def send_gre_nsh(self):
# create a raw socket
try:
s = socket.socket(
socket.AF_INET, socket.SOCK_RAW,
socket.IPPROTO_GRE) # set port to GRE encapsulation
except socket.error as msg:
print('Socket could not be created. Error Code : ' + str(msg[0]) +
' Message ' + msg[1])
sys.exit()
# Building client packet to send to SFF
packet = build_nsh_eth_header(self.encapsulate_header_values,
self.base_header_values,
self.ctx_header_values,
self.ethernet_values)
udp_inner_packet = build_udp_packet("172.20.33.195", "10.0.1.1", 10000,
self.dest_port,
"test".encode('utf-8'))
gre_nsh_ethernet_packet = packet + udp_inner_packet
logger.info("Sending %s packet to SFF: %s", self.encapsulate_type,
self.dest_addr)
logger.debug("Packet dump: %s",
binascii.hexlify(gre_nsh_ethernet_packet))
s.sendto(gre_nsh_ethernet_packet, (self.dest_addr, 0))
def connection_made(self, transport):
self.transport = transport
# Building client IP packet to send to SFF
packet = build_nsh_eth_header(self.encapsulate_header_values,
self.base_header_values,
self.ctx_header_values,
self.ethernet_values)
# VXLAN header is now built as part of nsh_eth header
# packet = build_vxlan_header(self.encapsulate_header_values,
# self.ethernet_values)
udp_inner_packet = build_udp_packet(self.inner_header.inner_src_ip,
self.inner_header.inner_dest_ip,
self.inner_header.inner_src_port,
self.inner_header.inner_dest_port,
"test".encode('utf-8'))
gpe_nsh_ethernet_packet = packet + udp_inner_packet
logger.debug("Ethernet dump: ",
binascii.hexlify(gpe_nsh_ethernet_packet))
logger.info("Sending %s packet to SFF: %s", self.encapsulate_type,
(self.remote_sff_ip, self.remote_sff_port))
# Send the packet
signal.signal(signal.SIGALRM, self.alarm_handler)
signal.alarm(5)
try:
self.transport.sendto(gpe_nsh_ethernet_packet,
(self.remote_sff_ip, self.remote_sff_port))
except socket.error as msg:
print('Failed to send packet. Error Code : ' + str(msg))
sys.exit()
def connection_made(self, transport):
self.transport = transport
# Building client IP packet to send to SFF
packet = build_nsh_eth_header(self.encapsulate_header_values,
self.base_header_values,
self.ctx_header_values,
self.ethernet_values)
# VXLAN header is now built as part of nsh_eth header
# packet = build_vxlan_header(self.encapsulate_header_values,
# self.ethernet_values)
udp_inner_packet = build_udp_packet(self.inner_header.inner_src_ip, self.inner_header.inner_dest_ip,
self.inner_header.inner_src_port,
self.inner_header.inner_dest_port, "test".encode('utf-8'))
gpe_nsh_ethernet_packet = packet + udp_inner_packet
logger.debug("Ethernet dump: ", binascii.hexlify(gpe_nsh_ethernet_packet))
logger.info("Sending %s packet to SFF: %s", self.encapsulate_type, (self.remote_sff_ip, self.remote_sff_port))
# Send the packet
signal.signal(signal.SIGALRM, self.alarm_handler)
signal.alarm(5)
try:
self.transport.sendto(gpe_nsh_ethernet_packet, (self.remote_sff_ip, self.remote_sff_port))
except socket.error as msg:
print('Failed to send packet. Error Code : ' + str(msg))
sys.exit()
def send_gre_nsh(self):
# create a raw socket
try:
s = socket.socket(socket.AF_INET, socket.SOCK_RAW, socket.IPPROTO_GRE) # set port to GRE encapsulation
except socket.error as msg:
print('Socket could not be created. Error Code : ' + str(msg[0]) + ' Message ' + msg[1])
sys.exit()
# Building client packet to send to SFF
packet = build_nsh_eth_header(self.encapsulate_header_values,
self.base_header_values,
self.ctx_header_values,
self.ethernet_values)
udp_inner_packet = build_udp_packet("172.20.33.195", "10.0.1.1", 10000, self.dest_port, "test".encode('utf-8'))
gre_nsh_ethernet_packet = packet + udp_inner_packet
logger.info("Sending %s packet to SFF: %s", self.encapsulate_type, self.dest_addr)
logger.debug("Packet dump: %s", binascii.hexlify(gre_nsh_ethernet_packet))
s.sendto(gre_nsh_ethernet_packet, (self.dest_addr, 0))