def run(self):
# Try to connect to an incoming tcp socket using its socket descriptor
tcpSocket = QTcpSocket()
if not tcpSocket.setSocketDescriptor(self.socketDescriptor):
FreeCAD.Console.PrintError("Socket not accepted.\n")
return
FreeCAD.Console.PrintLog("Socket accepted.\n")
# Wait for an incoming message
if not tcpSocket.waitForReadyRead(msecs=WAIT_TIME_MS):
FreeCAD.Console.PrintError("No request send.\n")
return
# Make an input data stream
instr = QDataStream(tcpSocket)
instr.setVersion(QDataStream.Qt_4_0)
# Try to read the message size
if self.blockSize == 0:
if tcpSocket.bytesAvailable() < 2:
FreeCAD.Console.PrintError("Received message "
+ "has too few bytes.\n")
return
self.blockSize = instr.readUInt16()
# Check message is sent complete
if tcpSocket.bytesAvailable() < self.blockSize:
FreeCAD.Console.PrintError("Received message has less bytes "
+ "then it's supposed to.\n")
return
# Read message and inform about it
cmd = instr.readRawData(self.blockSize).decode("UTF-8")
FreeCAD.Console.PrintLog("CommandServer received> "
+ cmd + "\n")
# Try to execute the message string and prepare a response
try:
exec(cmd)
except Exception as e:
FreeCAD.Console.PrintError("Executing external command failed:"
+ str(e) + "\n")
message = "Command failed - " + str(e)
else:
FreeCAD.Console.PrintLog("Executing external command succeeded!\n")
message = COMMAND_EXECUTED_CONFIRMATION_MESSAGE
# Prepare the data block to send back and inform about it
FreeCAD.Console.PrintLog("CommandServer sending> " + message + " \n")
block = QByteArray(
len(message.encode("UTF-8")).to_bytes(2, byteorder='big')
+ message.encode("UTF-8"))
outstr = QDataStream(block, QIODevice.WriteOnly)
outstr.setVersion(QDataStream.Qt_4_0)
# Send the block, disconnect from the socket and terminate the QThread
tcpSocket.write(block)
tcpSocket.disconnectFromHost()
tcpSocket.waitForDisconnected()
def run(self):
# Try to connect to an incomming tcp socket using its socket descriptor
tcpSocket = QTcpSocket()
if not tcpSocket.setSocketDescriptor(self.socketDescriptor):
FreeCAD.Console.PrintError("Socket not accepted.\n")
return
# Wait for an incomming message
if not tcpSocket.waitForReadyRead(msecs=WAIT_TIME_MS):
FreeCAD.Console.PrintError("No request send.\n")
return
# Make an input data stream
instr = QDataStream(tcpSocket)
instr.setVersion(QDataStream.Qt_4_0)
# Try to read the message size
if self.blockSize == 0:
if tcpSocket.bytesAvailable() < 2:
return
self.blockSize = instr.readUInt16()
# Check message is sent complete
if tcpSocket.bytesAvailable() < self.blockSize:
return
# Read message and inform about it
instr = instr.readString()
FreeCAD.Console.PrintLog("CommandServer received> " + str(instr) +
"\n")
# Try to execute the message string and prepare a response
try:
exec(str(instr))
except Exception as e:
FreeCAD.Console.PrintError("Executing external command failed:" +
str(e) + "\n")
message = "Command failed - " + str(e)
else:
FreeCAD.Console.PrintLog("Executing external command succeded!\n")
message = COMMAND_EXECUTED_CONFIRMATION_MESSAGE
# Prepare the data block to send back and inform about it
FreeCAD.Console.PrintLog("CommandServer sending> " + message + " \n")
block = QByteArray()
outstr = QDataStream(block, QIODevice.WriteOnly)
outstr.setVersion(QDataStream.Qt_4_0)
outstr.writeUInt16(0)
outstr.writeQString(message)
outstr.device().seek(0)
outstr.writeUInt16(block.size() - 2)
# Send the block, disconnect from the socket and terminate the QThread
tcpSocket.write(block)
tcpSocket.disconnectFromHost()
tcpSocket.waitForDisconnected()
def run(self):
tcpSocket = QTcpSocket()
if not tcpSocket.setSocketDescriptor(self.socketDescriptor):
self.error.emit(tcpSocket.error())
return
block = QByteArray()
outstr = QDataStream(block, QIODevice.WriteOnly)
outstr.setVersion(QDataStream.Qt_4_0)
outstr.writeUInt16(0)
outstr.writeQString(self.text)
outstr.device().seek(0)
outstr.writeUInt16(block.size() - 2)
tcpSocket.write(block)
tcpSocket.disconnectFromHost()
tcpSocket.waitForDisconnected()
def run(self):
tcpSocket = QTcpSocket()
if not tcpSocket.setSocketDescriptor(self.socketDescriptor):
self.error.emit(tcpSocket.error())
return
block = QByteArray()
outstr = QDataStream(block, QIODevice.WriteOnly)
outstr.setVersion(QDataStream.Qt_4_0)
outstr.writeUInt16(0)
outstr.writeQString(self.text)
outstr.device().seek(0)
outstr.writeUInt16(block.size() - 2)
tcpSocket.write(block)
tcpSocket.disconnectFromHost()
tcpSocket.waitForDisconnected()
class CrossingNetwork(QObject):
# Změna stavu; signál pro stavový řádek
stateChanged = Signal(str)
def __init__(self, model, *args, **kwargs):
super().__init__(*args, **kwargs)
self.model = model
# Inicializace socketu
self.socket = QTcpSocket(self)
self.socket.readyRead.connect(self.read)
self.socket.stateChanged.connect(self.socketStateChanged)
# Příprava pro čtení dat
self.readBuffer = QByteArray()
self.textCodec = QTextCodec.codecForName("UTF-8")
@Slot()
def socketConnect(self):
# Nejdřív se odpoj, pokud už spojení běží
self.socket.abort()
# A znovu se připoj
self.socket.connectToHost(
"ksp.mff.cuni.cz", 48888)
@Slot()
def socketDisconnect(self):
# Odpoj se
self.socket.disconnectFromHost()
# Vyprázdni model
self.model.flush()
@Slot(SocketState)
def socketStateChanged(self, state):
if state == SocketState.ConnectedState:
# Připojeni? Pozdravíme server.
self.socket.write(self.textCodec.fromUnicode("HELLO\n"))
# A informujeme připojené posluchače o změně stavu
self.stateChanged.emit(str(state).split(".")[-1].split("State")[0])
def read(self):
# Přečteme všechno, co jsme dostali
while self.socket.bytesAvailable() > 0:
self.readBuffer += \
self.socket.read(128)
# Rozdělíme na řádky
lines = self.readBuffer.split("\n")
# Zbytek uložíme na příště
self.readBuffer = lines.pop()
# Zpracujeme řádky, které dorazily
for l in lines:
stripped = self.textCodec.toUnicode(l.data()).rstrip()
args = stripped.split(" ")
travellerType = args.pop(0)
argmap = dict(map(
lambda x: x.split("="), args))
if travellerType == "CAR":
self.addTraveller(Car(**argmap))
elif travellerType == "PEDESTRIAN":
self.addTraveller(
Pedestrian(**argmap))
def addTraveller(self, traveller):
# Uložíme si cestovatele
self.model.add(traveller)
# Nechť cestovatel vstoupí do oblasti
traveller.start(self)
def sendBack(self, traveller):
# Vrátíme cestovatele serveru
text = str(traveller) + "\n"
self.socket.write(self.textCodec.fromUnicode(text))
self.model.remove(traveller)
def run(self):
"""
Thread's functionality method.
The starting point for the thread. After calling start(), the newly created
thread calls this function. This function then tries to make QTcpSocket.
It waits `WAIT_TIME_MS` for an incoming message. If message is received
it checks its a whole message using blockSize sent in the first word as
an UINT16 number. If a whole message is received, the thread tries to execute
the message string and sends back an appropriate response. The response is
*Command failed - "error string"* if the execution failed, or *Command
executed successfully* otherwise. Then the thread is terminated.
"""
# Try to connect to an incoming tcp socket using its socket descriptor
tcpSocket = QTcpSocket()
if not tcpSocket.setSocketDescriptor(self.socketDescriptor):
FreeCAD.Console.PrintError("Socket not accepted.\n")
return
FreeCAD.Console.PrintLog("Socket accepted.\n")
# Wait for an incoming message
if not tcpSocket.waitForReadyRead(msecs=WAIT_TIME_MS):
FreeCAD.Console.PrintError("No request send.\n")
return
# Make an input data stream
instr = QDataStream(tcpSocket)
instr.setVersion(QDataStream.Qt_4_0)
# Try to read the message size
if self.blockSize == 0:
if tcpSocket.bytesAvailable() < 2:
FreeCAD.Console.PrintError("Received message " +
"has too few bytes.\n")
return
self.blockSize = instr.readUInt16()
# Check message is sent complete
if tcpSocket.bytesAvailable() < self.blockSize:
FreeCAD.Console.PrintError("Received message has less bytes " +
"then it's supposed to.\n")
return
# Read message and inform about it
cmd = instr.readRawData(self.blockSize).decode("UTF-8")
FreeCAD.Console.PrintLog("CommandServer received> " + cmd + "\n")
# Try to execute the message string and prepare a response
try:
exec(cmd)
except Exception as e:
FreeCAD.Console.PrintError("Executing external command failed:" +
str(e) + "\n")
message = "Command failed - " + str(e)
else:
FreeCAD.Console.PrintLog("Executing external command succeeded!\n")
message = COMMAND_EXECUTED_CONFIRMATION_MESSAGE
# Prepare the data block to send back and inform about it
FreeCAD.Console.PrintLog("CommandServer sending> " + message + " \n")
block = QByteArray(
len(message.encode("UTF-8")).to_bytes(2, byteorder='big') +
message.encode("UTF-8"))
outstr = QDataStream(block, QIODevice.WriteOnly)
outstr.setVersion(QDataStream.Qt_4_0)
# Send the block, disconnect from the socket and terminate the QThread
tcpSocket.write(block)
tcpSocket.disconnectFromHost()
tcpSocket.waitForDisconnected()