# Headers length
self.headers_size = 42 # 14B l2 + 20B ipv4 + 8B udp
+ # Required UDP keepalive value for T-Rex
+ self.udp_keepalive = 2000 # 2s (2,000 msec)
+
def define_profile(self):
"""Define profile to be used by advanced stateful traffic generator.
# client commands
prog_c = ASTFProgram(stream=False)
- prog_c.send_msg(self.udp_req) # size and fill not supported in v2.73
+ # set the keepalive timer for UDP flows to not close udp session
+ # immediately after packet exchange
+ prog_c.set_keepalive_msg(self.udp_keepalive)
+ # send REQ message
+ prog_c.send_msg(self.udp_req)
+ # receive RES message
prog_c.recv_msg(1)
# server commands
prog_s = ASTFProgram(stream=False)
+ # set the keepalive timer for UDP flows to not close udp session
+ # immediately after packet exchange
+ prog_c.set_keepalive_msg(self.udp_keepalive)
+ # receive REQ message
prog_s.recv_msg(1)
+ # send RES message
prog_s.send_msg(self.udp_res)
# ip generators