Client Server Networking Problem

[pattie]

Sorry about posting this thread in the wrong place.

Here is the code I am using:

SERVER SERVER SERVER SERVER:

import viz
import viznet
viz.go()
viz.clearcolor(.2,.2,.4)
view = viz.get(viz.MAIN_VIEWPOINT)
view.setPosition(70,45,-60)
view.lookat(0,0,10)
objectList = ['duck.wrl', 'logo.wrl', 'male.cfg', 'female.cfg' ]
maze = viz.add('tankmaze.wrl')
objects = {}
UPDATE = viznet.id('update')
CLIENT_DISCONNECTED = viznet.id('client_disconnected')
CHAT = viznet.id('chat')
viznet.server.start(port_in=14950, port_out = 14951)
def onStartClient(e):
print '** Client joined:', e.sender
viz.callback(viznet.CLIENT_CONNECT_EVENT, onStartClient)
def onStopClient(e):
print '** Client left:', e.sender
viznet.server.send(CLIENT_DISCONNECTED, client=e.sender)
objects[e.sender].remove() #Remove object from map
del objects[e.sender] #Delete user from array
viz.callback(viznet.CLIENT_DISCONNECT_EVENT, onStopClient)
def update(e):
try:
objects[e.sender].setPosition(e.pos)
objects[e.sender].rotate(e.ori)
except KeyError:
objects[e.sender] = viz.add(objectList[e.object],scale=
2,2,2],pos=e.pos,euler=e.ori)
objects[e.sender].tooltip = e.sender
viz.callback(UPDATE, update)

import viztip
tth = viztip.ToolTip()
tth.start()
tth.setDelay(0)

def updateChat(msg):
text.message('\n'.join(text.getMessage().split('\n ')[1:])+'\n'+msg)

text = viz.addText('\n\n\n\n', viz.SCREEN) # send 4 carriage returns to screen
text.alignment(viz.TEXT_LEFT_BOTTOM)
text.fontSize(25)
text.translate(0.05,0.08)

input = viz.addText('>_', viz.SCREEN) # Add Chat prompt
input.alignment(viz.TEXT_LEFT_BOTTOM)
input.fontSize(25)
input.translate(0.032,0.05)
input.visible(0) #Only visible when in type mode

def onChat(e):
updateChat(e.client+': '+e.chat)
viz.callback(CHAT,onChat)

talking = False
def onKeyDown(key):
global talking
if key == 'y' and not talking: # Start talking mode
talking = True
input.message('> _')
input.visible(1)
elif key == viz.KEY_ESCAPE and talking: # Exit talking mode
talking = False
input.visible(0)
return True
elif talking and key == viz.KEY_RETURN: # Send message
talking = False
viznet.server.send(CHAT,client='SERVER',chat=input .getMessage()[2:-1])
input.visible(0)
# Update display with our message
updateChat('SERVER'+': '+input.getMessage()[2:-1])
elif talking and key == viz.KEY_BACKSPACE: # Delete a character
if len(input.getMessage()) > 3:
input.message(input.getMessage()[:-2]+'_')
elif len(key) > 1: # Handle special keys
return False
elif talking and 32 <= ord(key) <= 126: # Input message
input.message(input.getMessage()[:-1]+key+'_')
viz.callback(viz.KEYDOWN_EVENT,onKeyDown,priority=-6)

CLIENT CLIENT CLIENT CLIENT

import viz
import viznet
import vizinfo
viz.go()
viz.clearcolor(.2,.2,.4)
maze = viz.add('tankmaze.wrl')
objects = {}
SEND_UPDATE_TIMER = 1
UPDATE = viznet.id('update')
CLIENT_DISCONNECTED = viznet.id('client_disconnected')
CHAT = viznet.id('chat')
SERVER_NAME=viz.input('Enter Server Name')
while not viznet.client.connect(SERVER_NAME,port_in=14951,po rt_out=14950):
if viz.ask('Could not connect to ' + SERVER_NAME + ' would you like to try another?'):
SERVER_NAME=viz.input('Enter Server Name')
else:
viz.quit()
break

objectList = ['duck.wrl','logo.wrl','male.cfg','female.cfg']
obj_choice=viz.choose('Connected. Select your character',objectList)

def mytimer(num):
if num == SEND_UPDATE_TIMER:
ori= viz.get(viz.HEAD_ORI)
pos = viz.get(viz.HEAD_POS)
viznet.client.sendAll(UPDATE,client=viz.getCompute rName
(),object=obj_choice,pos=pos,ori=ori)
viz.callback(viz.TIMER_EVENT, mytimer)
viz.starttimer(SEND_UPDATE_TIMER, .05, -1)

def update(e):
if e.client != viz.getComputerName():
try:
objects[e.client].setPosition(e.pos)
objects[e.client].rotate(e.ori)
except KeyError:
objects[e.client] = viz.add(objectList[e.object],scale=[2,2,2],pos=e.pos,euler=e.ori)
objects[e.client].tooltip = e.client
viz.callback(UPDATE,update)

def client_disconnected(e):
objects[e.client].remove()
del objects[e.client]
viz.callback(CLIENT_DISCONNECTED,client_disconnect ed)

def onStopServer(e):
print 'Disconnected from server'
viz.quit()
viz.callback(viznet.SERVER_DISCONNECT_EVENT,onStop Server)

import viztip
tth = viztip.ToolTip()
tth.start()
tth.setDelay(0)

def updateChat(msg):
text.message('\n'.join(text.getMessage().split('\n ')[1:])+'\n'+msg)

text = viz.addText('\n\n\n\n',viz.SCREEN)
text.alignment(viz.TEXT_LEFT_BOTTOM)
text.fontSize(25)
text.translate(.05,.08)

input = viz.addText('> _',viz.SCREEN)
input.fontSize(25)
input.translate(.032,.05)
input.visible(0)

def onChat(e):
updateChat(e.client+': '+e.chat)
viz.callback(CHAT,onChat)

talking = False
def onKeyDown(key):
global talking
if key == 'y' and not talking:
talking = True
input.message('> _')
input.visible(1)
elif key == viz.KEY_ESCAPE and talking:
talking = False
input.visible(0)
return True
elif talking and key == viz.KEY_RETURN:
talking = False
viznet.client.sendAll(CHAT,client=viz.getComputerN ame(),chat=input.getMessage()[2:-1])
input.visible(0)
elif talking and key == viz.KEY_BACKSPACE:
if len(input.getMessage()) > 3:
input.message(input.getMessage()[:-2]+'_')
elif len(key) > 1:
return False
elif talking and 32 <= ord(key) <= 126:
input.message(input.getMessage()[:-1]+key+'_')
viz.callback(viz.KEYDOWN_EVENT,onKeyDown,priority=-6)

[farshizzo]

Hi,

Can you repost the code using the special code tags?

[code]insert code here[/code]

This will preserve the indentation in the code.

[pattie]

No need for the chat management code, I experimented without it.

SERVER SERVER SERVER SERVER

import viz
import viznet
viz.go()
viz.clearcolor(.2,.2,.4)
view = viz.get(viz.MAIN_VIEWPOINT)
view.setPosition(70,45,-60)
view.lookat(0,0,10)

objectList = ['duck.wrl', 'logo.wrl', 'male.cfg', 'female.cfg' ] 
maze = viz.add('tankmaze.wrl')
objects = {}

UPDATE = viznet.id('update')
CLIENT_DISCONNECTED = viznet.id('client_disconnected')
CHAT = viznet.id('chat')
viznet.server.start(port_in=14950, port_out = 14951)
def onStartClient(e):
	print '** Client joined:', e.sender
viz.callback(viznet.CLIENT_CONNECT_EVENT, onStartClient)
def onStopClient(e):
	print '** Client left:', e.sender
	viznet.server.send(CLIENT_DISCONNECTED, client=e.sender)
	objects[e.sender].remove() #Remove object from map
	del objects[e.sender] #Delete user from array
viz.callback(viznet.CLIENT_DISCONNECT_EVENT, onStopClient)

def update(e):
	try:
		objects[e.sender].setPosition(e.pos)
		objects[e.sender].rotate(e.ori)
	except KeyError:
		objects[e.sender] = viz.add(objectList[e.object],scale=[2,2,2],pos=e.pos,euler=e.ori)
		objects[e.sender].tooltip = e.sender
viz.callback(UPDATE, update)

import viztip
tth = viztip.ToolTip()
tth.start()
tth.setDelay(0)

CLIENT CLIENT CLIENT CLIENT

import viz
import viznet
import vizinfo
viz.go()
viz.clearcolor(.2,.2,.4)
maze = viz.add('tankmaze.wrl')
objects = {}
SEND_UPDATE_TIMER = 1
UPDATE = viznet.id('update')
CLIENT_DISCONNECTED = viznet.id('client_disconnected')
CHAT = viznet.id('chat')
SERVER_NAME=viz.input('Enter Server Name')
while not viznet.client.connect(SERVER_NAME,port_in=14951,port_out=14950):
    if viz.ask('Could not connect to ' + SERVER_NAME + ' would you like to try another?'):
        SERVER_NAME=viz.input('Enter Server Name')
    else:
        viz.quit()
        break

objectList = ['duck.wrl','logo.wrl','male.cfg','female.cfg']
obj_choice=viz.choose('Connected. Select your character',objectList)

def mytimer(num): 
    if num == SEND_UPDATE_TIMER:
        ori= viz.get(viz.HEAD_ORI)
        pos = viz.get(viz.HEAD_POS)
        viznet.client.sendAll(UPDATE,client=viz.getComputerName(),object=obj_choice,pos=pos,ori=ori)
viz.callback(viz.TIMER_EVENT, mytimer)
viz.starttimer(SEND_UPDATE_TIMER, .05, -1)

def update(e):
    if e.client != viz.getComputerName():
        try:
            objects[e.client].setPosition(e.pos)
            objects[e.client].rotate(e.ori)
        except KeyError:
            objects[e.client] = viz.add(objectList[e.object],scale=[2,2,2],pos=e.pos,euler=e.ori)
            objects[e.client].tooltip = e.client
viz.callback(UPDATE,update)

#The client_disconnected function performs some simple cleanup when another client disconnects, 
#and the onStopServer function closes the client.
def client_disconnected(e):
    objects[e.client].remove()
    del objects[e.client]
viz.callback(CLIENT_DISCONNECTED,client_disconnected)

def onStopServer(e):
    print 'Disconnected from server'
    viz.quit()
viz.callback(viznet.SERVER_DISCONNECT_EVENT,onStopServer)

import viztip
tth = viztip.ToolTip()
tth.start()
tth.setDelay(0)

[farshizzo]

Hi,

I just tested your script here, running one server with two clients and it worked fine. You said that server to client communication does not work. Have you tried a simple viznet example that does not use sendAll, to make sure that this is not a problem with your network setup?

I've included a very basic viznet example. In this example, whenever a client presses the spacebar their background color should change. Also, the server will print out a message every time a client connects/disconnects. If this does not work then there might be a problem with your network setup.

SERVER SERVER SERVER SERVER

import viz
viz.go()

import viznet

#Create custom event IDs
CLIENT_KEYDOWN = viznet.id('ClientKeyDown')
SET_CLEAR_COLOR = viznet.id('SetClearColor')

#Start server
viznet.server.start()

colors = [viz.RED,viz.BLUE,viz.BLACK,viz.ORANGE,viz.YELLOW,viz.GREEN,viz.GRAY]
curColor = 0

#When client connects, send them current color
def onStartClient(e):
	viznet.server.sendClient(e.sender,SET_CLEAR_COLOR,color=colors[curColor])
	print '** Client joined:',e.sender
viz.callback(viznet.CLIENT_CONNECT_EVENT,onStartClient)

#Print out when client leaves
def onStopClient(e):
	print '** Client left:',e.sender
viz.callback(viznet.CLIENT_DISCONNECT_EVENT,onStopClient)

#When client presses space key, change color and notify all clients
def onKeydownClient(e):
	global curColor
	if e.keydown == ' ':
		curColor = (curColor + 1) % len(colors)
		viznet.server.send(SET_CLEAR_COLOR,color=colors[curColor])
viz.callback(CLIENT_KEYDOWN,onKeydownClient)

CLIENT CLIENT CLIENT CLIENT

import viz
viz.go()

import viznet

#Create custom event IDs
CLIENT_KEYDOWN = viznet.id('ClientKeyDown')
SET_CLEAR_COLOR = viznet.id('SetClearColor')

#Connect to server
viznet.client.connect(viz.input('Enter Server Name'))

#Send message to server when space key is pressed
vizact.onkeydown(' ',viznet.client.send,CLIENT_KEYDOWN,keydown=' ')

#Change color on server event
def onClearColorClient(e):
	viz.clearcolor(e.color)
viz.callback(SET_CLEAR_COLOR,onClearColorClient)

#Print out message if disconnected from server
def onStopClient(e):
	print '** Disconnected from server'
viz.callback(viznet.SERVER_DISCONNECT_EVENT,onStopClient)

[pattie]

If it works on your side, then it definitively is something with my network config.
I'll keep on playing around.

Thanks
Patrick

[iva]

Okay, this is a 6 years old post, but I have had the same problem already twice, so next time when I google for the solution, I will find this post. I don't know if this would solve OP's problem, but I had the same situation, communication worked from client to server, but server to client never worked. It turns out, if I use server's machine name instead of server's IP address, miraculously everything started to work.