Re: [Qemu-discuss] QEMU guest agent behavior with 'guest-sync-delimited'

[Mike Harris]

Perhaps when it gets the error case, the guest agent hasn't responded to the sync yet? For the success case, it has?

So maybe if I get a result without the \xff char, I should not continue?

On Thu, May 15, 2014 at 12:47 PM, Mike Harris <address@hidden> wrote:

This error seems non-deterministic. Example code:

  sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

  sock.connect(('127.0.0.1', 5501))

  sock.send('\xff{"execute": "guest-sync-delimited", "arguments": {"id": 1}}')

  result = sock.recv(1024)

  result = result.rpartition('\xff')[2]

  print result.splitlines()[-1]

this results in either:

{"return": 1}

or

{"error": {"class": "GenericError", "desc": "Invalid JSON syntax"}}

Any ideas?

On Thu, May 15, 2014 at 11:39 AM, Mike Harris <address@hidden> wrote:

Hi,

I'm trying to use the qemu guest agent, and I'm not sure if I'm doing sync right

I'm sending the 0xff char, then the guest-sync-delimited command. I get back a json syntax error, then the 0xff byte.Is the syntax error expected? Should i just ignore it until I see 0xff?

Example (the guest agent serial device is running on tcp:5501 on the host.

address@hidden:~$ echo -e \\xff'{"execute": "guest-sync-delimited", "arguments": {"id": 1}}' | nc -q5 localhost 5501

{"error": {"class": "GenericError", "desc": "Invalid JSON syntax"}}

�{"return": 1}