如何在 Python 中访问 netstat 数据？
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How do I access netstat data in Python?
提问by Andrey Fedorov
I'm trying to need to access/parse all outgoing connections on a particular port number on a Linux machine using a Python script. The simplest implementation seems to be to open a subprocess for netstat and parse its stdout.
我正在尝试使用 Python 脚本访问/解析 Linux 机器上特定端口号上的所有传出连接。最简单的实现似乎是为 netstat 打开一个子进程并解析其标准输出。
I imagine someone somewhere has had this problem before, and am surprised not to find any netstat parsers online. Is this just not big enough of a problem for people to feel the need to share?
我想以前有人遇到过这个问题，并且很惊讶没有在网上找到任何 netstat 解析器。这难道还不足以让人们感到需要分享的问题吗？
回答by Giampaolo Rodolà
If you want to control the connection opened by a certain processyou can use psutil:
如果要控制某个进程打开的连接，可以使用 psutil：
>>> p = psutil.Process(1694)
>>> p.name()
'firefox'
>>> p.connections()
[connection(fd=115, family=2, type=1, local_address=('10.0.0.1', 48776), remote_address=('93.186.135.91', 80), status='ESTABLISHED'),
connection(fd=117, family=2, type=1, local_address=('10.0.0.1', 43761), remote_address=('72.14.234.100', 80), status='CLOSING'),
connection(fd=119, family=2, type=1, local_address=('10.0.0.1', 60759), remote_address=('72.14.234.104', 80), status='ESTABLISHED'),
connection(fd=123, family=2, type=1, local_address=('10.0.0.1', 51314), remote_address=('72.14.234.83', 443), status='SYN_SENT')]
Internally psutil uses /proc. If you're interested in connections to/from a particular port number at system level you might take a look at how psutil implements it.
psutil 在内部使用 /proc。如果您对系统级别的特定端口号的连接感兴趣，您可以查看 psutil 如何实现它。
Edit: starting from psutil 2.1.0 you can also gather system-wide connectionsusing net_connections():
编辑：从 psutil 2.1.0 开始，您还可以使用net_connections()收集系统范围的连接：
>>> import psutil
>>> psutil.net_connections()
[pconn(fd=115, family=2, type=1, laddr=('10.0.0.1', 48776), raddr=('93.186.135.91', 80), status='ESTABLISHED', pid=1254),
pconn(fd=117, family=2, type=1, laddr=('10.0.0.1', 43761), raddr=('72.14.234.100', 80), status='CLOSING', pid=2987),
pconn(fd=-1, family=2, type=1, laddr=('10.0.0.1', 60759), raddr=('72.14.234.104', 80), status='ESTABLISHED', pid=None),
pconn(fd=-1, family=2, type=1, laddr=('10.0.0.1', 51314), raddr=('72.14.234.83', 443), status='SYN_SENT', pid=None)
...]
