Re: [Qemu-devel] [with today's upstream git] Invoking QMP via telnet fails to start VNC

[Markus Armbruster]

Kashyap Chamarthy <address@hidden> writes:

> Heya,
>
> After building qemu, I tried to invoke QMP by via telnet:

Exact version, please.  Commit hash if you build from git.

> Build:
> ==========
>  #./configure --target-list=x86_64-softmmu --disable-werror
> --enable-debug ; make -j5
> ==========
>
> Invoke QMP:
> ==========
> address@hidden ./x86_64-softmmu/qemu-system-x86_64 --enable-kvm -smp 2
> -m 2048 /export/images/el6box1.qcow2 -qmp tcp:localhost:4444,server
> --monitor stdio
> QEMU waiting for connection on: tcp:127.0.0.1:4444,server

I get

    QEMU waiting for connection on: tcp::127.0.0.14444,server

Note the misplaced colon.  Screwed up in commit f6bd5d6e back in
December (I checked).  Leads me to believe you're using old code.

> Failed to start VNC server on `localhost:0,to=99': error parsing to= argument

This error comes from inet_parse().  Looks like you compiled so that VNC
is the default display.  I have no idea why it can't parse that;
explicit "-vnc localhost:0,to=99" works for me.  The error is not fatal,
you just don't get a working display.  It should not affect the QMP
socket at all.

> address@hidden
> ==========
>
> The moment I tried to connect via telnet from a different terminal, it
> fails this way:
> ==========
> address@hidden telnet localhost 4444
> Trying 127.0.0.1...
> Connected to localhost.
> Escape character is '^]'.
> Connection closed by foreign host.
> address@hidden
> ==========

Any output from QEMU when this happens?

> Any hints ?  I'm sure this worked for few weeks ago.