket queued_packet = channel->incoming_reliables.popFirst();
- /** TODO find a way to verify the new against the old packet */
- }
- }
-
- channel->incNextIncomingSeqNum();
-
- // Get out the inside packet and re-process it
- SharedBuffer<u8> payload(packetdata.getSize() - RELIABLE_HEADER_SIZE);
- memcpy(*payload, &packetdata[RELIABLE_HEADER_SIZE], payload.getSize());
-
- return processPacket(channel, payload, peer_id, channelnum, true);
- }
- else
- {
- derr_con<<m_connection->getDesc()
- <<"Got invalid type="<<((int)type&0xff)<<std::endl;
- throw InvalidIncomingDataException("Invalid packet type");
- }
-
- // We should never get here.
- FATAL_ERROR("Invalid execution point");
-}
-
-/*
- Connection
-*/
-
-Connection::Connection(u32 protocol_id, u32 max_packet_size, float timeout,
- bool ipv6, PeerHandler *peerhandler) :
- m_udpSocket(ipv6),
- m_command_queue(),
- m_event_queue(),
- m_peer_id(0),
- m_protocol_id(protocol_id),
- m_sendThread(max_packet_size, timeout),
- m_receiveThread(max_packet_size),
- m_info_mutex(),
- m_bc_peerhandler(peerhandler),
- m_bc_receive_timeout(0),
- m_shutting_down(false),
- m_next_remote_peer_id(2)
-
-{
- m_udpSocket.setTimeoutMs(5);
-
- m_sendThread.setParent(this);
- m_receiveThread.setParent(this);
-
- m_sendThread.start();
- m_receiveThread.start();
-
-}
-
-
-Connection::~Connection()
-{
- m_shutting_down = true;
- // request threads to stop
- m_sendThread.stop();
- m_receiveThread.stop();
-
- //TODO for some unkonwn reason send/receive threads do not exit as they're
- // supposed to be but wait on peer timeout. To speed up shutdown we reduce
- // timeout to half a second.
- m_sendThread.setPeerTimeout(0.5);
-
- // wait for threads to finish
- m_sendThread.wait();
- m_receiveThread.wait();
-
- // Delete peers
- for(std::map<u16, Peer*>::iterator
- j = m_peers.begin();
- j != m_peers.end(); ++j)
- {
- delete j->second;
- }
-}
-
-/* Internal stuff */
-void Connection::putEvent(ConnectionEvent &e)
-{
- assert(e.type != CONNEVENT_NONE); // Pre-condition
- m_event_queue.push_back(e);
-}
-
-PeerHelper Connection::getPeer(u16 peer_id)
-{
- MutexAutoLock peerlock(m_peers_mutex);
- std::map<u16, Peer*>::iterator node = m_peers.find(peer_id);
-
- if (node == m_peers.end()) {
- throw PeerNotFoundException("GetPeer: Peer not found (possible timeout)");
- }
-
- // Error checking
- FATAL_ERROR_IF(node->second->id != peer_id, "Invalid peer id");
-
- return PeerHelper(node->second);
-}
-
-PeerHelper Connection::getPeerNoEx(u16 peer_id)
-{
- MutexAutoLock peerlock(m_peers_mutex);
- std::map<u16, Peer*>::iterator node = m_peers.find(peer_id);
-
- if (node == m_peers.end()) {
- return PeerHelper(NULL);
- }
-
- // Error checking
- FATAL_ERROR_IF(node->second->id != peer_id, "Invalid peer id");
-
- return PeerHelper(node->second);
-}
-
-/* find peer_id for address */
-u16 Connection::lookupPeer(Address& sender)
-{
- MutexAutoLock peerlock(m_peers_mutex);
- std::map<u16, Peer*>::iterator j;
- j = m_peers.begin();
- for(; j != m_peers.end(); ++j)
- {
- Peer *peer = j->second;
- if (peer->isActive())
- continue;
-
- Address tocheck;
-
- if ((peer->getAddress(MTP_MINETEST_RELIABLE_UDP, tocheck)) && (tocheck == sender))
- return peer->id;
-
- if ((peer->getAddress(MTP_UDP, tocheck)) && (tocheck == sender))
- return peer->id;
- }
-
- return PEER_ID_INEXISTENT;
-}
-
-std::list<Peer*> Connection::getPeers()
-{
- std::list<Peer*> list;
- for(std::map<u16, Peer*>::iterator j = m_peers.begin();
- j != m_peers.end(); ++j)
- {
- Peer *peer = j->second;
- list.push_back(peer);
- }
- return list;
-}
-
-bool Connection::deletePeer(u16 peer_id, bool timeout)
-{
- Peer *peer = 0;
-
- /* lock list as short as possible */
- {
- MutexAutoLock peerlock(m_peers_mutex);
- if (m_peers.find(peer_id) == m_peers.end())
- return false;
- peer = m_peers[peer_id];
- m_peers.erase(peer_id);
- m_peer_ids.remove(peer_id);
- }
-
- Address peer_address;
- //any peer has a primary address this never fails!
- peer->getAddress(MTP_PRIMARY, peer_address);
- // Create event
- ConnectionEvent e;
- e.peerRemoved(peer_id, timeout, peer_address);
- putEvent(e);
-
-
- peer->Drop();
- return true;
-}
-
-/* Interface */
-
-ConnectionEvent Connection::waitEvent(u32 timeout_ms)
-{
- try {
- return m_event_queue.pop_front(timeout_ms);
- } catch(ItemNotFoundException &ex) {
- ConnectionEvent e;
- e.type = CONNEVENT_NONE;
- return e;
- }
-}
-
-void Connection::putCommand(ConnectionCommand &c)
-{
- if (!m_shutting_down) {
- m_command_queue.push_back(c);
- m_sendThread.Trigger();
- }
-}
-
-void Connection::Serve(Address bind_addr)
-{
- ConnectionCommand c;
- c.serve(bind_addr);
- putCommand(c);
-}
-
-void Connection::Connect(Address address)
-{
- ConnectionCommand c;
- c.connect(address);
- putCommand(c);
-}
-
-bool Connection::Connected()
-{
- MutexAutoLock peerlock(m_peers_mutex);
-
- if (m_peers.size() != 1)
- return false;
-
- std::map<u16, Peer*>::iterator node = m_peers.find(PEER_ID_SERVER);
- if (node == m_peers.end())
- return false;
-
- if (m_peer_id == PEER_ID_INEXISTENT)
- return false;
-
- return true;
-}
+ return true;
+}
void Connection::Disconnect()
{
throw NoIncomingDataException("No incoming data");
}
-void Connection::Send(u16 peer_id, u8 channelnum,
- NetworkPacket* pkt, bool reliable)
+void Connection::Send(session_t peer_id, u8 channelnum,
+ NetworkPacket *pkt, bool reliable)
{
assert(channelnum < CHANNEL_COUNT); // Pre-condition
putCommand(c);
}
-Address Connection::GetPeerAddress(u16 peer_id)
+Address Connection::GetPeerAddress(session_t peer_id)
{
PeerHelper peer = getPeerNoEx(peer_id);
return peer_address;
}
-float Connection::getPeerStat(u16 peer_id, rtt_stat_type type)
+float Connection::getPeerStat(session_t peer_id, rtt_stat_type type)
{
PeerHelper peer = getPeerNoEx(peer_id);
if (!peer) return -1;
float retval = 0.0;
- for (u16 j=0; j<CHANNEL_COUNT; j++) {
+ for (Channel &channel : dynamic_cast<UDPPeer *>(&peer)->channels) {
switch(type) {
case CUR_DL_RATE:
- retval += dynamic_cast<UDPPeer*>(&peer)->channels[j].getCurrentDownloadRateKB();
+ retval += channel.getCurrentDownloadRateKB();
break;
case AVG_DL_RATE:
- retval += dynamic_cast<UDPPeer*>(&peer)->channels[j].getAvgDownloadRateKB();
+ retval += channel.getAvgDownloadRateKB();
break;
case CUR_INC_RATE:
- retval += dynamic_cast<UDPPeer*>(&peer)->channels[j].getCurrentIncomingRateKB();
+ retval += channel.getCurrentIncomingRateKB();
break;
case AVG_INC_RATE:
- retval += dynamic_cast<UDPPeer*>(&peer)->channels[j].getAvgIncomingRateKB();
+ retval += channel.getAvgIncomingRateKB();
break;
case AVG_LOSS_RATE:
- retval += dynamic_cast<UDPPeer*>(&peer)->channels[j].getAvgLossRateKB();
+ retval += channel.getAvgLossRateKB();
break;
case CUR_LOSS_RATE:
- retval += dynamic_cast<UDPPeer*>(&peer)->channels[j].getCurrentLossRateKB();
+ retval += channel.getCurrentLossRateKB();
break;
default:
FATAL_ERROR("Connection::getLocalStat Invalid stat type");
// Somebody wants to make a new connection
// Get a unique peer id (2 or higher)
- u16 peer_id_new = m_next_remote_peer_id;
+ session_t peer_id_new = m_next_remote_peer_id;
u16 overflow = MAX_UDP_PEERS;
/*
ConnectionCommand cmd;
SharedBuffer<u8> reply(4);
- writeU8(&reply[0], TYPE_CONTROL);
+ writeU8(&reply[0], PACKET_TYPE_CONTROL);
writeU8(&reply[1], CONTROLTYPE_SET_PEER_ID);
writeU16(&reply[2], peer_id_new);
cmd.createPeer(peer_id_new,reply);
m_info_mutex.unlock();
}
-void Connection::PrintInfo()
-{
- PrintInfo(dout_con);
-}
-
const std::string Connection::getDesc()
{
return std::string("con(")+
itos(m_udpSocket.GetHandle())+"/"+itos(m_peer_id)+")";
}
-void Connection::DisconnectPeer(u16 peer_id)
+void Connection::DisconnectPeer(session_t peer_id)
{
ConnectionCommand discon;
discon.disconnect_peer(peer_id);
putCommand(discon);
}
-void Connection::sendAck(u16 peer_id, u8 channelnum, u16 seqnum)
+void Connection::sendAck(session_t peer_id, u8 channelnum, u16 seqnum)
{
assert(channelnum < CHANNEL_COUNT); // Pre-condition
ConnectionCommand c;
SharedBuffer<u8> ack(4);
- writeU8(&ack[0], TYPE_CONTROL);
+ writeU8(&ack[0], PACKET_TYPE_CONTROL);
writeU8(&ack[1], CONTROLTYPE_ACK);
writeU16(&ack[2], seqnum);
c.ack(peer_id, channelnum, ack);
putCommand(c);
- m_sendThread.Trigger();
+ m_sendThread->Trigger();
}
UDPPeer* Connection::createServerPeer(Address& address)
projects / dragonfireclient.git / blobdiff