In RequestMessagesSync subscriber is listening to a feed where all whisper
events are posted. After we received event with a request hash - subscriber will
stop actively consuming messages from a feed, as a subscription channel will
get overflow and whole feed will get blocked.
Some events are posted to a feed before request is sent, so blocked feed results
in blocked sending.
Now we will unsubscribe after relevant event was received, and terminate subscriber
explicitly by timeout.
This commits adds support for postgres database.
Currently two fields are stored: the bloom filter and the topic.
Only the bloom filter is actually used to query, but potentially we will
use also the topic in the future, so easier to separate it now in order
to avoid a migration.
As part of a performance profiling of mailserver we noticed that most of
the resources on a query are spend decoding the whisper envelope.
This PR changes the way we store envelopes encoding the Topic into the
database key, so we can check that and we are able to publish the
envelope rawValue if it matches.
The change is backward compatible as only newly added envelopes will
have the new key, while old ones will have to be unmarshaled.
* Replace request ID when same request is restarted
* Remove unnecessary changes
* Execute all writes atomically only if request was processed succesfully
* Fix linter
* Fix shadowed errors
* Fix spelling
* Do not append same reference to a byte slice
It was going to be used as proxy from discv5 to rendezvous for les nodes.
We are not using it at the moment, and not clear when we will be using it
and if we are going to use it all.
Additionally it has some memory leaks that need to be fixed, so it is better
to remove it for now and restore once/if we will need it again.
* Notify users that envelope was discarded and retry sending it
* Update Gopkg files with released whisper version
* Forgot to remove signal after refactoring
We allow the user not to specify an upper bound, in which case it will
default to Time.Now() + 60 seconds, to accomodate for messages with
higher timestamp.
Limit is also defaulted to 2000 if not set.
We removed as well the 24 hours limitation as now all the requests will
come with a limit.
