SAP Router

The following subsections show a graphical representation of the main protocol packets and how to generate them.

First we need to perform some setup to import the packet classes:

from pysap.SAPRouter import *
from IPython.display import display

SAP Router Admin packets

for command in router_adm_commands:
    p = SAPRouter(type=SAPRouter.SAPROUTER_ADMIN, adm_command=command)
    print(router_adm_commands[command])
    display(p.canvas_dump())

Information Request

New Route Table Request

Toggle Trace Request

Stop Request

Cancel Route Request

Dump Buffers Request

Flush Buffers Request

Soft Shutdown Request

Set Trace Peer

Clear Trace Peer

Trace Connection

Trace Connection

Hide Error Information Request

SAP Router Error Information / Control packets

for opcode in router_control_opcodes:
    p = SAPRouter(type=SAPRouter.SAPROUTER_CONTROL, opcode=opcode)
    if opcode in [70, 71]:
        p.snc_frame = ""
    print(router_control_opcodes[opcode])
    display(p.canvas_dump())

Error information

Version request

Version response

Send Handle (5)

Send Handle (6)

Send Handle (8)

SNC request

SNC handshake complete

SAP Router Route packet

router_string = [SAPRouterRouteHop(hostname="8.8.8.8", port=3299),
                 SAPRouterRouteHop(hostname="10.0.0.1", port=3200, password="S3cr3t")]
router_string_lens = list(map(len, map(str, router_string)))
p = SAPRouter(type=SAPRouter.SAPROUTER_ROUTE,
              route_entries=len(router_string),
              route_talk_mode=1,
              route_rest_nodes=1,
              route_length=sum(router_string_lens),
              route_offset=router_string_lens[0],
              route_string=router_string)
display(p.canvas_dump())
for x in router_string:
    display(x.canvas_dump())

SAP Router Pong packet

p = SAPRouter(type=SAPRouter.SAPROUTER_PONG)
p.canvas_dump()

SAP Router Error Text packet

p = SAPRouterError(error='connection refused', return_code='-94')
p.canvas_dump()

SAP Router Information response packets

p = SAPRouterInfoServer(pid=1234, ppid=1, port=3299, pport=3200)
display(p.canvas_dump())

p = SAPRouterInfoClients(clients=[SAPRouterInfoClient(id=1, address='127.0.0.1', partner='10.0.0.1', service='3200')])
display(p.canvas_dump())
display(p.clients[0].canvas_dump())