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Re: [Qemu-devel] [QGA] Bug of qga?
From: |
Sam |
Subject: |
Re: [Qemu-devel] [QGA] Bug of qga? |
Date: |
Fri, 25 Aug 2017 11:09:11 +0800 |
Also I found:
when I use `socat` to take a qga socket, then I use `socat` to communicate
it will got error.
But also SOMETIMES, I will not got error and will communicate OK.
If one user take qga socket, another user should got error, is it? But why
sometimes, the communicate is OK?
2017-08-25 10:11 GMT+08:00 Sam <address@hidden>:
> Hi all,
>
> I'm using qga to send `route -n` and `ping` command to guest. But I found
> SOMETIMES, the second `ping` command's result is the same as `route -n`
> command.
>
> So I guess is there some cache mechanism of qga command result? So when I
> send the second command, and receive from qga socket, I receive the result
> of first command.
>
> Or is this bug happened because of I use async mechanism of python code to
> operate qga socket?
>
> This is the python code I use to operate on this qga socket:
>
> try:
>> sock=socket(AF_UNIX, SOCK_STREAM)
>> sock.settimeout(20)
>> sock.connect(vm_qga_sockpath)
>> sock.send(cmd)
>> while True:
>> res = sock.recv(1024)
>> if len(res):
>> break
>> except Exception as e:
>> res = -1
>> finally:
>> sock.settimeout(None)
>> sock.close()
>
>