访问Asterisk EAGI的FD(3) [英] Accessing FD (3) for Asterisk EAGI

问题描述

我有以下似乎无限期阻塞的Golang代码

I have the following Golang code that seems to be blocking indefinitely

eagi := os.NewFile(uintptr(3), "/dev/stdeagi")
data := bufio.NewReaderSize(eagi, 64*1024)
...
data.WriteTo(conn) // Blocks indefinitely!

它甚至似乎都没有引发错误-我的猜测是，我访问FD的方式不正确.我的目的是访问 Asterisk EAGI 的Process FD 3.我也尝试读取替代路径fmt.Sprintf("/proc/%d/fd/3", os.Getpid())，但这似乎表现出相同的方式.我在做什么错了?

It doesn't even seem to throw an error - my guess is, I'm accessing the FD incorrectly. My purpose is to access the Process' FD 3 for Asterisk EAGI. I have also tried reading the alternative path fmt.Sprintf("/proc/%d/fd/3", os.Getpid()), but this seems to behave the same way. What am I doing wrong?

推荐答案

做到这一点的正确方法是syscall.Read(fd int, buf []byte) (n int, err error)(

The right way to do this is syscall.Read(fd int, buf []byte) (n int, err error) (doc). As regards my issue, from inside the Asterisk console, a call to sip show channelstats showed that I wasn't receiving RTP packets altogether, and that the Read was blocking because there really was nothing to read. My networking setup needed work.

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