#!/usr/bin/env python
#
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import time
import wpan
from wpan import verify

#-----------------------------------------------------------------------------------------------------------------------
# Test description: Traffic between router and end-device (link-local and mesh-local IPv6 addresses)

test_name = __file__[:-3] if __file__.endswith('.py') else __file__
print '-' * 120
print 'Starting \'{}\''.format(test_name)

#-----------------------------------------------------------------------------------------------------------------------
# Creating `wpan.Nodes` instances

node1 = wpan.Node()
node2 = wpan.Node()

#-----------------------------------------------------------------------------------------------------------------------
# Init all nodes

wpan.Node.init_all_nodes()

#-----------------------------------------------------------------------------------------------------------------------
# Build network topology

# Two-node network (node1 leader/router, node2 end-device)

node1.form('test-PAN')
node2.join_node(node1, node_type=wpan.JOIN_TYPE_END_DEVICE)

verify(node2.get(wpan.WPAN_STATE) == wpan.STATE_ASSOCIATED)
verify(node2.get(wpan.WPAN_NAME) == node1.get(wpan.WPAN_NAME))
verify(node2.get(wpan.WPAN_PANID) == node1.get(wpan.WPAN_PANID))
verify(node2.get(wpan.WPAN_XPANID) == node1.get(wpan.WPAN_XPANID))

#-----------------------------------------------------------------------------------------------------------------------
# Test implementation

# Get the link local addresses
ll1 = node1.get(wpan.WPAN_IP6_LINK_LOCAL_ADDRESS)[1:-1]
ll2 = node2.get(wpan.WPAN_IP6_LINK_LOCAL_ADDRESS)[1:-1]

# Get the mesh-local addresses
ml1 = node1.get(wpan.WPAN_IP6_MESH_LOCAL_ADDRESS)[1:-1]
ml2 = node2.get(wpan.WPAN_IP6_MESH_LOCAL_ADDRESS)[1:-1]

NUM_MSGS = 3
MSG_LENS = [40, 100, 400, 800, 1000]
PORT = 1234

# all src and dst configuration (link-local and mesh-local)
for src,dst in [ (ll1, ll2), (ll1, ml2), (ml1, ll2), (ml1, ml2) ]:

    for msg_length in MSG_LENS:
        sender = node1.prepare_tx(src, dst, msg_length, NUM_MSGS)
        recver = node2.prepare_rx(sender)

        wpan.Node.perform_async_tx_rx()

        verify(sender.was_successful)
        verify(recver.was_successful)

    # Send and receive at the same time on same port number

    s1 = node1.prepare_tx((src, PORT), (dst, PORT), 'Hi there!', NUM_MSGS)
    r1 = node2.prepare_rx(s1)
    s2 = node2.prepare_tx((dst, PORT), (src, PORT), 'Hello back to you!', NUM_MSGS)
    r2 = node1.prepare_rx(s2)

    wpan.Node.perform_async_tx_rx()

    verify(s1.was_successful and r1.was_successful)
    verify(s2.was_successful and r2.was_successful)

#-----------------------------------------------------------------------------------------------------------------------
# Test finished

print '\'{}\' passed.'.format(test_name)