How to inject faults to a program at running time with failpoint

[yuxiaoba]

Question

The REDAME file teaches me how to use failpoint when staring a program.

However, it does not tell about injecting faults to a program at running time.

For example,

First I start a go program :

./test

After 5 mins, I set the ENV GO_FAILPOINTS="main/testPanic=return(true)"

The fault cannot be injected to the program.

How can I inject faults to a program after running the progarm?

[soorajchirag]

@yuxiaoba: Did you figure this out?

[yuxiaoba]

I find that I can invoke faults by http rather than environment variable.