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qmp: Remind users that you must first call ExecuteQMPCapabilities()

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Before calling any other command it is necessary to call
ExecuteQMPCapabilities() otherwise QEMU will not process the subsequent QMP
commands.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This commit is contained in:
Rob Bradford 2018-08-22 17:07:21 +01:00
parent 5a5e5b720f
commit 8515ae4817
1 changed files with 4 additions and 0 deletions
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4
qemu/qmp.go
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@ -561,6 +561,10 @@ func (q *QMP) executeCommand(ctx context.Context, name string, args map[string]i
// block until they have received a success or failure message from QMP,
// i.e., {"return": {}} or {"error":{}}, and in some cases certain events
// are received.
//
// QEMU currently requires that the "qmp_capabilties" command is sent before any
// other command. Therefore you must call qmp.ExecuteQMPCapabilities() before
// you execute any other command.
func QMPStart(ctx context.Context, socket string, cfg QMPConfig, disconnectedCh chan struct{}) (*QMP, *QMPVersion, error) {
if cfg.Logger == nil {
cfg.Logger = qmpNullLogger{}