In the case there has not been any change in etcd since the watch has ben set, etcd returns a HTTP response with an empty body, but with headers confirming the wait has been set.
See Waiting for a change.
headers
Headers returned as response to a request of an operation on the key space.
Response returned once the wait is accepted.
In the case there has not been any change in etcd since the watch has ben set, etcd returns a HTTP response with an empty body, but with headers confirming the wait has been set. See Waiting for a change.
Headers returned as response to a request of an operation on the key space.