cup.net package

Subpackages

• cup.net.async package
  • Submodules
  • cup.net.async.common module
  • cup.net.async.conn module
  • cup.net.async.msg module
  • cup.net.async.msgcenter module
  • Module contents

Submodules

cup.net.route module

author:YangGuang yangguang07@baidu.com create_date:2014 last_date:2014 descrition:host route info related module

class cup.net.route.RouteInfo

Bases: object

Handler of Route Info for Linux system, for ipv4 only.

E.g.

from cup.net import route
ri = route.RouteInfo()
print json.dumps(ri.get_route_by_ip('10.32.19.92'), indent=1)
print json.dumps(ri.get_routes(), indent=1)

Return

{
 "Use": "0",
 "Iface": "eth1",
 "Metric": "0",
 "Destination": "10.0.0.0",
 "Mask": "255.0.0.0",
 "RefCnt": "0",
 "MTU": "0",
 "Window": "0",
 "Gateway": "10.226.71.1",
 "Flags": "0003",
 "IRTT": "0"
}
[
 {
  "Use": "0",
  "Iface": "eth1",
  "Metric": "0",
  "Destination": "10.226.71.0",
  "Mask": "255.255.255.0",
  "RefCnt": "0",
  "MTU": "0",
  "Window": "0",
  "Gateway": "0.0.0.0",
  "Flags": "0001",
  "IRTT": "0"
 },
 {
  "Use": "0",
  "Iface": "eth1",
  "Metric": "0",
  "Destination": "169.254.0.0",
  "Mask": "255.255.0.0",
  "RefCnt": "0",
  "MTU": "0",
  "Window": "0",
  "Gateway": "0.0.0.0",
  "Flags": "0001",
  "IRTT": "0"
 },
 {
  "Use": "0",
  "Iface": "eth1",
  "Metric": "0",
  "Destination": "192.168.0.0",
  "Mask": "255.255.0.0",
  "RefCnt": "0",
  "MTU": "0",
  "Window": "0",
  "Gateway": "10.226.71.1",
  "Flags": "0003",
  "IRTT": "0"
 },
 {
  "Use": "0",
  "Iface": "eth1",
  "Metric": "0",
  "Destination": "172.16.0.0",
  "Mask": "255.240.0.0",
  "RefCnt": "0",
  "MTU": "0",
  "Window": "0",
  "Gateway": "10.226.71.1",
  "Flags": "0003",
  "IRTT": "0"
 },
 {
  "Use": "0",
  "Iface": "eth1",
  "Metric": "0",
  "Destination": "10.0.0.0",
  "Mask": "255.0.0.0",
  "RefCnt": "0",
  "MTU": "0",
  "Window": "0",
  "Gateway": "10.226.71.1",
  "Flags": "0003",
  "IRTT": "0"
 }
]

ROUTE_FILE = '/proc/net/route'

get_interface_by_ip(ip)

get the interface which can reach to the ip :param ip:

destination ip

Returns:interface name which can reach to the ip. None if failed.

get_interfaces()

get all the interface of this host

get_route_by_ip(ip)

get the route_info which can reach to the ip address :param ip:

destination ip address

Returns:route_info in type of dict

get_routes()

get all the route_info of this host :return: all the readable route_info of this host

Module contents

author:Guannan Ma create_date:2014 last_date:2014 descrition:network related module

cup.net.get_local_hostname()

获得当前机器的hostname

cup.net.get_hostip(hostname=None)

拿到某hostname的ip地址.

Parameters:hostname – 机器的hostname, 默认为None代表不传值， 函数将自动获取当前机器的ip

cup.net.getip_byinterface(iface='eth0')

@platform:

Linux/Unix

获得某个网卡的ip地址 E.g.

import cup
print cup.net.getip_byinterface('eth0')
print cup.net.getip_byinterface('eth1')
print cup.net.getip_byinterface('xgbe0')   # 万兆网卡

cup.net.set_sock_keepalive_linux(sock, after_idle_sec=1, interval_sec=3, max_fails=5)

Set TCP keepalive on an open socket. It activates after 1 second (after_idle_sec) of idleness, then sends a keepalive ping once every 3 seconds (interval_sec), and closes the connection after 5 failed ping (max_fails), or 15 seconds

Parameters:

• sock – socket
• after_idle_sec – for TCP_KEEPIDLE
• interval_sec – for TCP_KEEPINTVL
• max_fails – for TCP_KEEPCNT

cup.net.set_sock_reusable(sock, resuable=True)

设置socket的端口是否可被重复使用， 默认resuable==True

cup.net.set_sock_linger(sock)

关闭socket的linger参数。 实际产生的效果如下:

I.g.

sock.setsockopt(
    socket.SOL_SOCKET, socket.SO_LINGER,
    struct.pack('ii', 0, 0)
)

cup.net.set_sock_quickack(sock)

打开socket的quickack功能:

I.g.

sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)
sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_QUICKACK, 1)