def handle_packet_from_outside(data):
logging.debug('--------------------------------------------------')
logging.debug('--------------------------------------------------')
logging.debug('got packet: %s' % pktstr(data))
pkt = Packet(data)
if pkt.is_tcp() and pkt.is_valid_tcp():
logging.debug('passing on tcp packet ...')
tcp_conn = server.handle_tcp(pkt)
if tcp_conn:
tcp_pts = tcp_conn.get_packets_to_send()
if tcp_pts:
for tcp, data in tcp_pts:
eth = pkt.get_reversed_eth()
ip = pkt.get_reversed_ip(new_ttl=64,
new_tlen=pkt.ip_hlen +
len(tcp) + len(data))
p = eth + ip + Packet.cksum_tcp_hdr(ip, tcp,
data) + data
logging.debug('sending packet: %s' % pktstr(p))
try:
raw_socket.send(p)
except socket.error:
logging.exception('failed to send packet')
sys.exit(-1)
else:
logging.debug('no packets to send back')
def send_packets(self):
"""Send any waiting packets"""
if self.intf and self.pkt:
for (_, tcp_conn) in self.http_server.connections.iteritems():
if tcp_conn and not tcp_conn.dead:
tcp_pts = tcp_conn.get_packets_to_send()
for tcp, data in tcp_pts:
eth = self.pkt.get_reversed_eth()
ip = self.pkt.get_reversed_ip(new_ttl=64, new_tlen=self.pkt.ip_hlen+len(tcp)+len(data))
pkt_out = eth + ip + Packet.cksum_tcp_hdr(ip, tcp, data) + data
logging.debug('%s sending packet from HTTP server: %s' % (self, pktstr(pkt_out)))
self.intf.link.send_to_other(self.intf, pkt_out)
def handle_http_request(self, intf, pkt):
"""Forward the received packet from an HTTP client to the web server."""
tcp_conn = self.http_server.handle_tcp(pkt)
if tcp_conn:
tcp_pts = tcp_conn.get_packets_to_send()
if tcp_pts:
for tcp, data in tcp_pts:
eth = pkt.get_reversed_eth()
ip = pkt.get_reversed_ip(new_ttl=64, new_tlen=pkt.ip_hlen+len(tcp)+len(data))
pkt_out = eth + ip + Packet.cksum_tcp_hdr(ip, tcp, data) + data
logging.debug('%s sending packet from HTTP server: %s' % (self, pktstr(pkt_out)))
intf.link.send_to_other(intf, pkt_out)
def handle_packet_from_outside(data):
logging.debug('--------------------------------------------------')
logging.debug('--------------------------------------------------')
logging.debug('got packet: %s' % pktstr(data))
pkt = Packet(data)
if pkt.is_tcp() and pkt.is_valid_tcp():
logging.debug('passing on tcp packet ...')
tcp_conn = server.handle_tcp(pkt)
if tcp_conn:
tcp_pts = tcp_conn.get_packets_to_send()
if tcp_pts:
for tcp, data in tcp_pts:
eth = pkt.get_reversed_eth()
ip = pkt.get_reversed_ip(new_ttl=64, new_tlen=pkt.ip_hlen+len(tcp)+len(data))
p = eth + ip + Packet.cksum_tcp_hdr(ip, tcp, data) + data
logging.debug('sending packet: %s' % pktstr(p))
try:
raw_socket.send(p)
except socket.error:
logging.exception('failed to send packet')
sys.exit(-1)
else:
logging.debug('no packets to send back')
