问题
I'm wondering how to go about monitoring network traffic on my Mac. Like the way activity monitor does it, showing the bytes / packets in and out.
I know it's a bit vague, but I'm unsure of the best place to start.
EDIT: I'm wanting to do this in code, not use an existing piece of software.
回答1:
I just found the open source project, MenuMeters. It's got exactly what I'm looking for.
回答2:
You may want to look into programming with pcap. That's the library which drives tcpdump.
回答3:
Use tcpdump for quick-n-dirty low-level command-line monitoring, and wireshark for the kitchen sink.
OTOH, if you just want to know the number of bytes/packets (as opposed to their contents), try Net Monitor, which is commercial, unfortunately.
回答4:
There are lot of paid & freeware applications. But if you a command line person like me, Try this:
nettop //displays network usage per application with lot of details
nettop (press h) //displays help menu
nettop (press c) //collapse and display brief info on network usage
来源：https://stackoverflow.com/questions/2662332/monitor-network-traffic-mac