void ClientTCP()
{
TcpClient client;
Packet data;
data.SetByteOrder(CX_PACKET_BIG_ENDIAN);
if(!client.InitializeSocket(HOSTNAME, PORT))
{
cout << "Unable to connect to host " << HOSTNAME << endl;
return;
}
cout << "Initialized TCP Client Socket\n";
char key = 0;
while(key != 27)
{
if((key = GetChar()) > 0)
{
data.Clear(); // Clear packet and encode data.
data.Write(key);
client.Send(data); // Send data (could send character array also if desired
/* Alternative way to send:
client.Send(&key, 1); // Send buffer/array.
*/
data.Clear();
if(client.Recv(data, 50, 0))
{
cout << *data.Ptr() << endl;
}
//cout << key;
}
}
}
////////////////////////////////////////////////////////////////////////////////////
///
/// \brief If the IsLargeDataSet method returns true, then this method is used
/// to convert message payload data into a multi-packet stream
/// according to rules defined by the JAUS standards documents.
///
/// This method should only be overloaded if your message contains data
/// larger than Header::MaxSize - Header::MinSize (e.g. image data) and you wish
/// to optimize how data is written. By default, this method calls the
/// WriteMessageBody method to generate a single large byte array, which is then
/// broken up into a Packet::List for the transport layer.
///
/// \param[out] stream Multi-packet stream containing serialized message
/// following rules of large data sets.
/// \param[out] streamHeaders Headers for packet in the stream.
/// \param[in] maxPayloadSize This is the maximum packet size including
/// payload, does not include transport, General
/// Transport Header, or Message Code (USHORT).
/// \param[in] transportHeader Additional transport header data to precede
/// the general transport header of each packet.
/// \param[in] startingSequenceNumber Sequence number to use for packets.
/// \param[in] broadcastFlags Values to use to signify if message should be
/// sent using any broadcast options (e.g.
/// multicast). 0 = no options, 1 = local broadcast,
/// 2 = global broadcast.
///
/// \return FAILURE on error, otherwise number of packets written.
///
////////////////////////////////////////////////////////////////////////////////////
int Message::WriteLargeDataSet(Packet::List& stream,
Header::List& streamHeaders,
const UShort maxPayloadSize,
const Packet* transportHeader,
const UShort startingSequenceNumber,
const Byte broadcastFlags) const
{
Header header;
header.mDestinationID = mDestinationID;
header.mSourceID = mSourceID;
header.mPriorityFlag = mPriority;
header.mBroadcastFlag = broadcastFlags;
stream.clear();
streamHeaders.clear();
Packet* temp = ((Packet *)(&mStreamPayload));
temp->Clear();
if(IsLargeDataSet() && WriteMessageBody(*temp) >= 0)
{
LargeDataSet::CreateLargeDataSet(header,
mMessageCode,
*temp,
stream,
streamHeaders,
transportHeader,
maxPayloadSize,
startingSequenceNumber);
return (int)stream.size();
}
return FAILURE;
}
void MulticastClientUDP()
{
UdpClient client;
IP4Address::List hosts;
client.GetHostAddresses(hosts);
cout << "IP Address for Host Machine\n";
for(int i = 0; i < (int)hosts.size(); i++ )
{
cout << hosts[i].mString << endl;
}
Packet data;
data.SetByteOrder(CX_PACKET_BIG_ENDIAN);
if(!client.InitializeMulticastSocket(MULTICAST_GROUP, PORT, 1))
{
cout << "Unable to connect to host " << HOSTNAME << endl;
return;
}
cout << "Initialized UDP Client Socket on port " << PORT << endl;
char key = 0;
while(key != 27)
{
if((key = GetChar()) > 0)
{
data.Write(key);
cout << key;
client.Send(data); // Send data (could send character array also if desired
data.Clear(); // Clear packet and encode data.
/* Alternative way to send:
client.Send(&key, 1); // Send buffer/array.
*/
}
}
}
Socket::Status TcpSocket::Receive(Packet& packet)
{
// First clear the variables to fill
packet.Clear();
// We start by getting the size of the incoming packet
Uint32 packetSize = 0;
std::size_t received = 0;
if (myPendingPacket.SizeReceived < sizeof(myPendingPacket.Size))
{
// Loop until we've received the entire size of the packet
// (even a 4 bytes variable may be received in more than one call)
while (myPendingPacket.SizeReceived < sizeof(myPendingPacket.Size))
{
char* data = reinterpret_cast<char*>(&myPendingPacket.Size) + myPendingPacket.SizeReceived;
Status status = Receive(data, sizeof(myPendingPacket.Size) - myPendingPacket.SizeReceived, received);
myPendingPacket.SizeReceived += received;
if (status != Done)
return status;
}
// The packet size has been fully received
packetSize = ntohl(myPendingPacket.Size);
}
else
{
// The packet size has already been received in a previous call
packetSize = ntohl(myPendingPacket.Size);
}
// Loop until we receive all the packet data
char buffer[1024];
while (myPendingPacket.Data.size() < packetSize)
{
// Receive a chunk of data
std::size_t sizeToGet = std::min(static_cast<std::size_t>(packetSize - myPendingPacket.Data.size()), sizeof(buffer));
Status status = Receive(buffer, sizeToGet, received);
if (status != Done)
return status;
// Append it into the packet
if (received > 0)
{
myPendingPacket.Data.resize(myPendingPacket.Data.size() + received);
char* begin = &myPendingPacket.Data[0] + myPendingPacket.Data.size() - received;
std::memcpy(begin, buffer, received);
}
}
// We have received all the packet data: we can copy it to the user packet
if (!myPendingPacket.Data.empty())
packet.OnReceive(&myPendingPacket.Data[0], myPendingPacket.Data.size());
// Clear the pending packet data
myPendingPacket = PendingPacket();
return Done;
}
////////////////////////////////////////////////////////////////////////////////////
///
/// \brief Reads a message out of the message box.
///
/// This method will read the first message that has not been read yet by this
/// instance of the MappedMessageBox.
///
/// \param[in] message Packet data to read from message box.
///
/// \return True on success, false on failure.
///
////////////////////////////////////////////////////////////////////////////////////
bool MappedMessageBox::ReadMessage(Packet& message) const
{
bool result = false;
message.Clear();
if(mMessageBox.IsOpen())
{
Header header;
if(mMessageBox.Lock() == 0)
{
return result;
}
header = ReadHeader();
if(header.mCount > 0 && header.mStartBytePos < header.mEndBytePos)
{
// Advance to the position of the next message we want to read.
unsigned int messageSize = 0;
unsigned int messagePosition = header.mStartBytePos;
// Read the message size in the box.
mMessageBox->Read(messageSize, messagePosition);
if(messageSize + MessageHeaderSize + messagePosition <= header.mEndBytePos)
{
if(mMessageBox->Read(message, messageSize, messagePosition + MessageHeaderSize) == (int)messageSize)
{
(*( (unsigned *)(&mMessagesRead) ))++;
// Advance the start byte position in the array.
header.mStartBytePos = messagePosition + MessageHeaderSize + messageSize;
// Decrease the number of messages in the box.
header.mCount--;
result = true;
}
}
if(messageSize + MessageHeaderSize > mMessageBox->Length())
{
assert("Corrupted Shared Memory Message Box" && 0);
}
}
// Reset position values.
if(header.mCount == 0)
{
header.mStartBytePos = header.mEndBytePos = Header::Size;
}
// Update the read time (shows we are actively checking for messages).
header.mReadTimeMs = GetTimeMs();
// Save updated header data.
WriteHeader(header);
// Release critical section.
mMessageBox.Unlock();
}
return result;
}
////////////////////////////////////////////////////////////
/// Receive a packet from the host (must be connected first).
/// This function will block if the socket is blocking
////////////////////////////////////////////////////////////
Socket::Status SocketTCP::Receive(Packet& PacketToReceive)
{
// We start by getting the size of the incoming packet
Uint32 PacketSize = 0;
std::size_t Received = 0;
if (myPendingPacketSize < 0)
{
Socket::Status Status = Receive(reinterpret_cast<char*>(&PacketSize), sizeof(PacketSize), Received);
if (Status != Socket::Done)
return Status;
PacketSize = ntohl(PacketSize);
}
else
{
// There is a pending packet : we already know its size
PacketSize = myPendingPacketSize;
}
// Then loop until we receive all the packet data
char Buffer[1024];
while (myPendingPacket.size() < PacketSize)
{
// Receive a chunk of data
std::size_t SizeToGet = std::min(static_cast<std::size_t>(PacketSize - myPendingPacket.size()), sizeof(Buffer));
Socket::Status Status = Receive(Buffer, SizeToGet, Received);
if (Status != Socket::Done)
{
// We must save the size of the pending packet until we can receive its content
if (Status == Socket::NotReady)
myPendingPacketSize = PacketSize;
return Status;
}
// Append it into the packet
if (Received > 0)
{
myPendingPacket.resize(myPendingPacket.size() + Received);
char* Begin = &myPendingPacket[0] + myPendingPacket.size() - Received;
memcpy(Begin, Buffer, Received);
}
}
// We have received all the datas : we can copy it to the user packet, and clear our internal packet
PacketToReceive.Clear();
if (!myPendingPacket.empty())
PacketToReceive.OnReceive(&myPendingPacket[0], myPendingPacket.size());
myPendingPacket.clear();
myPendingPacketSize = -1;
return Socket::Done;
}
////////////////////////////////////////////////////////////
/// Receive a packet from the host (must be connected first).
/// This function will block if the socket is blocking
////////////////////////////////////////////////////////////
Socket::Status SocketTCP::Receive(Packet& PacketToReceive)
{
// We start by getting the size of the incoming packet
Uint32 PacketSize = 0;
std::size_t Received = 0;
if (myPendingPacketSize < 0)
{
Socket::Status Status = Receive(reinterpret_cast<char*>(&PacketSize), sizeof(PacketSize), Received);
if (Status != Socket::Done)
return Status;
PacketSize = ntohl(PacketSize);
}
else
{
// There is a pending packet : we already know its size
PacketSize = myPendingPacketSize;
}
// Clear the user packet
PacketToReceive.Clear();
// Then loop until we receive all the packet data
char Buffer[1024];
while (myPendingPacket.GetDataSize() < PacketSize)
{
// Receive a chunk of data
Uint32 SizeToGet = std::min(PacketSize - myPendingPacket.GetDataSize(), static_cast<Uint32>(sizeof(Buffer)));
Socket::Status Status = Receive(Buffer, SizeToGet, Received);
if (Status != Socket::Done)
{
// We must save the size of the pending packet until we can receive its content
if (Status == Socket::NotReady)
myPendingPacketSize = PacketSize;
return Status;
}
// Append it into the packet
myPendingPacket.Append(Buffer, Received);
}
// We have received all the datas : we can copy it to the user packet, and clear our internal packet
PacketToReceive = myPendingPacket;
myPendingPacket.Clear();
myPendingPacketSize = -1;
// Let the packet do custom stuff after data reception
PacketToReceive.OnReceive();
return Socket::Done;
}
////////////////////////////////////////////////////////////////////////////////////
///
/// \brief Thread used by the primary server (the active socket) to receive
/// UDP datagrams and share to clients.
///
////////////////////////////////////////////////////////////////////////////////////
void UdpSharedServer::UdpSocketThread(void* udpSharedServer)
{
UdpSharedServer* server = (UdpSharedServer*)udpSharedServer;
Packet udpMessage;
IP4Address sourceAddress;
unsigned short sourcePort = 0;
#ifdef WIN32
unsigned int loopCounter = 0;
#endif
while(server &&
(server->mUdpSocketThread.QuitThreadFlag() == false ||
server->mQuitServerFlag == false))
{
// Try and read a new incomming message.
udpMessage.Clear(false);
sourcePort = 0;
if(server->mpSocket->Recv(udpMessage, 5000, 100, &sourceAddress, &sourcePort) > 0)
{
// Add the IP address to the end of the message for shared memory clients.
udpMessage.Write(sourceAddress.mData, 4, udpMessage.Length());
udpMessage.Write(sourcePort, udpMessage.Length());
// Send to non-primary UdpSharedServer instances.
server->mpMessageServer->SendToAllClients(udpMessage);
// Now process the data internally. This will add to the
// queue of received messages, and generate callbacks.
UdpSharedServer::ProcessUdpMessage(udpMessage, server);
}
server->mDelayMutex.Lock();
if(server->mUpdateDelayMs == 0)
{
#ifdef WIN32
// Only sleep every N loops
if( loopCounter++ == 250)
{
loopCounter = 0;
SleepMs(1);
}
#else
usleep(500);
#endif
}
else
{
CxUtils::SleepMs(server->mUpdateDelayMs);
}
server->mDelayMutex.Unlock();
}
server->mConnectedFlag = false;
}
void Connection::Update() {
while (true) {
this->RecvMutex.lock();
if (this->ToRecv.Count == 0) {
this->RecvMutex.unlock();
break;
}
byte* buff = this->ToRecv.RemoveAt(0);
this->RecvMutex.unlock();
Packet p;
p.InBuffer = buff + 4;
p.InSize = *(int*)buff;
int pid;
switch (this->PIDType) {
case ConnectionPacketIDType::Byte: pid = p.ReadByte(); break;
case ConnectionPacketIDType::Short: pid = p.ReadShort(); break;
case ConnectionPacketIDType::Int: pid = p.ReadInt(); break;
}
if (pid < this->CallbacksSize && pid >= 0 && this->Callbacks[pid] != nullptr) {
bool ret = this->Callbacks[pid](this->m_pTag, p);
if (!ret) {
this->Disconnect();
this->RecvMutex.lock();
while (this->ToRecv.Count > 0) delete this->ToRecv.RemoveAt(this->ToRecv.Count - 1);
this->RecvMutex.unlock();
}
if (p.InPos != p.InSize) {
Utilities::Print("[col=%s]WARNING: Packet 0x%.4X(%d) was only read till %d, while the size is %d", Color::Orange.ToString().c_str(), pid, pid, p.InPos, p.InSize);
}
} else {
Utilities::Print("[col=%s]Unknown packet: 0x%.4X(%d), size %d", Color::Red.ToString().c_str(), pid, pid, p.InSize);
}
this->LastReceivedPacket = time(nullptr);
p.InBuffer = nullptr;
p.InSize = 0;
p.Clear();
delete[] buff;
}
}
////////////////////////////////////////////////////////////
/// Receive a packet.
/// This function will block if the socket is blocking
////////////////////////////////////////////////////////////
Socket::Status SocketUDP::Receive(Packet& PacketToReceive, IPAddress& Address, unsigned short& Port)
{
// We start by getting the size of the incoming packet
Uint32 PacketSize = 0;
std::size_t Received = 0;
if (myPendingPacketSize < 0)
{
// Loop until we've received the entire size of the packet
// (even a 4 bytes variable may be received in more than one call)
while (myPendingHeaderSize < sizeof(myPendingHeader))
{
char* Data = reinterpret_cast<char*>(&myPendingHeader) + myPendingHeaderSize;
Socket::Status Status = Receive(Data, sizeof(myPendingHeader) - myPendingHeaderSize, Received, Address, Port);
myPendingHeaderSize += Received;
if (Status != Socket::Done)
return Status;
}
PacketSize = ntohl(myPendingHeader);
myPendingHeaderSize = 0;
}
else
{
// There is a pending packet : we already know its size
PacketSize = myPendingPacketSize;
}
// Use another address instance for receiving the packet data ;
// chunks of data coming from a different sender will be discarded (and lost...)
IPAddress Sender;
unsigned short SenderPort;
// Then loop until we receive all the packet data
char Buffer[1024];
while (myPendingPacket.size() < PacketSize)
{
// Receive a chunk of data
std::size_t SizeToGet = std::min(static_cast<std::size_t>(PacketSize - myPendingPacket.size()), sizeof(Buffer));
Socket::Status Status = Receive(Buffer, SizeToGet, Received, Sender, SenderPort);
if (Status != Socket::Done)
{
// We must save the size of the pending packet until we can receive its content
if (Status == Socket::NotReady)
myPendingPacketSize = PacketSize;
return Status;
}
// Append it into the packet
if ((Sender == Address) && (SenderPort == Port) && (Received > 0))
{
myPendingPacket.resize(myPendingPacket.size() + Received);
char* Begin = &myPendingPacket[0] + myPendingPacket.size() - Received;
memcpy(Begin, Buffer, Received);
}
}
// We have received all the datas : we can copy it to the user packet, and clear our internal packet
PacketToReceive.Clear();
if (!myPendingPacket.empty())
PacketToReceive.OnReceive(&myPendingPacket[0], myPendingPacket.size());
myPendingPacket.clear();
myPendingPacketSize = -1;
return Socket::Done;
}
void SceneryManager::SendPageRequest(const SceneryPageRequest& request, std::list<PacketManager::PACKET_PAIR>& outgoingPackets)
{
TimeObject to("SceneryManager::SendPageRequest");
STRINGLIST queryRows;
Packet data;
int wpos = 0;
char idBuf[32];
GetThread("SceneryManager::HandlePageRequests[page]");
SceneryPage *page = GetOrCreatePage(request.zone, request.x, request.y);
if(page == NULL)
{
g_Log.AddMessageFormat("[ERROR] SendPageRequest retrieved NULL page");
wpos = PrepExt_QueryResponseNull(prepBuf, request.queryID);
data.Assign(prepBuf, wpos);
outgoingPackets.push_back(PacketManager::PACKET_PAIR(request.socket, data));
ReleaseThread();
return;
}
SceneryPage::SCENERY_IT it;
for(it = page->mSceneryList.begin(); it != page->mSceneryList.end(); ++it)
{
//Build the list of scenery ID strings to form the response to the scenery.list query.
//No need to save row data unless the query is required.
if(request.skipQuery == false)
{
sprintf(idBuf, "%d", it->second.ID);
queryRows.push_back(idBuf);
}
wpos += PrepExt_UpdateScenery(&prepBuf[wpos], &it->second);
if(wpos > Global::MAX_SEND_CHUNK_SIZE)
{
data.Assign(prepBuf, wpos);
outgoingPackets.push_back(PacketManager::PACKET_PAIR(request.socket, data));
wpos = 0;
}
}
if(wpos > 0)
{
data.Assign(prepBuf, wpos);
outgoingPackets.push_back(PacketManager::PACKET_PAIR(request.socket, data));
}
//Done accessing the scenery data itself, no need to hold the thread any longer.
//All the remaining stuff is using a resident list of query IDs to form into a response
//packet.
ReleaseThread();
//Now build the query response if the client has requested it.
if(request.skipQuery == true)
return;
//Reset the packet buffer and data.
wpos = 0;
data.Clear();
//Get the size of the response
int sizeReq = 6; //Query ID (4 bytes) + row count (2 bytes)
for(size_t s = 0; s < queryRows.size(); s++)
{
sizeReq++; //1 string per row
sizeReq += PutStringReq(queryRows[s].c_str());
}
wpos += PutByte(&prepBuf[wpos], 1); //_handleQueryResultMsg
wpos += PutShort(&prepBuf[wpos], sizeReq); //Message size
wpos += PutInteger(&prepBuf[wpos], request.queryID);
wpos += PutShort(&prepBuf[wpos], queryRows.size());
for(size_t s = 0; s < queryRows.size(); s++)
{
wpos += PutByte(&prepBuf[wpos], 1);
wpos += PutStringUTF(&prepBuf[wpos], queryRows[s].c_str());
if(wpos > Global::MAX_SEND_CHUNK_SIZE)
{
data.Append(prepBuf, wpos);
wpos = 0;
}
}
if(wpos > 0)
data.Append(prepBuf, wpos);
outgoingPackets.push_back(PacketManager::PACKET_PAIR(request.socket, data));
}
////////////////////////////////////////////////////////////////////////////////////
///
/// \brief Writes message contents to packet for the transport layer to
/// send. Begins writing from current write position in packet.
///
/// Message contents are written to the packet following the JAUS standard.
///
/// \param[out] packet Packet to write header and payload data to.
/// \param[out] header Packet transport header data.
/// \param[in] transportHeader Optional parameter for transport header data to
/// write before the general transport header.
/// \param[in] clearPacket If true, packet contents are cleared before
/// writing takes place.
/// \param[in] startingSequenceNumber Sequence number to use for packets.
/// \param[in] broadcastFlag Values to use to signify if message should be
/// sent using any broadcast options (e.g.
/// multicast). 0 = no options, 1 = local broadcast,
/// 2 = global broadcast.
///
/// \return FAILURE on error, otherwise number of bytes written.
///
////////////////////////////////////////////////////////////////////////////////////
int Message::Write(Packet& packet,
Header& header,
const Packet* transportHeader,
const bool clearPacket,
const UShort startingSequenceNumber,
const Byte broadcastFlag) const
{
int total = 0;
// Build JAUS header data.
header.mSourceID = mSourceID;
header.mDestinationID = mDestinationID;
header.mPriorityFlag = mPriority;
header.mControlFlag = Header::DataControl::Single;
header.mCompressionFlag = Header::Compression::None;
header.mSequenceNumber = startingSequenceNumber;
header.mBroadcastFlag = broadcastFlag;
// Clear out any previous message data.
if(clearPacket)
{
packet.Clear();
packet.Reserve(Header::MinSize + USHORT_SIZE + 1);
}
unsigned int writePos = packet.GetWritePos();
if(transportHeader && transportHeader->Length() > 0)
{
writePos += (unsigned int)packet.Write(*transportHeader);
}
// The first thing we must do is advance
// the write position to after the JAUS Header
// data. The header is not written first because
// we do not know how large the message body will
// be yet.
packet.SetLength(writePos + Header::PayloadOffset);
packet.SetWritePos(writePos + Header::PayloadOffset);
total += packet.Write(mMessageCode);
int payloadSize = 0;
if( (payloadSize = WriteMessageBody(packet)) >= 0)
{
total += payloadSize;
// Check for large data set.
if(total + Header::MinSize > Header::MaxPacketSize)
{
return FAILURE;
}
else
{
header.mSize = total + Header::MinSize;
packet.SetWritePos(writePos);
// Go back, and re-write the header since
// we now know the size of the message.
if(header.Write(packet))
{
// Set the write position to the end of message we just wrote.
packet.SetWritePos(writePos + header.mSize);
// Return the number of bytes written.
if(transportHeader)
{
return header.mSize + transportHeader->Length();
}
else
{
return header.mSize;
}
}
}
}
return FAILURE;
}
////////////////////////////////////////////////////////////////////////////////////
///
/// \brief Method for receiving UDP messages in a continuous loop.
///
////////////////////////////////////////////////////////////////////////////////////
void JUDP::ReceiveThread(void* args)
{
JUDP* transport = (JUDP*)args;
Packet udpMessage;
CxUtils::IP4Address sourceAddress;
unsigned short sourcePort = 0;
long int timeoutMs = 100;
#ifdef WIN32
int loopCounter = 0;
#endif
udpMessage.Reserve(5000);
Thread* thread = NULL;
bool primary = false;
if(transport->mPrimaryThreadCreatedFlag == false)
{
primary = true;
transport->mPrimaryThreadCreatedFlag = true;
thread = &transport->mPrimaryThread;
}
else
{
thread = &transport->mSecondaryThread;
}
while(transport &&
thread->QuitThreadFlag() == false &&
transport->mShutdownServiceFlag == false)
{
udpMessage.Clear(false);
sourcePort = 0;
if(primary)
{
if(transport->mInput.Recv(udpMessage,
5000,
timeoutMs,
&sourceAddress,
&sourcePort) > 0)
{
transport->ProcessUDP(udpMessage, sourceAddress, sourcePort);
}
}
else
{
if(transport->mMulticast.GetSourcePort() > 0 &&
transport->mMulticast.Recv(udpMessage,
5000,
timeoutMs,
&sourceAddress,
&sourcePort) > 0)
{
transport->ProcessUDP(udpMessage, sourceAddress, sourcePort);
}
}
if(transport->mShutdownServiceFlag)
{
break;
}
if(transport->mDelayTimeMs == 0)
{
#ifdef WIN32
// Only sleep every N loops
if( loopCounter++ == 250)
{
loopCounter = 0;
CxUtils::SleepMs(1);
}
#else
usleep(500);
#endif
}
else
{
CxUtils::SleepMs(transport->mDelayTimeMs);
}
}
//std::cout << "EXIT!\n";
}
