Hi,
Here is a sample script that sends and receives data over a socket. Press spacebar to send a message. When a message is received it will be printed out.
Code:
import viz
viz.go()
import socket
#The maximum amount of data to receive at a time
MAX_DATA_SIZE = 1024
#The port to send/receive data on
PORT = 4999
#Get the name of this computer
COMPUTER_NAME = socket.gethostname()
#Get the IP address of this computer
COMPUTER_IP_ADDRESS = socket.gethostbyname(COMPUTER_NAME)
#Create a socket to send data over
OutSocket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
OutSocket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
#Create a socket to receive data from
InSocket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
InSocket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
InSocket.bind(('', PORT))
InSocket.setblocking(0)
def SendData(data):
OutSocket.sendto(data,(COMPUTER_IP_ADDRESS,PORT))
def ReceiveData():
try:
return InSocket.recv(MAX_DATA_SIZE)
except:
pass
def onkeydown(key):
if key == ' ':
#Send data over the socket
SendData('hello there')
viz.callback(viz.KEYDOWN_EVENT,onkeydown)
def ontimer(num):
#Try to receive data from socket
data = ReceiveData()
if data:
print 'Received Message:',data
viz.callback(viz.TIMER_EVENT,ontimer)
viz.starttimer(0,0,viz.FOREVER)