问题
On a multi-tier application, I need to simulate various TCP/IP errors to test some reconnection code. Does anyone know of any tools (Windows based) I can use for this purpose? Thanks.
回答1:
Try netwox (formerly lcrzoex.) If it won't do it, it can't be done. It contains >200 tools.
回答2:
Scapy allows you to control every aspect of the packets, and randomly modify ("fuzz") the ones you don't want to control. If you're a command-line kind of guy, it's a great tool.
回答3:
Clumsy is a good tool for TCP error simulation on Windows. It can simulate (copy-pasted from link above):
- Lag, hold the packets for a short period of time to emulate network lagging.
- Drop, randomly discard packets.
- Throttle, block traffic for a given time frame, then send them in a single batch.
- Duplicate, send cloned packets right after to the original one.
- Out of order, re-arrange the order of packets.
- Tamper, nudge bits of packet's content.
回答4:
No tools that I'm aware of, but most of TCP errors can be emulated by a custom LSP filter. This article can get you started writing one
回答5:
On FreeBSD, the best tool, by far, is dummynet, "a tool originally designed for testing networking protocols, and since then used for a variety of applications including bandwidth management. It simulates/enforces queue and bandwidth limitations, delays, packet losses, and multipath effects."
On Linux, you will have to use netem. (It seems there is now a port of dummynet but I never tried it.)
More details (in French) in my article.
来源：https://stackoverflow.com/questions/2121458/how-can-i-simulate-tcp-ip-errors